source: palm/trunk/DOC/app/chapter_4.2.html @ 1753

Last change on this file since 1753 was 555, checked in by raasch, 15 years ago

New:
---

Changed:


Documentation for surface_heatflux in case of prandtl_layer = .F. improved.

bugfix for wrong netcdf/3.6.3 module on lcsgi (mbuild, mrun)

Errors:


Bugfix in if statement (disturb_heatflux)

Bugfix: in 2201 statement: closing " was missing (interpret_config)

Bugfix: default setting of nzb_local for flat topography (init_grid)

Bugfix: wrong dimension used for ts_value_l (user_statistics)

disturb_heatflux, init_grid, interpret_config, user_statistics

  • Property svn:keywords set to Id
File size: 289.2 KB
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[5]1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
[493]2<html><head>
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[493]17  <meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"><title>PALM chapter 4.2</title></head><body>
[354]18
19
[108]20
21
22<h3 style="line-height: 100%;"><a name="Kapitel4.2"></a>4.2 <a href="#Laufparameter">Runtime
[102]23parameters</a>, <a href="#particle_parameters">particle parameters</a>, and <a href="#Paketparameter">package
[5]24parameters</a></h3>
[108]25
26
27
[354]28
29
[48]30<h3 style="margin-bottom: 0cm; line-height: 100%;"><a name="Laufparameter"></a>Runtime parameters:</h3>
[108]31
32
33
[354]34
35
[108]36<br>
37
38
[354]39
40
[108]41<br>
42
43
[354]44
45
[108]46<table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="2">
47
48
[354]49
50
[108]51 <tbody>
52
53
54
[354]55
56
[108]57    <tr>
58
59
60
[354]61
62
[108]63      <td style="vertical-align: top;"><font size="4"><b>Parameter
64name</b></font></td>
65
66
[354]67
68
[108]69 <td style="vertical-align: top;"><font size="4"><b>Type</b></font></td>
70
71
72
[354]73
74
[108]75      <td style="vertical-align: top;"> 
76     
77     
[354]78     
79     
[108]80      <p><b><font size="4">Default</font></b> <br>
81
82
[354]83
84
[108]85 <b><font size="4">value</font></b></p>
86
87
[354]88
89
[108]90 </td>
91
92
93
[354]94
95
[108]96      <td style="vertical-align: top;"><font size="4"><b>Explanation</b></font></td>
97
98
99
[354]100
101
[108]102    </tr>
103
104
[354]105
106
[108]107 <tr>
108
109
[354]110
111
[108]112 <td style="vertical-align: top;"><a name="averaging_interval"></a><span style="font-weight: bold;">averaging_interval</span><br>
113
114
115
[354]116
117
[108]118      </td>
119
120
[354]121
122
[108]123 <td style="vertical-align: top;">R<br>
124
125
[354]126
127
[108]128 </td>
129
130
131
[354]132
133
[108]134      <td style="vertical-align: top;"><span style="font-style: italic;">0.0</span><br>
135
136
[354]137
138
[108]139 </td>
140
141
142
[354]143
144
[108]145      <td style="vertical-align: top;">Averaging interval for
146all&nbsp;output of temporally averaged data (in s).<br>
147
148
[354]149
150
[108]151      <br>
152
153
[354]154
155
[108]156This
[5]157parameter defines the time interval length for temporally averaged data
158(vertical profiles, spectra, 2d cross-sections, 3d volume data). By
[48]159default,&nbsp;data are not subject to temporal averaging. The
160interval
161length is limited by the parameter <a href="#dt_data_output_av">dt_data_output_av</a>.
162In any case, <span style="font-weight: bold;">averaging_interval</span>
163&lt;= <span style="font-weight: bold;">dt_data_output_av</span>
[108]164must hold.<br>
165
166
[354]167
168
[108]169      <br>
170
171
[354]172
173
[108]174If
[5]175an interval is defined, then by default the average is calculated from
176the data values of all timesteps lying within this interval. The number
177of time levels entering into the average can be reduced with the
[108]178parameter <a href="#dt_averaging_input">dt_averaging_input</a>.<br>
179
180
[354]181
182
[108]183      <br>
184
185
[354]186
187
[108]188If
[48]189an averaging interval can not be completed at the end of a run, it
[5]190will be finished at the beginning of the next restart run. Thus for
191restart runs, averaging intervals do not
[108]192necessarily begin at the beginning of the run.<br>
193
194
[354]195
196
[108]197      <br>
198
199
[354]200
201
[108]202Parameters
203      <a href="#averaging_interval_pr">averaging_interval_pr</a>
[48]204and <a href="#averaging_interval_sp">averaging_interval_sp</a>
205can be used to define different averaging intervals for vertical
[108]206profile data and spectra, respectively.<br>
207
208
[354]209
210
[108]211 </td>
212
213
[354]214
215
[108]216 </tr>
217
218
219
[354]220
221
[108]222    <tr>
223
224
[354]225
226
[108]227 <td style="vertical-align: top;"> 
228     
229     
[354]230     
231     
[108]232      <p><a name="averaging_interval_pr"></a><b>averaging_interval_pr</b></p>
233
234
235
[354]236
237
[108]238      </td>
239
240
[354]241
242
[108]243 <td style="vertical-align: top;">R<br>
244
245
[354]246
247
[108]248 </td>
249
250
251
[354]252
253
[108]254      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="#averaging_interval">averaging_<br>
255
256
257
[354]258
259
[5]260interval</a><br>
[108]261
262
263
[354]264
265
[108]266      </span> </td>
267
268
[354]269
270
[108]271 <td style="vertical-align: top;">
272     
273     
[354]274     
275     
[108]276      <p>Averaging
[61]277interval for output of vertical profiles&nbsp;to
[48]278local
279file <font color="#000000"><font color="#000000"><a href="chapter_3.4.html#DATA_1D_PR_NETCDF">DATA_1D_PR_NETCDF</a>
[108]280      </font></font>and/or&nbsp; <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>
281(in s).&nbsp; </p>
282
283
[354]284
285
[108]286 
287     
288     
[354]289     
290     
[108]291      <p>If
[5]292this parameter is given a non-zero value, temporally
293averaged vertical profile data are output. By default, profile data
294data are not subject to temporal averaging. The interval length is
[48]295limited by the parameter <a href="#dt_dopr">dt_dopr</a>.
296In any case <b>averaging_interval_pr</b> &lt;= <b>dt_dopr
[108]297      </b>must
298hold.</p>
299
300
[354]301
302
[108]303If an interval is defined, then by default the average
[48]304is calculated
[5]305from the data values of all timesteps lying within this interval. The
306number of time levels entering into the average can be reduced with the
307parameter <a href="#dt_averaging_input_pr">dt_averaging_input_pr</a>.
[108]308     
309     
[354]310     
311     
[108]312      <p>If
[5]313an averaging interval can not be completed at the end of a run, it will
314be finished at the beginning of the next restart run. Thus for restart
315runs, averaging intervals do not
[108]316necessarily begin at the beginning of the run.</p>
317
318
[354]319
320
[108]321 </td>
322
323
[354]324
325
[108]326 </tr>
327
328
329
[354]330
331
[108]332    <tr>
333
334
[354]335
336
[108]337 <td style="vertical-align: top;"><a name="call_psolver_at_all_substeps"></a><span style="font-weight: bold;">call_psolver_at_all_<br>
338
339
340
[354]341
342
[108]343substeps</span></td>
344
345
[354]346
347
[108]348 <td style="vertical-align: top;">L<br>
349
350
351
[354]352
353
[108]354      </td>
355
356
[354]357
358
[108]359 <td style="vertical-align: top;"><span style="font-style: italic;">.T.</span><br>
360
361
[354]362
363
[108]364 </td>
365
366
367
[354]368
369
[108]370      <td style="vertical-align: top;">Switch
371to steer the call of the pressure solver.<br>
372
373
[354]374
375
[108]376 <br>
377
378
379
[354]380
381
[5]382In order to speed-up performance, the Poisson equation for perturbation
[48]383pressure (see <a href="#psolver">psolver</a>) can
384be called only at the last substep of multistep Runge-Kutta
385timestep schemes (see <a href="chapter_4.1.html#timestep_scheme">timestep_scheme</a>)
386by setting <span style="font-weight: bold;">call_psolver_at_all_substeps</span>
387= <span style="font-style: italic;">.F.</span>.
[5]388In many cases, this sufficiently reduces the divergence of the velocity
389field. Nevertheless, small-scale ripples (2-delta-x) may occur. In this
390case and in case
[48]391of non-cyclic lateral boundary conditions, <span style="font-weight: bold;">call_psolver_at_all_timesteps</span>
392= <span style="font-style: italic;">.T.</span>
393should be used.&nbsp;<span style="font-weight: bold;"></span></td>
[108]394
395
396
[354]397
398
[108]399    </tr>
400
401
[354]402
403
[108]404 <tr>
405
406
[354]407
408
[108]409 <td style="vertical-align: top;">
410     
411     
[354]412     
413     
[108]414      <p><a name="fcl_factor"></a><b>cfl_factor</b></p>
415
416
417
[354]418
419
[108]420      </td>
421
422
[354]423
424
[108]425 <td style="vertical-align: top;">R<br>
426
427
[354]428
429
[108]430 </td>
431
432
433
[354]434
435
[108]436      <td style="vertical-align: top;"> 
437     
438     
[354]439     
440     
[108]441      <p><i>0.1,
4420.8 or 0.9</i> <br>
443
444
[354]445
446
[108]447 <i>(see right)</i></p>
448
449
450
[354]451
452
[108]453      </td>
454
455
[354]456
457
[108]458 <td style="vertical-align: top;"> 
459     
460     
[354]461     
462     
[108]463      <p lang="en-GB">Time step limiting factor.&nbsp; </p>
464
465
466
[354]467
468
[108]469     
470     
[354]471     
472     
[108]473      <p><span lang="en-GB">In the model, the <span lang="en-GB">maximum
[48]474allowed </span>time step according to CFL and
475diffusion-criterion
476dt_max is reduced by </span><a href="chapter_4.1.html#dt"><span lang="en-GB">dt</span></a> <span lang="en-GB">=
477dt_max * <b>cfl_factor</b>
[5]478in order to avoid stability problems which may arise in the vicinity of
[48]479the maximum allowed timestep. The condition <i>0.0</i>
480&lt; <b>cfl_factor</b>
[108]481&lt; <i>1.0 </i>applies.<br>
482
483
[354]484
485
[108]486 </span></p>
487
488
489
[354]490
491
[108]492     
493     
[354]494     
495     
[108]496      <p><span lang="en-GB">The default value of
[48]497cfl_factor depends on
[108]498the </span><a href="chapter_4.1.html#timestep_scheme"><span lang="en-GB">timestep_scheme</span></a><span lang="en-GB"> used:<br>
499
500
[354]501
502
[108]503 </span></p>
504
505
[354]506
507
[108]508 
509     
510     
[354]511     
512     
[108]513      <p><span lang="en-GB">For the third order Runge-Kutta scheme it
514is <b>cfl_factor</b> = </span><span style="font-style: italic;">0.9</span><span lang="en-GB">.<br>
515
516
[354]517
518
[108]519 </span></p>
520
521
[354]522
523
[108]524 
525     
526     
[354]527     
528     
[108]529      <p><span lang="en-GB">In case of the leapfrog scheme a quite
[5]530restrictive value of <span style="font-weight: bold;">cfl_factor</span>
[48]531= <span style="font-style: italic;">0.1 </span></span><span lang="en-GB">is used because for larger values the velocity
532divergence
[5]533significantly effects the accuracy of the model results.</span><a href="chapter_4.1.html#scalar_advec"><span lang="en-GB"></span></a><span lang="en-GB"> Possibly larger values may
534be used with the leapfrog scheme but these are to be determined by
535appropriate test runs.<span style="font-family: times new roman;"><br>
[108]536
537
538
[354]539
540
[108]541      </span></span></p>
542
543
[354]544
545
[108]546 <span lang="en-GB"><span style="font-family: times new roman;"></span><font face="Times New Roman">The default value for the Euler
[48]547scheme is <span style="font-weight: bold;">cfl_factor</span>
548= <span style="font-style: italic;">0.8</span> .</font></span></td>
[108]549
550
551
[354]552
553
[108]554    </tr>
555
556
[354]557
558
[108]559    <tr>
560
561
[354]562
563
[108]564 <td style="vertical-align: top;"> 
565     
566     
[354]567     
568     
[108]569      <p><a name="create_disturbances"></a><b>create_disturbances</b></p>
570
571
572
[354]573
574
[108]575      </td>
576
577
[354]578
579
[108]580 <td style="vertical-align: top;">L<br>
581
582
[354]583
584
[108]585 </td>
586
587
588
[354]589
590
[108]591      <td style="vertical-align: top;"><span style="font-style: italic;">.T.</span><br>
592
593
[354]594
595
[108]596 </td>
597
598
599
[354]600
601
[108]602      <td style="vertical-align: top;"> 
603     
604     
[354]605     
606     
[108]607      <p>Switch to
[48]608impose random perturbations to the horizontal
[108]609velocity field.&nbsp; </p>
610
611
[354]612
613
[108]614 
615     
616     
[354]617     
618     
[108]619      <p>With <b>create_disturbances</b>
[48]620= <i>.T.,</i> random
[5]621perturbations can be imposed to the horizontal velocity field at
622certain times e.g. in order to trigger off the onset of convection,
[108]623etc..<br>
624
625
[354]626
627
[108]628 </p>
629
630
[354]631
632
[108]633 
634     
635     
[354]636     
637     
[108]638      <p>The temporal interval between
[48]639these times can be steered with <a href="#dt_disturb">dt_disturb</a>,
[5]640the vertical range of the perturbations with <a href="#disturbance_level_b">disturbance_level_b</a>
641and <a href="#disturbance_level_t">disturbance_level_t</a>,
642and the perturbation amplitude with <a href="#disturbance_amplitude">disturbance_amplitude</a>.
643In case of non-cyclic lateral boundary conditions (see <a href="chapter_4.1.html#bc_lr">bc_lr</a>
644and <a href="chapter_4.1.html#bc_ns">bc_ns</a>),
645the horizontal range of the perturbations is determined by <a href="chapter_4.1.html#inflow_disturbance_begin">inflow_disturbance_begin</a>
646and <a href="chapter_4.1.html#inflow_disturbance_end">inflow_disturbance_end</a>.
647A perturbation is added to each grid point with its individual value
648determined by multiplying the disturbance amplitude with a uniformly
649distributed random number.
650After this, the arrays of u and v are smoothed by applying a
651Shuman-filter twice and made divergence-free by applying the pressure
[108]652solver.<br>
653
654
[354]655
656
[108]657 </p>
658
659
[354]660
661
[108]662 
663     
664     
[354]665     
666     
[108]667      <p>The random number generator to
[48]668be used can be chosen with <a href="chapter_4.1.html#random_generator">random_generator</a>.<br>
[108]669
670
671
[354]672
673
[108]674      </p>
675
676
[354]677
678
[108]679 
680     
681     
[354]682     
683     
[108]684      <p>As soon as the desired flow features have
[48]685developed
686(e.g.&nbsp; convection has started), further imposing of
687perturbations
[5]688is not necessary and can be omitted (this does not hold for non-cyclic
689lateral boundaries!). This can be steered by assigning
690an upper limit value for the perturbation energy (the perturbation
691energy is defined by the deviation of the velocity from the mean flow)
692using the parameter <a href="#disturbance_energy_limit">disturbance_energy_limit</a>.
693As soon as the perturbation energy has exceeded this energy limit, no
694more random perturbations are assigned<br>
[108]695
696
697
[354]698
699
[5]700.&nbsp; <br>
[108]701
702
703
[354]704
705
[5]706Timesteps where a random perturbation has been imposed are marked in
707the local file <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a>
708by the character "D" appended to the values of the maximum horizontal
[108]709velocities. </p>
710
711
[354]712
713
[108]714 </td>
715
716
[354]717
718
[108]719 </tr>
720
721
[354]722
723
[108]724 <tr>
725
726
[354]727
728
[108]729 <td style="vertical-align: top;"> 
730     
731     
[354]732     
733     
[108]734      <p><a name="cross_normalized_x"></a><b>cross_normalized_x</b></p>
735
736
737
[354]738
739
[108]740      </td>
741
742
[354]743
744
[108]745 <td style="vertical-align: top;">C*10&nbsp;
746      <br>
747
748
[354]749
750
[108]751&nbsp;&nbsp; (100)</td>
752
753
[354]754
755
[108]756 <td style="vertical-align: top;"><i>100 * ' '</i></td>
757
758
759
[354]760
761
[108]762      <td style="vertical-align: top;"> 
763     
764     
[354]765     
766     
[108]767      <p>Type of
[48]768normalization applied to the x-coordinate of vertical
[5]769profiles to be plotted with <span style="font-weight: bold;">profil</span>.</p>
[108]770
771
772
[354]773
774
[108]775     
776     
[354]777     
778     
[108]779      <p>This parameter only applies for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
780= <span style="font-style: italic;">'profil'</span>.</p>
781
782
[354]783
784
[108]785     
786     
[354]787     
788     
[108]789      <p>If
[48]790vertical profiles are plotted with the plot software <span style="font-weight: bold;">profil</span> (data on
791local file <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>,
[5]792parameters on local file <a href="http://www.muk.uni-hannover.de/%7Eraasch/PALM_group/PLOT1D_PAR">PLOT1D_PAR</a>)
793the x-values of the data points can be normalized with respect to
794certain quantities (e.g. the near-surface heat flux) in order to ensure
795a better comparability. This type of normalization then applies to all
796profiles of one coordinate system (panel). The normalization quantities
797are re-calculated for each output time of each individual profile. If
798temporally averaged profiles are output (see <a href="#averaging_interval_pr">averaging_interval_pr</a>),
799then the normalization quantities are also temporally averaged
800accordingly. If the value of a normalization quantity becomes zero,
801then normalization for the total respective coordinate system (panel)
[108]802is switched off automatically (also for the y-axis).<br>
803
804
[354]805
806
[108]807 </p>
808
809
810
[354]811
812
[108]813     
814     
[354]815     
816     
[108]817      <p>By default, the normalization quantities are calculated as the
[5]818horizontal mean of the total model domain and and these values are also
819used for the normalization of profiles from subdomains (see <a href="chapter_4.1.html#statistic_regions">statistic_regions</a>).
820Instead of this, they can be calculated from the data of a certain
821subdomain by using the parameter <a href="#normalizing_region">normalizing_region</a>
822(however, they are used again for all subdomains and even for the total
[108]823domain).&nbsp; </p>
824
825
[354]826
827
[108]828 
829     
830     
[354]831     
832     
[108]833      <p>The user can choose between
[48]834the following normalization
[108]835quantities: <br>
836
837
[354]838
839
[108]840 </p>
841
842
[354]843
844
[108]845 
846     
847     
[354]848     
849     
[108]850      <table style="text-align: left; width: 100%;" cellpadding="2" cellspacing="2">
851
852
[354]853
854
[108]855 <tbody>
856
857
[354]858
859
[108]860 <tr>
861
862
[354]863
864
[108]865 <td style="vertical-align: top;"><i>'wpt0'</i></td>
866
867
868
[354]869
870
[108]871            <td style="vertical-align: top;">Normalization with
[48]872respect
[5]873to the total surface sensible heat
[108]874flux (k=0 ).</td>
875
876
[354]877
878
[108]879 </tr>
880
881
[354]882
883
[108]884 <tr>
885
886
[354]887
888
[108]889 <td style="vertical-align: middle;"><i>'ws2'</i></td>
890
891
892
[354]893
894
[108]895            <td style="vertical-align: top;">Normalization with
[48]896respect
[5]897to w<sub>*</sub> <sup>2</sup>
898(square of the characteristic vertical wind speed of the CBL)</td>
[108]899
900
901
[354]902
903
[108]904          </tr>
905
906
[354]907
908
[108]909 <tr>
910
911
[354]912
913
[108]914 <td style="vertical-align: top;"><i>'tsw2'</i></td>
915
916
917
[354]918
919
[108]920            <td style="vertical-align: top;">Normalization with
[48]921respect
[5]922to the square of the characteristic
[48]923temperature of the CBL theta<sub>*</sub> (this is defined
924as ratio of
[108]925the surface heat flux and w<sub>*</sub>).</td>
926
927
[354]928
929
[108]930 </tr>
931
932
933
[354]934
935
[108]936          <tr>
937
938
[354]939
940
[108]941 <td style="vertical-align: middle;"><i>'ws3'</i></td>
942
943
944
[354]945
946
[108]947            <td style="vertical-align: top;">Normalization with
[48]948respect
[108]949to w<sub>*</sub> <sup>3</sup>.</td>
950
951
[354]952
953
[108]954 </tr>
955
956
957
[354]958
959
[108]960          <tr>
961
962
[354]963
964
[108]965 <td style="vertical-align: middle;"><i>'ws2tsw'</i></td>
966
967
968
[354]969
970
[108]971            <td style="vertical-align: top;">Normalization with
[48]972respect
[5]973to w<sub>*</sub><sup>2</sup>theta<sub>*</sub>
974(for definition of theta<sub>*</sub> see <span style="font-style: italic;">'tsw2'</span>).</td>
[108]975
976
977
[354]978
979
[108]980          </tr>
981
982
[354]983
984
[108]985 <tr>
986
987
[354]988
989
[108]990 <td style="vertical-align: middle;"><i>'wstsw2'</i></td>
991
992
993
[354]994
995
[108]996            <td style="vertical-align: top;">Normalization with
[48]997respect
[5]998to w<sub>*</sub><sup>2 </sup>theta<sub>*</sub>
999(for definition of theta<sub>*</sub> see <span style="font-style: italic;">'tsw2'</span>).</td>
[108]1000
1001
1002
[354]1003
1004
[108]1005          </tr>
1006
1007
[354]1008
1009
[108]1010 
1011       
1012       
[354]1013       
1014       
[108]1015        </tbody> 
1016     
1017     
[354]1018     
1019     
[108]1020      </table>
1021
1022
[354]1023
1024
[108]1025 
1026     
1027     
[354]1028     
1029     
[108]1030      <p>For each
[48]1031coordinate system (panel) to be drawn (see <a href="#cross_profiles">cross_profiles</a>)
1032an individual normalization quantity can be assigned. For example: if <span style="font-weight: bold;">cross_normalized_x</span> =
[108]1033      <span style="font-style: italic;">'ws2'</span><i>,'ws3'</i>,
[48]1034then the
[5]1035x-values in the 1st coordinate system are normalized with respect to w<sub>*</sub><sup>2</sup>
[48]1036and in the 2nd system with respect to w<sub>*</sub><sup>3</sup>.
1037Data
[5]1038of the further coordinate systems (if any are to be drawn) are not
[108]1039normalized.&nbsp; </p>
1040
1041
[354]1042
1043
[108]1044 
1045     
1046     
[354]1047     
1048     
[108]1049      <p>Using a normalization
[48]1050leaves all vertical profile data on
[5]1051local file <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>
[48]1052unaffected, it only affects the visualization. Within <span style="font-weight: bold;">profil</span>, the
1053normalization is steered
[5]1054by parameter <a href="http://www.muk.uni-hannover.de/institut/software/profil_beschreibung.html#NORMX">normx</a>
1055which may be changed subsequently by the user in the parameter file
1056(local file <a href="chapter_3.4.html#PLOT1D_PAR">PLOT1D_PAR</a>).<br>
[108]1057
1058
1059
[354]1060
1061
[5]1062&nbsp;<br>
[108]1063
1064
1065
[354]1066
1067
[5]1068The assigned normalization quantity is noted in the axes labels of the
1069respective coordinate systems (see <a href="#cross_xtext">cross_xtext</a>).</p>
[108]1070
1071
1072
[354]1073
1074
[108]1075      </td>
1076
1077
[354]1078
1079
[108]1080 </tr>
1081
1082
[354]1083
1084
[108]1085 <tr>
1086
1087
[354]1088
1089
[108]1090 <td style="vertical-align: top;"> 
1091     
1092     
[354]1093     
1094     
[108]1095      <p><a name="cross_normalized_y"></a><b>cross_normalized_y</b></p>
1096
1097
1098
[354]1099
1100
[108]1101      </td>
1102
1103
[354]1104
1105
[108]1106 <td style="vertical-align: top;">C*10&nbsp;
1107      <br>
1108
1109
[354]1110
1111
[108]1112&nbsp;&nbsp; (100)</td>
1113
1114
[354]1115
1116
[108]1117 <td style="vertical-align: top;"><i>100 * ' '</i></td>
1118
1119
1120
[354]1121
1122
[108]1123      <td style="vertical-align: top;"> 
1124     
1125     
[354]1126     
1127     
[108]1128      <p>Type of
[48]1129normalization applied to the y-coordinate of vertical
[5]1130profiles to be plotted with <span style="font-weight: bold;">profil</span>.&nbsp;</p>
[108]1131
1132
1133
[354]1134
1135
[108]1136     
1137     
[354]1138     
1139     
[108]1140      <p>This parameter only applies for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
1141= <span style="font-style: italic;">'profil'</span>.</p>
1142
1143
[354]1144
1145
[108]1146     
1147     
[354]1148     
1149     
[108]1150      <p>If
[48]1151vertical profiles are plotted with the plot software <span style="font-weight: bold;">profil</span> (data on
1152local file <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>,
[5]1153parameter on local file <a href="http://www.muk.uni-hannover.de/%7Eraasch/PALM_group/PLOT1D_PAR">PLOT1D_PAR</a>)
1154the y-values of the data points can be normalized with respect to
1155certain quantities (at present only the normalization with respect to
1156the boundary layer height is possible) in order to ensure a better
[108]1157comparability. </p>
1158
1159
[354]1160
1161
[108]1162 
1163     
1164     
[354]1165     
1166     
[108]1167      <p>The user can choose between the
[48]1168following normalization
[108]1169quantities: <br>
1170
1171
[354]1172
1173
[108]1174 </p>
1175
1176
[354]1177
1178
[108]1179 
1180     
1181     
[354]1182     
1183     
[108]1184      <table style="text-align: left; width: 100%;" cellpadding="2" cellspacing="2">
1185
1186
[354]1187
1188
[108]1189 <tbody>
1190
1191
[354]1192
1193
[108]1194 <tr>
1195
1196
[354]1197
1198
[108]1199 <td style="vertical-align: top;"><i>'z_i'</i></td>
1200
1201
1202
[354]1203
1204
[108]1205            <td style="vertical-align: top;">Normalization with
[48]1206respect
[5]1207to the boundary layer height
1208(determined from the height where the heat flux achieves its minimum
[108]1209value).</td>
1210
1211
[354]1212
1213
[108]1214 </tr>
1215
1216
[354]1217
1218
[108]1219 
1220       
1221       
[354]1222       
1223       
[108]1224        </tbody> 
1225     
1226     
[354]1227     
1228     
[108]1229      </table>
1230
1231
[354]1232
1233
[108]1234 
1235     
1236     
[354]1237     
1238     
[108]1239      <p>For
[48]1240further explanations see <a href="#cross_normalized_x">cross_normalized_x.</a></p>
[108]1241
1242
1243
[354]1244
1245
[108]1246      </td>
1247
1248
[354]1249
1250
[108]1251 </tr>
1252
1253
[354]1254
1255
[108]1256 <tr>
1257
1258
[354]1259
1260
[108]1261 <td style="vertical-align: top;"> 
1262     
1263     
[354]1264     
1265     
[108]1266      <p><a name="cross_profiles"></a><b>cross_profiles</b></p>
1267
1268
1269
[354]1270
1271
[108]1272      </td>
1273
1274
[354]1275
1276
[108]1277 <td style="vertical-align: top;">C*100&nbsp;
1278      <br>
1279
1280
[354]1281
1282
[108]1283&nbsp;&nbsp; (100)</td>
1284
1285
[354]1286
1287
[108]1288 <td style="vertical-align: top;">see right<br>
1289
1290
[354]1291
1292
[108]1293 </td>
1294
1295
1296
[354]1297
1298
[108]1299      <td style="vertical-align: top;"> 
1300     
1301     
[354]1302     
1303     
[108]1304      <p>Determines
[48]1305which vertical profiles are to be presented in
1306which coordinate system if the plot software <span style="font-weight: bold;">profil</span> is used.
[108]1307&nbsp; </p>
1308
1309
[354]1310
1311
[108]1312 
1313     
1314     
[354]1315     
1316     
[108]1317      <p>This parameter only applies for
[48]1318&nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
[108]1319= <span style="font-style: italic;">'profil'</span>.</p>
1320
1321
[354]1322
1323
[108]1324     
1325     
[354]1326     
1327     
[108]1328      <p>The
1329default assignment is:&nbsp; </p>
1330
1331
[354]1332
1333
[108]1334 
1335     
1336     
[354]1337     
1338     
[108]1339      <p><b>cross_profiles</b>
1340=&nbsp; </p>
1341
1342
[354]1343
1344
[108]1345 
1346     
1347     
[354]1348     
1349     
[108]1350      <ul>
1351
1352
[354]1353
1354
[108]1355 
1356       
1357       
[354]1358       
1359       
[108]1360        <p><span style="font-family: monospace; font-style: italic;">'
1361u v ',</span><br>
1362
1363
[354]1364
1365
[108]1366 <span style="font-family: monospace; font-style: italic;">' pt
1367',&nbsp; </span><br style="font-family: monospace; font-style: italic;">
1368
1369
[354]1370
1371
[108]1372 <span style="font-family: monospace; font-style: italic;">'
1373w"pt" w*pt* w*pt*BC wpt wptBC ',&nbsp; </span><br style="font-family: monospace; font-style: italic;">
1374
1375
[354]1376
1377
[108]1378 <span style="font-family: monospace; font-style: italic;">'
1379w"u" w*u* wu w"v"w*v* wv ',&nbsp; </span><br style="font-family: monospace; font-style: italic;">
1380
1381
[354]1382
1383
[108]1384 <span style="font-family: monospace; font-style: italic;">' km
1385kh ',</span><br style="font-family: monospace; font-style: italic;">
1386
1387
[354]1388
1389
[108]1390 <span style="font-family: monospace; font-style: italic;">' l '
[5]1391,</span><br>
[108]1392
1393
1394
[354]1395
1396
[48]139714 * <span style="font-family: monospace; font-style: italic;">'
[108]1398'</span></p>
1399
1400
[354]1401
1402
[108]1403 
1404     
1405     
[354]1406     
1407     
[108]1408      </ul>
1409
1410
[354]1411
1412
[108]1413 
1414     
1415     
[354]1416     
1417     
[108]1418      <p>If plot output of
[48]1419vertical profiles is produced (see <a href="#data_output_pr">data_output_pr</a>),
[5]1420the appropriate data are written to the local file <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>.
1421Simultaneously, the model produces a parameter file (local name <a href="chapter_3.4.html#PLOT1D_PAR">PLOT1D_PAR</a>)
1422which describes the layout for a plot to be generated with the plot
[48]1423program <span style="font-weight: bold;">profil</span>.
1424The parameter <b>cross_profiles</b>
[5]1425determines how many coordinate systems (panels) the plot contains and
1426which profiles are supposed to be drawn into which panel. <b>cross_profiles</b>
1427expects a character string (up to 100 characters long) for each
1428coordinate system, which consists of the names of the profiles to be
1429drawn into this system (all available profiles and their respective
1430names are described at parameter <a href="#data_output_pr">data_output_pr</a>).
1431The single names have to be separated by one blank (' ') and a blank
[48]1432must be spent also at the beginning and at the end of the
[108]1433string.&nbsp; </p>
1434
1435
[354]1436
1437
[108]1438 
1439     
1440     
[354]1441     
1442     
[108]1443      <p>Example:&nbsp; </p>
1444
1445
[354]1446
1447
[108]1448 
1449     
1450     
[354]1451     
1452     
[108]1453      <ul>
1454
1455
1456
[354]1457
1458
[108]1459       
1460       
[354]1461       
1462       
[108]1463        <p><b>cross_profiles</b> = <span style="font-family: monospace; font-style: italic;">' u v ',
1464' pt '</span></p>
1465
1466
[354]1467
1468
[108]1469 
1470     
1471     
[354]1472     
1473     
[108]1474      </ul>
1475
1476
[354]1477
1478
[108]1479 
1480     
1481     
[354]1482     
1483     
[108]1484      <p>In this case the
[48]1485plot consists of two coordinate systems
[5]1486(panels) with the first panel containing the profiles of the horizontal
[48]1487velocity components (<span style="font-style: italic;">'u'</span>
1488and <span style="font-style: italic;">'v'</span>)
1489of all output times (see <a href="#dt_dopr">dt_dopr</a>)
[5]1490and the second one containing the profiles of the potential temperature
1491(<span style="font-style: italic;">'pt'</span>).<br>
[108]1492
1493
1494
[354]1495
1496
[108]1497      </p>
1498
1499
[354]1500
1501
[108]1502 
1503     
1504     
[354]1505     
1506     
[108]1507      <p>Whether the coordinate systems are actually drawn,
[48]1508depends on
[5]1509whether data of the appropriate profiles were output during the run
1510(profiles to be output have to be selected with the parameter <a href="#data_output_pr">data_output_pr</a>).
[48]1511For example if <b>data_output_pr</b> = <span style="font-style: italic;">'u'</span>, <span style="font-style: italic;">'v'</span> was assigned,
1512then
[5]1513the plot only consists of one panel, since no profiles of the potential
1514temperature were output. On the other hand, if profiles were assigned
1515to <b>data_output_pr </b>whose names do not appear in <b>cross_profiles</b>,
1516then the respective profile data are output (<a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>)
[108]1517but they are not drawn in the plot. <br>
1518
1519
[354]1520
1521
[108]1522 </p>
1523
1524
1525
[354]1526
1527
[5]1528The arrangement of the panels in the plot can be controlled
1529with the parameters <a href="#profile_columns">profile_columns</a>
1530and <a href="#profile_rows">profile_rows</a>.
1531Up to 100 panels systems are allowed in a plot (however, they may be
[108]1532distributed on several pages).</td>
1533
1534
[354]1535
1536
[108]1537 </tr>
1538
1539
[354]1540
1541
[108]1542 <tr>
1543
1544
[354]1545
1546
[108]1547 <td style="vertical-align: top;"> 
1548     
1549     
[354]1550     
1551     
[108]1552      <p><a name="cross_xtext"></a><b>cross_xtext</b></p>
1553
1554
1555
[354]1556
1557
[108]1558      </td>
1559
1560
[354]1561
1562
[108]1563 <td style="vertical-align: top;">C*40&nbsp;
1564      <br>
1565
1566
[354]1567
1568
[108]1569&nbsp;&nbsp; (100)</td>
1570
1571
[354]1572
1573
[108]1574 <td style="vertical-align: top;">see right<br>
1575
1576
[354]1577
1578
[108]1579 </td>
1580
1581
1582
[354]1583
1584
[108]1585      <td style="vertical-align: top;"> 
1586     
1587     
[354]1588     
1589     
[108]1590      <p>x-axis labels
[48]1591of vertical profile coordinate systems to be
1592plotted with <span style="font-weight: bold;">profil</span>.&nbsp;
[108]1593      </p>
1594
1595
[354]1596
1597
[108]1598 
1599     
1600     
[354]1601     
1602     
[108]1603      <p>This parameter only applies for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
1604= <span style="font-style: italic;">'profil'</span>.</p>
1605
1606
[354]1607
1608
[108]1609     
1610     
[354]1611     
1612     
[108]1613      <p>The
1614default assignment is:&nbsp; </p>
1615
1616
[354]1617
1618
[108]1619 
1620     
1621     
[354]1622     
1623     
[108]1624      <p><b>cross_xtext</b>
1625=&nbsp; </p>
1626
1627
[354]1628
1629
[108]1630 
1631     
1632     
[354]1633     
1634     
[108]1635      <ul>
1636
1637
[354]1638
1639
[108]1640 
1641       
1642       
[354]1643       
1644       
[108]1645        <p><span style="font-style: italic;">'wind speed in
1646ms&gt;-&gt;1',&nbsp; </span><br style="font-style: italic;">
1647
1648
[354]1649
1650
[108]1651 <span style="font-style: italic;">'pot. temperature in
[5]1652K',&nbsp; </span><br style="font-style: italic;">
[108]1653
1654
1655
[354]1656
1657
[108]1658        <span style="font-style: italic;">'heat flux in K
1659ms&gt;-&gt;1',&nbsp; </span><br style="font-style: italic;">
1660
1661
[354]1662
1663
[108]1664 <span style="font-style: italic;">'momentum flux in
1665m&gt;2s&gt;2',&nbsp; </span><br style="font-style: italic;">
1666
1667
[354]1668
1669
[108]1670 <span style="font-style: italic;">'eddy diffusivity in
1671m&gt;2s&gt;-&gt;1',&nbsp; </span><br style="font-style: italic;">
1672
1673
[354]1674
1675
[108]1676 <span style="font-style: italic;">'mixing length in m',</span>&nbsp;
1677        <br>
1678
1679
[354]1680
1681
[108]168214 * <span style="font-style: italic;">' '</span></p>
1683
1684
1685
[354]1686
1687
[108]1688     
1689     
[354]1690     
1691     
[108]1692      </ul>
1693
1694
[354]1695
1696
[108]1697 
1698     
1699     
[354]1700     
1701     
[108]1702      <p>This parameter can be used to assign x-axis
[48]1703labels to vertical
1704profiles to be plotted with the plot software <span style="font-weight: bold;">profil </span>(for output
1705of vertical
[5]1706profile data see <a href="#data_output_pr">data_output_pr</a>).<br>
[108]1707
1708
1709
[354]1710
1711
[5]1712The labels are assigned to those coordinate systems (panels) defined by
[108]1713      <a href="#cross_profiles">cross_profiles</a>
[5]1714according to their respective order (compare the default values of <b>cross_xtext</b>
[108]1715and <b>cross_profiles</b>). </p>
1716
1717
[354]1718
1719
[108]1720 
1721     
1722     
[354]1723     
1724     
[108]1725      <p>Umlauts
[493]1726are possible (write &#8220; in front of, similar to TeX), as
[48]1727well as super- and subscripts (use "&gt;" or "&lt;" in front of
1728each
[5]1729character), special characters etc. (see UNIRAS manuals) when using the
1730plot software <a href="http://www.muk.uni-hannover.de/institut/software/profil_beschreibung.html#chapter3.2.6">profil</a>.</p>
[108]1731
1732
1733
[354]1734
1735
[108]1736      </td>
1737
1738
[354]1739
1740
[108]1741 </tr>
1742
1743
[354]1744
1745
[108]1746 <tr>
1747
1748
[354]1749
1750
[108]1751 <td style="vertical-align: top;"> 
1752     
1753     
[354]1754     
1755     
[108]1756      <p><a name="cycle_mg"></a><b>cycle_mg</b></p>
1757
1758
1759
[354]1760
1761
[108]1762      </td>
1763
1764
[354]1765
1766
[108]1767 <td style="vertical-align: top;">C*1</td>
1768
1769
1770
[354]1771
1772
[108]1773      <td style="vertical-align: top;"><i>'w'</i></td>
1774
1775
1776
[354]1777
1778
[108]1779      <td style="vertical-align: top;"> 
1780     
1781     
[354]1782     
1783     
[108]1784      <p>Type of cycle
1785to be used with the multi-grid method.&nbsp; </p>
1786
1787
[354]1788
1789
[108]1790 
1791     
1792     
[354]1793     
1794     
[108]1795      <p>This
[48]1796parameter determines which type of cycle is applied in
[5]1797the multi-grid method used for solving the Poisson equation for
1798perturbation pressure (see <a href="#psolver">psolver</a>).
1799It defines in which way it is switched between the fine and coarse
1800grids. So-called v- and w-cycles are realized (i.e. <b>cycle_mg</b>
[48]1801may be assigned the values <i>'v'</i> or <i>'w'</i>).
1802The
[5]1803computational cost of w-cycles is much higher than that of v-cycles,
[108]1804however, w-cycles give a much better convergence. </p>
1805
1806
[354]1807
1808
[108]1809 </td>
1810
1811
1812
[354]1813
1814
[108]1815    </tr>
1816
1817
[354]1818
1819
[108]1820 <tr>
1821
1822
[354]1823
1824
[108]1825 <td style="vertical-align: top;">
1826     
1827     
[354]1828     
1829     
[108]1830      <p><a name="data_output"></a><b>data_output</b></p>
1831
1832
1833
[354]1834
1835
[108]1836      </td>
1837
1838
[354]1839
1840
[108]1841 <td style="vertical-align: top;">C * 10 (100)<br>
1842
1843
1844
[354]1845
1846
[108]1847      </td>
1848
1849
[354]1850
1851
[108]1852 <td style="vertical-align: top;"><span style="font-style: italic;">100 * ' '</span><br>
1853
1854
1855
[354]1856
1857
[108]1858      </td>
1859
1860
[354]1861
1862
[108]1863 <td style="vertical-align: top;">Quantities
1864for which 2d cross section and/or 3d volume data are to be output.<br>
1865
1866
[354]1867
1868
[108]1869      <br>
1870
1871
[354]1872
1873
[108]1874PALM
[5]1875allows the output of instantaneous data as well as of temporally
1876averaged data which is steered by the strings assigned to this
[108]1877parameter (see below).<br>
1878
1879
[354]1880
1881
[108]1882      <br>
1883
1884
[354]1885
1886
[108]1887By default, cross section
[48]1888data are output (depending on the selected cross sections(s), see
1889below)&nbsp; to local files <a href="chapter_3.4.html#DATA_2D_XY_NETCDF">DATA_2D_XY_NETCDF</a>,
[108]1890      <a href="chapter_3.4.html#DATA_2D_XZ_NETCDF">DATA_2D_XZ_NETCDF</a>
[48]1891and/or <a href="chapter_3.4.html#DATA_2D_YZ_NETCDF">DATA_2D_YZ_NETCDF</a>.
1892Volume data are output to file <a href="chapter_3.4.html#DATA_3D_NETCDF">DATA_3D_NETCDF</a>.
1893If the user has switched on the output of temporally averaged data,
1894these are written seperately to local files <a href="chapter_3.4.html#DATA_2D_XY_AV_NETCDF">DATA_2D_XY_AV_NETCDF</a>,
[108]1895      <a href="chapter_3.4.html#DATA_2D_XZ_AV_NETCDF">DATA_2D_XZ_AV_NETCDF</a>,
1896      <a href="chapter_4.3.html#DATA_2D_YZ_AV_NETCDF">DATA_2D_YZ_AV_NETCDF</a>,
[48]1897and <a href="chapter_3.4.html#DATA_3D_AV_NETCDF">DATA_3D_AV_NETCDF</a>,
[108]1898respectively.<br>
1899
1900
[354]1901
1902
[108]1903      <br>
1904
1905
[354]1906
1907
[108]1908The
[5]1909filenames already suggest that all files have NetCDF format.
1910Informations about the file content (kind of quantities, array
1911dimensions and grid coordinates) are part of the self describing NetCDF
1912format and can be extracted from the NetCDF files using the command
[48]1913"ncdump -c &lt;filename&gt;". See chapter <a href="chapter_4.5.1.html">4.5.1</a> about processing
[108]1914the PALM NetCDF data.<br>
1915
1916
[354]1917
1918
[108]1919      <br>
1920
1921
[354]1922
1923
[108]1924The following quantities are
1925available for output by default (quantity names ending with '*' are only allowed for the output of horizontal cross sections):<br>
1926
1927
[354]1928
1929
[108]1930      <br>
1931
1932
[354]1933
1934
[108]1935     
1936     
[354]1937     
1938     
[108]1939      <table style="text-align: left; width: 576px; height: 481px;" border="1" cellpadding="2" cellspacing="2">
1940
1941
[354]1942
1943
[108]1944        <tbody>
1945
1946
[354]1947
1948
[108]1949          <tr>
1950
1951
[354]1952
1953
[108]1954            <td style="width: 106px;"><span style="font-weight: bold;">quantity
1955name</span></td>
1956
1957
[354]1958
1959
[108]1960            <td style="width: 196px;"><span style="font-weight: bold;">meaning</span></td>
1961
1962
[354]1963
1964
[108]1965            <td><span style="font-weight: bold;">unit</span></td>
1966
1967
[354]1968
1969
[108]1970            <td><span style="font-weight: bold;">remarks</span></td>
1971
1972
[354]1973
1974
[108]1975          </tr>
1976
1977
[354]1978
1979
[108]1980          <tr>
1981
1982
[354]1983
1984
[108]1985            <td style="width: 106px;"><span style="font-style: italic;">e</span></td>
1986
1987
[354]1988
1989
[108]1990            <td style="width: 196px;">SGS TKE</td>
1991
1992
[354]1993
1994
[108]1995            <td>m<sup>2</sup>/s<sup>2</sup></td>
1996
1997
[354]1998
1999
[493]2000            <td><br>
2001</td>
[108]2002
2003
[354]2004
2005
[108]2006          </tr>
2007
2008
[354]2009
2010
[108]2011          <tr>
2012
2013
[354]2014
2015
[108]2016            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">lwp*</span></td>
2017
2018
[354]2019
2020
[108]2021            <td style="width: 196px; vertical-align: top;">liquid water path</td>
2022
2023
[354]2024
2025
[108]2026            <td style="vertical-align: top;">m</td>
2027
2028
[354]2029
2030
[108]2031            <td style="vertical-align: top;">only horizontal cross section
[48]2032is allowed,&nbsp;requires <a href="chapter_4.1.html#cloud_physics">cloud_physics</a>
[108]2033= <span style="font-style: italic;">.TRUE.</span></td>
2034
2035
[354]2036
2037
[108]2038          </tr>
2039
2040
[354]2041
2042
[108]2043          <tr>
2044
2045
[354]2046
2047
[108]2048            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">p</span></td>
2049
2050
[354]2051
2052
[108]2053            <td style="width: 196px; vertical-align: top;">perturpation
2054pressure</td>
2055
2056
[354]2057
2058
[108]2059            <td style="vertical-align: top;">N/m<sup>2</sup>,
2060Pa</td>
2061
2062
[354]2063
2064
[493]2065            <td style="vertical-align: top;"><br>
2066</td>
[108]2067
2068
[354]2069
2070
[108]2071          </tr>
2072
2073
[354]2074
2075
[108]2076          <tr>
2077
2078
[354]2079
2080
[108]2081            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">pc</span></td>
2082
2083
[354]2084
2085
[108]2086            <td style="width: 196px; vertical-align: top;">particle/droplet
2087concentration</td>
2088
2089
[354]2090
2091
[108]2092            <td style="vertical-align: top;">#/gridbox</td>
2093
2094
[354]2095
2096
[108]2097            <td style="vertical-align: top;">requires that particle
[48]2098advection is switched on by <span style="font-weight: bold;">mrun</span>-option
[108]2099"-p particles"</td>
2100
2101
[354]2102
2103
[108]2104          </tr>
2105
2106
[354]2107
2108
[108]2109          <tr>
2110
2111
[354]2112
2113
[108]2114            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">pr</span></td>
2115
2116
[354]2117
2118
[108]2119            <td style="width: 196px; vertical-align: top;">mean
2120particle/droplet radius </td>
2121
2122
[354]2123
2124
[108]2125            <td style="vertical-align: top;">m</td>
2126
2127
[354]2128
2129
[108]2130            <td style="vertical-align: top;">requires that particle
[48]2131advection is switched on by <span style="font-weight: bold;">mrun</span>-option
[108]2132"-p particles"</td>
2133
2134
[354]2135
2136
[108]2137          </tr>
2138
2139
[354]2140
2141
[108]2142          <tr>
2143
2144
[354]2145
2146
[108]2147            <td style="vertical-align: top;"><span style="font-style: italic;">pra*</span></td>
2148
2149
[354]2150
2151
[108]2152            <td style="vertical-align: top;">precipitation amount</td>
2153
2154
[354]2155
2156
[108]2157            <td style="vertical-align: top;">mm</td>
2158
2159
[354]2160
2161
[108]2162            <td style="vertical-align: top;">only horizontal cross section
[72]2163is allowed,&nbsp;requires&nbsp;<a href="chapter_4.1.html#precipitation">precipitation</a>
[108]2164= <span style="font-style: italic;">.TRUE., </span>time interval on which amount refers to is defined by <a href="#precipitation_amount_interval">precipitation_amount_interval</a></td>
2165
2166
[354]2167
2168
[108]2169          </tr>
2170
2171
[354]2172
2173
[108]2174          <tr>
2175
2176
[354]2177
2178
[108]2179            <td style="vertical-align: top;"><span style="font-style: italic;">prr*</span></td>
2180
2181
[354]2182
2183
[108]2184            <td style="vertical-align: top;">precipitation rate</td>
2185
2186
[354]2187
2188
[108]2189            <td style="vertical-align: top;">mm/s</td>
2190
2191
[354]2192
2193
[108]2194            <td style="vertical-align: top;">only horizontal cross section
[72]2195is allowed,&nbsp;requires&nbsp;<a href="chapter_4.1.html#precipitation">precipitation</a>
[108]2196= <span style="font-style: italic;">.TRUE.</span></td>
2197
2198
[354]2199
2200
[108]2201          </tr>
2202
2203
[354]2204
2205
[108]2206          <tr>
2207
2208
[354]2209
2210
[108]2211            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">pt</span></td>
2212
2213
[354]2214
2215
[108]2216            <td style="width: 196px; vertical-align: top;">potential
2217temperature<br>
2218
2219
[354]2220
2221
[108]2222            </td>
2223
2224
[354]2225
2226
[108]2227            <td style="vertical-align: top;">K</td>
2228
2229
[354]2230
2231
[493]2232            <td style="vertical-align: top;"><br>
2233</td>
[108]2234
2235
[354]2236
2237
[108]2238          </tr>
2239
2240
[354]2241
2242
[108]2243          <tr>
2244
2245
[354]2246
2247
[108]2248            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">q</span></td>
2249
2250
[354]2251
2252
[108]2253            <td style="width: 196px; vertical-align: top;">specific humidity
2254(or total water content, if cloud physics is switched on)</td>
2255
2256
[354]2257
2258
[108]2259            <td style="vertical-align: top;">kg/kg</td>
2260
2261
[354]2262
2263
[108]2264            <td style="vertical-align: top;">requires&nbsp;<a href="chapter_4.1.html#humidity">humidity</a> = <span style="font-style: italic;">.TRUE.</span></td>
2265
2266
[354]2267
2268
[108]2269          </tr>
2270
2271
[354]2272
2273
[108]2274          <tr>
2275
2276
[354]2277
2278
[108]2279            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">ql</span></td>
2280
2281
[354]2282
2283
[108]2284            <td style="width: 196px; vertical-align: top;">liquid water
2285content</td>
2286
2287
[354]2288
2289
[108]2290            <td style="vertical-align: top;">kg/kg</td>
2291
2292
[354]2293
2294
[108]2295            <td style="vertical-align: top;">requires <a href="chapter_4.1.html#cloud_physics">cloud_physics</a>
[48]2296= <span style="font-style: italic;">.TRUE.</span>
2297or <a href="chapter_4.1.html#cloud_droplets">cloud_droplets</a>
[108]2298= <span style="font-style: italic;">.TRUE.</span></td>
2299
2300
[354]2301
2302
[108]2303          </tr>
2304
2305
[354]2306
2307
[108]2308          <tr>
2309
2310
[354]2311
2312
[108]2313            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">ql_c</span></td>
2314
2315
[354]2316
2317
[108]2318            <td style="width: 196px; vertical-align: top;">change in liquid
2319water content due to condensation/evaporation during last timestep</td>
2320
2321
[354]2322
2323
[108]2324            <td style="vertical-align: top;">kg/kg</td>
2325
2326
[354]2327
2328
[108]2329            <td style="vertical-align: top;">requires <a href="chapter_4.1.html#cloud_droplets">cloud_droplets</a>
2330= <span style="font-style: italic;">.TRUE.</span></td>
2331
2332
[354]2333
2334
[108]2335          </tr>
2336
2337
[354]2338
2339
[108]2340          <tr>
2341
2342
[354]2343
2344
[108]2345            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">ql_v</span></td>
2346
2347
[354]2348
2349
[108]2350            <td style="width: 196px; vertical-align: top;">volume of liquid
2351water</td>
2352
2353
[354]2354
2355
[108]2356            <td style="vertical-align: top;">m<sup>3</sup>/gridbox</td>
2357
2358
[354]2359
2360
[108]2361            <td style="vertical-align: top;">requires <a href="chapter_4.1.html#cloud_droplets">cloud_droplets</a>
2362= <span style="font-style: italic;">.TRUE.</span></td>
2363
2364
[354]2365
2366
[108]2367          </tr>
2368
2369
[354]2370
2371
[108]2372          <tr>
2373
2374
[354]2375
2376
[108]2377            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">ql_vp</span></td>
2378
2379
[354]2380
2381
[108]2382            <td style="width: 196px; vertical-align: top;">weighting factor</td>
2383
2384
[354]2385
2386
[493]2387            <td style="vertical-align: top;"><br>
2388</td>
[108]2389
2390
[354]2391
2392
[108]2393            <td style="vertical-align: top;">requires <a href="chapter_4.1.html#cloud_droplets">cloud_droplets</a>
2394= <span style="font-style: italic;">.TRUE.</span></td>
2395
2396
[354]2397
2398
[108]2399          </tr>
2400
2401
[354]2402
2403
[108]2404          <tr>
2405
[354]2406            <td>qsws*</td>
[108]2407
[354]2408            <td>latent&nbsp;surface heatflux</td>
2409
2410            <td>kg/kg * m/s</td>
2411
2412            <td>only horizontal cross section is allowed, requires humidity = .TRUE. </td>
2413
2414          </tr>
2415
2416          <tr>
2417
2418
2419
2420
[108]2421            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">qv</span></td>
2422
2423
[354]2424
2425
[108]2426            <td style="width: 196px; vertical-align: top;">water vapor
2427content (specific humidity)</td>
2428
2429
[354]2430
2431
[108]2432            <td style="vertical-align: top;">kg/kg</td>
2433
2434
[354]2435
2436
[108]2437            <td style="vertical-align: top;">requires <a href="chapter_4.1.html#cloud_physics">cloud_physics</a>
2438= <span style="font-style: italic;">.TRUE.</span></td>
2439
2440
[354]2441
2442
[108]2443          </tr>
2444
2445
[354]2446
2447
[108]2448          <tr>
2449
2450
[354]2451
2452
[108]2453            <td align="undefined" valign="undefined"><span style="font-style: italic;">rho</span></td>
2454
2455
[354]2456
2457
[108]2458            <td align="undefined" valign="undefined">potential density</td>
2459
2460
[354]2461
2462
[108]2463            <td align="undefined" valign="undefined">kg/m<sup>3</sup></td>
2464
2465
[354]2466
2467
[108]2468            <td align="undefined" valign="undefined">requires&nbsp;<a href="chapter_4.1.html#ocean">ocean</a>
2469= <span style="font-style: italic;">.TRUE.</span></td>
2470
2471
[354]2472
2473
[108]2474          </tr>
2475
2476
[354]2477
2478
[108]2479          <tr>
2480
2481
[354]2482
2483
[108]2484            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">s</span></td>
2485
2486
[354]2487
2488
[108]2489            <td style="width: 196px; vertical-align: top;">concentration of
2490the scalar</td>
2491
2492
[354]2493
2494
[108]2495            <td style="vertical-align: top;">1/m<sup>3</sup></td>
2496
2497
[354]2498
2499
[108]2500            <td style="vertical-align: top;">requires&nbsp;<a href="chapter_4.1.html#passive_scalar">passive_scalar</a>
2501= <span style="font-style: italic;">.TRUE.</span></td>
2502
2503
[354]2504
2505
[108]2506          </tr>
2507
2508
[354]2509
2510
[108]2511          <tr>
2512
2513
[354]2514
2515
[108]2516            <td align="undefined" valign="undefined"><span style="font-style: italic;">sa</span></td>
2517
2518
[354]2519
2520
[108]2521            <td align="undefined" valign="undefined">salinity</td>
2522
2523
[354]2524
2525
[108]2526            <td align="undefined" valign="undefined">psu</td>
2527
2528
[354]2529
2530
[108]2531            <td align="undefined" valign="undefined">requires&nbsp;<a href="chapter_4.1.html#ocean">ocean</a>
2532= <span style="font-style: italic;">.TRUE.</span></td>
2533
2534
[354]2535
2536
[108]2537          </tr>
2538
2539
[354]2540
2541
[108]2542          <tr>
2543
[354]2544            <td>shf*</td>
[108]2545
[354]2546            <td>sensible surface heatflux</td>
2547
2548            <td>K m/s</td>
2549
2550            <td>only horizontal cross section is allowed</td>
2551
2552          </tr>
2553
2554          <tr>
2555
2556
2557
2558
[108]2559            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">t*</span></td>
2560
2561
[354]2562
2563
[108]2564            <td style="width: 196px; vertical-align: top;">(near surface)
2565characteristic temperature</td>
2566
2567
[354]2568
2569
[108]2570            <td style="vertical-align: top;">K</td>
2571
2572
[354]2573
2574
[108]2575            <td style="vertical-align: top;">only horizontal cross section
2576is allowed</td>
2577
2578
[354]2579
2580
[108]2581          </tr>
2582
2583
[354]2584
2585
[108]2586          <tr>
2587
2588
[354]2589
2590
[108]2591            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">u</span></td>
2592
2593
[354]2594
2595
[108]2596            <td style="width: 196px; vertical-align: top;">u-component of
2597the velocity</td>
2598
2599
[354]2600
2601
[108]2602            <td style="vertical-align: top;">m/s</td>
2603
2604
[354]2605
2606
[493]2607            <td style="vertical-align: top;"><br>
2608</td>
[108]2609
2610
[354]2611
2612
[108]2613          </tr>
2614
2615
[354]2616
2617
[108]2618          <tr>
2619
2620
[354]2621
2622
[108]2623            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">u*</span></td>
2624
2625
[354]2626
2627
[108]2628            <td style="width: 196px; vertical-align: top;">(near surface)
2629friction velocity</td>
2630
2631
[354]2632
2633
[108]2634            <td style="vertical-align: top;">m/s</td>
2635
2636
[354]2637
2638
[108]2639            <td style="vertical-align: top;">only horizontal cross section
2640is allowed</td>
2641
2642
[354]2643
2644
[108]2645          </tr>
2646
2647
[354]2648
2649
[108]2650          <tr>
2651
2652
[354]2653
2654
[108]2655            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">v</span></td>
2656
2657
[354]2658
2659
[108]2660            <td style="width: 196px; vertical-align: top;">v-component of
2661the velocity</td>
2662
2663
[354]2664
2665
[108]2666            <td style="vertical-align: top;">m/s</td>
2667
2668
[354]2669
2670
[493]2671            <td style="vertical-align: top;"><br>
2672</td>
[108]2673
2674
[354]2675
2676
[108]2677          </tr>
2678
2679
[354]2680
2681
[108]2682          <tr>
2683
2684
[354]2685
2686
[108]2687            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">vpt</span></td>
2688
2689
[354]2690
2691
[108]2692            <td style="width: 196px; vertical-align: top;">virtual potential
2693temperature</td>
2694
2695
[354]2696
2697
[108]2698            <td style="vertical-align: top;">K</td>
2699
2700
[354]2701
2702
[108]2703            <td style="vertical-align: top;">requires&nbsp;<a href="chapter_4.1.html#humidity">humidity</a> = <span style="font-style: italic;">.TRUE.</span></td>
2704
2705
[354]2706
2707
[108]2708          </tr>
2709
2710
[354]2711
2712
[108]2713          <tr>
2714
2715
[354]2716
2717
[108]2718            <td style="width: 106px; vertical-align: top;"><span style="font-style: italic;">w</span></td>
2719
2720
[354]2721
2722
[108]2723            <td style="width: 196px; vertical-align: top;">w-component of
2724the velocity</td>
2725
2726
[354]2727
2728
[108]2729            <td style="vertical-align: top;">m/s</td>
2730
2731
[354]2732
2733
[493]2734            <td style="vertical-align: top;"><br>
2735</td>
[108]2736
2737
[354]2738
2739
[108]2740          </tr>
2741
2742
[354]2743
2744
[108]2745          <tr>
2746
2747
[354]2748
2749
[108]2750            <td style="vertical-align: top;"><span style="font-style: italic;">z0*</span></td>
2751
2752
[354]2753
2754
[108]2755            <td style="vertical-align: top;">roughness length</td>
2756
2757
[354]2758
2759
[108]2760            <td style="vertical-align: top;">m</td>
2761
2762
[354]2763
2764
[493]2765            <td><br>
2766</td>
[108]2767
2768
[354]2769
2770
[108]2771          </tr>
2772
2773
[354]2774
2775
[108]2776       
2777       
[354]2778       
2779       
[108]2780        </tbody>
2781     
2782     
[354]2783     
2784     
[108]2785      </table>
2786
2787
[354]2788
2789
[108]2790      <br>
2791
2792
[354]2793
2794
[108]2795Multiple
[48]2796quantities can be assigned, e.g. <span style="font-weight: bold;">data_output</span>
[108]2797= <span style="font-style: italic;">'e'</span>, <span style="font-style: italic;">'u'</span>, <span style="font-style: italic;">'w'</span>.<br>
2798
2799
[354]2800
2801
[108]2802      <br>
2803
2804
[354]2805
2806
[108]2807By
[5]2808assigning the pure strings from the above table, 3d volume data is
[48]2809output. Cross section data can be output by appending the string <span style="font-style: italic;">'_xy'</span>, <span style="font-style: italic;">'_xz'</span>, or <span style="font-style: italic;">'_yz'</span> to the
2810respective quantities. Time averaged&nbsp;output is created by
2811appending the string <span style="font-style: italic;">'_av'
[108]2812      </span>(for
[5]2813cross section data, this string must be appended after the cross
2814section string). Cross section data can also be (additionally) averaged
2815along the direction normal to the respective section (see below).
2816Assignments of quantities can be given in arbitrary
[108]2817order:<br>
2818
2819
[354]2820
2821
[108]2822      <br>
2823
2824
[354]2825
2826
[108]2827Example:<br>
2828
2829
[354]2830
2831
[108]2832      <br>
2833
2834
[354]2835
2836
[108]2837     
2838     
[354]2839     
2840     
[108]2841      <div style="margin-left: 40px;"><span style="font-weight: bold;">data_output</span> = <span style="font-style: italic;">'u'</span>, <span style="font-style: italic;">'pt_xz_av'</span>, <span style="font-style: italic;">'w_xy'</span>, <span style="font-style: italic;">'u_av'</span>.<br>
2842
2843
[354]2844
2845
[108]2846      </div>
2847
2848
[354]2849
2850
[108]2851      <br>
2852
2853
[354]2854
2855
[108]2856This
[5]2857example will create the following output: instantaneous 3d volume data
2858of u-velocity component (by default on file DATA_3D_NETCDF), temporally
2859averaged 3d volume data of u-velocity component (by default on file
2860DATA_3D_AV_NETCDF), instantaneous horizontal cross section data of
2861w-velocity component (by default on file DATA_2D_XY_NETCDF), and
2862temporally averaged vertical cross section data of potential
[108]2863temperature (by default on file DATA_2D_XZ_AV_NETCDF).<br>
2864
2865
[354]2866
2867
[108]2868      <br>
2869
2870
[354]2871
2872
[108]2873The
[48]2874user is allowed to extend the above list of quantities by defining his
[108]2875own output quantities (see the user-parameter <a href="chapter_4.3.html#data_output_user">data_output_user</a>).<br>
2876
2877
[354]2878
2879
[108]2880      <br>
2881
2882
[354]2883
2884
[108]2885The
[48]2886time interval of the output times is determined via <a href="#dt_data_output">dt_data_output</a>.
[5]2887This is valid for all types of output quantities by default. Individual
[48]2888time intervals for instantaneous &nbsp;(!) 3d and section data can
2889be
[108]2890declared using <a href="#dt_do3d">dt_do3d</a>, <a href="#dt_do2d_xy">dt_do2d_xy</a>, <a href="#dt_do2d_xz">dt_do2d_xz</a>, and <a href="#dt_do2d_yz">dt_do2d_yz</a>.<br>
2891
2892
[354]2893
2894
[108]2895      <br>
2896
2897
[354]2898
2899
[108]2900Also,
[48]2901an individual time interval for output of temporally averaged data can
2902be assigned using parameter <a href="#dt_data_output_av">dt_data_output_av</a>.
2903This applies to both 3d volume and cross section data. The length of
[108]2904the averaging interval is controlled via parameter <a href="#averaging_interval">averaging_interval</a>.<br>
2905
2906
[354]2907
2908
[108]2909      <br>
2910
2911
[354]2912
2913
[108]2914The
[48]2915parameter <a href="#skip_time_data_output">skip_time_data_output</a>
2916can be used to shift data output activities for a given time interval.
2917Individual intervals can be set using <a href="#skip_time_do3d">skip_time_do3d</a>,
[108]2918      <a href="#skip_time_do2d_xy">skip_time_do2d_xy</a>, <a href="#skip_time_do2d_xz">skip_time_do2d_xz</a>, <a href="#skip_time_do2d_yz">skip_time_do2d_yz</a>, and <a href="#skip_time_data_output_av">skip_time_data_output_av</a>.<br>
2919
2920
[354]2921
2922
[108]2923     
2924     
[354]2925     
2926     
[108]2927      <p>With
[48]2928the parameter <a href="chapter_4.2.html#nz_do3d">nz_do3d</a>&nbsp;
[5]2929the output can be limited in the vertical direction up to a certain
[108]2930grid point.<br>
2931
2932
[354]2933
2934
[108]2935 </p>
2936
2937
[354]2938
2939
[108]2940 Cross sections extend through the
[48]2941total model
2942domain. In the two horizontal directions all grid points with 0
2943&lt;= i
[5]2944&lt;= nx+1 and 0 &lt;= j
[48]2945&lt;= ny+1 are output so that in case of cyclic boundary conditions
2946the
2947complete total domain is represented. The location(s) of the cross
2948sections can be defined with parameters <a href="#section_xy">section_xy</a>,
[108]2949      <a href="#section_xz">section_xz</a>, and <a href="#section_yz">section_yz</a>. Assigning <span style="font-weight: bold;">section_..</span> = <span style="font-style: italic;">-1</span>
[48]2950causes&nbsp;the output data to be averaged along the direction
[108]2951normal to the respective section.<br>
2952
2953
[354]2954
2955
[108]2956      <br>
2957
2958
[354]2959
2960
[108]2961      <br>
2962
2963
[354]2964
2965
[108]2966      <span style="font-weight: bold;">Output of user defined quantities:</span><br>
2967
2968
[354]2969
2970
[108]2971      <br>
2972
2973
[354]2974
2975
[108]2976Beside
[5]2977the standard quantities from the above list, the user can output any
2978other quantities. These have to be defined and calculated within the
[48]2979user-defined code (see <a href="chapter_3.5.4.html">3.5.4</a>).
2980They can be selected for output with the user-parameter <a href="chapter_4.3.html#data_output_user">data_output_user</a>
2981for which the same rules apply as for <span style="font-weight: bold;">data_output</span>.
[5]2982Output of the user defined quantities (time interval, averaging,
2983selection of cross sections, etc.) is controlled with the parameters
2984listed above and data are written to the same file(s) as the standard
[108]2985quantities.<br>
2986
2987
[354]2988
2989
[108]2990      <br>
2991
2992
[354]2993
2994
[108]2995     
2996     
[354]2997     
2998     
[108]2999      <p style="font-weight: bold;">Output
3000on parallel machines:</p>
3001
3002
[354]3003
3004
[108]3005     
3006     
[354]3007     
3008     
[108]3009      <p>
[5]3010By default, with parallel runs, processors output only data
3011of their respective subdomains into seperate local files (file names
3012are
3013constructed by appending the four digit processor ID, e.g.
[48]3014&lt;filename&gt;_0000, &lt;filename&gt;_0001, etc.).
3015After PALM has
[5]3016finished, the contents of these individual
[48]3017files are sampled into one final file<span style="font-weight: bold;"></span>
3018using the program <tt><font style="font-size: 11pt;" size="2">combine_plot_fields.x</font></tt>
[5]3019(to be started e.g. by a suitable OUTPUT command in the <span style="font-weight: bold;">mrun</span>
[108]3020configuration file).</p>
3021
3022
[354]3023
3024
[108]3025 
3026     
3027     
[354]3028     
3029     
[108]3030      <p>Alternatively, PALM is able to
[48]3031collect all grid points of a
3032cross section on PE0 before output is done. In this case only
3033one&nbsp;
[5]3034output file (DATA_2D_XY_NETCDF, etc.) is created and <tt><font style="font-size: 11pt;" size="2">combine_plot_fields.x</font></tt>
[48]3035does not have to be called. In case of very large numbers of horizontal
3036gridpoints, sufficient
3037memory is required on PE0.&nbsp; This method can be used by
3038assigning <a href="chapter_4.2.html#data_output_2d_on_each_pe">data_output_2d_on_each_pe</a>
[108]3039= <i>.F.</i>.</p>
3040
3041
[354]3042
3043
[108]3044     
3045     
[354]3046     
3047     
[108]3048      <p>3d volume data output is
[48]3049always handled seperately by each processor so that <span style="font-family: monospace;">combine_plot_fields.x</span>
[108]3050has to be called anyway after PALM has been finished.</p>
3051
3052
[354]3053
3054
[108]3055     
3056     
[354]3057     
3058     
[108]3059      <p><br>
3060
3061
[354]3062
3063
[108]3064      <span style="font-weight: bold;">Old formats:</span></p>
3065
3066
3067
[354]3068
3069
[108]3070     
3071     
[354]3072     
3073     
[108]3074      <p>Beside
[48]3075the NetCDF format,&nbsp;2d cross section data and 3d volume data
3076can
[5]3077also be output, for historical reasons, in a different (binary) format
[108]3078using parameter <a href="#data_output_format">data_output_format</a>.</p>
3079
3080
[354]3081
3082
[108]3083     
3084     
[354]3085     
3086     
[108]3087      <p>By
[48]3088assigning <span style="font-weight: bold;">data_output_format
[108]3089      </span>= <span style="font-style: italic;">'avs'</span>,
[48]3090the 3d volume data is output to the local file <a href="chapter_3.4.html#PLOT3D_DATA">PLOT3D_DATA</a>.
[5]3091Output is in FORTRAN binary format&nbsp;readable by
3092the plot software <span style="font-weight: bold;">AVS</span>.&nbsp;
3093The order of data on the file follows the order used in the assignment
[48]3094for <b>data_output</b> (e.g. <b>data_output</b>
3095= <span style="font-style: italic;">'p'</span>, <span style="font-style: italic;">'v'</span>,...&nbsp;
[5]3096means that the file starts with the pressure data, followed by the
3097v-component of the velocity, etc.). Both instantaneous and time
3098averaged data are written on this file! Additional to this file, PALM
3099creates
3100a second binary file (local name <a href="chapter_3.4.html#PLOT3D_COOR">PLOT3D_COOR</a>)
3101with coordinate information needed by <span style="font-weight: bold;">AVS</span>.
3102As third and
3103fourth file two ASCII files are created (AVS-FLD-format, local name <a href="chapter_3.4.html#PLOT3D_FLD">PLOT3D_FLD</a>
3104and <a href="chapter_3.4.html#PLOT3D_FLD_COOR">PLOT3D_FLD_COOR</a>),
3105which describe the contents of the data file and/or coordinate file
3106and are used by AVS. However, AVS expects the content description in
3107one file. This needs the local file PLOT3D_FLD_COOR to be appended to
3108the file
3109PLOT3D_FLD (by suitable OUTPUT command in the <span style="font-weight: bold;">mrun</span>
[493]3110configuration file: &#8220;<span style="font-family: monospace;">cat
3111PLOT3D_FLD_COOR &gt;&gt; PLOT3D_FLD</span>&#8221;)
[48]3112after PALM has
3113finished.&nbsp;To reduce the amount of data, output to this file
3114can be done
[5]3115in
[48]3116compressed form (see <a href="chapter_4.2.html#do3d_compress">do3d_compress</a>).
3117Further details about plotting 3d volume data with <span style="font-weight: bold;">AVS </span>can be found in
[108]3118      <a href="chapter_4.5.5.html">chapter
31194.5.5</a>.</p>
3120
3121
[354]3122
3123
[108]3124By assigning <span style="font-weight: bold;">data_output_format </span>=
3125      <span style="font-style: italic;">'iso2d'</span>,
[48]3126the cross section data is output to the local files <a href="chapter_3.4.html#PLOT2D_XY">PLOT2D_XY</a>, <a href="chapter_3.4.html#PLOT2D_XZ">PLOT2D_XZ</a>, and <a href="chapter_3.4.html#PLOT2D_YZ">PLOT2D_YZ</a>.
[5]3127Output is in FORTRAN binary format&nbsp;readable by
3128the plot software&nbsp;<span style="font-weight: bold;">iso2d</span>.&nbsp;
3129The order of data on the files follows the order used in the assignment
[48]3130for <b>data_output</b> (e.g. <b>data_output</b>
3131= <span style="font-style: italic;">'p_xy'</span>, <span style="font-style: italic;">'v_xy_av'</span>,...&nbsp;
[5]3132means that the file containing the horizontal cross section data starts
3133with the instantaneous pressure data, followed by the
3134temporally averaged v-component of the velocity, etc.). Both
3135instantaneous and time averaged data are written on this
3136file!Additional to these binary files, PALM
3137creates NAMELIST parameter files
3138(local names <a href="chapter_3.4.html#PLOT2D_XY_GLOBAL">PLOT2D_XY_GLOBAL</a>,
[108]3139      <a href="chapter_3.4.html#PLOT2D_XY_LOCAL">PLOT2D_XY_LOCAL</a>,
3140      <a href="chapter_3.4.html#PLOT2D_XZ_GLOBAL">PLOT2D_XZ_GLOBAL</a>,
3141      <a href="chapter_3.4.html#PLOT2D_XZ_LOCAL">PLOT2D_XZ_LOCAL</a>,
3142      <a href="chapter_3.4.html#PLOT2D_YZ_GLOBAL">PLOT2D_YZ_GLOBAL</a>,
3143      <a href="chapter_3.4.html#PLOT2D_YZ_LOCAL">PLOT2D_YZ_LOCAL</a>)
[5]3144which can be used as parameter input files for the plot software <a href="http://www.muk.uni-hannover.de/institut/software/iso2d_beschreibung.html">iso2d</a>.
3145That needs local files with suffix _LOCAL to be appended to the
3146respective files with suffix _GLOBAL (by
3147suitable OUTPUT commands in the <span style="font-weight: bold;">mrun</span>
[493]3148configuration file, e.g.: &#8220;<span style="font-family: monospace;">cat
3149PLOT2D_XY_LOCAL &gt;&gt; PLOT2D_XY_GLOBAL</span>&#8221;)
[48]3150after PALM has
3151finished. Cross sections can be directly plotted with <span style="font-weight: bold;">iso2d</span> using the
3152respective data and
[5]3153parameter file. The plot layout is steered via the parameter input
3154file.
3155The values of these <span style="font-weight: bold;">iso2d</span>
3156parameters are determined by a set of mostly internal PALM parameters
3157(exception: <a href="chapter_4.2.html#z_max_do2d">z_max_do2d</a>).
3158All parameter values can be changed by editing the parameter input
[48]3159file.&nbsp;Further details about plotting 2d cross sections with <span style="font-weight: bold;">iso2d </span>can be found
3160in <a href="chapter_4.5.4.html">chapter
[108]31614.5.4</a>.<br>
3162
3163
[354]3164
3165
[108]3166      <br>
3167
3168
[354]3169
3170
[108]3171      <span style="font-weight: bold;">Important:</span><br>
3172
3173
[354]3174
3175
[108]3176There
[48]3177is no guarantee that iso2d- and avs-output will be available in future
[108]3178PALM versions (later than 3.0). </td>
3179
3180
[354]3181
3182
[108]3183 </tr>
3184
3185
[354]3186
3187
[108]3188 <tr>
3189
3190
[354]3191
3192
[108]3193 <td style="vertical-align: top;"><a name="data_output_format"></a><span style="font-weight: bold;">data_output_format</span><br>
3194
3195
3196
[354]3197
3198
[108]3199      </td>
3200
3201
[354]3202
3203
[108]3204 <td style="vertical-align: top;">C * 10 (10) </td>
3205
3206
3207
[354]3208
3209
[108]3210      <td style="vertical-align: top;"><span style="font-style: italic;">'netcdf'</span> </td>
3211
3212
3213
[354]3214
3215
[108]3216      <td style="vertical-align: top;">Format of output data.<br>
3217
3218
[354]3219
3220
[108]3221      <br>
3222
3223
[354]3224
3225
[108]3226By
[48]3227default, all data (profiles, time
[5]3228series, spectra, particle data, cross sections, volume data) are output
[493]3229in NetCDF 64bit-offset format (see chapter <a href="chapter_4.5.1.html">4.5.1</a>).
[48]3230Exception: restart data (local files <a href="chapter_3.4.html#BININ">BININ</a>, <a href="chapter_3.4.html#BINOUT">BINOUT</a>, <a href="chapter_3.4.html#PARTICLE_RESTART_DATA_IN">PARTICLE_RESTART_DATA_IN</a>,
[108]3231      <a href="chapter_3.4.html#PARTICLE_RESTART_DATA_OUT">PARTICLE_RESTART_DATA_OUT</a>)
3232are always output in FORTRAN binary format.<br>
3233
3234
[354]3235
3236
[108]3237      <br>
3238
3239
[354]3240
3241
[108]3242The
[493]3243numerical precision of the NetCDF output is determined with parameter <a href="chapter_4.1.html#netcdf_precision">netcdf_precision</a>.<br>
[108]3244
3245
[354]3246
3247
[493]3248      <br>Other NetCDF formats (classic, NetCDF4/HDF5) can be selected with parameter <a href="#netcdf_data_format">netcdf_data_format</a>.<br>
[108]3249
3250
[354]3251
3252
[108]3253      <br>
3254
3255
[354]3256
3257
[108]3258For historical
[48]3259reasons, other data formats are still available. Beside 'netcdf', <span style="font-weight: bold;">data_output_format</span>
[108]3260may be assigned the following values:<br>
3261
3262
[354]3263
3264
[108]3265      <br>
3266
3267
[354]3268
3269
[108]3270     
3271     
[354]3272     
3273     
[108]3274      <table style="text-align: left; width: 594px; height: 104px;" border="1" cellpadding="2" cellspacing="2">
3275
3276
[354]3277
3278
[108]3279        <tbody>
3280
3281
[354]3282
3283
[108]3284          <tr>
3285
3286
[354]3287
3288
[108]3289            <td style="vertical-align: top;"><span style="font-style: italic;">'profil'</span></td>
3290
3291
[354]3292
3293
[108]3294            <td>output
[48]3295of profiles,&nbsp;time series and spectra in ASCII format to be
3296read by the graphic software <span style="font-weight: bold;">profil
[108]3297            </span>(see chapters <a href="chapter_4.5.2.html">4.5.2</a>,
3298            <a href="#chapter_4.5.3.html">4.5.3</a>)</td>
3299
3300
[354]3301
3302
[108]3303          </tr>
3304
3305
[354]3306
3307
[108]3308          <tr>
3309
3310
[354]3311
3312
[108]3313            <td style="vertical-align: top;"><span style="font-style: italic;">'iso2d'</span></td>
3314
3315
[354]3316
3317
[108]3318            <td>output
[48]3319of 2d cross-sections in FORTRAN binary format to be read by the graphic
3320software <span style="font-weight: bold;">iso2d</span>
[108]3321(see chapter <a href="chapter_4.5.4.html">4.5.4</a>)</td>
3322
3323
[354]3324
3325
[108]3326          </tr>
3327
3328
[354]3329
3330
[108]3331          <tr>
3332
3333
[354]3334
3335
[108]3336            <td style="vertical-align: top;"><span style="font-style: italic;">'avs'</span></td>
3337
3338
[354]3339
3340
[108]3341            <td>output
[48]3342of 3d volume data in FORTRAN binary format to be read by the graphic
3343software <span style="font-weight: bold;">AVS</span>
[108]3344(see chapter <a href="chapter_4.5.5.html">4.5.5</a>)</td>
3345
3346
[354]3347
3348
[108]3349          </tr>
3350
3351
[354]3352
3353
[108]3354       
3355       
[354]3356       
3357       
[108]3358        </tbody>
3359     
3360     
[354]3361     
3362     
[108]3363      </table>
3364
3365
[354]3366
3367
[108]3368      <br>
3369
3370
[354]3371
3372
[108]3373Multiple
[48]3374values can be assigned to <span style="font-weight: bold;">data_output_format</span>,
3375i.e. if the user wants to have both the "old" data format suitable for <span style="font-weight: bold;">iso2d</span> as well as
3376cross section data in NetCDF format, then <span style="font-weight: bold;">data_output_format</span> =
[108]3377      <span style="font-style: italic;">'iso2d'</span>, <span style="font-style: italic;">'netcdf'</span> has to be
3378assigned.<br>
3379
3380
[354]3381
3382
[108]3383      <br>
3384
3385
[354]3386
3387
[108]3388      <span style="font-weight: bold;">Warning:</span>
[48]3389There is no guarantee that the "old" formats will be available in
[108]3390future PALM versions (beyond 3.0)!<br>
3391
3392
[354]3393
3394
[108]3395 </td>
3396
3397
[354]3398
3399
[108]3400 </tr>
3401
3402
[354]3403
3404
[108]3405 <tr>
3406
3407
3408
[354]3409
3410
[108]3411      <td style="vertical-align: top;"> 
3412     
3413     
[354]3414     
3415     
[108]3416      <p><a name="data_output_pr"></a><b>data_output_pr</b></p>
3417
3418
3419
[354]3420
3421
[108]3422      </td>
3423
3424
[354]3425
3426
[108]3427 <td style="vertical-align: top;">C *
[48]342810&nbsp; <br>
[108]3429
3430
3431
[354]3432
3433
[108]3434(100)</td>
3435
3436
[354]3437
3438
[108]3439 <td style="vertical-align: top;"><i>100
3440* ' '</i></td>
3441
3442
[354]3443
3444
[108]3445 <td style="vertical-align: top;">
3446     
3447     
[354]3448     
3449     
[108]3450      <p>Quantities for which vertical profiles (horizontally averaged)
3451are to be output.&nbsp; </p>
3452
3453
[354]3454
3455
[108]3456 
3457     
3458     
[354]3459     
3460     
[108]3461      <p>By default vertical
[48]3462profile data is output to the local file <a href="chapter_3.4.html#DATA_1D_PR_NETCDF">DATA_1D_PR_NETCDF</a>.
3463The file's format is NetCDF.&nbsp; Further details about processing
[108]3464NetCDF data are given in chapter <a href="chapter_4.5.1.html">4.5.1</a>.</p>
3465
3466
[354]3467
3468
[108]3469     
3470     
[354]3471     
3472     
[108]3473      <p>For
[48]3474historical reasons, data can also be output in ASCII-format on local
3475file <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>
3476which is readable by the graphic software <span style="font-weight: bold;">profil</span>. See
3477parameter <a href="#data_output_format">data_output_format</a>
[108]3478for defining the format in which data shall be output.<br>
3479
3480
[354]3481
3482
[108]3483 </p>
3484
3485
3486
[354]3487
3488
[108]3489     
3490     
[354]3491     
3492     
[108]3493      <p>For horizontally averaged vertical
[48]3494profiles always <span style="font-weight: bold;">all</span>
3495vertical
[5]3496grid points (0 &lt;= k &lt;= nz+1) are output to file. Vertical
3497profile data refers to the total domain but profiles for subdomains can
3498also be output (see <a href="chapter_4.1.html#statistic_regions">statistic_regions</a>).&nbsp;
[108]3499      </p>
3500
3501
[354]3502
3503
[108]3504 
3505     
3506     
[354]3507     
3508     
[108]3509      <p>The temporal interval of the output times of
[48]3510profiles is
[5]3511assigned via the parameter <a href="chapter_4.2.html#dt_dopr">dt_dopr</a>.
[48]3512Within the file <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>,
3513the profiles are ordered with respect to their
[108]3514output times.</p>
3515
3516
[354]3517
3518
[108]3519     
3520     
[354]3521     
3522     
[108]3523      <p>Profiles can also be temporally
[127]3524averaged (see <a href="chapter_4.2.html#averaging_interval_pr">averaging_interval_pr</a>).<br>
[108]3525
3526
3527
[354]3528
3529
[108]3530      </p>
3531
3532
[354]3533
3534
[108]3535 
3536     
3537     
[354]3538     
3539     
[108]3540      <p>The following list shows the values which can be
[48]3541assigned to <span style="font-weight: bold;">data_output_pr</span>.
[5]3542The profile data is either defined on
[48]3543u-v-levels (variables marked in <font color="#ff6600">red</font>)
3544or
3545on w-levels (<font color="#33ff33">green</font>).
3546According to this,
[5]3547the
3548z-coordinates of the individual profiles vary. Beyond that, with a
3549Prandtl layer switched on (<a href="chapter_4.1.html#prandtl_layer">prandtl_layer</a>)
3550the lowest output
[48]3551level is z = zu(1) instead of z = zw(0) for profiles <i>w''
3552u'',w''v"</i>, <i>wu</i> and <i>wv</i>
[127]3553. Turbulence quantities such as&nbsp;<span style="font-style: italic;">w*u* &nbsp;</span>or <span style="font-style: italic;">u*2</span> are calculated from turbulent fluctuations that are defined as deviations from the instantaneous horizontal average.
[108]3554
3555
3556 </p>
3557
3558
[354]3559
3560
[108]3561 
3562     
3563     
[354]3564     
3565     
[108]3566      <table style="text-align: left; width: 100%;" cellpadding="2" cellspacing="2">
3567
3568
[354]3569
3570
[108]3571 <tbody>
3572
3573
[354]3574
3575
[108]3576 <tr>
3577
3578
[354]3579
3580
[108]3581 <td style="vertical-align: top;"><font color="#ff6600"><i>u</i></font></td>
3582
3583
3584
[354]3585
3586
[108]3587            <td style="vertical-align: top;">u-component of the
3588velocity (in m/s).</td>
3589
3590
[354]3591
3592
[108]3593 </tr>
3594
3595
[354]3596
3597
[108]3598 <tr>
3599
3600
[354]3601
3602
[108]3603 <td style="vertical-align: top;"><font color="#ff6600"><i>v</i></font></td>
3604
3605
3606
[354]3607
3608
[108]3609            <td style="vertical-align: top;">v-component of the
3610velocity (in m/s).</td>
3611
3612
[354]3613
3614
[108]3615 </tr>
3616
3617
[354]3618
3619
[108]3620 <tr>
3621
3622
[354]3623
3624
[108]3625 <td style="vertical-align: top;"><font color="#33ff33"><i>w</i></font></td>
3626
3627
3628
[354]3629
3630
[108]3631            <td style="vertical-align: top;">w-component of the
3632velocity (in m/s).</td>
3633
3634
[354]3635
3636
[108]3637 </tr>
3638
3639
[354]3640
3641
[108]3642 <tr>
3643
3644
[354]3645
3646
[108]3647 <td style="vertical-align: top;"><font color="#ff6600"><i>pt</i></font></td>
3648
3649
3650
[354]3651
3652
[108]3653            <td style="vertical-align: top;">Potential temperature (in
3654K).</td>
3655
3656
[354]3657
3658
[108]3659 </tr>
3660
3661
[354]3662
3663
[108]3664 <tr>
3665
3666
[354]3667
3668
[108]3669 <td style="vertical-align: top;"><font color="#ff6600"><i>vpt</i></font></td>
3670
3671
3672
[354]3673
3674
[108]3675            <td style="vertical-align: top;">Virtual potential
3676temperature (in K).</td>
3677
3678
[354]3679
3680
[108]3681 </tr>
3682
3683
[354]3684
3685
[108]3686 <tr>
3687
3688
[354]3689
3690
[108]3691 <td style="vertical-align: top;"><font color="#ff6600"><i>lpt</i></font></td>
3692
3693
3694
[354]3695
3696
[108]3697            <td style="vertical-align: top;">Potential liquid water
3698temperature (in K).</td>
3699
3700
[354]3701
3702
[108]3703 </tr>
3704
3705
[354]3706
3707
[108]3708 <tr>
3709
3710
[354]3711
3712
[108]3713 <td style="vertical-align: top;"><font color="#ff6600"><i>q</i></font></td>
3714
3715
3716
[354]3717
3718
[108]3719            <td style="vertical-align: top;">Total water content
3720(in kg/kg).</td>
3721
3722
[354]3723
3724
[108]3725 </tr>
3726
3727
[354]3728
3729
[108]3730 <tr>
3731
3732
[354]3733
3734
[108]3735 <td style="vertical-align: top;"><font color="#ff6600"><i>qv</i></font></td>
3736
3737
3738
[354]3739
3740
[108]3741            <td style="vertical-align: top;">Specific humidity (in
3742kg/kg).</td>
3743
3744
[354]3745
3746
[108]3747 </tr>
3748
3749
[354]3750
3751
[108]3752 <tr>
3753
3754
[354]3755
3756
[108]3757 <td style="vertical-align: top;"><font color="#ff6600"><i>ql</i></font></td>
3758
3759
3760
[354]3761
3762
[108]3763            <td style="vertical-align: top;">Liquid water content
3764(in kg/kg).</td>
3765
3766
[354]3767
3768
[108]3769 </tr>
3770
3771
[354]3772
3773
[108]3774 <tr>
3775
3776
[354]3777
3778
[108]3779            <td align="undefined" valign="undefined"><span style="font-style: italic; color: rgb(255, 102, 0);">rho</span></td>
3780
3781
[354]3782
3783
[108]3784            <td align="undefined" valign="undefined">Potential density (in kg/m<sup>3</sup>).</td>
3785
3786
[354]3787
3788
[108]3789          </tr>
3790
3791
[354]3792
3793
[108]3794          <tr>
3795
3796
[354]3797
3798
[108]3799 <td style="vertical-align: middle; font-style: italic;"><font color="#ff6600">s</font></td>
3800
3801
3802
[354]3803
3804
[108]3805            <td style="vertical-align: top;">Scalar concentration (in
3806kg/m<sup>3</sup>).</td>
3807
3808
[354]3809
3810
[108]3811 </tr>
3812
3813
[354]3814
3815
[108]3816 <tr>
3817
3818
[354]3819
3820
[108]3821            <td align="undefined" valign="undefined"><span style="font-style: italic; background-color: rgb(255, 255, 255); color: rgb(255, 102, 0);">sa</span></td>
3822
3823
[354]3824
3825
[108]3826            <td align="undefined" valign="undefined">Salinity (in psu).</td>
3827
3828
[354]3829
3830
[108]3831          </tr>
3832
3833
[354]3834
3835
[108]3836          <tr>
3837
3838
[354]3839
3840
[108]3841 <td style="vertical-align: middle;"><font color="#ff6600"><i>e</i></font></td>
3842
3843
3844
[354]3845
3846
[108]3847            <td style="vertical-align: top;">Turbulent kinetic energy
[5]3848(TKE, subgrid-scale) (in m<sup>2</sup>/s<sup>2</sup>).</td>
[108]3849
3850
3851
[354]3852
3853
[108]3854          </tr>
3855
3856
[354]3857
3858
[108]3859 <tr>
3860
3861
[354]3862
3863
[108]3864 <td style="vertical-align: middle;"><font color="#ff6600"><i>e*</i></font></td>
3865
3866
3867
[354]3868
3869
[108]3870            <td style="vertical-align: top;">Perturbation energy
[5]3871(resolved) (in m<sup>2</sup>/s<sup>2</sup>).</td>
[108]3872
3873
3874
[354]3875
3876
[108]3877          </tr>
3878
3879
3880
3881
[354]3882 <tr>
3883
3884            <td align="undefined" valign="undefined"><span style="font-style: italic; color: rgb(255, 0, 0);">p</span></td>
3885
3886            <td align="undefined" valign="undefined">Perturbation pressure (in Pa)</td>
3887
3888          </tr>
3889
3890          <tr>
3891
3892
3893
3894
[108]3895 <td style="vertical-align: middle;"><font color="#ff6600"><i>km</i></font></td>
3896
3897
3898
[354]3899
3900
[108]3901            <td style="vertical-align: top;">Eddy diffusivity for
3902momentum (in m<sup>2</sup>/s).</td>
3903
3904
[354]3905
3906
[108]3907 </tr>
3908
3909
[354]3910
3911
[108]3912 <tr>
3913
3914
3915
[354]3916
3917
[108]3918            <td style="vertical-align: middle;"><font color="#ff6600"><i>kh</i></font></td>
3919
3920
3921
[354]3922
3923
[108]3924            <td style="vertical-align: top;">Eddy diffusivity for heat
3925(in m<sup>2</sup>/s).</td>
3926
3927
[354]3928
3929
[108]3930 </tr>
3931
3932
[354]3933
3934
[108]3935 <tr>
3936
3937
[354]3938
3939
[108]3940 <td style="vertical-align: top;"><font color="#ff6600"><i>l</i></font></td>
3941
3942
3943
[354]3944
3945
[108]3946            <td style="vertical-align: top;">Mixing length (in m).</td>
3947
3948
3949
[354]3950
3951
[108]3952          </tr>
3953
3954
[354]3955
3956
[108]3957 <tr>
3958
3959
[354]3960
3961
[108]3962 <td style="vertical-align: middle;"><font color="#33ff33"><i>w"u"</i></font></td>
3963
3964
3965
[354]3966
3967
[108]3968            <td style="vertical-align: top;">u-component of the
[5]3969subgrid-scale vertical momentum flux (in m<sup>2</sup>/s<sup>2</sup>).</td>
[108]3970
3971
3972
[354]3973
3974
[108]3975          </tr>
3976
3977
[354]3978
3979
[108]3980 <tr>
3981
3982
[354]3983
3984
[108]3985 <td style="vertical-align: middle;"><font color="#33ff33"><i>w*u*</i></font></td>
3986
3987
3988
[354]3989
3990
[108]3991            <td style="vertical-align: top;">u-component of the
[5]3992resolved vertical momentum flux (in m<sup>2</sup>/s<sup>2</sup>).</td>
[108]3993
3994
3995
[354]3996
3997
[108]3998          </tr>
3999
4000
[354]4001
4002
[108]4003 <tr>
4004
4005
[354]4006
4007
[108]4008 <td style="vertical-align: middle;"><font color="#33ff33"><i>wu</i></font></td>
4009
4010
4011
[354]4012
4013
[108]4014            <td style="vertical-align: top;">u-component of the total
[48]4015vertical momentum flux (<i>w"u"</i> + <i>w*u*</i>)
[108]4016(in m<sup>2</sup>/s<sup>2</sup>).</td>
4017
4018
[354]4019
4020
[108]4021 </tr>
4022
4023
4024
[354]4025
4026
[108]4027          <tr>
4028
4029
[354]4030
4031
[108]4032 <td style="vertical-align: middle;"><font color="#33ff33"><i>w"v"</i></font></td>
4033
4034
4035
[354]4036
4037
[108]4038            <td style="vertical-align: top;">v-component of the
[5]4039subgrid-scale vertical momentum flux (in m<sup>2</sup>/s<sup>2</sup>).</td>
[108]4040
4041
4042
[354]4043
4044
[108]4045          </tr>
4046
4047
[354]4048
4049
[108]4050 <tr>
4051
4052
[354]4053
4054
[108]4055 <td style="vertical-align: middle;"><font color="#33ff33"><i>w*v*</i></font></td>
4056
4057
4058
[354]4059
4060
[108]4061            <td style="vertical-align: top;">v-component of the
[5]4062resolved vertical momentum flux (in m<sup>2</sup>/s<sup>2</sup>).</td>
[108]4063
4064
4065
[354]4066
4067
[108]4068          </tr>
4069
4070
[354]4071
4072
[108]4073 <tr>
4074
4075
[354]4076
4077
[108]4078 <td style="vertical-align: middle;"><font color="#33ff33"><i>wv</i></font></td>
4079
4080
4081
[354]4082
4083
[108]4084            <td style="vertical-align: top;">v-component of the total
[48]4085vertical momentum flux (<i>w"v"</i> + <i>w*v*</i>)
[108]4086(in m<sup>2</sup>/s<sup>2</sup>).</td>
4087
4088
[354]4089
4090
[108]4091 </tr>
4092
4093
4094
[354]4095
4096
[108]4097          <tr>
4098
4099
[354]4100
4101
[108]4102 <td style="vertical-align: top;"><font color="#33ff33"><i>w"pt"</i></font></td>
4103
4104
4105
[354]4106
4107
[108]4108            <td style="vertical-align: top;">Subgrid-scale vertical
4109sensible heat flux (in K m/s).</td>
4110
4111
[354]4112
4113
[108]4114 </tr>
4115
4116
[354]4117
4118
[108]4119 <tr>
4120
4121
[354]4122
4123
[108]4124 <td style="vertical-align: top;"><font color="#33ff33"><i>w*pt*</i></font></td>
4125
4126
4127
[354]4128
4129
[108]4130            <td style="vertical-align: top;">Resolved vertical
[48]4131sensible
[108]4132heat flux (in K m/s).</td>
4133
4134
[354]4135
4136
[108]4137 </tr>
4138
4139
[354]4140
4141
[108]4142 <tr>
4143
4144
[354]4145
4146
[108]4147 <td style="vertical-align: top;"><font color="#33ff33"><i>wpt</i></font></td>
4148
4149
4150
[354]4151
4152
[108]4153            <td style="vertical-align: top;">Total vertical sensible
[5]4154heat flux (<i>w"pt"</i> + <i>w*pt*</i>)
4155(in K
[108]4156m/s).</td>
4157
4158
[354]4159
4160
[108]4161 </tr>
4162
4163
[354]4164
4165
[108]4166 <tr>
4167
4168
[354]4169
4170
[108]4171 <td style="vertical-align: top;"><font color="#33ff33"><i>w*pt*BC</i></font></td>
4172
4173
4174
[354]4175
4176
[108]4177            <td style="vertical-align: top;">Subgrid-scale vertical
[5]4178sensible heat flux using the
[108]4179Bott-Chlond scheme (in K m/s).</td>
4180
4181
[354]4182
4183
[108]4184 </tr>
4185
4186
[354]4187
4188
[108]4189 <tr>
4190
4191
[354]4192
4193
[108]4194 <td style="vertical-align: top;"><font color="#33ff33"><i>wptBC</i></font></td>
4195
4196
4197
[354]4198
4199
[108]4200            <td style="vertical-align: top;">Total vertical sensible
[5]4201heat flux using the Bott-Chlond scheme
4202(<i>w"pt"</i>
[108]4203+ <i>w*pt*BC</i>) (in K m/s).</td>
4204
4205
[354]4206
4207
[108]4208 </tr>
4209
4210
[354]4211
4212
[108]4213 <tr>
4214
4215
4216
[354]4217
4218
[108]4219            <td style="vertical-align: top;"><font color="#33ff33"><i>w"vpt"</i></font></td>
4220
4221
4222
[354]4223
4224
[108]4225            <td style="vertical-align: top;">Subgrid-scale vertical
4226buoyancy flux (in K m/s).</td>
4227
4228
[354]4229
4230
[108]4231 </tr>
4232
4233
[354]4234
4235
[108]4236 <tr>
4237
4238
[354]4239
4240
[127]4241 <td style="vertical-align: top;"><font color="#33ff33"><i>w*vpt*</i></font></td>
[108]4242
4243
4244
[354]4245
4246
[108]4247            <td style="vertical-align: top;">Resolved vertical
[48]4248buoyancy
[108]4249flux (in K m/s).</td>
4250
4251
[354]4252
4253
[108]4254 </tr>
4255
4256
[354]4257
4258
[108]4259 <tr>
4260
4261
[354]4262
4263
[108]4264 <td style="vertical-align: top;"><font color="#33ff33"><i>wvpt</i></font></td>
4265
4266
4267
[354]4268
4269
[108]4270            <td style="vertical-align: top;">Total vertical buoyancy
4271flux (w"vpt" + w*vpt*) (in K m/s).</td>
4272
4273
[354]4274
4275
[108]4276 </tr>
4277
4278
[354]4279
4280
[108]4281 <tr>
4282
4283
[354]4284
4285
[108]4286 <td style="vertical-align: top;"><font color="#33ff33"><i>w"q"</i></font></td>
4287
4288
4289
[354]4290
4291
[108]4292            <td style="vertical-align: top;">Subgrid-scale vertical
4293water flux (in kg/kg m/s).</td>
4294
4295
[354]4296
4297
[108]4298 </tr>
4299
4300
[354]4301
4302
[108]4303 <tr>
4304
4305
[354]4306
4307
[108]4308 <td style="vertical-align: top;"><font color="#33ff33"><i>w*q*</i></font></td>
4309
4310
4311
[354]4312
4313
[108]4314            <td style="vertical-align: top;">Resolved vertical water
4315flux (in kg/kg m/s).</td>
4316
4317
[354]4318
4319
[108]4320 </tr>
4321
4322
[354]4323
4324
[108]4325 <tr>
4326
4327
[354]4328
4329
[108]4330 <td style="vertical-align: top;"><font color="#33ff33"><i>wq</i></font></td>
4331
4332
4333
[354]4334
4335
[108]4336            <td style="vertical-align: top;">Total vertical water flux
4337(w"q" + w*q*) (in kg/kg m/s).</td>
4338
4339
[354]4340
4341
[108]4342 </tr>
4343
4344
[354]4345
4346
[108]4347 <tr>
4348
4349
[354]4350
4351
[108]4352 <td style="vertical-align: top;"><font color="#33ff33"><i>w"qv"</i></font></td>
4353
4354
4355
[354]4356
4357
[108]4358            <td style="vertical-align: top;">Subgrid-scale vertical
4359latent heat flux (in kg/kg m/s).</td>
4360
4361
[354]4362
4363
[108]4364 </tr>
4365
4366
[354]4367
4368
[108]4369 <tr>
4370
4371
[354]4372
4373
[108]4374 <td style="vertical-align: top;"><font color="#33ff33"><i>w*qv*</i></font></td>
4375
4376
4377
[354]4378
4379
[108]4380            <td style="vertical-align: top;">Resolved vertical latent
4381heat flux (in kg/kg m/s).</td>
4382
4383
[354]4384
4385
[108]4386 </tr>
4387
4388
[354]4389
4390
[108]4391 <tr>
4392
4393
[354]4394
4395
[108]4396 <td style="vertical-align: top;"><font color="#33ff33"><i>wqv</i></font></td>
4397
4398
4399
[354]4400
4401
[108]4402            <td style="vertical-align: top;">Total vertical latent
[48]4403heat
[108]4404flux (w"qv" + w*qv*) (in kg/kg m/s).</td>
4405
4406
[354]4407
4408
[108]4409 </tr>
4410
4411
[354]4412
4413
[108]4414 <tr>
4415
4416
4417
[354]4418
4419
[108]4420            <td style="vertical-align: middle;"><font color="#33ff33"><i>w"s"</i></font></td>
4421
4422
4423
[354]4424
4425
[108]4426            <td style="vertical-align: top;">Subgrid-scale vertical
[5]4427scalar concentration flux (in kg/m<sup>3 </sup>m/s).</td>
[108]4428
4429
4430
[354]4431
4432
[108]4433          </tr>
4434
4435
[354]4436
4437
[108]4438 <tr>
4439
4440
[354]4441
4442
[108]4443 <td style="vertical-align: middle;"><font color="#33ff33"><i>w*s*</i></font></td>
4444
4445
4446
[354]4447
4448
[108]4449            <td style="vertical-align: top;">Resolved vertical scalar
4450concentration flux (in kg/m<sup>3</sup> m/s).</td>
4451
4452
[354]4453
4454
[108]4455 </tr>
4456
4457
4458
[354]4459
4460
[108]4461          <tr>
4462
4463
[354]4464
4465
[108]4466 <td style="vertical-align: middle;"><font color="#33ff33"><i>ws</i></font></td>
4467
4468
4469
[354]4470
4471
[108]4472            <td style="vertical-align: top;">Total vertical scalar
[5]4473concentration flux (w"s" + w*s*) (in kg/m<sup>3 </sup>m/s).</td>
[108]4474
4475
4476
[354]4477
4478
[108]4479          </tr>
4480
4481
[354]4482
4483
[108]4484 <tr>
4485
4486
[354]4487
4488
[108]4489            <td align="undefined" valign="undefined"><span style="font-style: italic; color: rgb(51, 255, 51);">w"sa"</span></td>
4490
4491
[354]4492
4493
[108]4494            <td align="undefined" valign="undefined">Subgrid-scale vertical
4495salinity flux (in psu<sup> </sup>m/s).</td>
4496
4497
[354]4498
4499
[108]4500          </tr>
4501
4502
[354]4503
4504
[108]4505          <tr>
4506
4507
[354]4508
4509
[108]4510            <td align="undefined" valign="undefined"><span style="font-style: italic; color: rgb(51, 255, 51);">w*sa*</span></td>
4511
4512
[354]4513
4514
[108]4515            <td align="undefined" valign="undefined">Resolved vertical salinity flux (in psu m/s).</td>
4516
4517
[354]4518
4519
[108]4520          </tr>
4521
4522
[354]4523
4524
[108]4525          <tr>
4526
4527
[354]4528
4529
[108]4530            <td align="undefined" valign="undefined"><span style="font-style: italic; color: rgb(51, 255, 51);">wsa</span></td>
4531
4532
[354]4533
4534
[108]4535            <td align="undefined" valign="undefined">Total vertical salinity flux (w"sa" + w*sa*) (in psu<sup> </sup>m/s).</td>
4536
4537
[354]4538
4539
[108]4540          </tr>
4541
4542
[354]4543
4544
[108]4545          <tr>
4546
4547
[354]4548
4549
[108]4550 <td style="vertical-align: top;"><font color="#33ff33"><i>w*e*</i></font></td>
4551
4552
4553
[354]4554
4555
[108]4556            <td style="vertical-align: top;">Vertical flux of
4557perturbation energy (resolved)</td>
4558
4559
[354]4560
4561
[108]4562 </tr>
4563
4564
[354]4565
4566
[108]4567 <tr>
4568
4569
[354]4570
4571
[108]4572 <td style="vertical-align: top;"><font color="#ff6600"><i>u*2</i></font></td>
4573
4574
4575
[354]4576
4577
[108]4578            <td style="vertical-align: top;">Variance of the
[48]4579u-velocity
[108]4580component (resolved)</td>
4581
4582
[354]4583
4584
[108]4585 </tr>
4586
4587
[354]4588
4589
[108]4590 <tr>
4591
4592
[354]4593
4594
[108]4595 <td style="vertical-align: top;"><font color="#ff6600"><i>v*2</i></font></td>
4596
4597
4598
[354]4599
4600
[108]4601            <td style="vertical-align: top;">Variance of the
[48]4602v-velocity
[108]4603component (resolved)</td>
4604
4605
[354]4606
4607
[108]4608 </tr>
4609
4610
[354]4611
4612
[108]4613 <tr>
4614
4615
[354]4616
4617
[108]4618 <td style="vertical-align: top;"><font color="#33ff33"><i>w*2</i></font></td>
4619
4620
4621
[354]4622
4623
[127]4624            <td style="vertical-align: top;">Variance of the w-velocity
4625component (resolved)</td>
[108]4626
4627
[354]4628
4629
[108]4630 </tr>
4631
4632
[354]4633
4634
[108]4635 <tr>
4636
4637
[354]4638
4639
[108]4640 <td style="vertical-align: top;"><font color="#ff6600"><i>pt*2</i></font></td>
4641
4642
4643
[354]4644
4645
[108]4646            <td style="vertical-align: top;">Variance of the potential
4647temperature (resolved)</td>
4648
4649
[354]4650
4651
[108]4652 </tr>
4653
4654
[354]4655
4656
[108]4657 <tr>
4658
4659
[354]4660
4661
[108]4662 <td style="vertical-align: top;"><font color="#33ff33"><i>w*3</i></font></td>
4663
4664
4665
[354]4666
4667
[108]4668            <td style="vertical-align: top;">Third moment of the
4669w-velocity component (resolved)</td>
4670
4671
[354]4672
4673
[108]4674 </tr>
4675
4676
[354]4677
4678
[108]4679 <tr>
4680
4681
[354]4682
4683
[108]4684 <td style="vertical-align: middle;"><font color="#33ff33"><i>Sw</i></font></td>
4685
4686
4687
[354]4688
4689
[108]4690            <td style="vertical-align: top;">Skewness of the
[48]4691w-velocity
[5]4692component (resolved, S<sub>w</sub>
4693= W<sup>3</sup>/(w<sup>2</sup>)<sup>1.5</sup>)</td>
[108]4694
4695
4696
[354]4697
4698
[108]4699          </tr>
4700
4701
[354]4702
4703
[108]4704 <tr>
4705
4706
[354]4707
4708
[108]4709 <td style="vertical-align: top;"><font color="#33ff33"><i>w*2pt*</i></font></td>
4710
4711
4712
[354]4713
4714
[108]4715            <td style="vertical-align: top;">Third moment (resolved)</td>
4716
4717
4718
[354]4719
4720
[108]4721          </tr>
4722
4723
[354]4724
4725
[108]4726 <tr>
4727
4728
[354]4729
4730
[108]4731 <td style="vertical-align: top;"><font color="#33ff33"><i>w*pt*2</i></font></td>
4732
4733
4734
[354]4735
4736
[108]4737            <td style="vertical-align: top;">Third moment (resolved)</td>
4738
4739
4740
[354]4741
4742
[108]4743          </tr>
4744
4745
[354]4746
4747
[108]4748 <tr>
4749
4750
[354]4751
4752
[524]4753 <td style="vertical-align: top;"><font color="#ff6666"><i>w*u*u*:dz</i></font></td>
[108]4754
4755
4756
[354]4757
4758
[108]4759            <td style="vertical-align: top;">Energy production by
[48]4760shear
[108]4761(resolved)</td>
4762
4763
[354]4764
4765
[108]4766 </tr>
4767
4768
[354]4769
4770
[108]4771 <tr>
4772
4773
[354]4774
4775
[524]4776 <td style="vertical-align: top;"><font color="#ff6666"><i>w*p*:dz</i></font></td>
[108]4777
4778
4779
[354]4780
4781
[108]4782            <td style="vertical-align: top;">Energy production by
[5]4783turbulent transport of pressure
[108]4784fluctuations (resolved)</td>
4785
4786
[354]4787
4788
[108]4789 </tr>
4790
4791
[354]4792
4793
[108]4794 <tr>
4795
4796
[354]4797
4798
[524]4799 <td style="vertical-align: top;"><font color="#ff6666"><i>w"e:dz</i></font></td>
[108]4800
4801
4802
[354]4803
4804
[108]4805            <td style="vertical-align: top;">Energy production by
4806transport of resolved-scale TKE</td>
4807
4808
[354]4809
4810
[531]4811 </tr><tr>
4812            <td style="vertical-align: top;"><font color="#ff6666"><i>hyp</i></font></td>
4813            <td style="vertical-align: top;">Hydrostatic pressure (in dbar)<br>
4814            </td>
4815          </tr>
[108]4816
4817
[354]4818
4819
[531]4820
[108]4821 
4822       
4823       
[354]4824       
4825       
[108]4826        </tbody>
4827     
4828     
[354]4829     
4830     
[108]4831      </table>
4832
4833
[354]4834
4835
[108]4836 <br>
4837
4838
[354]4839
4840
[108]4841Beyond that, initial profiles (t=0) of some
4842variables can additionally be
[5]4843output (this output is only done once
4844with the first plot output and not repeated with the profile output at
4845later
4846times). The names of these profiles result from the ones specified
[108]4847above leaded by a hash "#".&nbsp; Allowed values are:<br>
4848
4849
[354]4850
4851
[108]4852 
4853     
4854     
[354]4855     
4856     
[108]4857      <ul>
4858
4859
4860
[354]4861
4862
[108]4863       
4864       
[354]4865       
4866       
[108]4867        <p><i>#u</i>, <i>#v</i>, <i>#pt</i>,
4868        <i>#km</i>, <i>#kh</i>, <i>#l, #lpt, #q, #qv, #s, #sa, #vpt</i></p>
4869
4870
4871
[354]4872
4873
[108]4874     
4875     
[354]4876     
4877     
[108]4878      </ul>
4879
4880
[354]4881
4882
[108]4883 
4884     
4885     
[354]4886     
4887     
[108]4888      <p>Profile names preceded by a hash automatically imply that
4889profiles for these variables are also output at later times. It is not
4890necessary and not allowed to specify the same profile name with and
4891without hash simultaneously(this would lead to an NetCDF error). </p>
[354]4892
4893
4894     
4895     
[108]4896      <p>These initial profiles have been either set by
[48]4897the user or
[108]4898have been calculated by a 1d-model prerun.</p>
4899
4900
[354]4901
4902
[108]4903The
[89]4904user is allowed to extend the above list of quantities by defining his
[108]4905own output quantities (see the user-parameter <a href="chapter_4.3.html#data_output_pr_user">data_output_pr_user</a>).<br>
4906
4907
[354]4908
4909
[108]4910      <br>
4911
4912
[354]4913
4914
[108]4915In case
[48]4916of ASCII data output to local file PLOT1D_DATA,
[5]4917PALM additionally creates a NAMELIST parameter file (local name <a href="chapter_3.4.html#PLOT1D_PAR">PLOT1D_PAR</a>)
4918which can be used as parameter input file for the plot software <a href="http://www.muk.uni-hannover.de/institut/software/profil_intro.html">profil</a>.
4919Profiles can be directly plotted with <span style="font-weight: bold;">profil</span>
4920using these two files. The
4921plot layout is
[48]4922steered via the parameter input file. The values of these <span style="font-weight: bold;">profil</span>-parameters
4923are determined by
[5]4924a set of PALM parameters (<a href="chapter_4.2.html#profile_columns">profile_columns</a>,
[108]4925      <a href="chapter_4.2.html#profile_rows">profile_rows</a>,
4926      <a href="chapter_4.2.html#z_max_do1d">z_max_do1d</a>,
4927      <a href="chapter_4.2.html#cross_profiles">cross_profiles</a>,
[5]4928etc.) All parameter values can be changed by editing the parameter
4929input
[108]4930file. <br>
4931
4932
[354]4933
4934
[108]4935      <br>
4936
4937
[354]4938
4939
[108]4940Further details about plotting vertical
[48]4941profiles with <span style="font-weight: bold;">profil </span>can
4942be found in <a href="chapter_4.5.2.html">chapter
[108]49434.5.2</a></td>
4944
4945
[354]4946
4947
[108]4948 </tr>
4949
4950
[354]4951
4952
[108]4953 <tr>
4954
4955
[354]4956
4957
[108]4958 <td style="vertical-align: top;"> 
4959     
4960     
[354]4961     
4962     
[108]4963      <p><a name="data_output_2d_on_each_pe"></a><b>data_output_2d_on</b>
4964      <br>
4965
4966
[354]4967
4968
[108]4969 <b>_each_pe</b></p>
4970
4971
[354]4972
4973
[108]4974 </td>
4975
4976
[354]4977
4978
[108]4979 <td style="vertical-align: top;">L<br>
4980
4981
[354]4982
4983
[108]4984 </td>
4985
4986
[354]4987
4988
[108]4989 <td style="vertical-align: top;"><span style="font-style: italic;">.T.</span><br>
4990
4991
[354]4992
4993
[108]4994 </td>
4995
4996
4997
[354]4998
4999
[108]5000      <td style="vertical-align: top;">Output 2d cross section
[48]5001data by one or
[108]5002all processors.&nbsp; 
5003     
5004     
[354]5005     
5006     
[108]5007      <p>In runs with several processors, by
[48]5008default, each processor
5009outputs cross section data of its subdomain&nbsp;into an individual
5010file. After PALM
5011has finished, the contents of these files have to be sampled into one
5012file<span style="font-weight: bold;"></span> using
[5]5013the program <tt>combine_plot_fields.x</tt>.&nbsp; </p>
[108]5014
5015
5016
[354]5017
5018
[108]5019     
5020     
[354]5021     
5022     
[108]5023      <p>Alternatively, by assigning <b>data_output_2d_on_each_pe</b>
[48]5024= <i>.F.,</i>
[5]5025the respective data is gathered on PE0 and output is done directly
[48]5026into one file, so <tt>combine_plot_fields.x</tt> does not
5027have to be
5028called. However, in case of very large numbers of horizontal
5029gridpoints, sufficient
[108]5030memory is required on PE0. </p>
5031
5032
[354]5033
5034
[108]5035 </td>
5036
5037
[354]5038
5039
[108]5040 </tr>
5041
5042
5043
[354]5044
5045
[108]5046    <tr>
5047
5048
[354]5049
5050
[108]5051 <td style="vertical-align: top;"> 
5052     
5053     
[354]5054     
5055     
[108]5056      <p><a name="disturbance_amplitude"></a><b>disturbance<br>
5057
5058
5059
[354]5060
5061
[108]5062_amplitude</b></p>
5063
5064
[354]5065
5066
[108]5067 </td>
5068
5069
[354]5070
5071
[108]5072 <td style="vertical-align: top;">R</td>
5073
5074
[354]5075
5076
[108]5077 <td style="vertical-align: top;"><i>0.25</i></td>
5078
5079
5080
[354]5081
5082
[108]5083      <td style="vertical-align: top;"> 
5084     
5085     
[354]5086     
5087     
[108]5088      <p>Maximum
[48]5089perturbation amplitude of the random perturbations
[5]5090imposed to the horizontal velocity field (in m/s).&nbsp; </p>
[108]5091
5092
5093
[354]5094
5095
[108]5096     
5097     
[354]5098     
5099     
[108]5100      <p>The parameter <a href="#create_disturbances">create_disturbances</a>
[5]5101describes how to impose random perturbations to the horizontal velocity
5102field. Since the perturbation procedure includes two filter operations,
[48]5103the amplitude assigned by <b>disturbance_amplitude</b> is
5104only an
[108]5105approximate value of the real magnitude of the perturbation.</p>
5106
5107
[354]5108
5109
[108]5110 </td>
5111
5112
5113
[354]5114
5115
[108]5116    </tr>
5117
5118
[354]5119
5120
[108]5121 <tr>
5122
5123
[354]5124
5125
[108]5126 <td style="vertical-align: top;">
5127     
5128     
[354]5129     
5130     
[108]5131      <p><a name="disturbance_energy_limit"></a><b>disturbance_energy</b>
5132      <br>
5133
5134
[354]5135
5136
[108]5137 <b>_limit</b></p>
5138
5139
[354]5140
5141
[108]5142 </td>
5143
5144
[354]5145
5146
[108]5147 <td style="vertical-align: top;">R</td>
5148
5149
[354]5150
5151
[108]5152 <td style="vertical-align: top;"><i>0.01</i></td>
5153
5154
5155
[354]5156
5157
[240]5158      <td style="vertical-align: top; font-family: Helvetica,Arial,sans-serif;"> 
[108]5159     
5160     
[354]5161     
5162     
[108]5163      <p lang="en-GB">Upper
[48]5164limit value of the perturbation energy of
[5]5165the velocity field used as a criterion for imposing random
[48]5166perturbations (in m<sup>2</sup>/s<sup>2</sup>).&nbsp;
[108]5167      </p>
5168
5169
[354]5170
5171
[108]5172 
5173     
5174     
[354]5175     
5176     
[240]5177      <p><span lang="en-GB">The parameter </span><a href="#create_disturbances"><span lang="en-GB">create_disturbances</span></a><span lang="en-GB">
[48]5178describes how to impose
[5]5179random perturbations to the horizontal velocity field. The perturbation
5180energy is defined as the volume average (over the total model domain)
5181of the squares of the deviations of the velocity components from the
5182mean flow (horizontal average). If the perturbation energy exceeds the
5183assigned value, random perturbations to the fields of horizontal
5184velocities are imposed no more. The value of this parameter usually
5185must be determined by trial and error (it depends e.g. on the total
[240]5186number of grid points).</span>  </p>
[108]5187
5188
[354]5189
5190
[108]5191 </td>
5192
5193
5194
[354]5195
5196
[108]5197    </tr>
5198
5199
[354]5200
5201
[108]5202 <tr>
5203
5204
[354]5205
5206
[108]5207 <td style="vertical-align: top;">
5208     
5209     
[354]5210     
5211     
[108]5212      <p><a name="disturbance_level_b"></a><b>disturbance_level_b</b></p>
5213
5214
5215
[354]5216
5217
[108]5218      </td>
5219
5220
[354]5221
5222
[108]5223 <td style="vertical-align: top;">R</td>
5224
5225
5226
[354]5227
5228
[108]5229      <td style="vertical-align: top;"><i>zu(3) or<br>
5230
5231
[354]5232
5233
[108]5234zu(nz*2/3)<br>
5235
5236
[354]5237
5238
[108]5239see right</i></td>
5240
5241
5242
[354]5243
5244
[240]5245      <td style="vertical-align: top; font-family: Helvetica,Arial,sans-serif;"> 
[108]5246     
5247     
[354]5248     
5249     
[240]5250      <p lang="en-GB"><font size="3">Lower
[5]5251limit of the vertical range for which random perturbations are to be
[240]5252imposed on the horizontal wind field (</font>in <font size="3">m).&nbsp;
5253      </font> </p>
[108]5254
5255
[354]5256
5257
[108]5258 
5259     
5260     
[354]5261     
5262     
[240]5263      <p><span lang="en-GB">This
[97]5264parameter must hold the condition zu(3) &lt;= <b>disturbance_level_b</b>
[240]5265&lt;= zu(</span><a href="chapter_4.1.html#nz"><span lang="en-GB">nz-2</span></a><span lang="en-GB">)</span><span lang="en-GB">. Additionally, <b>disturbance_level_b</b>
5266&lt;= </span><a href="#disturbance_level_t"><span lang="en-GB">disturbance_level_t</span></a>
5267      <span lang="en-GB">must
5268also hold.</span></p>
[108]5269
5270
[354]5271
5272
[108]5273     
5274     
[354]5275     
5276     
[240]5277      <p><span lang="en-GB">In case of ocean runs (see <a href="chapter_4.1.html#ocean">ocean</a>) </span><span lang="en-GB">the default value is <span style="font-weight: bold;">disturbance_level_b</span> = <span style="font-style: italic;">zu(nz * 2 / 3) </span>(negative).</span><a href="chapter_4.1.html#nz"><span lang="en-GB"></span></a><span lang="en-GB"></span><span lang="en-GB"></span></p>
[108]5278
5279
[354]5280
5281
[108]5282 
5283     
5284     
[354]5285     
5286     
[240]5287      <p><span lang="en-GB">The
5288parameter </span><a href="#create_disturbances"><span lang="en-GB">create_disturbances</span></a><span lang="en-GB">
[48]5289describes how to impose
[240]5290random perturbations to the horizontal velocity field</span><span lang="en-GB">.</span>
5291       </p>
[108]5292
5293
[354]5294
5295
[108]5296 </td>
5297
5298
[354]5299
5300
[108]5301 </tr>
5302
5303
[354]5304
5305
[108]5306 <tr>
5307
5308
[354]5309
5310
[108]5311 <td style="vertical-align: top;"> 
5312     
5313     
[354]5314     
5315     
[108]5316      <p><a name="disturbance_level_t"></a><b>disturbance_level_t</b></p>
5317
5318
5319
[354]5320
5321
[108]5322      </td>
5323
5324
[354]5325
5326
[108]5327 <td style="vertical-align: top;">R</td>
5328
5329
5330
[354]5331
5332
[108]5333      <td style="vertical-align: top;"><i>zu(nz/3) or<br>
5334
5335
[354]5336
5337
[108]5338zu(nzt-3)<br>
5339
5340
[354]5341
5342
[108]5343see right</i></td>
5344
5345
5346
[354]5347
5348
[240]5349      <td style="vertical-align: top; font-family: Helvetica,Arial,sans-serif;"> 
[108]5350     
5351     
[354]5352     
5353     
[240]5354      <p lang="en-GB"><font size="3">Upper
[5]5355limit of the vertical range for which random perturbations are to be
[240]5356imposed on the horizontal wind field (</font>in <font size="3">m).&nbsp;
5357      </font> </p>
[108]5358
5359
[354]5360
5361
[108]5362 
5363     
5364     
[354]5365     
5366     
[240]5367      <p><span lang="en-GB">This
[48]5368parameter must hold the condition <b>disturbance_level_t</b>
[240]5369&lt;= zu<i>(</i></span><i><a href="chapter_4.1.html#nz"><span lang="en-GB">nz-2</span></a><span lang="en-GB">)</span></i><span lang="en-GB">.
5370Additionally, </span><a href="#disturbance_level_b"><span lang="en-GB">disturbance_level_b</span></a>
5371      <span lang="en-GB">&lt;=
[108]5372      <b>disturbance_level_t</b>
[240]5373must also hold.</span></p>
[108]5374
5375
[354]5376
5377
[240]5378      <span lang="en-GB">In case of ocean runs (see <a href="chapter_4.1.html#ocean">ocean</a>) </span><span lang="en-GB">the default value is <span style="font-weight: bold;">disturbance_level_t</span> = <span style="font-style: italic;">zu(nzt - 3</span>)</span><span lang="en-GB"><span style="font-style: italic;"> </span>(negative)</span><span lang="en-GB">.</span>
[108]5379     
5380     
[354]5381     
5382     
[240]5383      <p><span lang="en-GB">The
5384parameter </span><a href="#create_disturbances"><span lang="en-GB">create_disturbances</span></a><span lang="en-GB">
[48]5385describes how to impose
[240]5386random perturbations to the horizontal velocity field</span><span lang="en-GB">.</span>
5387       </p>
[108]5388
5389
[354]5390
5391
[108]5392 </td>
5393
5394
[354]5395
5396
[108]5397 </tr>
5398
5399
[354]5400
5401
[108]5402 <tr>
5403
5404
[354]5405
5406
[108]5407 <td style="vertical-align: top;"> 
5408     
5409     
[354]5410     
5411     
[108]5412      <p><a name="do2d_at_begin"></a><b>do2d_at_begin</b></p>
5413
5414
5415
[354]5416
5417
[108]5418      </td>
5419
5420
[354]5421
5422
[108]5423 <td style="vertical-align: top;">L<br>
5424
5425
[354]5426
5427
[108]5428 </td>
5429
5430
5431
[354]5432
5433
[240]5434      <td style="vertical-align: top; font-style: italic;">.F.<br>
[108]5435
5436
[354]5437
5438
[108]5439 </td>
5440
5441
5442
[354]5443
5444
[108]5445      <td style="vertical-align: top;"> 
5446     
5447     
[354]5448     
5449     
[108]5450      <p>Output of 2d
5451cross section data at the beginning of a run.&nbsp; </p>
5452
5453
[354]5454
5455
[108]5456 
5457     
5458     
[354]5459     
5460     
[108]5461      <p>The
[48]5462temporal intervals of output times of 2d cross section data (see <a href="chapter_4.2.html#data_output">data_output</a>)
5463are usually determined with parameters <a href="chapter_4.2.html#dt_do2d_xy">dt_do2d_xy</a>, <a href="chapter_4.2.html#dt_do2d_xz">dt_do2d_xz</a>
[5]5464and <a href="chapter_4.2.html#dt_do2d_yz">dt_do2d_yz</a>.
[48]5465By assigning <b>do2d_at_begin</b> = <i>.T.</i>
5466an additional output
[5]5467will be made at the
5468beginning of a run (thus at the time t = 0 or at the respective
[108]5469starting times of restart runs).</p>
5470
5471
[354]5472
5473
[108]5474 </td>
5475
5476
[354]5477
5478
[108]5479 </tr>
5480
5481
[354]5482
5483
[108]5484 <tr>
5485
5486
5487
[354]5488
5489
[108]5490      <td style="vertical-align: top;"> 
5491     
5492     
[354]5493     
5494     
[108]5495      <p><a name="do3d_at_begin"></a><b>do3d_at_begin</b></p>
5496
5497
5498
[354]5499
5500
[108]5501      </td>
5502
5503
[354]5504
5505
[108]5506 <td style="vertical-align: top;">L<br>
5507
5508
[354]5509
5510
[108]5511 </td>
5512
5513
5514
[354]5515
5516
[240]5517      <td style="vertical-align: top; font-style: italic;">.F.<br>
[108]5518
5519
[354]5520
5521
[108]5522 </td>
5523
5524
5525
[354]5526
5527
[108]5528      <td style="vertical-align: top;">Output of 3d volume data
[48]5529at the beginning
[108]5530of a run.<br>
5531
5532
[354]5533
5534
[108]5535      <br>
5536
5537
[354]5538
5539
[108]5540The temporal intervals of output times of
[48]55413d volume data (see <a href="chapter_4.2.html#data_output">data_output</a>)
[5]5542is usually determined with parameter <a href="chapter_4.2.html#dt_do3d">dt_do3d</a>.
[48]5543By assigning <b>do3d_at_begin</b> = <i>.T.</i>
5544an additional output
[5]5545will be made at the
5546beginning of a run (thus at the time t = 0 or at the respective
[108]5547starting times of restart runs).</td>
5548
5549
[354]5550
5551
[108]5552 </tr>
5553
5554
[354]5555
5556
[108]5557 <tr>
5558
5559
[354]5560
5561
[108]5562 <td style="vertical-align: top;"> 
5563     
5564     
[354]5565     
5566     
[108]5567      <p><a name="do3d_compress"></a><b>do3d_compress</b></p>
5568
5569
5570
[354]5571
5572
[108]5573      </td>
5574
5575
[354]5576
5577
[108]5578 <td style="vertical-align: top;">L<br>
5579
5580
[354]5581
5582
[108]5583 </td>
5584
5585
5586
[354]5587
5588
[240]5589      <td style="vertical-align: top; font-style: italic;">.F.<br>
[108]5590
5591
[354]5592
5593
[108]5594 </td>
5595
5596
5597
[354]5598
5599
[108]5600      <td style="vertical-align: top;"> 
5601     
5602     
[354]5603     
5604     
[108]5605      <p>Output of data
5606for 3d plots in compressed form.&nbsp; </p>
5607
5608
[354]5609
5610
[108]5611 
5612     
5613     
[354]5614     
5615     
[108]5616      <p>This
[48]5617parameter only applies for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
[108]5618= <span style="font-style: italic;">'avs'</span>.</p>
5619
5620
[354]5621
5622
[108]5623     
5624     
[354]5625     
5626     
[108]5627      <p>Output
[48]5628of 3d volume data may need huge amounts of disc storage
[5]5629(up to several Terabytes ore more). Data compression can serve to
5630reduce this requirement. PALM is able to output 3d data in compressed
5631form using 32-bit integers, if <span style="font-weight: bold;">do3d_compress</span>
[48]5632= <span style="font-style: italic;">.T.</span> is
5633assigned. This
[5]5634yields a loss of accuracy, but the file size is clearly reduced. The
[197]5635parameter <a href="chapter_4.2.html#do3d_comp_prec">do3d_comp_prec</a>
[5]5636can be used to separately define the number of significant digits for
[108]5637each quantity.<br>
5638
5639
[354]5640
5641
[108]5642 </p>
5643
5644
[354]5645
5646
[108]5647 
5648     
5649     
[354]5650     
5651     
[108]5652      <p>So far compressed data
[48]5653output is only possible for Cray-T3E
[5]5654machines. Additional information for
5655handling compressed data is given in <a href="chapter_4.5.6.html">chapter
[108]56564.5.6</a>.</p>
5657
5658
[354]5659
5660
[108]5661 </td>
5662
5663
[354]5664
5665
[108]5666 </tr>
5667
5668
[354]5669
5670
[108]5671 <tr>
5672
5673
[354]5674
5675
[108]5676 <td style="vertical-align: top;"> 
5677     
5678     
[354]5679     
5680     
[197]5681      <p><a name="do3d_comp_prec"></a><b>do3d_comp_prec</b></p>
[108]5682
5683
5684
[354]5685
5686
[108]5687      </td>
5688
5689
[354]5690
5691
[108]5692 <td style="vertical-align: top;">C *
[48]56937&nbsp; <br>
[108]5694
5695
5696
[354]5697
5698
[108]5699&nbsp; (100)</td>
5700
5701
[354]5702
5703
[240]5704 <td style="vertical-align: top; font-style: italic;">see
[108]5705right<br>
5706
5707
[354]5708
5709
[108]5710 </td>
5711
5712
[354]5713
5714
[108]5715 <td style="vertical-align: top;">
5716     
5717     
[354]5718     
5719     
[108]5720      <p>Significant digits in case of compressed data
5721output.&nbsp; </p>
5722
5723
[354]5724
5725
[108]5726 
5727     
5728     
[354]5729     
5730     
[108]5731      <p>This parameter only applies for
[48]5732&nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
[108]5733= <span style="font-style: italic;">'avs'</span>.</p>
5734
5735
[354]5736
5737
[108]5738     
5739     
[354]5740     
5741     
[108]5742      <p>In
[48]5743case that data compression is used for output of 3d data
[5]5744(see <a href="chapter_4.2.html#do3d_compress">do3d_compress</a>),
5745this parameter determines the number of significant digits
[108]5746which are to be output.<br>
5747
5748
[354]5749
5750
[108]5751 </p>
5752
5753
[354]5754
5755
[108]5756 
5757     
5758     
[354]5759     
5760     
[108]5761      <p>Fewer digits
[48]5762clearly reduce the amount
[5]5763of data. Assignments have to be given separately for each individual
[48]5764quantity via a character string of the form <span style="font-style: italic;">'&lt;quantity
5765name&gt;&lt;number of
[5]5766significant digits&gt;'</span>, e.g. <span style="font-style: italic;">'pt2'</span>.
5767Only those quantities listed in <a href="chapter_4.2.html#data_output">data_output</a>
5768are admitted. Up to 9 significant digits are allowed (but large values
5769are not very reasonable
[108]5770because they do not effect a significant compression).<br>
5771
5772
[354]5773
5774
[108]5775 </p>
5776
5777
5778
[354]5779
5780
[108]5781     
5782     
[354]5783     
5784     
[197]5785      <p>The default assignment is <span style="font-weight: bold;">do3d_comp_prec</span>
[108]5786= <span style="font-style: italic;">'u2'</span>, <span style="font-style: italic;">'v2'</span>, <span style="font-style: italic;">'w2'</span>, <span style="font-style: italic;">'p5'</span>, <span style="font-style: italic;">'pt2'</span>.</p>
5787
5788
[354]5789
5790
[108]5791 </td>
5792
5793
5794
[354]5795
5796
[108]5797    </tr>
5798
5799
[354]5800
5801
[240]5802 <tr>
[108]5803
5804
[354]5805
5806
[108]5807 <td style="vertical-align: top;"> 
5808     
5809     
[354]5810     
5811     
[108]5812      <p><a name="dt_laufparameter"></a><b>dt</b></p>
5813
5814
5815
[354]5816
5817
[108]5818      </td>
5819
5820
[354]5821
5822
[108]5823 <td style="vertical-align: top;">R</td>
5824
5825
5826
[354]5827
5828
[108]5829      <td style="vertical-align: top;"><i>variable</i></td>
5830
5831
5832
[354]5833
5834
[108]5835      <td style="vertical-align: top;"> 
5836     
5837     
[240]5838      <font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><font size="3">Time
5839step to be used by the 3d-model (</font></font><span style="font-family: Helvetica,Arial,sans-serif;">in </span><font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><font size="3">s).&nbsp;
5840      </font></font> 
[108]5841
5842
5843 
5844     
5845     
[354]5846     
5847     
[240]5848      <p style="font-family: Helvetica,Arial,sans-serif;"><span lang="en-GB">This parameter</span>
5849      <span lang="en-GB">is
[48]5850described in
[240]5851detail with the initialization parameters (see</span><span lang="en-GB"> </span><a href="chapter_4.1.html#dt"><span lang="en-GB">dt</span></a><span lang="en-GB">).
[48]5852Additionally, it may be
[5]5853used as a run parameter and then applies to all restart runs (until it
5854is changed again). A switch from a constant time step to a variable
[354]5855time step can be achieved with <b>dt</b> = <i>-1.0</i>.</span></p>
5856
5857      <font face="Thorndale, serif">
[240]5858      </font> 
[108]5859
5860
5861 </td>
5862
5863
[354]5864
5865
[108]5866 </tr>
5867
5868
[354]5869
5870
[108]5871 <tr>
5872
5873
[354]5874
5875
[108]5876 <td style="vertical-align: top;"><a name="dt_averaging_input"></a><span style="font-weight: bold;">dt_averaging_input</span><br>
5877
5878
5879
[354]5880
5881
[108]5882      </td>
5883
5884
[354]5885
5886
[108]5887 <td style="vertical-align: top;">R<br>
5888
5889
[354]5890
5891
[108]5892 </td>
5893
5894
5895
[354]5896
5897
[108]5898      <td style="vertical-align: top;"><span style="font-style: italic;">0.0</span><br>
5899
5900
[354]5901
5902
[108]5903 </td>
5904
5905
5906
[354]5907
5908
[108]5909      <td style="vertical-align: top;">Temporal interval
5910of&nbsp;data which are subject to temporal averaging (in s).<br>
5911
5912
[354]5913
5914
[108]5915      <br>
5916
5917
[354]5918
5919
[108]5920By
[48]5921default, data from each timestep within the interval defined by <a href="chapter_4.2.html#averaging_interval">averaging_interval</a>
5922are used for calculating the temporal average. By choosing <span style="font-weight: bold;">dt_averaging_input</span>
5923&gt; <span lang="en-GB"><font face="Thorndale, serif"> </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale, serif">dt</font></span></a><font face="Thorndale, serif"><span lang="en-GB"></span></font><span lang="en-GB"></span><span style="font-style: italic;"></span>,
[5]5924the number of time levels entering the average can be minimized. This
5925reduces the CPU-time of a run but may worsen the quality of the
[108]5926average's statistics.<br>
5927
5928
[354]5929
5930
[240]5931      <br style="font-family: Helvetica,Arial,sans-serif;">
[108]5932
5933
[354]5934
5935
[240]5936      <font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><span lang="en-GB">With
[48]5937variable time step (see <span style="font-weight: bold;">dt</span>),
5938the number of time levels entering the average can vary from one
[240]5939averaging interval to the next (for a more detailed explanation see </span></font><font style="font-family: Helvetica,Arial,sans-serif;"><a href="#averaging_interval"><span lang="en-GB">averaging_interval</span></a>)</font><font style="font-family: Helvetica,Arial,sans-serif;" face="Thorndale, serif"><span lang="en-GB">. It
[48]5940is approximately given by the quotient of <span style="font-weight: bold;">averaging_interval</span> /
5941MAX(<span style="font-weight: bold;"> dt_averaging_input</span>,
[108]5942      <span style="font-weight: bold;">dt</span>) (which
[48]5943gives a more or less exact value if a fixed timestep is used and if
[240]5944this is an integral divisor of <span style="font-weight: bold;">dt_averaging_input</span>).</span></font><span style="font-family: Helvetica,Arial,sans-serif;">&nbsp;
5945      </span><br style="font-family: Helvetica,Arial,sans-serif;">
[108]5946
5947
[354]5948
5949
[108]5950      <br>
5951
5952
[354]5953
5954
[108]5955      <span style="font-weight: bold;">Example:</span><br>
5956
5957
[354]5958
5959
[108]5960With
[48]5961an averaging interval of 100.0 s and <span style="font-weight: bold;">dt_averaging_input</span> =
[108]5962      <span style="font-style: italic;">10.0</span>,
[5]5963the time levels entering the average have a (minimum) distance of 10.0
5964s (their distance may of course be larger if the current timestep is
5965larger than 10.0 s), so the average is calculated from the data of
[108]5966(maximum) 10 time levels.<br>
5967
5968
[354]5969
5970
[108]5971      <br>
5972
5973
[354]5974
5975
[108]5976      <font face="Thorndale, serif"><span lang="en-GB">It
[48]5977is allowed
5978to change <b>dt_averaging_input</b> during a job chain. If
5979the last averaging
[5]5980interval of the run previous to the change could not be completed (i.e.
5981has to be finished in the current run), the individual profiles and/or
5982spectra entering the averaging are not uniformly distributed over the
[108]5983averaging interval.<br>
5984
5985
[354]5986
5987
[108]5988      <br>
5989
5990
[354]5991
5992
[108]5993      </span></font>Parameter&nbsp;<a href="#dt_averaging_input_pr">dt_averaging_input_pr</a>&nbsp;can
[48]5994be used to define&nbsp;a different temporal interval&nbsp;for
[108]5995vertical profile data and spectra.<br>
5996
5997
[354]5998
5999
[108]6000 </td>
6001
6002
[354]6003
6004
[108]6005 </tr>
6006
6007
6008
[354]6009
6010
[108]6011    <tr>
6012
6013
[354]6014
6015
[108]6016 <td style="vertical-align: top;"> 
6017     
6018     
[354]6019     
6020     
[108]6021      <p><a name="dt_averaging_input_pr"></a><b>dt_averaging_input_pr</b></p>
6022
6023
6024
[354]6025
6026
[108]6027      </td>
6028
6029
[354]6030
6031
[108]6032 <td style="vertical-align: top;">R</td>
6033
6034
6035
[354]6036
6037
[108]6038      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="#dt_averaging_input">dt_<br>
6039
6040
[354]6041
6042
[108]6043averaging_<br>
6044
6045
[354]6046
6047
[108]6048input</a></span></td>
6049
6050
6051
[354]6052
6053
[108]6054      <td style="vertical-align: top;"> 
6055     
6056     
[354]6057     
6058     
[108]6059      <p lang="en-GB">Temporal
[48]6060interval of&nbsp;data which are subject to temporal averaging of <font face="Thorndale, serif"><font size="3">vertical
6061profiles and/or spectra&nbsp;(</font></font>in <font face="Thorndale, serif"><font size="3">s).&nbsp;
[108]6062      </font></font> </p>
6063
6064
[354]6065
6066
[108]6067 
6068     
6069     
[354]6070     
6071     
[108]6072      <p>By default, data from
[48]6073each timestep within the interval defined by<font face="Thorndale, serif"><span lang="en-GB"> </span></font><a href="#averaging_interval_pr"><span lang="en-GB"><font face="Thorndale, serif">averaging_interval_pr</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><span lang="en-GB"><font face="Thorndale, serif">and </font></span><a href="#averaging_interval_sp"><span lang="en-GB"><font face="Thorndale, serif">averaging_interval_sp</font></span></a><span lang="en-GB"><font face="Thorndale, serif"> </font></span>are
6074used for calculating the temporal average.&nbsp;By choosing <span style="font-weight: bold;">dt_averaging_input_pr</span>
6075&gt; <span lang="en-GB"><font face="Thorndale, serif"> </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale, serif">dt</font></span></a><font face="Thorndale, serif"><span lang="en-GB"></span></font><span lang="en-GB"></span><span style="font-style: italic;"></span>,
[5]6076the number of time levels entering the average can be minimized. This
6077reduces the CPU-time of a run but may worsen the quality of the
[108]6078average's statistics. <span lang="en-GB"><font face="Thorndale, serif"><span style="font-weight: bold;"></span><span style="font-weight: bold;"></span></font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"></span></a><font face="Thorndale, serif"><span lang="en-GB"></span></font><span lang="en-GB"></span><br>
6079
6080
[354]6081
6082
[108]6083 </p>
6084
6085
[354]6086
6087
[108]6088     
6089     
[354]6090     
6091     
[108]6092      <p>For
6093more explanations see parameter <a href="#dt_averaging_input">dt_averaging_input</a>.<a href="chapter_4.1.html#dt"><span lang="en-GB"></span></a><font face="Thorndale, serif"><span lang="en-GB"></span></font></p>
6094
6095
[354]6096
6097
[108]6098      </td>
6099
6100
6101
[354]6102
6103
[108]6104    </tr>
6105
6106
[354]6107
6108
[108]6109 <tr>
6110
6111
[354]6112
6113
[108]6114      <td style="vertical-align: top;"><a name="dt_coupling"></a><span style="font-weight: bold;">dt_coupling</span></td>
6115
6116
[354]6117
6118
[108]6119      <td style="vertical-align: top;">R</td>
6120
6121
[354]6122
6123
[108]6124      <td style="vertical-align: top;"><span style="font-style: italic;">9999999.9</span></td>
6125
6126
[354]6127
6128
[108]6129      <td style="vertical-align: top;">Temporal interval for the data exchange in case of <a href="chapter_3.8.html">runs with coupled models</a> (e.g. atmosphere - ocean) (in s).<br>
6130
6131
[354]6132
6133
[108]6134      <br>
6135
6136
[354]6137
6138
[108]6139This parameter has an effect only in case of a run with coupled models. It is available starting from version 3.3a. <br>
6140
6141
[354]6142
6143
[108]6144      <br>
6145
6146
[354]6147
6148
[108]6149This parameter specifies the temporal interval at which data are
6150exchanged at the interface between coupled models (currently: interface
6151between atmosphere and ocean). If this parameter is not explicitly
6152specified in the parameter files for both coupled models, or if there
6153is an inconsistency between its values for both coupled models,
6154the&nbsp;execution will terminate and an informative error message will
6155be given.&nbsp;In order to ensure synchronous coupling throughout the simulation, <span style="font-weight: bold;">dt_coupling</span> should be chosen larger than
6156      <a href="#dt_max">dt_max</a>.</td>
6157
6158
[354]6159
6160
[108]6161    </tr>
6162
6163
[354]6164
6165
[108]6166    <tr>
6167
6168
[354]6169
6170
[108]6171 <td style="vertical-align: top;"><a name="dt_data_output"></a><span style="font-weight: bold;">dt_data_output</span><br>
6172
6173
6174
[354]6175
6176
[108]6177      </td>
6178
6179
[354]6180
6181
[108]6182 <td style="vertical-align: top;">R<br>
6183
6184
[354]6185
6186
[108]6187 </td>
6188
6189
6190
[354]6191
6192
[108]6193      <td style="vertical-align: top;"><span style="font-style: italic;">9999999.9</span><br>
6194
6195
6196
[354]6197
6198
[108]6199      </td>
6200
6201
[354]6202
6203
[108]6204 <td style="vertical-align: top;">
6205     
6206     
[354]6207     
6208     
[108]6209      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal interval</font>
[48]6210at which&nbsp;data (3d volume data (instantaneous or time
6211averaged),
[5]6212cross sections (instantaneous or time averaged), vertical profiles,
6213spectra) shall be output (</font>in <font face="Thorndale">s).&nbsp;</font></p>
[108]6214
6215
6216
[354]6217
6218
[108]6219      <span lang="en-GB"><font face="Thorndale">If
[48]6220data output&nbsp;is switched on (see </font></span><a href="chapter_4.2.html#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a><span lang="en-GB"><font face="Thorndale">, <a href="#data_output_pr">data_output_pr</a>, <a href="#data_output_sp">data_output_sp</a>, and </font></span><a href="chapter_4.2.html#section_xy"><span lang="en-GB"><font face="Thorndale">section_xy</font></span></a><span lang="en-GB"><font face="Thorndale">), this
6221parameter can be used to
[5]6222assign the temporal interval at which these data shall be
[48]6223output. </font></span><span lang="en-GB"><font face="Thorndale">Output can be skipped at the beginning of a
6224simulation using parameter <a href="#skip_time_data_output">skip_time_data_output</a>,
6225which has zero value by default. </font></span><span lang="en-GB"><font face="Thorndale">Reference
6226time is the beginning of the simulation, i.e. output
6227takes place at times t = <b>skip_time_data_output +
6228dt_data_output</b>, <span style="font-weight: bold;">skip_time_data_output</span>
6229+ 2*<b>dt_data_output</b>, <span style="font-weight: bold;">skip_time_data_output</span>
6230+ 3*<b>dt_data_output</b>,
[5]6231etc. Since output is only done at the discrete time levels given by
[48]6232the&nbsp;timestep used, the actual output times can slightly
6233deviate
[108]6234from these theoretical values</font></span><a href="chapter_4.2.html#dt_dopr_zeitpunkte"><span lang="en-GB"></span></a><span lang="en-GB"><font face="Thorndale">.<br>
6235
6236
[354]6237
6238
[108]6239      <br>
6240
6241
[354]6242
6243
[108]6244Individual temporal
[48]6245intervals for the different output quantities can be assigned using
6246parameters <a href="#dt_do3d">dt_do3d</a>, <a href="#dt_do2d_xy">dt_do2d_xy</a>, <a href="dt_do2d_xz">dt_do2d_xz</a>, <a href="#dt_do2d_yz">dt_do2d_yz</a>, <a href="#dt_dopr">dt_dopr</a>, <a href="#dt_dosp">dt_dosp</a>,
6247and <a href="#dt_data_output_av">dt_data_output_av</a>.</font></span>
[108]6248      </td>
6249
6250
[354]6251
6252
[108]6253 </tr>
6254
6255
[354]6256
6257
[108]6258 <tr>
6259
6260
[354]6261
6262
[108]6263 <td style="vertical-align: top;"><a name="dt_data_output_av"></a><span style="font-weight: bold;">dt_data_output_av</span><br>
6264
6265
6266
[354]6267
6268
[108]6269      </td>
6270
6271
[354]6272
6273
[108]6274 <td style="vertical-align: top;">R<br>
6275
6276
[354]6277
6278
[108]6279 </td>
6280
6281
6282
[354]6283
6284
[108]6285      <td style="vertical-align: top;"><i>value of
6286&nbsp;<a href="chapter_4.2.html#dt_data_output">dt_data_<br>
6287
6288
[354]6289
6290
[108]6291output</a></i>
6292      </td>
6293
6294
[354]6295
6296
[108]6297 <td style="vertical-align: top;">
6298     
6299     
[354]6300     
6301     
[108]6302      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal interval</font>
[5]6303at which time averaged 3d volume data and/or 2d cross section data
[108]6304shall be output (</font>in <font face="Thorndale">s).&nbsp;</font></p>
6305
6306
[354]6307
6308
[108]6309      <span lang="en-GB"><font face="Thorndale">If data
[48]6310output of time averaged 2d and 3d data is switched on (see </font></span><a href="chapter_4.2.html#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a>&nbsp;<span lang="en-GB"><font face="Thorndale">and </font></span><a href="chapter_4.2.html#section_xy"><span lang="en-GB"><font face="Thorndale">section_xy</font></span></a><span lang="en-GB"><font face="Thorndale">), this
6311parameter can be used to
[5]6312assign the temporal interval at which they shall be
[48]6313output. </font></span><span lang="en-GB"><font face="Thorndale">Output can be skipped at the beginning of a
6314simulation using parameter <a href="#skip_time_data_output_av">skip_time_data_output_av</a>,
6315which has zero value by default. </font></span><span lang="en-GB"><font face="Thorndale">Reference
6316time is the beginning of the simulation, i.e. output
6317takes place at times t = <b>skip_time_data_output_av +
6318dt_data_output_av</b>, <span style="font-weight: bold;">skip_time_data_output_av</span>
6319+ 2*<b>dt_data_output_av</b>, <span style="font-weight: bold;">skip_time_data_output_av</span>
6320+ 3*<b>dt_data_output_av</b>,
[5]6321etc. Since output is only done at the discrete time levels given by
[48]6322the&nbsp;timestep used, the actual output times can slightly
6323deviate from
[108]6324these theoretical values</font></span><a href="chapter_4.2.html#dt_dopr_zeitpunkte"><span lang="en-GB"></span></a><span lang="en-GB"><font face="Thorndale">.<br>
6325
6326
[354]6327
6328
[108]6329      <br>
6330
6331
[354]6332
6333
[108]6334      </font></span>The
[48]6335length of the averaging interval is controlled via parameter <a href="chapter_4.2.html#averaging_interval">averaging_interval</a>.</td>
[108]6336
6337
6338
[354]6339
6340
[108]6341    </tr>
6342
6343
[354]6344
6345
[108]6346    <tr>
6347
6348
[354]6349
6350
[108]6351 <td style="vertical-align: top;"> 
6352     
6353     
[354]6354     
6355     
[108]6356      <p><a name="dt_disturb"></a><b>dt_disturb</b></p>
6357
6358
6359
[354]6360
6361
[108]6362      </td>
6363
6364
[354]6365
6366
[108]6367 <td style="vertical-align: top;">R</td>
6368
6369
6370
[354]6371
6372
[108]6373      <td style="vertical-align: top;"><i>9999999.9</i></td>
6374
6375
6376
[354]6377
6378
[108]6379      <td style="vertical-align: top;"> 
6380     
6381     
[354]6382     
6383     
[108]6384      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]6385interval</font> at which random
[5]6386perturbations are to be imposed on the horizontal velocity field
[48]6387(</font>in <font face="Thorndale">s).&nbsp; </font>
[108]6388      </p>
6389
6390
[354]6391
6392
[108]6393 
6394     
6395     
[354]6396     
6397     
[108]6398      <p><span lang="en-GB"><font face="Thorndale, serif">The parameter </font></span><a href="#create_disturbances"><span lang="en-GB"><font face="Thorndale, serif">create_disturbances</font></span></a><font face="Thorndale, serif"><span lang="en-GB">
[48]6399describes how to impose
6400random perturbations to the horizontal velocity field</span></font><font face="Thorndale, serif"><span lang="en-GB">.</span>
[108]6401      </font> </p>
6402
6403
[354]6404
6405
[108]6406 </td>
6407
6408
[354]6409
6410
[108]6411 </tr>
6412
6413
[354]6414
6415
[108]6416 <tr>
6417
6418
[354]6419
6420
[108]6421 <td style="vertical-align: top;"> 
6422     
6423     
[354]6424     
6425     
[108]6426      <p><a name="dt_dopr"></a><b>dt_dopr</b></p>
6427
6428
6429
[354]6430
6431
[108]6432      </td>
6433
6434
[354]6435
6436
[108]6437 <td style="vertical-align: top;">R</td>
6438
6439
6440
[354]6441
6442
[108]6443      <td style="vertical-align: top;"><i>value of
6444&nbsp;<a href="#dt_data_output">dt_data_<br>
6445
6446
[354]6447
6448
[108]6449output</a></i></td>
6450
6451
6452
[354]6453
6454
[108]6455      <td style="vertical-align: top;"> 
6456     
6457     
[354]6458     
6459     
[108]6460      <p><span lang="en-GB"><font face="Thorndale">Temporal
[48]6461interval at
[5]6462which data&nbsp;of vertical profiles shall be output (to local
[48]6463file <a href="chapter_3.4.html#DATA_1D_PR_NETCDF">DATA_1D_PR_NETCDF</a>
6464or/and </font></span><a href="chapter_3.4.html#PLOT1D_DATA"><span lang="en-GB"><font face="Thorndale">PLOT1D_DATA</font></span></a><span lang="en-GB"><font face="Thorndale">) (</font></span>in
[108]6465      <span lang="en-GB"><font face="Thorndale">s).&nbsp;
6466      </font></span> </p>
6467
6468
[354]6469
6470
[108]6471 
6472     
6473     
[354]6474     
6475     
[108]6476      <p><span lang="en-GB"><font face="Thorndale">If output of
[48]6477horizontally averaged vertical profiles is switched on (see </font></span><a href="chapter_4.2.html#data_output_pr"><span lang="en-GB"><font face="Thorndale">data_output_pr</font></span></a><span lang="en-GB"><font face="Thorndale">), </font></span><span lang="en-GB"><font face="Thorndale">this
6478parameter can be used to
6479assign the temporal interval at which profile data shall be output.</font></span><span lang="en-GB"><font face="Thorndale"> </font></span><span lang="en-GB"><font face="Thorndale">Output can
6480be skipped at the beginning of a simulation using parameter <a href="#skip_time_dopr">skip_time_dopr</a>, which has
6481zero value by default. </font></span><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">Reference
6482time is the beginning
[5]6483of the simulation, thus t = 0,&nbsp;</font></span><span lang="en-GB"><font face="Thorndale">i.e. output
[48]6484takes place at times t = <b>skip_time_dopr + dt_dopr</b>, <span style="font-weight: bold;">skip_time_dopr</span> + 2*<b>dt_dopr</b>,
[108]6485      <span style="font-weight: bold;">skip_time_dopr</span>
[48]6486+ 3*<b>dt_dopr</b>,
[5]6487etc.</font></span><span lang="en-GB"><font face="Thorndale"> Since
6488profiles can not be calculated for times lying within a time step
6489interval, the output times can deviate from these theoretical values.
6490If a time step ranges from t = 1799.8 to t = 1800.2, then in the
6491example above the output would take place at t = 1800.2. In general,
[48]6492the output always lie between t = 1800.0 and t = 1800.0 + </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale">dt</font></span></a><span lang="en-GB"><font face="Thorndale">. If the
6493model uses a variable time step, these
[5]6494deviations from the theoretical output times will of course be
[108]6495different for each output time.<br>
6496
6497
[354]6498
6499
[108]6500 </font></span></p>
6501
6502
6503
[354]6504
6505
[108]6506     
6507     
[354]6508     
6509     
[108]6510      <p><span lang="en-GB"><font face="Thorndale">In
[48]6511order to
6512guarantee an output of profile data at the end of a simulation (see </font></span><font><a href="chapter_4.1.html#end_time"><span lang="en-GB"><font face="Thorndale">end_time</font></span></a></font><span lang="en-GB"><font face="Thorndale">) in any way</font></span><span lang="en-GB"><font face="Thorndale">,&nbsp;
[108]6513      <span style="font-weight: bold;">end_time</span>
[5]6514should be equal or a little bit
6515larger than the respective theoretical output time. For example, if <b>dt_dopr</b>
[48]6516= <i>900.0</i><span style="font-style: italic;">
[108]6517      </span>and 3600.0
[5]6518seconds are to be simulated, then <b>end_time</b>
[48]6519&gt;= 3600.0 should be chosen.</font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"></span></a><span lang="en-GB"><font face="Thorndale"><span style="font-weight: bold;"></span>&nbsp; </font></span>
[108]6520      </p>
6521
6522
[354]6523
6524
[108]6525 
6526     
6527     
[354]6528     
6529     
[108]6530      <p><span lang="en-GB"><font face="Thorndale">A selection of
[48]6531profiles to be output can be done via parameter </font></span><a href="chapter_4.2.html#data_output_pr"><span lang="en-GB"><font face="Thorndale">data_output_pr</font></span></a><span lang="en-GB"><font face="Thorndale">.&nbsp;</font></span>
[108]6532      </p>
6533
6534
[354]6535
6536
[108]6537 </td>
6538
6539
[354]6540
6541
[108]6542 </tr>
6543
6544
[354]6545
6546
[108]6547 <tr>
6548
6549
[354]6550
6551
[108]6552 <td style="vertical-align: top;"><a name="dt_dopr_listing"></a><span style="font-weight: bold;">dt_dopr_listing</span><br>
6553
6554
6555
[354]6556
6557
[108]6558      </td>
6559
6560
[354]6561
6562
[108]6563 <td style="vertical-align: top;">R<br>
6564
6565
[354]6566
6567
[108]6568 </td>
6569
6570
6571
[354]6572
6573
[108]6574      <td style="vertical-align: top;"><i>9999999.9</i></td>
6575
6576
6577
[354]6578
6579
[108]6580      <td style="vertical-align: top;"> 
6581     
6582     
[354]6583     
6584     
[108]6585      <p><span lang="en-GB"><font face="Thorndale, serif">Temporal
[48]6586interval</font> at which data <font face="Thorndale">of
6587vertical
6588profiles shall be output (output for printouts, local file </font></span><a href="chapter_3.4.html#LIST_PROFIL"><span lang="en-GB"><font face="Thorndale">LIST_PROFIL</font></span></a><span lang="en-GB"><font face="Thorndale">) (</font></span>in
[108]6589      <span lang="en-GB"><font face="Thorndale">s).&nbsp;</font></span>
6590      </p>
6591
6592
[354]6593
6594
[108]6595 
6596     
6597     
[354]6598     
6599     
[108]6600      <p>T<span lang="en-GB"></span><a href="chapter_4.2.html#pr1d"><span lang="en-GB"></span></a><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">his
[5]6601parameter can be used to
[48]6602assign the temporal interval at which profile data shall be output.</font></span><span lang="en-GB"><font face="Thorndale"> Reference
6603time is the beginning
6604of the simulation, thus t = 0. For example if <b>dt_dopr_listing</b>
6605= 1800.0,
[5]6606then output takes place at t = 1800.0, 3600.0, 5400.0, etc. Since
6607profiles can not be calculated for times lying within a time step
6608interval, the output times can deviate from these theoretical values.
6609If a time step ranges from t = 1799.8 to t = 1800.2, then in the
6610example above the output would take place at t = 1800.2. In general,
[48]6611the output always lie between t = 1800.0 and t = 1800.0 + </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale">dt</font></span></a> <span lang="en-GB"><font face="Thorndale">(numbers
6612are related to
[5]6613the
6614example above). If the model uses a variable time step, these
6615deviations from the theoretical output times will of course be
[108]6616different for each output time.<br>
6617
6618
[354]6619
6620
[108]6621 </font></span></p>
6622
6623
6624
[354]6625
6626
[108]6627     
6628     
[354]6629     
6630     
[108]6631      <p><span lang="en-GB"><font face="Thorndale">In
[48]6632order to
6633guarantee an output of profile data at the end of a simulation (see </font></span><font><a href="chapter_4.1.html#end_time"><span lang="en-GB"><font face="Thorndale">end_time</font></span></a></font><span lang="en-GB"><font face="Thorndale">) in any way</font></span><span lang="en-GB"><font face="Thorndale">,&nbsp;
[108]6634      <span style="font-weight: bold;">end_time</span>
[5]6635should be a little bit
6636larger than the respective theoretical output time. For example, if <b>dt_dopr_listing</b>
[48]6637= <i>900.0</i><span style="font-style: italic;">
[108]6638      </span>and 3600.0
[5]6639seconds are to be simulated, then it should be at least&nbsp; <b>end_time</b>
[48]6640&gt; 3600.0 + </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale">dt</font></span></a><span lang="en-GB"><font face="Thorndale">. If
6641variable time steps are used
[5]6642(which is the default), <span style="font-weight: bold;">dt</span>
6643should be properly estimated.&nbsp; </font></span> </p>
[108]6644
6645
6646
[354]6647
6648
[108]6649     
6650     
[354]6651     
6652     
[108]6653      <p><span lang="en-GB"><font face="Thorndale">Data
[48]6654and output
6655format of the file </font></span><a href="chapter_3.4.html#LIST_PROFIL"><span lang="en-GB"><font face="Thorndale">LIST_PROFIL</font></span></a>
[108]6656      <span lang="en-GB"><font face="Thorndale">is
[48]6657internally fixed. In this file
[5]6658the profiles of the most important model variables are arranged in
[108]6659adjacent columns.</font></span> </p>
6660
6661
[354]6662
6663
[108]6664 </td>
6665
6666
[354]6667
6668
[108]6669 </tr>
6670
6671
6672
[354]6673
6674
[108]6675    <tr>
6676
6677
[354]6678
6679
[108]6680 <td style="vertical-align: top;"> 
6681     
6682     
[354]6683     
6684     
[108]6685      <p><a name="dt_dots"></a><b>dt_dots</b></p>
6686
6687
6688
[354]6689
6690
[108]6691      </td>
6692
6693
[354]6694
6695
[108]6696 <td style="vertical-align: top;">R</td>
6697
6698
6699
[354]6700
6701
[108]6702      <td style="vertical-align: top;"><span style="font-style: italic;">see right</span></td>
6703
6704
6705
[354]6706
6707
[108]6708      <td style="vertical-align: top;"> 
6709     
6710     
[354]6711     
6712     
[108]6713      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]6714interval</font> at which&nbsp;time series data shall be
6715output (</font>in <font face="Thorndale">s).&nbsp;</font>
[108]6716      </p>
6717
6718
[354]6719
6720
[108]6721 
6722     
6723     
[354]6724     
6725     
[108]6726      <p>The default interval for the output of timeseries
[48]6727is calculated as shown below (this tries to minimize the number of
[108]6728calls of <span style="font-family: Courier New,Courier,monospace;">flow_statistics</span>)</p>
6729
6730
[354]6731
6732
[108]6733     
6734     
[354]6735     
6736     
[108]6737      <p style="font-family: Courier New,Courier,monospace;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
[48]6738IF ( <a href="#averaging_interval_pr">averaging_interval_pr</a>
[108]6739== 0.0 )&nbsp; THEN<br>
6740
6741
[354]6742
6743
[108]6744&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6745      <span style="font-weight: bold;">dt_dots</span> =
6746MIN( <a href="#dt_run_control">dt_run_control</a>, <a href="#dt_dopr">dt_dopr</a> )<br>
6747
6748
[354]6749
6750
[108]6751&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6752ELSE<br>
6753
6754
[354]6755
6756
[108]6757&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6758      <span style="font-weight: bold;">dt_dots</span> =
[48]6759MIN( dt_run_control, <a href="#dt_averaging_input_pr">dt_averaging_input_pr</a>
[108]6760)<br>
6761
6762
[354]6763
6764
[108]6765&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6766ENDIF</p>
6767
6768
[354]6769
6770
[108]6771     
6772     
[354]6773     
6774     
[108]6775      <p>This parameter can be used to
[48]6776assign the temporal interval at which data points shall be output. <span lang="en-GB"><font face="Thorndale">Reference
6777time is the beginning of
[5]6778&nbsp;the simulation, i.e. output takes place at times t = <b>dt_dots</b>,
[48]67792*<b>dt_dots</b>, 3*<b>dt_dots</b>, etc. The
6780actual output times can
6781deviate from these theoretical values (see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">).&nbsp;
6782Is <b>dt_dots</b> &lt; </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale">dt</font></span></a><span lang="en-GB"><font face="Thorndale">, then data
6783of the time series are
[5]6784written after each time step (if this is requested it should be <b>dt_dots</b>
[108]6785= <i>0</i>).</font></span></p>
6786
6787
[354]6788
6789
[108]6790     
6791     
[354]6792     
6793     
[108]6794      <p><span lang="en-GB"><font face="Thorndale">The default
[48]6795value of <span style="font-weight: bold;">dt_dots</span>
[108]6796is calculated as follows:</font></span></p>
6797
6798
[354]6799
6800
[108]6801&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
[48]6802IF ( <a href="#averaging_interval_pr">averaging_interval_pr</a>
[108]6803== 0.0 )&nbsp; THEN<br>
6804
6805
[354]6806
6807
[108]6808&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6809      <span style="font-weight: bold;">dt_dots</span> =
6810MIN( <a href="#dt_run_control">dt_run_control</a>, <a href="#dt_dopr">dt_dopr</a> )<br>
6811
6812
[354]6813
6814
[108]6815&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6816ELSE<br>
6817
6818
[354]6819
6820
[108]6821&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6822      <span style="font-weight: bold;">dt_dots</span> =
[48]6823MIN( <span style="font-weight: bold;">dt_run_control</span>,
[108]6824      <a href="#dt_averaging_input_pr">dt_averaging_input_pr</a>
6825)<br>
6826
6827
[354]6828
6829
[108]6830&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
6831ENDIF<br>
6832
6833
[354]6834
6835
[108]6836      <br>
6837
6838
[354]6839
6840
[108]6841(which minimizes the number of calls of
6842routine flow_statistics).<br>
6843
6844
[354]6845
6846
[108]6847     
6848     
[354]6849     
6850     
[108]6851      <p>By default time series data
[48]6852is output to the local file <a href="chapter_3.4.html#DATA_1D_TS_NETCDF">DATA_1D_TS_NETCDF</a>.
6853Because of the default settings of <span style="font-weight: bold;">dt_dots</span>,
6854it will&nbsp;generally be created for each model run. The file's
6855format is NetCDF.&nbsp; Further details about processing NetCDF
[108]6856data are given in chapter <a href="chapter_4.5.1.html">4.5.1</a>.</p>
6857
6858
[354]6859
6860
[108]6861The
[48]6862file contains the following timeseries quantities (the first column
[108]6863gives the name of the quantities as used in the NetCDF file):<br>
6864
6865
[354]6866
6867
[108]6868     
6869     
[354]6870     
6871     
[108]6872      <table style="text-align: left; width: 100%;" cellpadding="2" cellspacing="2">
6873
6874
[354]6875
6876
[108]6877 <tbody>
6878
6879
[354]6880
6881
[108]6882 <tr>
6883
6884
[354]6885
6886
[108]6887 <td style="font-style: italic; vertical-align: middle;">E<br>
6888
6889
6890
[354]6891
6892
[108]6893            </td>
6894
6895
[354]6896
6897
[555]6898 <td style="vertical-align: top;">Total (resolved and subgrid-scale)
[48]6899kinetic energy of
6900the flow (in m<sup>2</sup>/s<sup>2</sup>)
6901(normalized with respect to the total number of grid points).</td>
[108]6902
6903
6904
[354]6905
6906
[108]6907          </tr>
6908
6909
[354]6910
6911
[108]6912 <tr>
6913
6914
[354]6915
6916
[108]6917 <td style="font-style: italic; vertical-align: middle;">E*<br>
6918
6919
6920
[354]6921
6922
[108]6923            </td>
6924
6925
[354]6926
6927
[555]6928 <td style="vertical-align: top;">Resolved-scale kinetic
[48]6929energy of the flow (in m<sup>2</sup>/s<sup>2</sup>)<sup>
[108]6930            </sup>(normalized
[48]6931with respect to the total number of grid
[108]6932points)</td>
6933
6934
[354]6935
6936
[108]6937 </tr>
6938
6939
[354]6940
6941
[108]6942 <tr>
6943
6944
[354]6945
6946
[108]6947 <td style="vertical-align: top; font-style: italic;">dt<br>
6948
6949
6950
[354]6951
6952
[108]6953            </td>
6954
6955
[354]6956
6957
[108]6958 <td style="vertical-align: top;">Time step
6959size (in s).</td>
6960
6961
[354]6962
6963
[108]6964 </tr>
6965
6966
[354]6967
6968
[108]6969 <tr>
6970
6971
[354]6972
6973
[108]6974 <td style="vertical-align: top; font-style: italic;">u<sub>*</sub></td>
6975
6976
6977
[354]6978
6979
[108]6980            <td style="vertical-align: top;">Friction velocity (in
[48]6981m/s)
[108]6982(horizontal average).</td>
6983
6984
[354]6985
6986
[108]6987 </tr>
6988
6989
[354]6990
6991
[108]6992 <tr>
6993
6994
[354]6995
6996
[108]6997 <td style="vertical-align: top; font-style: italic;">w<sub>*</sub></td>
6998
6999
7000
[354]7001
7002
[108]7003            <td style="vertical-align: top;">Vertical velocity scale
[48]7004of
[108]7005the CBL (in m/s) (horizontal average)</td>
7006
7007
[354]7008
7009
[108]7010 </tr>
7011
7012
[354]7013
7014
[108]7015 <tr>
7016
7017
7018
[354]7019
7020
[108]7021            <td style="vertical-align: top; font-style: italic;">th<sub>*</sub></td>
7022
7023
7024
[354]7025
7026
[108]7027            <td style="vertical-align: top;">Temperature
[48]7028scale (Prandtl layer), defined as <i>w"pt"0
7029/&nbsp;</i><i>u<sub>*</sub></i>
7030(horizontal
[108]7031average) (in K).</td>
7032
7033
[354]7034
7035
[108]7036 </tr>
7037
7038
[354]7039
7040
[108]7041 <tr>
7042
7043
[354]7044
7045
[108]7046 <td style="vertical-align: top; font-style: italic;">umax<br>
7047
7048
7049
[354]7050
7051
[108]7052            </td>
7053
7054
[354]7055
7056
[108]7057 <td style="vertical-align: top;">Maximum
[48]7058u-component of the
[108]7059velocity (in m/s).</td>
7060
7061
[354]7062
7063
[108]7064 </tr>
7065
7066
[354]7067
7068
[108]7069 <tr>
7070
7071
[354]7072
7073
[108]7074 <td style="vertical-align: top; font-style: italic;">vmax<br>
7075
7076
7077
[354]7078
7079
[108]7080            </td>
7081
7082
[354]7083
7084
[108]7085 <td style="vertical-align: top;">Maximum
[48]7086v-component of the
[108]7087velocity (in m/s).</td>
7088
7089
[354]7090
7091
[108]7092 </tr>
7093
7094
[354]7095
7096
[108]7097 <tr>
7098
7099
[354]7100
7101
[108]7102 <td style="vertical-align: top; font-style: italic;">wmax<br>
7103
7104
7105
[354]7106
7107
[108]7108            </td>
7109
7110
[354]7111
7112
[108]7113 <td style="vertical-align: top;">Maximum
[48]7114w-component of the
[108]7115velocity (in m/s).</td>
7116
7117
[354]7118
7119
[108]7120 </tr>
7121
7122
[354]7123
7124
[108]7125 <tr>
7126
7127
[354]7128
7129
[108]7130 <td style="vertical-align: top; font-style: italic;">div_old<br>
7131
7132
7133
[354]7134
7135
[108]7136            </td>
7137
7138
[354]7139
7140
[108]7141 <td style="vertical-align: top;">Divergence
[48]7142of the velocity
7143field before the pressure
7144solver has been called (normalized with respect to the total number of
[108]7145grid points) (in 1/s).</td>
7146
7147
[354]7148
7149
[108]7150 </tr>
7151
7152
[354]7153
7154
[108]7155 <tr>
7156
7157
[354]7158
7159
[108]7160 <td style="vertical-align: top; font-style: italic;">div_new</td>
7161
7162
7163
[354]7164
7165
[108]7166            <td style="vertical-align: top;">Divergence of the
[48]7167velocity
7168field after the pressure
7169solver has been called (normalized with respect to the total number of
[108]7170grid points) (in 1/s).</td>
7171
7172
[354]7173
7174
[108]7175 </tr>
7176
7177
[354]7178
7179
[108]7180 <tr>
7181
7182
[354]7183
7184
[108]7185 <td style="vertical-align: top; font-style: italic;">z_i_wpt</td>
7186
7187
7188
[354]7189
7190
[108]7191            <td style="vertical-align: top;">Height of the convective
[48]7192boundary layer (horizontal average)
7193determined by the height of the minimum sensible heat flux (in m).</td>
[108]7194
7195
7196
[354]7197
7198
[108]7199          </tr>
7200
7201
[354]7202
7203
[108]7204 <tr>
7205
7206
[354]7207
7208
[108]7209 <td style="vertical-align: top; font-style: italic;">z_i_pt</td>
7210
7211
7212
[354]7213
7214
[108]7215            <td style="vertical-align: top;">Height of the convective
[48]7216boundary layer (horizontal average)
[291]7217determined by the temperature profile, following the criterion of Sullivan et al. (1998) (in m).</td>
[108]7218
7219
[354]7220
7221
[108]7222 </tr>
7223
7224
[354]7225
7226
[108]7227 <tr>
7228
7229
7230
[354]7231
7232
[108]7233            <td style="vertical-align: top; font-style: italic;">w"pt"0</td>
7234
7235
7236
[354]7237
7238
[108]7239            <td style="vertical-align: top;">Subgrid-scale sensible
[197]7240heat flux at k=0 (horizontal
7241average), constant within Prandtl-layer (in K m/s).</td>
[108]7242
7243
[354]7244
7245
[108]7246 </tr>
7247
7248
[354]7249
7250
[108]7251 <tr>
7252
7253
[354]7254
7255
[108]7256 <td style="vertical-align: top; font-style: italic;">w"pt"</td>
7257
7258
7259
[354]7260
7261
[108]7262            <td style="vertical-align: top;">Subgrid-scale heat flux
[48]7263(horizontal average) for z = zw(1) (in K
[108]7264m/s).</td>
7265
7266
[354]7267
7268
[108]7269 </tr>
7270
7271
[354]7272
7273
[108]7274 <tr>
7275
7276
[354]7277
7278
[108]7279 <td style="vertical-align: top; font-style: italic;">wpt</td>
7280
7281
7282
[354]7283
7284
[108]7285            <td style="vertical-align: top;">Total heat flux
7286(horizontal average) for z = zw(1) (in K m/s).</td>
7287
7288
[354]7289
7290
[108]7291 </tr>
7292
7293
[354]7294
7295
7296 <tr>
7297
7298            <td align="undefined" valign="undefined"><span style="font-style: italic;">w"u"0</span></td>
7299
7300            <td align="undefined" valign="undefined">Subgrid-scale momentum flux (u-component) at k=0 (horizontal average), constant within Prandtl-layer (in m<sup>2</sup>/s<sup>2</sup>).</td>
7301
7302          </tr>
7303
7304          <tr>
7305
7306            <td align="undefined" valign="undefined"><span style="font-style: italic;">w"v"0</span></td>
7307
7308            <td align="undefined" valign="undefined">Subgrid-scale momentum flux (v-component) at k=0 (horizontal average), constant within Prandtl-layer (in m<sup>2</sup>/s<sup>2</sup>).</td>
7309
7310          </tr>
7311
7312          <tr>
7313
7314            <td align="undefined" valign="undefined"><span style="font-style: italic;">w"q"0</span></td>
7315
7316            <td align="undefined" valign="undefined">Subgrid-scale
[197]7317humidity flux at k=0 (horizontal average), constant within
7318Prandtl-layer (in kg/kg m/s). Zero values are output if humidity is not
[354]7319used.</td>
[108]7320
[354]7321          </tr>
[108]7322
[354]7323          <tr>
[108]7324
[354]7325
7326
7327
7328
[108]7329            <td style="vertical-align: top; font-style: italic;">pt(0)</td>
7330
7331
7332
[354]7333
7334
[108]7335            <td style="vertical-align: top;">Potential temperature at
7336the surface (horizontal average) (in K).</td>
7337
7338
[354]7339
7340
[108]7341 </tr>
7342
7343
[354]7344
7345
[108]7346 <tr>
7347
7348
7349
[354]7350
7351
[108]7352            <td style="vertical-align: top; font-style: italic;">pt(zp)</td>
7353
7354
7355
[354]7356
7357
[108]7358            <td style="vertical-align: top;">Potential temperature for
7359z = zu(1) (horizontal average) (in K).</td>
7360
7361
[354]7362
7363
[108]7364 </tr>
7365
7366
[354]7367
7368
[197]7369 
[108]7370
7371
[197]7372 
[108]7373
7374
[197]7375 
[108]7376
7377
7378 <tr>
7379
7380
[354]7381
7382
[108]7383 <td style="vertical-align: top; font-style: italic;">L</td>
7384
7385
7386
[354]7387
7388
[108]7389            <td style="vertical-align: top;">Monin-Obukhov length.</td>
7390
7391
7392
[354]7393
7394
[108]7395          </tr>
7396
7397
[354]7398
7399
[108]7400 
7401       
7402       
[354]7403       
7404       
[108]7405        </tbody> 
7406     
7407     
[354]7408     
7409     
[108]7410      </table>
7411
7412
[354]7413
7414
[108]7415      <br>
7416
7417
[354]7418
7419
[108]7420Additionally, the
[48]7421user can add his own timeseries quantities to the file, by using the
7422user-interface subroutines<span style="font-family: Courier New,Courier,monospace;"> <a href="chapter_3.5.1.html#user_init">user_init</a> </span>and<span style="font-family: Courier New,Courier,monospace;"> <a href="chapter_3.5.1.html#user_statistics">user_statistics</a></span>.
7423These routines contain (as comment lines) a simple example how to do
[108]7424this.<br>
7425
7426
[354]7427
7428
[108]7429      <br>
7430
7431
[354]7432
7433
[108]7434Time series data refers to the total
[48]7435domain, but time series for subdomains can also be output (see <a href="chapter_4.1.html#statistic_regions">statistic_regions</a>).
7436However, the following time series always present the values of the
7437total model domain (even with output for subdomains): <i>umax</i>,
[108]7438      <i>vmax</i>, <i>wmax</i>, <i>div_old</i>,
7439      <i>div_new</i>.</td>
7440
7441
[354]7442
7443
[108]7444 </tr>
7445
7446
[354]7447
7448
[108]7449 <tr>
7450
7451
[354]7452
7453
[108]7454 <td style="vertical-align: top;"> 
7455     
7456     
[354]7457     
7458     
[108]7459      <p><a name="dt_do2d_xy"></a><b>dt_do2d_xy</b></p>
7460
7461
7462
[354]7463
7464
[108]7465      </td>
7466
7467
[354]7468
7469
[108]7470 <td style="vertical-align: top;">R</td>
7471
7472
7473
[354]7474
7475
[108]7476      <td style="vertical-align: top;"><i>value of
7477&nbsp;<a href="chapter_4.2.html#dt_data_output">dt_data_<br>
7478
7479
[354]7480
7481
[108]7482output</a></i></td>
7483
7484
7485
[354]7486
7487
[108]7488      <td style="vertical-align: top;"> 
7489     
7490     
[354]7491     
7492     
[108]7493      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]7494interval</font> at which&nbsp;horizontal cross section data
7495shall be output (</font>in <font face="Thorndale">s).&nbsp;
[108]7496      </font> </p>
7497
7498
[354]7499
7500
[108]7501 
7502     
7503     
[354]7504     
7505     
[108]7506      <p><span lang="en-GB"><font face="Thorndale">If output of
[5]7507horizontal cross sections is switched on (see </font></span><a href="#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a>
[108]7508      <span lang="en-GB"><font face="Thorndale">and
7509      </font></span><a href="#section_xy"><span lang="en-GB"><font face="Thorndale">section_xy</font></span></a><span lang="en-GB"><font face="Thorndale">), this
[48]7510parameter can be used to
[5]7511assign the temporal interval at which cross section data shall be
[48]7512output. </font></span><span lang="en-GB"><font face="Thorndale">Output can be skipped at the beginning of a
7513simulation using parameter <a href="#skip_time_do2d_xy">skip_time_do2d_xy</a>,
7514which has zero value by default. </font></span><span lang="en-GB"><font face="Thorndale">Reference
7515time is the beginning of the simulation, i.e. output
7516takes place at times t = <b>skip_time_do2d_xy + dt_do2d_xy</b>,
[108]7517      <span style="font-weight: bold;">skip_time_do2d_xy</span>
[48]7518+ 2*<b>dt_do2d_xy</b>, <span style="font-weight: bold;">skip_time_do2d_xy</span>
7519+ 3*<b>dt_do2d_xy</b>,
[5]7520etc. The actual output times can deviate from these theoretical values
7521(see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">).<br>
[108]7522
7523
7524
[354]7525
7526
[108]7527      </font></span></p>
7528
7529
[354]7530
7531
[108]7532 
7533     
7534     
[354]7535     
7536     
[108]7537      <p><span lang="en-GB"><font face="Thorndale">Parameter </font></span><a href="#do2d_at_begin"><span lang="en-GB"><font face="Thorndale">do2d_at_begin</font></span></a>
[48]7538has to be used if an additional output is wanted at the start of a run <span lang="en-GB"><font face="Thorndale">(thus at
7539the time t = 0 or at the
[5]7540respective starting times of restart runs).</font></span> </p>
[108]7541
7542
7543
[354]7544
7545
[108]7546      </td>
7547
7548
[354]7549
7550
[108]7551 </tr>
7552
7553
[354]7554
7555
[108]7556 <tr>
7557
7558
[354]7559
7560
[108]7561 <td style="vertical-align: top;"> 
7562     
7563     
[354]7564     
7565     
[108]7566      <p><a name="dt_do2d_xz"></a><b>dt_do2d_xz</b></p>
7567
7568
7569
[354]7570
7571
[108]7572      </td>
7573
7574
[354]7575
7576
[108]7577 <td style="vertical-align: top;">R</td>
7578
7579
7580
[354]7581
7582
[108]7583      <td style="vertical-align: top;"><i>value of
7584&nbsp;<a href="chapter_4.2.html#dt_data_output">dt_data_<br>
7585
7586
[354]7587
7588
[108]7589output</a></i></td>
7590
7591
7592
[354]7593
7594
[108]7595      <td style="vertical-align: top;"> 
7596     
7597     
[354]7598     
7599     
[108]7600      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]7601interval</font> at which&nbsp;vertical cross sections data
7602(xz) shall be output (</font>in <font face="Thorndale">s).&nbsp;
[108]7603      </font> </p>
7604
7605
[354]7606
7607
[108]7608 
7609     
7610     
[354]7611     
7612     
[108]7613      <p><span lang="en-GB"><font face="Thorndale">If output of
[5]7614horizontal cross sections is switched on (see </font></span><a href="#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a>
[108]7615      <span lang="en-GB"><font face="Thorndale">and
7616      </font></span><a href="#section_xz"><span lang="en-GB"><font face="Thorndale">section_xz</font></span></a><span lang="en-GB"><font face="Thorndale">),
[5]7617this parameter can be used to assign the temporal interval at which
[48]7618cross section data shall be output. </font></span><span lang="en-GB"><font face="Thorndale">Output can
7619be skipped at the beginning of a simulation using parameter <a href="#skip_time_do2d_xz">skip_time_do2d_xz</a>, which
7620has zero value by default. </font></span><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">Reference time is the beginning of
7621the simulation, i.e. output takes place at times t = <b>skip_time_do2d_xz
7622+ dt_do2d_xz</b>,
[108]7623      <span style="font-weight: bold;">skip_time_do2d_xz</span>
[48]7624+ 2*<b>dt_do2d_xz</b>, <span style="font-weight: bold;">skip_time_do2d_xz</span>
7625+ 3*<b>dt_do2d_xz</b>, etc. The actual output times
[5]7626can deviate from these theoretical values (see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">).<br>
[108]7627
7628
7629
[354]7630
7631
[108]7632      </font></span></p>
7633
7634
[354]7635
7636
[108]7637 
7638     
7639     
[354]7640     
7641     
[108]7642      <p><span lang="en-GB"><font face="Thorndale">Parameter </font></span><a href="#do2d_at_begin"><span lang="en-GB"><font face="Thorndale">do2d_at_begin</font></span></a>
[48]7643has to be used if an additional output is wanted at the start of a run <span lang="en-GB"><font face="Thorndale">(thus at
7644the time t = 0 or at the
[5]7645respective starting times of restart runs).</font></span> </p>
[108]7646
7647
7648
[354]7649
7650
[108]7651      </td>
7652
7653
[354]7654
7655
[108]7656 </tr>
7657
7658
[354]7659
7660
[108]7661 <tr>
7662
7663
[354]7664
7665
[108]7666 <td style="vertical-align: top;"> 
7667     
7668     
[354]7669     
7670     
[108]7671      <p><a name="dt_do2d_yz"></a><b>dt_do2d_yz</b></p>
7672
7673
7674
[354]7675
7676
[108]7677      </td>
7678
7679
[354]7680
7681
[108]7682 <td style="vertical-align: top;">R</td>
7683
7684
7685
[354]7686
7687
[108]7688      <td style="vertical-align: top;"><i>value of
7689&nbsp;<a href="chapter_4.2.html#dt_data_output">dt_data_<br>
7690
7691
[354]7692
7693
[108]7694output</a></i></td>
7695
7696
7697
[354]7698
7699
[108]7700      <td style="vertical-align: top;"> 
7701     
7702     
[354]7703     
7704     
[108]7705      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]7706interval</font> at which&nbsp;vertical cross section data
7707(yz) shall be output (</font>in s<font face="Thorndale">).&nbsp;
[108]7708      </font> </p>
7709
7710
[354]7711
7712
[108]7713 
7714     
7715     
[354]7716     
7717     
[108]7718      <p><span lang="en-GB"><font face="Thorndale">If output of
[5]7719horizontal cross sections is switched on (see </font></span><a href="#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a>
[108]7720      <span lang="en-GB"><font face="Thorndale">and
7721      </font></span><a href="#section_yz"><span lang="en-GB"><font face="Thorndale">section_yz</font></span></a><span lang="en-GB"><font face="Thorndale">),
[5]7722this parameter can be used to assign the temporal interval at which
[48]7723cross section data shall be output. </font></span><span lang="en-GB"><font face="Thorndale">Output can
7724be skipped at the beginning of a simulation using parameter <a href="#skip_time_do2d_yz">skip_time_do2d_yz</a>, which
7725has zero value by default. </font></span><span lang="en-GB"></span><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">Reference
7726time is the beginning of
7727the simulation, i.e. output takes place at times t = <b>skip_time_do2d_yz
7728+ dt_do2d_yz</b>,
[108]7729      <span style="font-weight: bold;">skip_time_do2d_yz</span>
[48]7730+ 2*<b>dt_do2d_yz</b>, <span style="font-weight: bold;">skip_time_do2d_yz
[108]7731      </span>+ 3*<b>dt_do2d_yz</b>, etc. The actual output
[48]7732times
[5]7733can deviate from these theoretical values (see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">).<br>
[108]7734
7735
7736
[354]7737
7738
[108]7739      </font></span></p>
7740
7741
[354]7742
7743
[108]7744 
7745     
7746     
[354]7747     
7748     
[108]7749      <p><span lang="en-GB"><font face="Thorndale">Parameter </font></span><a href="#do2d_at_begin"><span lang="en-GB"><font face="Thorndale">do2d_at_begin</font></span></a>
[48]7750has to be used if an additional output is wanted at the start of a run <span lang="en-GB"><font face="Thorndale">(thus at
7751the time t = 0 or at the
[5]7752respective starting times of restart runs).</font></span> </p>
[108]7753
7754
7755
[354]7756
7757
[108]7758      </td>
7759
7760
[354]7761
7762
[108]7763 </tr>
7764
7765
[354]7766
7767
[108]7768 <tr>
7769
7770
[354]7771
7772
[108]7773 <td style="vertical-align: top;"> 
7774     
7775     
[354]7776     
7777     
[108]7778      <p><a name="dt_do3d"></a><b>dt_do3d</b></p>
7779
7780
7781
[354]7782
7783
[108]7784      </td>
7785
7786
[354]7787
7788
[108]7789 <td style="vertical-align: top;">R</td>
7790
7791
7792
[354]7793
7794
[108]7795      <td style="vertical-align: top;"><i>value of
7796&nbsp;<a href="chapter_4.2.html#dt_data_output">dt_data_<br>
7797
7798
[354]7799
7800
[108]7801output</a></i></td>
7802
7803
7804
[354]7805
7806
[108]7807      <td style="vertical-align: top;"> 
7808     
7809     
[354]7810     
7811     
[108]7812      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]7813interval</font> at which 3d volume data shall be output (</font>in
[108]7814      <font face="Thorndale">s).&nbsp; </font> </p>
7815
7816
7817
[354]7818
7819
[108]7820     
7821     
[354]7822     
7823     
[108]7824      <p><span lang="en-GB"><font face="Thorndale">If
[48]7825output of
78263d-volume data is switched on (see </font></span><font><a href="#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a>)<span style="font-family: thorndale;">, this parameter can be used
7827to assign
[5]7828th</span></font><span lang="en-GB"><font face="Thorndale">e temporal
[48]7829interval at which 3d-data shall be output. </font></span><span lang="en-GB"><font face="Thorndale">Output can
7830be skipped at the beginning of a simulation using parameter <a href="#skip_time_do3d">skip_time_do3d</a>, which has
7831zero value by default. </font></span><span lang="en-GB"></span><span lang="en-GB"></span><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">Reference
7832time is the
7833beginning of the simulation, i.e. output takes place at times t = <b>skip_time_do3d
7834+ dt_do3d</b>,
[108]7835      <span style="font-weight: bold;">skip_time_do3d</span>
[48]7836+ 2*<b>dt_do3d</b>, <span style="font-weight: bold;">skip_time_do3d</span>
7837+ 3*<b>dt_do3d</b>, etc. The actual output times can
[5]7838deviate from these theoretical values (see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">). <br>
[108]7839
7840
7841
[354]7842
7843
[108]7844      </font></span></p>
7845
7846
[354]7847
7848
[108]7849 
7850     
7851     
[354]7852     
7853     
[108]7854      <p><span lang="en-GB"><font face="Thorndale">Parameter </font></span><a href="#do3d_at_begin"><span lang="en-GB"><font face="Thorndale">do3d_at_begin</font></span></a>
[48]7855has to be used if an additional output is wanted at the start of a run <span lang="en-GB"><font face="Thorndale">(thus at
7856the time t = 0 or at the
[5]7857respective starting times of restart runs).</font></span> </p>
[108]7858
7859
7860
[354]7861
7862
[108]7863      </td>
7864
7865
[354]7866
7867
[108]7868 </tr>
7869
7870
[354]7871
7872
[108]7873 <tr>
7874
7875
[354]7876
7877
[108]7878      <td style="vertical-align: top;"><a name="dt_max"></a><span style="font-weight: bold;">dt_max</span></td>
7879
7880
[354]7881
7882
[108]7883      <td style="vertical-align: top;">R</td>
7884
7885
[354]7886
7887
[108]7888      <td style="vertical-align: top;"><span style="font-style: italic;">20.0</span></td>
7889
7890
[354]7891
7892
[108]7893      <td>Maximum
7894allowed value of the timestep (in s).<br>
7895
7896
[354]7897
7898
[108]7899      <br>
7900
7901
[354]7902
7903
[108]7904By default,
[61]7905the maximum timestep is restricted to be 20 s. This might be o.k. for
7906simulations of any kind of atmospheric turbulence but may have to be
[108]7907changed for other situations.</td>
7908
7909
[354]7910
7911
[108]7912    </tr>
7913
7914
[354]7915
7916
[108]7917    <tr>
7918
7919
[354]7920
7921
[108]7922 <td style="vertical-align: top;"> 
7923     
7924     
[354]7925     
7926     
[108]7927      <p><a name="dt_restart"></a><b>dt_restart</b></p>
7928
7929
7930
[354]7931
7932
[108]7933      </td>
7934
7935
[354]7936
7937
[108]7938 <td style="vertical-align: top;">R</td>
7939
7940
7941
[354]7942
7943
[108]7944      <td style="vertical-align: top;"><i>9999999.9</i></td>
7945
7946
7947
[354]7948
7949
[108]7950      <td style="vertical-align: top;"> 
7951     
7952     
[354]7953     
7954     
[108]7955      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]7956interval</font> at which a new
[108]7957restart run is to be carried out (</font>in <font face="Thorndale">s). </font> </p>
7958
7959
[354]7960
7961
[108]7962 
7963     
7964     
[354]7965     
7966     
[108]7967      <p><span lang="en-GB"><font face="Thorndale">For a
[48]7968description
[5]7969how to assign restart times manually see run time parameter </font></span><a href="#restart_time"><span lang="en-GB"><font face="Thorndale">restart_time</font></span></a><span lang="en-GB"><font face="Thorndale">. <span style="font-weight: bold;">dt_restart</span>
7970does not show any effect, if <span style="font-weight: bold;">restart_time</span>
[108]7971has not been set.</font></span></p>
7972
[354]7973
7974
[108]7975     
[354]7976     
7977     
[108]7978      <p>For <a href="chapter_3.8.html">coupled runs</a> this parameter must be&nbsp;equal in both parameter files <a href="chapter_3.4.html#PARIN"><font style="font-size: 10pt;" size="2"><span style="font-family: mon;"></span>PARIN</font></a>
7979and&nbsp;<a href="chapter_3.4.html#PARIN"><font style="font-size: 10pt;" size="2">PARIN_O</font></a>.</p>
7980
7981
[354]7982
7983
[108]7984 </td>
7985
7986
[354]7987
7988
[108]7989 </tr>
7990
7991
7992
[354]7993
7994
[108]7995    <tr>
7996
7997
[354]7998
7999
[108]8000 <td style="vertical-align: top;"> 
8001     
8002     
[354]8003     
8004     
[108]8005      <p><a name="dt_run_control"></a><b>dt_run_control</b></p>
8006
8007
8008
[354]8009
8010
[108]8011      </td>
8012
8013
[354]8014
8015
[108]8016 <td style="vertical-align: top;">R</td>
8017
8018
8019
[354]8020
8021
[108]8022      <td style="vertical-align: top;"><i>60.0</i></td>
8023
8024
8025
[354]8026
8027
[108]8028      <td style="vertical-align: top;"> 
8029     
8030     
[354]8031     
8032     
[108]8033      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]8034interval</font> at which run control
8035output is to be made (</font>in <font face="Thorndale">s).&nbsp;
[108]8036      </font> </p>
8037
8038
[354]8039
8040
[108]8041 
8042     
8043     
[354]8044     
8045     
[108]8046      <p><span lang="en-GB"><font face="Thorndale">Run control
[48]8047information is output to the local ASCII-file </font></span><a href="chapter_3.4.html#RUN_CONTROL"><span lang="en-GB"><font face="Thorndale">RUN_CONTROL</font></span></a><span lang="en-GB"><font face="Thorndale">. At each
8048output time, one line
[5]8049with information about the size of the time step, maximum speeds, total
8050kinetic energy etc. is written to this file. Reference time is the
8051beginning of the simulation, i.e. output takes place at times t = <b>dt_run_control</b>,
[48]80522*<b>dt_run_control</b>, 3*<b>dt_run_control</b>,
8053etc., and always at
[5]8054the beginning of a model run (thus at the time t = 0 or at the
8055respective starting times of restart runs). The actual output times can
8056deviate from these theoretical values (see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">).<br>
[108]8057
8058
8059
[354]8060
8061
[108]8062      </font></span></p>
8063
8064
[354]8065
8066
[108]8067 
8068     
8069     
[354]8070     
8071     
[108]8072      <p><span lang="en-GB"><font face="Thorndale">Run control
[5]8073information is output after each time step can be achieved via <b>dt_run_control</b>
[108]8074= <i>0.0</i>.</font></span> </p>
8075
8076
[354]8077
8078
[108]8079 </td>
8080
8081
8082
[354]8083
8084
[108]8085    </tr>
8086
8087
[354]8088
8089
[108]8090 <tr>
8091
8092
[354]8093
8094
[108]8095 <td style="vertical-align: top;">
8096     
8097     
[354]8098     
8099     
[108]8100      <p><a name="end_time"></a><b>end_time</b></p>
8101
8102
8103
[354]8104
8105
[108]8106      </td>
8107
8108
[354]8109
8110
[108]8111 <td style="vertical-align: top;">R</td>
8112
8113
8114
[354]8115
8116
[108]8117      <td style="vertical-align: top;"><i>0.0</i></td>
8118
8119
8120
[354]8121
8122
[108]8123      <td style="vertical-align: top;"> 
8124     
8125     
[354]8126     
8127     
[108]8128      <p lang="en-GB"><font face="Thorndale">Simulation time of the 3D
[48]8129model (</font>in <font face="Thorndale">s).&nbsp;
[108]8130      </font> </p>
8131
8132
[354]8133
8134
[108]8135 
8136     
8137     
[354]8138     
8139     
[108]8140      <p><span lang="en-GB"><font face="Thorndale">The simulation time
[5]8141is starting from the beginning of the initialization run (t = 0), not
[108]8142starting from the beginning of the respective restart run.</font></span></p>
8143
[354]8144
8145
[108]8146     
[354]8147     
8148     
[108]8149      <p>For <a href="chapter_3.8.html">coupled runs</a> this parameter must be&nbsp;equal in both parameter files <a href="chapter_3.4.html#PARIN"><font style="font-size: 10pt;" size="2"><span style="font-family: mon;"></span>PARIN</font></a>
8150and&nbsp;<a href="chapter_3.4.html#PARIN"><font style="font-size: 10pt;" size="2">PARIN_O</font></a>.</p>
8151
8152
[354]8153
8154
[108]8155 </td>
8156
8157
[354]8158
8159
[108]8160 </tr>
8161
8162
[354]8163
8164
[108]8165 <tr>
8166
8167
[354]8168
8169
[108]8170 <td style="vertical-align: top;"> 
8171     
8172     
[354]8173     
8174     
[108]8175      <p><a name="force_print_header"></a><b>force_print_header</b></p>
8176
8177
8178
[354]8179
8180
[108]8181      </td>
8182
8183
[354]8184
8185
[108]8186 <td style="vertical-align: top;">L</td>
8187
8188
8189
[354]8190
8191
[108]8192      <td style="vertical-align: top;"><i>.F.</i></td>
8193
8194
8195
[354]8196
8197
[108]8198      <td style="vertical-align: top;"> 
8199     
8200     
[354]8201     
8202     
[108]8203      <p>Steering of
[48]8204header output to the local file <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a>.&nbsp;
[108]8205      </p>
8206
8207
[354]8208
8209
[108]8210 
8211     
8212     
[354]8213     
8214     
[108]8215      <p>By default, informations about the model
[48]8216parameters in use are
[5]8217output to the beginning of file RUN_CONTROL for initial runs only
8218(these informations are identical to that which are output to the local
8219file <a href="chapter_3.4.html#HEADER">HEADER</a>).
[48]8220With <b>force_print_header</b> = <i>.T.</i>,
8221these informations are
[5]8222also output to <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a>
[108]8223at restart runs.</p>
8224
8225
[354]8226
8227
[108]8228 </td>
8229
8230
[354]8231
8232
[108]8233 </tr>
8234
8235
[354]8236
8237
[108]8238 <tr>
8239
8240
[354]8241
8242
[108]8243 <td style="vertical-align: top;"> 
8244     
8245     
[354]8246     
8247     
[108]8248      <p><a name="mg_cycles"></a><b>mg_cycles</b></p>
8249
8250
8251
[354]8252
8253
[108]8254      </td>
8255
8256
[354]8257
8258
[108]8259 <td style="vertical-align: top;">I</td>
8260
8261
8262
[354]8263
8264
[108]8265      <td style="vertical-align: top;"><i>-1</i></td>
8266
8267
8268
[354]8269
8270
[108]8271      <td style="vertical-align: top;"> 
8272     
8273     
[354]8274     
8275     
[108]8276      <p>Number of
8277cycles to be used with the multi-grid scheme.<br>
8278
8279
[354]8280
8281
[108]8282 <br>
8283
8284
8285
[354]8286
8287
[5]8288This parameter determines the number of cycles to be carried out in the
8289multi-grid method used for solving the Poisson equation for
8290perturbation pressure (see <a href="#psolver">psolver</a>).
8291The type of the cycles can be set with <a href="#cycle_mg">cycle_mg</a>.<br>
[108]8292
8293
8294
[354]8295
8296
[108]8297      </p>
8298
8299
[354]8300
8301
[108]8302 <br>
8303
8304
[354]8305
8306
[108]8307By default (<b>mg_cyles</b> = <i>-
[61]83081</i>), the
[48]8309number of cycles
[5]8310depends on the requested accuracy of the scheme (see <a href="#residual_limit">residual_limit</a>)
8311and may vary from time step to time step. In this case, the CPU time
8312for a run will be difficult to estimate, since it heavily depends on
[108]8313the total number of the cycles to be carried out.<br>
8314
8315
[354]8316
8317
[108]8318 <br>
8319
8320
8321
[354]8322
8323
[48]8324By assigning <b>mg_cycles</b> a value (&gt;=<span style="font-style: italic;">1</span>), the number of
8325cycles can be
[108]8326fixed so that the CPU time can be clearly estimated. <br>
8327
8328
[354]8329
8330
[108]8331 <br>
8332
8333
8334
[354]8335
8336
[108]8337      <b>Note:</b> When using a fixed number of cycles, the user
[48]8338must
[5]8339examine the local file <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a>
8340regularly to check whether the divergence of the velocity field is
8341sufficiently reduced by the pressure solver. It should be reduced at
8342least by two orders of magnitude. For cyclic boundary conditions along
8343both horizontal directions (see <a href="chapter_4.1.html#bc_lr">bc_lr</a>
[48]8344and <a href="chapter_4.1.html#bc_ns">bc_ns</a>) <span style="font-weight: bold;">mg_cycles</span> = <span style="font-style: italic;">2</span> is typically a
8345good choice, for
[5]8346non-cyclic lateral boundary conditions <span style="font-weight: bold;">mg_cycles</span>
[48]8347= <span style="font-style: italic;">4</span> may be
[108]8348sufficient.</td>
8349
8350
[354]8351
8352
[108]8353 </tr>
8354
8355
[354]8356
8357
[108]8358 <tr>
8359
8360
[354]8361
8362
[108]8363 <td style="vertical-align: top;"><a name="mg_switch_to_pe0_level"></a><b>mg_switch_to_pe0_<br>
8364
8365
8366
[354]8367
8368
[108]8369level</b></td>
8370
8371
[354]8372
8373
[108]8374 <td style="vertical-align: top;">I</td>
8375
8376
8377
[354]8378
8379
[108]8380      <td style="vertical-align: top;"><br>
8381
8382
[354]8383
8384
[108]8385 </td>
8386
8387
[354]8388
8389
[108]8390 <td style="vertical-align: top;">Grid
8391level at which data shall be gathered on PE0.<br>
8392
8393
[354]8394
8395
[108]8396 <br>
8397
8398
8399
[354]8400
8401
[5]8402In case of a run using several PEs and the multigrid method for solving
8403the Poisson equation for perturbation pressure (see <a href="#psolver">psolver</a>),
8404the value of this parameter defines on which grid level the data are
8405gathered on PE0 in order to allow for a further coarsening of the grid.
8406The finest grid defines the largest grid level. By default, the
8407gathering level is determined automatically and displayed in file <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a>.
8408It is only possible to gather data from a level larger than the one
8409determined automatically. A test run may be neccessary to determine
[354]8410this level.<br>
[108]8411
[354]8412      <br>
[108]8413
[354]8414Setting of <span style="font-weight: bold;">mg_switch_to_pe0_level</span> = <span style="font-style: italic;">-1</span> prevents that data are collected on PE0 at all, i.e. coarsening of grids is limited by the subdomains.</td>
8415
8416
8417
8418
[108]8419 </tr>
8420
8421
[354]8422
8423
[108]8424 <tr>
[493]8425      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="netcdf_data_format"></a>netcdf_data_format</span><br>
[108]8426      </td>
[493]8427      <td style="vertical-align: top;">I<br>
8428      </td>
8429      <td style="vertical-align: top;"><span style="font-style: italic;">2</span><br>
8430      </td>
8431      <td style="vertical-align: top;">Data format for NetCDF files.<br>
[108]8432      <br>
[493]8433This variable defines the format of the NetCDF files. Following values are allowed:<br>
[108]8434      <br>
[493]8435      <table style="text-align: left; width: 100%;" border="0" cellpadding="2" cellspacing="2">
8436        <tbody>
8437          <tr>
8438            <td style="vertical-align: top;"><span style="font-style: italic;">1</span><br>
8439            </td>
8440            <td style="vertical-align: top;">NetCDF classic format (filesize limited to 2GB)<br>
8441            </td>
8442          </tr>
8443          <tr>
8444            <td style="vertical-align: top;"><span style="font-style: italic;">2</span><br>
8445            </td>
8446            <td style="vertical-align: top;">NetCDF 64-bit-offset format (large file support, but single variable still limited to 2GB)<br>
8447            </td>
8448          </tr>
8449          <tr>
8450            <td style="vertical-align: top;"><span style="font-style: italic;">3</span><br>
8451            </td>
8452            <td style="vertical-align: top;">NetCDF-4 (HDF5) format (files can be as large as file system supports; unlimited variable size; allows parallel I/O)<br>
8453            </td>
8454          </tr>
8455          <tr>
8456            <td style="vertical-align: top;"><span style="font-style: italic;">4</span><br>
8457            </td>
8458            <td style="vertical-align: top;">NetCDF-4 format, but with NF90_CLASSIC_MODEL bit set (some new features of NetCDF4 are not available)<br>
8459            </td>
8460          </tr>
8461        </tbody>
8462      </table>
[108]8463      <br>
[493]8464      <span style="font-weight: bold;">Important:</span><br>
8465Setting <span style="font-weight: bold;">netcdf_data_format </span>&gt; <span style="font-style: italic;">2 </span>requires a NetCDF4 library (set <span style="font-family: Courier New,Courier,monospace;">-I</span>, <span style="font-family: Courier New,Courier,monospace;">-L</span>, and<span style="font-family: Courier New,Courier,monospace;"> -l </span>options for compiling and linking appropriately in configuration file). Also, preprocessor switch <span style="font-family: Courier New,Courier,monospace;">__netcdf4 </span>has to be set (see line starting with <span style="font-family: Courier New,Courier,monospace;">%cpp_opts </span>in the configuration file).<br>
8466      <br>
8467Files with NetCDF4 format cannot be read with NetCDF3 libraries.<br>
[108]8468      </td>
[493]8469    </tr>
[108]8470
8471
[354]8472
8473
[108]8474
[493]8475   
[108]8476
[354]8477
8478
[108]8479
8480    <tr>
8481
8482
8483
[354]8484
8485
[108]8486      <td style="vertical-align: top;"> 
8487     
8488     
[354]8489     
8490     
[108]8491      <p><a name="ngsrb"></a><b>ngsrb</b></p>
8492
8493
[354]8494
8495
[108]8496 </td>
8497
8498
8499
[354]8500
8501
[108]8502      <td style="vertical-align: top;">I</td>
8503
8504
[354]8505
8506
[108]8507 <td style="vertical-align: top;"><i>2</i></td>
8508
8509
8510
[354]8511
8512
[108]8513      <td style="vertical-align: top;">Grid
8514level at which data shall be gathered on PE0.<br>
8515
8516
[354]8517
8518
[108]8519 <br>
8520
8521
8522
[354]8523
8524
[5]8525In case of a run using several PEs and the multigrid method for solving
8526the Poisson equation for perturbation pressure (see <a href="#psolver">psolver</a>),
8527the value of this parameter defines on which grid level the data are
8528gathered on PE0 in order to allow for a further coarsening of the grid.
8529The finest grid defines the largest grid level. By default, the
8530gathering level is determined automatically and displayed in file <a href="chapter_3.4.html#RUN_CONTROL">RUN_CONTROL</a>.
8531It is only possible to gather data from a level larger than the one
8532determined automatically. A test run may be neccessary to determine
[108]8533this level.</td>
8534
8535
[354]8536
8537
[108]8538 </tr>
8539
8540
[354]8541
8542
[108]8543 <tr>
8544
8545
[354]8546
8547
[108]8548 <td style="vertical-align: top;"> 
8549     
8550     
[354]8551     
8552     
[108]8553      <p><a name="normalizing_region"></a><b>normalizing_region</b></p>
8554
8555
8556
[354]8557
8558
[108]8559      </td>
8560
8561
[354]8562
8563
[108]8564 <td style="vertical-align: top;">I</td>
8565
8566
8567
[354]8568
8569
[108]8570      <td style="vertical-align: top;"><span style="font-style: italic;">0</span><br>
8571
8572
[354]8573
8574
[108]8575 </td>
8576
8577
8578
[354]8579
8580
[108]8581      <td style="vertical-align: top;"> 
8582     
8583     
[354]8584     
8585     
[108]8586      <p>Determines the
[48]8587subdomain from which the normalization
[108]8588quantities are calculated.&nbsp; </p>
8589
8590
[354]8591
8592
[108]8593 
8594     
8595     
[354]8596     
8597     
[108]8598      <p>If output
[48]8599data of the horizontally averaged vertical profiles
[5]8600(see <a href="#data_output_pr">data_output_pr</a>)
8601is to be normalized (see <a href="#cross_normalized_x">cross_normalized_x</a>,
[108]8602      <a href="#cross_normalized_y">cross_normalized_y</a>),
[5]8603the respective normalization quantities are by default calculated from
8604the averaged data of the total model domain (<b>normalizing_region</b>
[48]8605= <i>0</i>) and are thus representative for the total
8606domain. Instead
[5]8607of that, normalization quantities can also be calculated for a
[48]8608subdomain. The wanted subdomain can be given with the parameter <span style="font-weight: bold;">normalizing_region</span>,
8609where <i>1</i>
8610&lt;= <b>normalizing_region</b> &lt;= <i>9 </i>must
8611hold. These
[5]8612quantities are then used for normalizing of all profiles (even for that
[108]8613of the total domain).</p>
8614
8615
[354]8616
8617
[108]8618 </td>
8619
8620
[354]8621
8622
[108]8623 </tr>
8624
8625
[354]8626
8627
8628 <tr>
8629
8630      <td style="vertical-align: top;"><a href="npex"><span style="font-weight: bold;"></span></a><span style="font-weight: bold;"><a name="npex"></a>npex</span></td>
8631
8632      <td style="vertical-align: top;">I</td>
8633
[493]8634      <td style="vertical-align: top;"><br>
8635</td>
[354]8636
8637      <td style="vertical-align: top;">
8638     
8639      <p>Number of processors
[197]8640along x-direction of the virtual
8641processor
8642net.&nbsp; </p>
[108]8643
8644
[197]8645
8646
8647
8648
[354]8649
8650
[197]8651 
8652     
8653     
8654     
8655     
8656     
8657     
[354]8658     
8659     
[197]8660      <p>For parallel runs, the total
8661number of processors to be used
8662is given by
8663the <span style="font-weight: bold;">mrun</span>
8664option <a href="http://www.muk.uni-hannover.de/software/mrun_beschreibung.html#Opt-X">-X</a>.
8665By default, depending on the type of the parallel computer, PALM
8666generates a 1d processor
8667net (domain decomposition along x, <span style="font-weight: bold;">npey</span>
8668= <span style="font-style: italic;">1</span>) or a
86692d-net (this is
8670favored on machines with fast communication network and/or large number of processors (&gt;256)). In case of a
86712d-net, it is tried to make it more or less square-shaped. If, for
8672example, 16 processors are assigned (-X 16), a 4 * 4 processor net is
8673generated (<span style="font-weight: bold;">npex</span>
8674= <span style="font-style: italic;">4</span>, <span style="font-weight: bold;">npey</span>
8675= <span style="font-style: italic;">4</span>).
8676This choice is optimal for square total domains (<a href="chapter_4.1.html#nx">nx</a>
8677= <a href="chapter_4.1.html#ny">ny</a>),
8678since then the number of ghost points at the lateral boundarys of
8679the subdomains reaches a minimum. If <span style="font-weight: bold;">nx</span>
8680and <span style="font-weight: bold;">ny</span>
8681differ extremely, the
8682processor net should be manually adjusted using adequate values for <span style="font-weight: bold;">npex</span> and <span style="font-weight: bold;">npey</span>.&nbsp; </p>
8683
8684
8685
8686
8687
8688
8689
[354]8690
8691
[197]8692     
8693     
8694     
8695     
8696     
8697     
[354]8698     
8699     
[197]8700      <p><b>Important:</b> The value of <span style="font-weight: bold;">npex</span> * <span style="font-weight: bold;">npey</span> must exactly match the
8701value assigned by the <span style="font-weight: bold;">mrun</span>-option
8702      <tt>-X</tt>.
8703Otherwise the model run will abort with a corresponding error
8704message.&nbsp; <br>
8705
8706
8707
8708
8709
8710
8711
[354]8712
8713
[197]8714Additionally, the specification of <span style="font-weight: bold;">npex</span>
8715and <span style="font-weight: bold;">npey</span>
8716may of course
8717override the default setting for the domain decomposition (1d or 2d)
8718which may have a significant (negative) effect on the code performance.
[354]8719      </p>
8720
8721      </td>
8722
8723    </tr>
8724
8725    <tr>
8726
8727      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="npey"></a>npey</span></td>
8728
8729      <td style="vertical-align: top;">I</td>
8730
[493]8731      <td style="vertical-align: top;"><br>
8732</td>
[354]8733
8734      <td style="vertical-align: top;">
8735     
8736      <p>Number of processors
[197]8737along y-direction of the virtual
8738processor
8739net.&nbsp; </p>
8740
8741
8742
8743
8744
8745
[354]8746
8747
[197]8748 
8749     
8750     
8751     
8752     
8753     
8754     
[354]8755     
8756     
8757      <p>For further information see <a href="chapter_4.2.html#npex">npex</a>.</p>
[197]8758
[354]8759      </td>
[197]8760
[354]8761    </tr>
8762
8763    <tr>
8764
8765
8766
8767
[108]8768 <td style="vertical-align: top;"> 
8769     
8770     
[354]8771     
8772     
[108]8773      <p><a name="nsor"></a><b>nsor</b></p>
8774
8775
8776
[354]8777
8778
[108]8779      </td>
8780
8781
[354]8782
8783
[108]8784 <td style="vertical-align: top;">I</td>
8785
8786
8787
[354]8788
8789
[108]8790      <td style="vertical-align: top;"><i>20</i></td>
8791
8792
8793
[354]8794
8795
[108]8796      <td style="vertical-align: top;"> 
8797     
8798     
[354]8799     
8800     
[108]8801      <p>Number of
8802iterations to be used with the SOR-scheme.&nbsp; </p>
8803
8804
[354]8805
8806
[108]8807 
8808     
8809     
[354]8810     
8811     
[108]8812      <p>This
[48]8813parameter is only effective if the SOR-scheme is selected
[5]8814as pressure solver (<a href="#psolver">psolver</a>
[48]8815= <span style="font-style: italic;">'sor'</span>).
8816The number of
[5]8817iterations necessary for a sufficient convergence of the scheme depends
8818on the grid point numbers and is to be determined by appropriate test
8819runs (the default value will not at all be sufficient for larger grid
8820point numbers). The number of iterations used for the first call of the
8821SOR-scheme (t = 0) is determined via the parameter <a href="chapter_4.1.html#nsor_ini">nsor_ini</a>.</p>
[108]8822
8823
8824
[354]8825
8826
[108]8827      </td>
8828
8829
[354]8830
8831
[108]8832 </tr>
8833
8834
[354]8835
8836
[108]8837 <tr>
8838
8839
[354]8840
8841
[108]8842 <td style="vertical-align: top;"> 
8843     
8844     
[354]8845     
8846     
[108]8847      <p><a name="nz_do3d"></a><b>nz_do3d</b></p>
8848
8849
8850
[354]8851
8852
[108]8853      </td>
8854
8855
[354]8856
8857
[108]8858 <td style="vertical-align: top;">I</td>
8859
8860
8861
[354]8862
8863
[108]8864      <td style="vertical-align: top;"><i>nz+1</i></td>
8865
8866
8867
[354]8868
8869
[108]8870      <td style="vertical-align: top;"> Limits the output of 3d
8871volume data along the vertical direction (grid point index k).<br>
8872
8873
[354]8874
8875
[108]8876      <br>
8877
8878
[354]8879
8880
[108]8881By
[48]8882default, data for all grid points along z are output. The parameter <span style="font-weight: bold;">nz_do3d</span>
[5]8883can be used to limit the output up to a certain vertical grid point
8884(e.g. in order to reduce the amount of output data). It affects all
[48]8885output of volume data ("normal" output to file, see <a href="#data_output">data_output</a>, as well as output
8886for <span style="font-weight: bold;">dvrp</span>-software,
8887see <a href="#mode_dvrp">mode_dvrp</a>).</td>
[108]8888
8889
8890
[354]8891
8892
[108]8893    </tr>
8894
8895
[354]8896
8897
[108]8898 <tr>
8899
8900
[354]8901
8902
[108]8903 <td style="vertical-align: top;">
8904     
8905     
[354]8906     
8907     
[108]8908      <p><a name="omega_sor"></a><b>omega_sor</b></p>
8909
8910
8911
[354]8912
8913
[108]8914      </td>
8915
8916
[354]8917
8918
[108]8919 <td style="vertical-align: top;">R</td>
8920
8921
8922
[354]8923
8924
[108]8925      <td style="vertical-align: top;"><i>1.8</i></td>
8926
8927
8928
[354]8929
8930
[108]8931      <td style="vertical-align: top;"> 
8932     
8933     
[354]8934     
8935     
[108]8936      <p>Convergence
8937factor to be used with the the SOR-scheme.&nbsp; </p>
8938
8939
[354]8940
8941
[108]8942 
8943     
8944     
[354]8945     
8946     
[108]8947      <p>If
[48]8948the SOR-scheme is selected (<a href="#psolver">psolver</a>
8949= <span style="font-style: italic;">'sor'</span>),
8950this parameter
8951determines the value of the convergence factor, where <i>1.0</i>
8952&lt;= <b>omega_sor</b> &lt; <i>2.0 </i>.
8953The optimum value of <b>omega_sor</b>
[5]8954depends on the number of grid points along the different directions in
8955space. For non-equidistant grids it can only be determined by
[108]8956appropriate test runs.</p>
8957
8958
[354]8959
8960
[108]8961 </td>
8962
8963
[354]8964
8965
[108]8966 </tr>
8967
8968
[354]8969
8970
[108]8971 <tr>
8972
8973
[354]8974
8975
[108]8976 <td style="vertical-align: top;"> 
8977     
8978     
[354]8979     
8980     
[108]8981      <p><a name="prandtl_number"></a><b>prandtl_number</b></p>
8982
8983
8984
[354]8985
8986
[108]8987      </td>
8988
8989
[354]8990
8991
[108]8992 <td style="vertical-align: top;">R</td>
8993
8994
8995
[354]8996
8997
[108]8998      <td style="vertical-align: top;"><i>1.0</i></td>
8999
9000
9001
[354]9002
9003
[108]9004      <td style="vertical-align: top;"> 
9005     
9006     
[354]9007     
9008     
[108]9009      <p>Ratio of the
[48]9010eddy diffusivities for momentum and heat (K<sub>m</sub>/K<sub>h</sub>).&nbsp;
[108]9011      </p>
9012
9013
[354]9014
9015
[108]9016 
9017     
9018     
[354]9019     
9020     
[108]9021      <p>For runs with constant eddy diffusivity (see <a href="chapter_4.1.html#km_constant">km_constant</a>),
[5]9022this parameter can be used to assign the Prandtl number (ratio K<sub>m</sub>
[108]9023/ K<sub>h</sub>).</p>
9024
9025
[354]9026
9027
[108]9028 </td>
9029
9030
[354]9031
9032
[108]9033 </tr>
9034
9035
[354]9036
9037
[108]9038 <tr>
9039
9040
[354]9041
9042
[108]9043      <td style="vertical-align: top;"><a name="precipitation_amount_interval"></a><span style="font-weight: bold;">precipitation_amount_</span><br style="font-weight: bold;">
9044
9045
[354]9046
9047
[108]9048      <span style="font-weight: bold;">interval</span></td>
9049
9050
[354]9051
9052
[108]9053      <td style="vertical-align: top;">R</td>
9054
9055
[354]9056
9057
[108]9058      <td style="vertical-align: top;"><i>value of
9059&nbsp;<a href="chapter_4.2.html#dt_do2d_xy">dt_do2d_<br>
9060
9061
[354]9062
9063
[108]9064xy</a></i></td>
9065
9066
[354]9067
9068
[108]9069      <td style="vertical-align: top;">
9070     
9071     
[354]9072     
9073     
[108]9074      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[72]9075interval</font> for which the precipitation amount (in mm) shall be calculated and output (</font>in <font face="Thorndale">s).&nbsp;
[108]9076      </font> </p>
9077
9078
[354]9079
9080
[108]9081 
9082     
9083     
[354]9084     
9085     
[108]9086      <p><span lang="en-GB"></span><a href="chapter_4.2.html#data_output"><span lang="en-GB"></span></a><span lang="en-GB"></span><a href="chapter_4.2.html#section_xy"><span lang="en-GB"></span></a><span lang="en-GB"><font face="Thorndale">This
[72]9087parameter requires <a href="chapter_4.1.html#precipitation">precipitation</a> = <span style="font-style: italic;">.TRUE.</span>.&nbsp;</font></span><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale"><span style="font-weight: bold;"></span><span style="font-weight: bold;"></span>The interval must be smaller or equal than the output interval for 2d horizontal cross sections given by </font></span><a href="chapter_4.2.html#dt_do2d_xy"><span lang="en-GB"><font face="Thorndale">dt_do2d_xy</font></span></a><span lang="en-GB"><font face="Thorndale">). The output of the precipitation amount also requires setting of <a href="chapter_4.2.html#data_output">data_output</a> =<span style="font-style: italic;"> 'pra*'</span>.<br>
[108]9088
9089
9090
[354]9091
9092
[108]9093      </font></span></p>
9094
9095
[354]9096
9097
[108]9098 <span lang="en-GB"></span></td>
9099
9100
[354]9101
9102
[108]9103    </tr>
9104
9105
[354]9106
9107
[108]9108    <tr>
9109
9110
9111
[354]9112
9113
[108]9114      <td style="vertical-align: top;"> 
9115     
9116     
[354]9117     
9118     
[108]9119      <p><a name="profile_columns"></a><b>profile_columns</b></p>
9120
9121
9122
[354]9123
9124
[108]9125      </td>
9126
9127
[354]9128
9129
[108]9130 <td style="vertical-align: top;">I</td>
9131
9132
9133
[354]9134
9135
[108]9136      <td style="vertical-align: top;"><i>3</i></td>
9137
9138
9139
[354]9140
9141
[108]9142      <td style="vertical-align: top;"> 
9143     
9144     
[354]9145     
9146     
[108]9147      <p>Number of
[48]9148coordinate systems to be plotted<span style="font-weight: bold;"></span>
9149in one row by <span style="font-weight: bold;">profil</span>.&nbsp;
[108]9150      </p>
9151
9152
[354]9153
9154
[108]9155 
9156     
9157     
[354]9158     
9159     
[108]9160      <p>This parameter only applies for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
9161= <span style="font-style: italic;">'profil'</span>.</p>
9162
9163
[354]9164
9165
[108]9166     
9167     
[354]9168     
9169     
[108]9170      <p>It
[48]9171determines the layout of plots of
[5]9172horizontally averaged profiles (<a href="#data_output_pr">data_output_pr</a>)
9173when plotted with the plot software <span style="font-weight: bold;">profil</span>.
9174Generally, the number and sequence of coordinate systems (panels) to be
9175plotted on one page are
[48]9176determined by <a href="#cross_profiles">cross_profiles</a>.
[108]9177      <b>profile_columns</b>
[5]9178determines how many panels are to be
9179arranged next to each other in one row (number of columns). The
9180respective number of rows on a page is assigned by <a href="#profile_rows">profile_rows</a>.
9181According to their order given by <a href="#data_output_pr">data_output_pr</a>,
9182the panels are arranged beginning in the top row from left to right and
[48]9183then continued in the following row. If the number of panels cranz
9184&gt; <b>profile_columns</b> * <b>profile_rows</b>,
9185the remaining
[5]9186panels are drawn on an additional page. If cranz &lt; <b>profile_columns</b>,
[48]9187then <b>profile_columns</b> = cranz is automatically set.
9188If
[5]9189row&nbsp; contains any panel, then the value of <b>profile_rows</b>
[108]9190is reduced automatically.</p>
9191
9192
[354]9193
9194
[108]9195 </td>
9196
9197
[354]9198
9199
[108]9200 </tr>
9201
9202
[354]9203
9204
[108]9205 <tr>
9206
9207
9208
[354]9209
9210
[108]9211      <td style="vertical-align: top;"> 
9212     
9213     
[354]9214     
9215     
[108]9216      <p><a name="profile_rows"></a><b>profile_rows</b></p>
9217
9218
9219
[354]9220
9221
[108]9222      </td>
9223
9224
[354]9225
9226
[108]9227 <td style="vertical-align: top;">I</td>
9228
9229
9230
[354]9231
9232
[108]9233      <td style="vertical-align: top;"><i>2</i></td>
9234
9235
9236
[354]9237
9238
[108]9239      <td style="vertical-align: top;"> 
9240     
9241     
[354]9242     
9243     
[108]9244      <p>Number of rows
[48]9245of coordinate systems to be plotted on one page
9246by <span style="font-weight: bold;">profil</span>.&nbsp;
[108]9247      </p>
9248
9249
[354]9250
9251
[108]9252 
9253     
9254     
[354]9255     
9256     
[108]9257      <p>This parameter only applies for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
9258= <span style="font-style: italic;">'profil'</span>.</p>
9259
9260
[354]9261
9262
[108]9263     
9264     
[354]9265     
9266     
[108]9267      <p>It
[48]9268determines the layout of plots of horizontally averaged
[5]9269profiles. See <a href="#profile_columns">profile_columns</a>.</p>
[108]9270
9271
9272
[354]9273
9274
[108]9275      </td>
9276
9277
[354]9278
9279
[108]9280 </tr>
9281
9282
[354]9283
9284
[108]9285 <tr>
9286
9287
[354]9288
9289
[108]9290 <td style="vertical-align: top;"> 
9291     
9292     
[354]9293     
9294     
[108]9295      <p><a name="psolver"></a><b>psolver</b></p>
9296
9297
9298
[354]9299
9300
[108]9301      </td>
9302
9303
[354]9304
9305
[108]9306 <td style="vertical-align: top;">C * 10</td>
9307
9308
9309
[354]9310
9311
[108]9312      <td style="vertical-align: top;"><i>'poisfft'</i></td>
9313
9314
9315
[354]9316
9317
[108]9318      <td style="vertical-align: top;"> 
9319     
9320     
[354]9321     
9322     
[108]9323      <p>Scheme to be
[48]9324used to solve the Poisson equation for the
[108]9325perturbation pressure.&nbsp; </p>
9326
9327
[354]9328
9329
[108]9330 <br>
9331
9332
9333
[354]9334
9335
[108]9336The user can choose between the following schemes:<br>
9337
9338
[354]9339
9340
[108]9341 
9342     
9343     
[354]9344     
9345     
[108]9346      <table style="text-align: left; width: 100%;" cellpadding="2" cellspacing="2">
9347
9348
[354]9349
9350
[108]9351 <tbody>
9352
9353
[354]9354
9355
[108]9356 <tr>
9357
9358
[354]9359
9360
[108]9361 <td style="vertical-align: top;"><i>poisfft</i></td>
9362
9363
9364
[354]9365
9366
[108]9367            <td style="vertical-align: top;">Direct method using FFT
[5]9368along x and y, solution of a
9369tridiagonal matrix along z, and backward
9370FFT (see Siano, institute reports, volume 54). The FFT routines to be
9371used can be determined via the initialization parameter <a href="chapter_4.1.html#fft_method">fft_method</a>.<br>
[108]9372
9373
9374
[354]9375
9376
[5]9377This solver is specially optimized for 1d domain decompositions.
9378Vectorization is optimized for domain decompositions along x only.</td>
[108]9379
9380
9381
[354]9382
9383
[108]9384          </tr>
9385
9386
[354]9387
9388
[108]9389 <tr>
9390
9391
[354]9392
9393
[108]9394 <td style="vertical-align: top;">
9395           
9396           
[354]9397           
9398           
[108]9399            <p><i>poisfft_</i>
9400            <br>
9401
9402
[354]9403
9404
[108]9405 <i>hybrid</i></p>
9406
9407
9408
[354]9409
9410
[108]9411            </td>
9412
9413
[354]9414
9415
[108]9416 <td style="vertical-align: top;">Direct
[48]9417method using FFT
[5]9418along x and y, solution of a
9419tridiagonal matrix along z, and backward
9420FFT (see Siano, institute reports, volume 54). The FFT routines to be
9421used can be determined via the initialization parameter <a href="chapter_4.1.html#fft_method">fft_method</a>.<br>
[108]9422
9423
9424
[354]9425
9426
[5]9427This solver is specially optimized for 1d domain decompositions.
9428Vectorization is optimized for domain decompositions along x only.</td>
[108]9429
9430
9431
[354]9432
9433
[108]9434          </tr>
9435
9436
[354]9437
9438
[108]9439 <tr>
9440
9441
[354]9442
9443
[108]9444 <td style="vertical-align: top;"><i>multigrid</i></td>
9445
9446
9447
[354]9448
9449
[108]9450            <td style="vertical-align: top;"> 
9451           
9452           
[354]9453           
9454           
[108]9455            <p>Multi-grid
[48]9456scheme (see Uhlenbrock, diploma thesis). v-
[5]9457and
9458w-cycles (see <a href="#cycle_mg">cycle_mg</a>)
9459are implemented. The convergence of the iterative scheme can be
9460steered by the number of v-/w-cycles to be carried out for each call of
9461the scheme (<a href="#mg_cycles">mg_cycles</a>)
9462and by the number of Gauss-Seidel iterations (see <a href="#ngsrb">ngsrb</a>)
9463to be carried out on each grid level. Instead the requested accuracy
[48]9464can be given via <a href="#residual_limit">residual_limit</a>.
[108]9465            <span style="font-weight: bold;">This is the default!</span>
[5]9466The
9467smaller this limit is, the more cycles have to be carried out in this
9468case and the number of cycles may vary from timestep to timestep.</p>
[108]9469
9470
9471
[354]9472
9473
[108]9474            <br>
9475
9476
[354]9477
9478
[108]9479If <a href="#mg_cycles">mg_cycles</a>
[5]9480is set to its optimal value, the computing time of the
[48]9481multi-grid scheme amounts approximately to that of the direct solver <span style="font-style: italic;">poisfft</span>, as long as
9482the number of
[5]9483grid points in the three directions
9484of space corresponds to a power-of-two (2<sup>n</sup>)
[48]9485where <i>n</i> &gt;= 5 must hold. With large <i>n,
[108]9486            </i>the
[5]9487multi-grid scheme can even be faster than the direct solver (although
9488its accuracy is several orders of magnitude worse, but this does not
9489affect the accuracy of the simulation). Nevertheless, the user should
9490always carry out some test runs in order to find out the optimum value
9491for <a href="#mg_cycles">mg_cycles</a>,
9492because the CPU time of a run very critically depends on this
[108]9493parameter.
9494           
9495           
[354]9496           
9497           
[108]9498            <p>This scheme requires that the number of grid
[48]9499points of
[5]9500the
9501subdomains (or of the total domain, if only one PE is uesd) along each
9502of the directions can at least be devided once by 2 without rest.</p>
[108]9503
9504
9505
[354]9506
9507
[5]9508With parallel runs, starting from a certain grid level the
9509data of the subdomains are possibly gathered on PE0 in order to allow
9510for a further coarsening of the grid. The grid level for gathering can
9511be manually set by <a href="#mg_switch_to_pe0_level">mg_switch_to_pe0_level</a>.<br>
[108]9512
9513
9514
[354]9515
9516
[108]9517           
9518           
[354]9519           
9520           
[108]9521            <p>Using this procedure requires the subdomains to be of
[5]9522identical size (see <a href="chapter_4.1.html#grid_matching">grid_matching</a>).</p>
[108]9523
9524
9525
[354]9526
9527
[108]9528            </td>
9529
9530
[354]9531
9532
[108]9533 </tr>
9534
9535
[354]9536
9537
[108]9538 <tr>
9539
9540
[354]9541
9542
[108]9543 <td style="vertical-align: top;"><i>sor</i></td>
9544
9545
9546
[354]9547
9548
[108]9549            <td style="vertical-align: top;">Successive over
[48]9550relaxation
[5]9551method (SOR). The convergence of
9552this
9553iterative scheme is steered with the parameters <a href="#omega_sor">omega_sor</a>,
[108]9554            <a href="chapter_4.1.html#nsor_ini">nsor_ini</a>
[48]9555and <a href="chapter_4.1.html#nsor">nsor</a>.&nbsp;
[108]9556            <br>
9557
9558
[354]9559
9560
[108]9561Compared to the direct method and the multi-grid method, this
[48]9562scheme
[5]9563needs substantially
9564more computing time. It should only be used for test runs, e.g. if
[108]9565errors in the other pressure solver methods are assumed.</td>
9566
9567
[354]9568
9569
[108]9570 </tr>
9571
9572
9573
[354]9574
9575
[108]9576       
9577       
[354]9578       
9579       
[108]9580        </tbody> 
9581     
9582     
[354]9583     
9584     
[108]9585      </table>
9586
9587
[354]9588
9589
[108]9590 <br>
9591
9592
[354]9593
9594
[108]9595In order to speed-up
[61]9596performance, the Poisson equation is by default
[5]9597only solved at the last substep of a multistep Runge-Kutta scheme (see <a href="#call_psolver_at_all_substeps">call_psolver
9598at_all_substeps</a> and <a href="chapter_4.1.html#timestep_scheme">timestep_scheme</a>).&nbsp;
[108]9599      </td>
9600
9601
[354]9602
9603
[108]9604 </tr>
9605
9606
[354]9607
9608
[108]9609 <tr>
9610
9611
[354]9612
9613
[108]9614 <td style="vertical-align: top;"> 
9615     
9616     
[354]9617     
9618     
[108]9619      <p><a name="rayleigh_damping_factor"></a><b>rayleigh_damping</b>
9620      <br>
9621
9622
[354]9623
9624
[108]9625 <b>_factor</b></p>
9626
9627
[354]9628
9629
[108]9630 </td>
9631
9632
[354]9633
9634
[108]9635 <td style="vertical-align: top;">R</td>
9636
9637
[354]9638
9639
[108]9640 <td style="vertical-align: top;"><i>0.0 or</i><br>
9641
9642
9643
[354]9644
9645
[108]9646      <i>0.01</i></td>
9647
9648
[354]9649
9650
[108]9651 <td style="vertical-align: top;">
9652     
9653     
[354]9654     
9655     
[108]9656      <p>Factor for Rayleigh damping.&nbsp; </p>
9657
9658
[354]9659
9660
[108]9661 
9662     
9663     
[354]9664     
9665     
[108]9666      <p>A
[48]9667so-called Rayleigh damping is applied to all prognostic
[5]9668variables if a non-zero value is assigned to <b>rayleigh_damping_factor</b>.&nbsp;
9669If switched on, variables are forced towards the value of their
9670respective basic states (e.g. the geostrophic wind). The intensity of
9671damping is controlled by the value the <b>rayleigh_damping_factor</b>
9672is assigned to.
9673The damping starts weakly at a height defined by <a href="#rayleigh_damping_height">rayleigh_damping_height</a>
[48]9674and rises according to a sin<sup>2</sup>-function to its
9675maximum value
[5]9676at
[108]9677the top (ocean: bottom) boundary. </p>
9678
9679
[354]9680
9681
[108]9682 
9683     
9684     
[354]9685     
9686     
[108]9687      <p>This method
[5]9688effectively damps gravity waves, caused by boundary layer convection,
9689which may spread out vertically in the inversion layer and which are
[108]9690reflected&nbsp;at the top (ocean: bottom)
[5]9691boundary. This particularly happens with the upstream-spline scheme
9692switched on (see <a href="chapter_4.1.html#momentum_advec">momentum_advec</a>
9693or <a href="chapter_4.1.html#scalar_advec">scalar_advec</a>).
9694Therefore, with this scheme the Rayleigh damping is switched on (<b>rayleigh_damping_factor</b>
[48]9695= <i>0.01</i>) by default. Otherwise it remains switched
[108]9696off.&nbsp; </p>
9697
9698
[354]9699
9700
[108]9701 
9702     
9703     
[354]9704     
9705     
[108]9706      <p>The Rayleigh damping factor must
[48]9707hold the condition <i>0.0</i>
[5]9708&lt;= <b>rayleigh_damping_factor</b>
9709&lt;= <i>1.0</i>. Large values (close to <span style="font-style: italic;">1.0</span>) can cause
[108]9710numerical instabilities.</p>
9711
9712
[354]9713
9714
[108]9715 </td>
9716
9717
[354]9718
9719
[108]9720 </tr>
9721
9722
[354]9723
9724
[108]9725 <tr>
9726
9727
9728
[354]9729
9730
[108]9731      <td style="vertical-align: top;"> 
9732     
9733     
[354]9734     
9735     
[108]9736      <p><a name="rayleigh_damping_height"></a><b>rayleigh_damping</b>
9737      <br>
9738
9739
[354]9740
9741
[108]9742 <b>_height</b></p>
9743
9744
[354]9745
9746
[108]9747 </td>
9748
9749
[354]9750
9751
[108]9752 <td style="vertical-align: top;">R</td>
9753
9754
[354]9755
9756
[108]9757 <td style="vertical-align: top;"> 
9758     
9759     
[354]9760     
9761     
[108]9762      <p><i>2/3 *</i>
9763      <br>
9764
9765
[354]9766
9767
[108]9768      <span style="font-style: italic;">zu</span><i style="font-style: italic;">(nz)</i></p>
[354]9769
9770
9771     
9772     
[108]9773      <p> (ocean:<i style="font-style: italic;">&nbsp;</i><i>2/3 *</i>
9774      <i style="font-style: italic;"> zu(0)</i>)</p>
9775
9776
9777
[354]9778
9779
[108]9780      </td>
9781
9782
[354]9783
9784
[108]9785 <td style="vertical-align: top;"> 
9786     
9787     
[354]9788     
9789     
[108]9790      <p>Height above (ocean: below) which the Rayleigh damping starts (in m).&nbsp; </p>
9791
9792
[354]9793
9794
[108]9795 
9796     
9797     
[354]9798     
9799     
[108]9800      <p>With
[48]9801Rayleigh damping switched on (see <a href="#rayleigh_damping_factor">rayleigh_damping_factor</a>),
[5]9802this parameter determines the range where damping is applied. By
[108]9803default, Rayleigh damping will be applied in the upper (ocean: lower) third of the
[5]9804model
[108]9805domain.</p>
9806
9807
[354]9808
9809
[108]9810 </td>
9811
9812
[354]9813
9814
[108]9815 </tr>
9816
9817
[354]9818
9819
[108]9820 <tr>
9821
9822
[354]9823
9824
[108]9825 <td style="vertical-align: top;"> 
9826     
9827     
[354]9828     
9829     
[108]9830      <p><a name="residual_limit"></a><b>residual_limit</b></p>
9831
9832
9833
[354]9834
9835
[108]9836      </td>
9837
9838
[354]9839
9840
[108]9841 <td style="vertical-align: top;">R</td>
9842
9843
9844
[354]9845
9846
[108]9847      <td style="vertical-align: top;"><i>1.0E-6</i></td>
9848
9849
9850
[354]9851
9852
[108]9853      <td style="vertical-align: top;"> 
9854     
9855     
[354]9856     
9857     
[108]9858      <p>Largest
[48]9859residual permitted for the multi-grid scheme (in s<sup>-2</sup>m<sup>-3</sup>).&nbsp;
[108]9860      </p>
9861
9862
[354]9863
9864
[108]9865 
9866     
9867     
[354]9868     
9869     
[108]9870      <p>This is a parameter to steer the accuracy of the
[48]9871multi-grid
[5]9872scheme (see <a href="#psolver">psolver</a>).
9873The assigned cycle (v- or w-cycle, see <a href="#mg_cycles">mg_cycles</a>)
[48]9874is passed through until the residual falls below the limit given by <span style="font-weight: bold;">residual_limit</span>. If
9875this
[5]9876is not the case after 1000 cycles, the PALM aborts with a corresponding
[108]9877error message.</p>
9878
9879
[354]9880
9881
[108]9882 
9883     
9884     
[354]9885     
9886     
[108]9887      <p>The reciprocal value of this
[48]9888parameter can be interpreted as
[5]9889a factor by the divergence of the provisional
9890velocity field is approximately reduced after the multi-grid scheme has
9891been applied (thus the default value causes a reduction of the
[108]9892divergence by approx. 6 orders of magnitude).&nbsp; </p>
9893
9894
[354]9895
9896
[108]9897 </td>
9898
9899
9900
[354]9901
9902
[108]9903    </tr>
9904
9905
[354]9906
9907
[108]9908 <tr>
9909
9910
[354]9911
9912
[108]9913 <td style="vertical-align: top;">
9914     
9915     
[354]9916     
9917     
[108]9918      <p><a name="restart_time"></a><b>restart_time</b></p>
9919
9920
9921
[354]9922
9923
[108]9924      </td>
9925
9926
[354]9927
9928
[108]9929 <td style="vertical-align: top;">R</td>
9930
9931
9932
[354]9933
9934
[108]9935      <td style="vertical-align: top;"><i>9999999.9</i></td>
9936
9937
9938
[354]9939
9940
[108]9941      <td style="vertical-align: top;"> 
9942     
9943     
[354]9944     
9945     
[108]9946      <p>Simulated time
[48]9947after which a restart run is to be carried out
[108]9948(in s). </p>
9949
9950
[354]9951
9952
[108]9953 
9954     
9955     
[354]9956     
9957     
[108]9958      <p>The simulated time refers to the
[48]9959beginning of the
[5]9960initial run (t = 0), not to the beginning of the respective
9961restart run. Restart runs can additionally be forced to be carried out
[108]9962in regular intervals using the run time parameter <a href="#dt_restart">dt_restart</a>. </p>
9963
9964
[354]9965
9966
[108]9967 
9968     
9969     
[354]9970     
9971     
[108]9972      <p><span style="font-weight: bold;">Note:</span><br>
9973
9974
9975
[354]9976
9977
[5]9978A successful operation of this parameter requires additional
9979modifications in the <span style="font-weight: bold;">mrun</span>-call
9980for the respective run (see <a href="chapter_3.3.html">chapter
[108]99813.3</a>).<br>
9982
9983
[354]9984
9985
[108]9986 </p>
9987
9988
[354]9989
9990
[108]9991 
9992     
9993     
[354]9994     
9995     
[108]9996      <p>The choice of <b>restart_time</b>
[48]9997or <b>dt_restart</b> does
[5]9998not override the automatic start of restart runs in case that the job
[108]9999runs out of CPU time. <br>
10000
[354]10001
10002
[108]10003      </p>
10004
[354]10005
10006
[108]10007     
[354]10008     
10009     
[108]10010      <p>For <a href="chapter_3.8.html">coupled runs</a> this parameter must be&nbsp;equal in both parameter files <a href="chapter_3.4.html#PARIN"><font style="font-size: 10pt;" size="2"><span style="font-family: mon;"></span>PARIN</font></a>
10011and&nbsp;<a href="chapter_3.4.html#PARIN"><font style="font-size: 10pt;" size="2">PARIN_O</font></a>.</p>
10012
10013
[354]10014
10015
[108]10016 </td>
10017
10018
[354]10019
10020
[108]10021 </tr>
10022
10023
10024
[354]10025
10026
[108]10027    <tr>
10028
10029
[354]10030
10031
[108]10032 <td style="vertical-align: top;"> 
10033     
10034     
[354]10035     
10036     
[108]10037      <p><a name="section_xy"></a><b>section_xy</b></p>
10038
10039
10040
[354]10041
10042
[108]10043      </td>
10044
10045
[354]10046
10047
[108]10048 <td style="vertical-align: top;">I(100)<br>
10049
10050
10051
[354]10052
10053
[108]10054      </td>
10055
10056
[354]10057
10058
[108]10059 <td style="vertical-align: top;"><span style="font-style: italic;">no section</span><br>
10060
10061
10062
[354]10063
10064
[108]10065      </td>
10066
10067
[354]10068
10069
[108]10070 <td style="vertical-align: top;"> 
10071     
10072     
[354]10073     
10074     
[108]10075      <p lang="en-GB"><font face="Thorndale">Position
[48]10076of&nbsp;cross section(s) for&nbsp;output of 2d horizontal cross
[108]10077sections (grid point index k).&nbsp; </font> </p>
10078
10079
[354]10080
10081
[108]10082 
10083     
10084     
[354]10085     
10086     
[108]10087      <p><span lang="en-GB"><font face="Thorndale">If output
[48]10088of
10089horizontal cross sections is selected (see </font></span><a href="chapter_4.2.html#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a><span lang="en-GB"><font face="Thorndale">), this
10090parameter can be used to
[5]10091define the position(s) of the cross section(s). Up to 100 positions of
10092cross sections can be selected by assigning <b>section_xy</b>
10093the
10094corresponding vertical grid point index/indices k of the requested
10095cross section(s). The exact location (height level) of the cross
10096section depends on the variable for which the output is made: zu(k) for
10097scalars and horizontal velocities, zw(k) for the vertical velocity.
10098Information about the exact location of the cross section is contained
10099in the NetCDF output file (if the default NetCDF output is switched on;
[108]10100see <a href="#data_output_format">data_output_format</a>).</font></span></p>
10101
10102
[354]10103
10104
[108]10105     
10106     
[354]10107     
10108     
[108]10109      <p><span lang="en-GB"><font face="Thorndale">Assigning <span style="font-weight: bold;">section_xy</span> = <span style="font-style: italic;">-1</span>
[48]10110creates the output of horizontal cross sections averaged along z. In
10111the
10112NetCDF output file these (averaged) cross sections are given the
[108]10113z-coordinate <span style="font-style: italic;">-1.0</span>.</font></span></p>
10114
10115
[354]10116
10117
[108]10118     
10119     
[354]10120     
10121     
[108]10122      <p><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">Assignments to <b>section_xy</b>
[5]10123does not effect the output of horizontal cross sections of variable u<sub>*</sub>
[48]10124and theta<sub>*</sub> and the liquid water path lwp*. For
10125these quantities always only one cross
[108]10126section (for z=zu(1)) is output.</font></span></p>
10127
10128
[354]10129
10130
[108]10131      <span lang="en-GB"><font face="Thorndale">In case of <span style="font-weight: bold;">data_output_format</span> =
10132      <span style="font-style: italic;">'iso2d'</span> and
[48]10133if several cross sections are selected (e.g. <b>section_xy</b>
10134= <i>1</i>, <i>10</i>, <i>15</i>),
10135then the respective data are
[5]10136successively written to file. The output order follows the order given
10137by <b>section_xy</b>.&nbsp;</font></span></td>
[108]10138
10139
10140
[354]10141
10142
[108]10143    </tr>
10144
10145
[354]10146
10147
[108]10148 <tr>
10149
10150
[354]10151
10152
[108]10153 <td style="vertical-align: top;">
10154     
10155     
[354]10156     
10157     
[108]10158      <p><a name="section_xz"></a><b>section_xz</b></p>
10159
10160
10161
[354]10162
10163
[108]10164      </td>
10165
10166
[354]10167
10168
[108]10169 <td style="vertical-align: top;">I(100)<br>
10170
10171
10172
[354]10173
10174
[108]10175      </td>
10176
10177
[354]10178
10179
[108]10180 <td style="vertical-align: top;"><span style="font-style: italic;">no section</span></td>
10181
10182
10183
[354]10184
10185
[108]10186      <td style="vertical-align: top;"> 
10187     
10188     
[354]10189     
10190     
[108]10191      <p lang="en-GB"><font face="Thorndale">Position of&nbsp;cross section(s)
[48]10192for&nbsp;output of 2d (xz) vertical cross sections (grid point
[108]10193index j).&nbsp; </font> </p>
10194
10195
[354]10196
10197
[108]10198 <span lang="en-GB"><font face="Thorndale">If output of
[48]10199vertical xz cross sections is selected (see </font></span><a href="chapter_4.2.html#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a><span lang="en-GB"><font face="Thorndale">), this
10200parameter can be used to
[5]10201define the position(s) of the cross section(s). Up to 100 positions of
[48]10202cross sections can be selected by assigning <b>section_xz</b>
10203the
[5]10204corresponding horizontal grid point index/indices j of the requested
10205cross section(s). The exact position (in y-direction) of the cross
[48]10206section is given by j*</font></span><a href="chapter_4.1.html#dy"><span lang="en-GB"><font face="Thorndale">dy</font></span></a> <span lang="en-GB"><font face="Thorndale">or (j-0.5)*</font></span><a href="chapter_4.1.html#dy"><span lang="en-GB"><font face="Thorndale">dy</font></span></a><span lang="en-GB"><font face="Thorndale">, depending
10207on which grid the output quantity is defined. However, in
10208the&nbsp;NetCDF output file </font></span><span lang="en-GB"><font face="Thorndale">(if the
10209default NetCDF output is switched on; see <a href="chapter_4.2.html#data_output_format">data_output_format</a>)
10210no distinction is made between the quantities and j*<span style="font-weight: bold;">dy</span> is used for all
[108]10211positions.<br>
10212
10213
[354]10214
10215
[108]10216      <br>
10217
10218
[354]10219
10220
[108]10221Assigning <span style="font-weight: bold;">section_xz</span> = <span style="font-style: italic;">-1</span>
[5]10222creates the output of vertical cross sections averaged along y. In the
10223NetCDF output file these (averaged) cross sections are given the
[108]10224y-coordinate <span style="font-style: italic;">-1.0</span>.<br>
10225
10226
[354]10227
10228
[108]10229      </font></span><span lang="en-GB"><font face="Thorndale"><br>
10230
10231
[354]10232
10233
[108]10234      </font></span><span lang="en-GB"><font face="Thorndale">In case of <span style="font-weight: bold;">data_output_format</span> =
10235      <span style="font-style: italic;">'iso2d'</span> and
10236      </font></span><span lang="en-GB"><font face="Thorndale">if several cross sections are
[48]10237selected (e.g. <b>section_xz</b> = <i>0</i>, <i>12</i>,
[108]10238      <i>27</i>),
[5]10239then the respective data are successively written to file. The output
10240order follows the order given by <b>section_xz</b>.</font></span></td>
[108]10241
10242
10243
[354]10244
10245
[108]10246    </tr>
10247
10248
[354]10249
10250
[108]10251 <tr>
10252
10253
[354]10254
10255
[108]10256 <td style="vertical-align: top;">
10257     
10258     
[354]10259     
10260     
[108]10261      <p><a name="section_yz"></a><b>section_yz</b></p>
10262
10263
10264
[354]10265
10266
[108]10267      </td>
10268
10269
[354]10270
10271
[108]10272 <td style="vertical-align: top;">I(100)<br>
10273
10274
10275
[354]10276
10277
[108]10278      </td>
10279
10280
[354]10281
10282
[108]10283 <td style="vertical-align: top;"><span style="font-style: italic;">no section</span></td>
10284
10285
10286
[354]10287
10288
[108]10289      <td style="vertical-align: top;"> 
10290     
10291     
[354]10292     
10293     
[108]10294      <p lang="en-GB"><font face="Thorndale">Position of&nbsp;cross section(s)
[48]10295for&nbsp;output of 2d (yz) vertical cross sections (grid point
[108]10296index i).&nbsp; </font> </p>
10297
10298
[354]10299
10300
[108]10301 <span lang="en-GB"><font face="Thorndale">If output of
[5]10302vertical yz cross sections is selected (see </font></span><a href="chapter_4.2.html#data_output"><span lang="en-GB"><font face="Thorndale">data_output</font></span></a><span lang="en-GB"><font face="Thorndale">),
10303this parameter can be used to define the position(s) of the cross
10304section(s). Up to 100 positions of cross sections can be selected by
[48]10305assigning <b>section_yz</b> the corresponding horizontal
10306grid point
[5]10307index/indices i of the requested cross section(s). The exact position
[48]10308(in x-direction) of the cross section is given by i*</font></span><a href="chapter_4.1.html#dx"><span lang="en-GB"><font face="Thorndale">dx</font></span></a> <span lang="en-GB"><font face="Thorndale">or (i-0.5)*</font></span><a href="chapter_4.1.html#dx"><span lang="en-GB"><font face="Thorndale">dx</font></span></a><span lang="en-GB"><font face="Thorndale">, depending
10309on which grid the output quantity is defined.&nbsp;</font></span><span lang="en-GB"><font face="Thorndale">However, in
10310the&nbsp;NetCDF output file </font></span><span lang="en-GB"><font face="Thorndale">(if the
10311default NetCDF output is switched on; see <a href="chapter_4.2.html#data_output_format">data_output_format</a>)
10312no distinction is made between the quantities and i*<span style="font-weight: bold;">dx</span> is used for all
[108]10313positions.<br>
10314
10315
[354]10316
10317
[108]10318      <br>
10319
10320
[354]10321
10322
[108]10323      </font></span><span lang="en-GB"><font face="Thorndale">Assigning <span style="font-weight: bold;">section_yz</span> = <span style="font-style: italic;">-1</span>
[5]10324creates the output of vertical cross sections averaged along x. In the
[48]10325NetCDF output file these (averaged) cross sections are given the
[108]10326x-coordinate <span style="font-style: italic;">-1.0</span>.</font></span><br>
10327
10328
[354]10329
10330
[108]10331      <span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale"> <br>
10332
10333
[354]10334
10335
[108]10336      </font></span><span lang="en-GB"><font face="Thorndale">In case of <span style="font-weight: bold;">data_output_format</span> =
10337      <span style="font-style: italic;">'iso2d'</span> and
10338      </font></span><span lang="en-GB"><font face="Thorndale">if several cross sections are
[48]10339selected (e.g. <b>section_yz</b> = <span style="font-style: italic;">3</span>, <span style="font-style: italic;">27</span>, 19), then the
[5]10340respective data are successively written to file. The output order
10341follows the order given by <b>section_yz</b>.</font></span></td>
[108]10342
10343
10344
[354]10345
10346
[108]10347    </tr>
10348
10349
[354]10350
10351
[108]10352 <tr>
10353
10354
[354]10355
10356
[108]10357 <td style="vertical-align: top;"><a name="skip_time_data_output"></a><span style="font-weight: bold;">skip_time_data_output</span><br>
10358
10359
10360
[354]10361
10362
[108]10363      </td>
10364
10365
[354]10366
10367
[108]10368 <td style="vertical-align: top;">R<br>
10369
10370
[354]10371
10372
[108]10373 </td>
10374
10375
10376
[354]10377
10378
[108]10379      <td style="vertical-align: top;"><span style="font-style: italic;">0.0</span><br>
10380
10381
[354]10382
10383
[108]10384 </td>
10385
10386
10387
[354]10388
10389
[108]10390      <td style="vertical-align: top;">No data output before
10391this interval has passed (in s).<br>
10392
10393
[354]10394
10395
[108]10396      <br>
10397
10398
[354]10399
10400
[108]10401This
[48]10402parameter causes that data output activities are starting not before
10403this interval
10404(counting from the beginning of the simulation, t=0) has passed. By
10405default, this
[5]10406applies for output of instantaneous 3d volume data, cross section data,
10407spectra and vertical profile data as well as for temporally averaged 2d
[108]10408and 3d data. Individual intervals can be assigned using parameters <a href="#skip_time_do3d">skip_time_do3d</a>, <a href="#skip_time_do2d_xy">skip_time_do2d_xy</a>, <a href="#skip_time_do2d_xz">skip_time_do2d_xz</a>, <a href="#skip_time_do2d_yz">skip_time_do2d_yz</a>, <a href="#skip_time_dosp">skip_time_dosp</a>,&nbsp;<a href="#skip_time_dopr">skip_time_dopr</a>, and <a href="#skip_time_data_output_av">skip_time_data_output_av</a>.<br>
10409
10410
[354]10411
10412
[108]10413      <br>
10414
10415
[354]10416
10417
[108]10418      <span style="font-weight: bold;">Example:</span><br>
10419
10420
[354]10421
10422
[108]10423If
[48]10424the user has set <a href="#dt_data_output">dt_data_output</a>
10425= <span style="font-style: italic;">3600.0</span>
10426and <span style="font-weight: bold;">skip_time_data_output</span>
10427= <span style="font-style: italic;">1800.0</span>,
[108]10428then the first output will be done at t = 5400 s.<br>
10429
10430
[354]10431
10432
[108]10433 </td>
10434
10435
10436
[354]10437
10438
[108]10439    </tr>
10440
10441
[354]10442
10443
[108]10444 <tr>
10445
10446
[354]10447
10448
[108]10449      <td style="vertical-align: top;"><a name="skip_time_data_output_av"></a><span style="font-weight: bold;">skip_time_data_output_av</span></td>
10450
10451
[354]10452
10453
[108]10454      <td style="vertical-align: top;">R</td>
10455
10456
[354]10457
10458
[108]10459      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="#skip_time_data_output">skip_time_<br>
10460
10461
[354]10462
10463
[108]10464data_output</a></span></td>
10465
10466
[354]10467
10468
[108]10469      <td style="vertical-align: top;">No output of temporally
10470averaged 2d/3d data before this interval has passed (in s).<br>
10471
10472
[354]10473
10474
[108]10475      <br>
10476
10477
[354]10478
10479
[108]10480This
[48]10481parameter causes that data output activities are starting not before
10482this interval
[108]10483(counting from the beginning of the simulation, t=0) has passed. <br>
10484
10485
[354]10486
10487
[108]10488      <br>
10489
10490
[354]10491
10492
[108]10493      <span style="font-weight: bold;">Example:</span><br>
10494
10495
[354]10496
10497
[108]10498If
[48]10499the user has set <a href="#dt_data_output_av">dt_data_output_av</a>
10500= <span style="font-style: italic;">3600.0</span>
10501and <span style="font-weight: bold;">skip_time_data_output_av</span>
10502= <span style="font-style: italic;">1800.0</span>,
[108]10503then the first output will be done at t = 5400 s.</td>
10504
10505
[354]10506
10507
[108]10508    </tr>
10509
10510
[354]10511
10512
[108]10513    <tr>
10514
10515
10516
[354]10517
10518
[108]10519      <td style="vertical-align: top;"><a name="skip_time_dopr"></a><span style="font-weight: bold;">skip_time_dopr</span><br>
10520
10521
10522
[354]10523
10524
[108]10525      </td>
10526
10527
[354]10528
10529
[108]10530 <td style="vertical-align: top;">R<br>
10531
10532
[354]10533
10534
[108]10535 </td>
10536
10537
10538
[354]10539
10540
[108]10541      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="chapter_4.2.html#skip_time_data_output">skip_time_<br>
10542
10543
[354]10544
10545
[108]10546data_output</a></span>
10547      </td>
10548
10549
[354]10550
10551
[108]10552 <td style="vertical-align: top;">No output of
10553vertical profile data before this interval has passed (in s).<br>
10554
10555
[354]10556
10557
[108]10558      <br>
10559
10560
[354]10561
10562
[108]10563This
[48]10564parameter causes that data output activities are starting not before
10565this interval
[108]10566(counting from the beginning of the simulation, t=0) has passed. <br>
10567
10568
[354]10569
10570
[108]10571      <br>
10572
10573
[354]10574
10575
[108]10576      <span style="font-weight: bold;">Example:</span><br>
10577
10578
[354]10579
10580
[108]10581If
[48]10582the user has set <a href="#dt_dopr">dt_dopr</a> = <span style="font-style: italic;">3600.0</span> and <span style="font-weight: bold;">skip_time_dopr</span> = <span style="font-style: italic;">1800.0</span>, then the
[108]10583first output will be done at t = 5400 s. </td>
10584
10585
[354]10586
10587
[108]10588 </tr>
10589
10590
[354]10591
10592
[108]10593 <tr>
10594
10595
10596
[354]10597
10598
[108]10599      <td style="vertical-align: top;"><a name="skip_time_do2d_xy"></a><span style="font-weight: bold;">skip_time_do2d_xy</span><br>
10600
10601
10602
[354]10603
10604
[108]10605      </td>
10606
10607
[354]10608
10609
[108]10610 <td style="vertical-align: top;">R<br>
10611
10612
[354]10613
10614
[108]10615 </td>
10616
10617
10618
[354]10619
10620
[108]10621      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="chapter_4.2.html#skip_time_data_output">skip_time_<br>
10622
10623
[354]10624
10625
[108]10626data_output</a></span>
10627      </td>
10628
10629
[354]10630
10631
[108]10632 <td style="vertical-align: top;">No output of
[48]10633instantaneous horizontal cross section data before this interval has
[108]10634passed (in s).<br>
10635
10636
[354]10637
10638
[108]10639      <br>
10640
10641
[354]10642
10643
[108]10644This
[48]10645parameter causes that data output activities are starting not before
10646this interval
[108]10647(counting from the beginning of the simulation, t=0) has passed. <br>
10648
10649
[354]10650
10651
[108]10652      <br>
10653
10654
[354]10655
10656
[108]10657      <span style="font-weight: bold;">Example:</span><br>
10658
10659
[354]10660
10661
[108]10662If
[48]10663the user has set <a href="#dt_do2d_xy">dt_do2d_xy</a>
10664= <span style="font-style: italic;">3600.0</span>
10665and <span style="font-weight: bold;">skip_time_do2d_xy</span>
10666= <span style="font-style: italic;">1800.0</span>,
[108]10667then the first output will be done at t = 5400 s. </td>
10668
10669
[354]10670
10671
[108]10672 </tr>
10673
10674
10675
[354]10676
10677
[108]10678    <tr>
10679
10680
[354]10681
10682
[108]10683 <td style="vertical-align: top;"><a name="skip_time_do2d_xz"></a><span style="font-weight: bold;">skip_time_do2d_xz</span><br>
10684
10685
10686
[354]10687
10688
[108]10689      </td>
10690
10691
[354]10692
10693
[108]10694 <td style="vertical-align: top;">R<br>
10695
10696
[354]10697
10698
[108]10699 </td>
10700
10701
10702
[354]10703
10704
[108]10705      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="chapter_4.2.html#skip_time_data_output">skip_time_<br>
10706
10707
[354]10708
10709
[108]10710data_output</a></span>
10711      </td>
10712
10713
[354]10714
10715
[108]10716 <td style="vertical-align: top;">No output of
[48]10717instantaneous vertical (xz) cross section data before this interval has
[108]10718passed (in s).<br>
10719
10720
[354]10721
10722
[108]10723      <br>
10724
10725
[354]10726
10727
[108]10728This
[48]10729parameter causes that data output activities are starting not before
10730this interval
[108]10731(counting from the beginning of the simulation, t=0) has passed. <br>
10732
10733
[354]10734
10735
[108]10736      <br>
10737
10738
[354]10739
10740
[108]10741      <span style="font-weight: bold;">Example:</span><br>
10742
10743
[354]10744
10745
[108]10746If
[48]10747the user has set <a href="#dt_do2d_xz">dt_do2d_xz</a>
10748= <span style="font-style: italic;">3600.0</span>
10749and <span style="font-weight: bold;">skip_time_do2d_xz</span>
10750= <span style="font-style: italic;">1800.0</span>,
[108]10751then the first output will be done at t = 5400 s. </td>
10752
10753
[354]10754
10755
[108]10756 </tr>
10757
10758
10759
[354]10760
10761
[108]10762    <tr>
10763
10764
[354]10765
10766
[108]10767 <td style="vertical-align: top;"><a name="skip_time_do2d_yz"></a><span style="font-weight: bold;">skip_time_do2d_yz</span><br>
10768
10769
10770
[354]10771
10772
[108]10773      </td>
10774
10775
[354]10776
10777
[108]10778 <td style="vertical-align: top;">R<br>
10779
10780
[354]10781
10782
[108]10783 </td>
10784
10785
10786
[354]10787
10788
[108]10789      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="chapter_4.2.html#skip_time_data_output">skip_time_<br>
10790
10791
[354]10792
10793
[108]10794data_output</a></span>
10795      </td>
10796
10797
[354]10798
10799
[108]10800 <td style="vertical-align: top;">No output of
[48]10801instantaneous vertical (yz) cross section data before this interval has
[108]10802passed (in s).<br>
10803
10804
[354]10805
10806
[108]10807      <br>
10808
10809
[354]10810
10811
[108]10812This
[48]10813parameter causes that data output activities are starting not before
10814this interval
[108]10815(counting from the beginning of the simulation, t=0) has passed. <br>
10816
10817
[354]10818
10819
[108]10820      <br>
10821
10822
[354]10823
10824
[108]10825      <span style="font-weight: bold;">Example:</span><br>
10826
10827
[354]10828
10829
[108]10830If
[48]10831the user has set <a href="#dt_do2d_yz">dt_do2d_yz</a>
10832= <span style="font-style: italic;">3600.0</span>
10833and <span style="font-weight: bold;">skip_time_do2d_yz</span>
10834= <span style="font-style: italic;">1800.0</span>,
[108]10835then the first output will be done at t = 5400 s. </td>
10836
10837
[354]10838
10839
[108]10840 </tr>
10841
10842
10843
[354]10844
10845
[108]10846    <tr>
10847
10848
[354]10849
10850
[108]10851 <td style="vertical-align: top;"><a name="skip_time_do3d"></a><span style="font-weight: bold;">skip_time_do3d</span><br>
10852
10853
10854
[354]10855
10856
[108]10857      </td>
10858
10859
[354]10860
10861
[108]10862 <td style="vertical-align: top;">R<br>
10863
10864
[354]10865
10866
[108]10867 </td>
10868
10869
10870
[354]10871
10872
[108]10873      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="chapter_4.2.html#skip_time_data_output">skip_time_<br>
10874
10875
[354]10876
10877
[108]10878data_output</a></span>
10879      </td>
10880
10881
[354]10882
10883
[108]10884 <td style="vertical-align: top;">No output of
10885instantaneous 3d volume data before this interval has passed (in s).<br>
10886
10887
[354]10888
10889
[108]10890      <br>
10891
10892
[354]10893
10894
[108]10895This
[48]10896parameter causes that data output activities are starting not before
10897this interval
[108]10898(counting from the beginning of the simulation, t=0) has passed. <br>
10899
10900
[354]10901
10902
[108]10903      <br>
10904
10905
[354]10906
10907
[108]10908      <span style="font-weight: bold;">Example:</span><br>
10909
10910
[354]10911
10912
[108]10913If
[48]10914the user has set <a href="#dt_do3d">dt_do3d</a> = <span style="font-style: italic;">3600.0</span> and <span style="font-weight: bold;">skip_time_do3d</span> = <span style="font-style: italic;">1800.0</span>, then the
[108]10915first output will be done at t = 5400 s. </td>
10916
10917
[354]10918
10919
[108]10920 </tr>
10921
10922
10923
[354]10924
10925
[108]10926    <tr>
10927
10928
[354]10929
10930
[108]10931 <td style="vertical-align: top;"> 
10932     
10933     
[354]10934     
10935     
[108]10936      <p><a name="termination_time_needed"></a><b>termination_time</b>
10937      <br>
10938
10939
[354]10940
10941
[108]10942 <b>_needed</b></p>
10943
10944
[354]10945
10946
[108]10947 </td>
10948
10949
[354]10950
10951
[108]10952 <td style="vertical-align: top;">R<br>
10953
10954
[354]10955
10956
[108]10957 </td>
10958
10959
[354]10960
10961
[108]10962 <td style="vertical-align: top;"><span style="font-style: italic;">35.0</span><br>
10963
10964
[354]10965
10966
[108]10967 </td>
10968
10969
10970
[354]10971
10972
[108]10973      <td style="vertical-align: top;"> 
10974     
10975     
[354]10976     
10977     
[108]10978      <p>CPU time
[48]10979needed for terminal actions at the end of a run in
[108]10980batch mode (in s).<br>
10981
10982
[354]10983
10984
[108]10985 </p>
10986
10987
[354]10988
10989
[108]10990 
10991     
10992     
[354]10993     
10994     
[108]10995      <p>If the environment
[48]10996variable <b>write_binary </b>is
[5]10997set <i>true</i> (see <a href="chapter_3.3.html">chapter
[48]109983.3</a>), PALM checks the remaining CPU time of the job after
10999each
[5]11000timestep. Time integration must not consume the CPU time completely,
11001since several actions still have to be carried out after time
11002integration has finished (e.g. writing of binary data for the restart
11003run, carrying out output commands, copying of local files to their
11004permanent destinations, etc.) which also takes some time. The maximum
11005possible time needed for these activities plus a reserve is to be given
[48]11006with the parameter <b>termination_time_needed</b>. Among
11007other things,
[5]11008it depends on
11009the number of grid points used. If its value is selected too small,
11010then the
11011respective job will be prematurely aborted by the queuing system, which
11012may result in a data loss and will possibly interrupt the job chain.<br>
[108]11013
11014
11015
[354]11016
11017
[108]11018      </p>
11019
11020
[354]11021
11022
[108]11023 
11024     
11025     
[354]11026     
11027     
[108]11028      <p>An abort happens in any way, if the environment
[48]11029variable <span style="font-weight: bold;">write_binary</span>
11030is not set to <span style="font-style: italic;">true</span>
11031and if moreover the job has
11032been assigned an insufficient CPU time by <b>mrun</b>
11033option <tt><tt>-t</tt></tt>. <i><br>
[108]11034
11035
11036
[354]11037
11038
[108]11039      </i> </p>
11040
11041
[354]11042
11043
[108]11044 
11045     
11046     
[354]11047     
11048     
[108]11049      <p><span style="font-weight: bold;">Note:</span><br>
11050
11051
11052
[354]11053
11054
[48]11055On the IBM computers of the HLRN the time used by the job <span style="font-weight: bold;">before</span> the start of
11056PALM
[5]11057have also to be accounted for (e.g. for
[108]11058compilation and copying of input files).</p>
11059
11060
[354]11061
11062
[108]11063 </td>
11064
11065
[354]11066
11067
[108]11068 </tr>
11069
11070
11071
[354]11072
11073
[108]11074    <tr>
11075
11076
[354]11077
11078
[108]11079 <td style="vertical-align: top;"> 
11080     
11081     
[354]11082     
11083     
[108]11084      <p><a name="use_prior_plot1d_parameters"></a><b>use_prior_plot1d</b>
11085      <br>
11086
11087
[354]11088
11089
[108]11090 <b>_parameters</b></p>
11091
11092
[354]11093
11094
[108]11095 </td>
11096
11097
[354]11098
11099
[108]11100 <td style="vertical-align: top;">L</td>
11101
11102
[354]11103
11104
[108]11105 <td style="vertical-align: top;"><i>.F.</i></td>
11106
11107
11108
[354]11109
11110
[108]11111      <td style="vertical-align: top;"> 
11112     
11113     
[354]11114     
11115     
[108]11116      <p>Additional
[48]11117plot of vertical profile data with <span style="font-weight: bold;">profil</span>
11118from preceding runs of the
[108]11119job chain.&nbsp; </p>
11120
11121
[354]11122
11123
[108]11124 
11125     
11126     
[354]11127     
11128     
[108]11129      <p>This parameter only applies
[48]11130for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
[108]11131= <span style="font-style: italic;">'profil'</span>.</p>
11132
11133
[354]11134
11135
[108]11136     
11137     
[354]11138     
11139     
[108]11140      <p>By
[48]11141default, plots of horizontally averaged vertical profiles
[5]11142(see <a href="#data_output_pr">data_output_pr</a>)
11143only contain profiles of data produced by the model
11144run. If profiles of prior times (i.e. data of preceding jobs of a
11145job chain) shall be plotted additionally (e.g. for comparison
[48]11146purposes), <b>use_prior_plot1d_parameters</b> = <i>.T</i>.
11147must be
[108]11148set.<br>
11149
11150
[354]11151
11152
[108]11153 </p>
11154
11155
[354]11156
11157
[108]11158 
11159     
11160     
[354]11161     
11162     
[108]11163      <p>For further explanation see <a href="chapter_4.5.2.html">chapter
111644.5.2</a>.</p>
11165
11166
[354]11167
11168
[108]11169 </td>
11170
11171
[354]11172
11173
[108]11174 </tr>
11175
11176
[354]11177
11178
[108]11179 <tr>
11180
11181
[354]11182
11183
[108]11184 <td style="vertical-align: top;"> 
11185     
11186     
[354]11187     
11188     
[108]11189      <p><a name="z_max_do1d"></a><b>z_max_do1d</b></p>
11190
11191
11192
[354]11193
11194
[108]11195      </td>
11196
11197
[354]11198
11199
[108]11200 <td style="vertical-align: top;">R</td>
11201
11202
11203
[354]11204
11205
[108]11206      <td style="vertical-align: top;"><i>zu(nzt+1) (model
11207top)</i></td>
11208
11209
[354]11210
11211
[108]11212 <td style="vertical-align: top;">
11213     
11214     
[354]11215     
11216     
[108]11217      <p>Height level up to which horizontally averaged profiles are to
[5]11218be
[48]11219plotted with <span style="font-weight: bold;">profil</span>
11220(in
[108]11221m).&nbsp; </p>
11222
11223
[354]11224
11225
[108]11226 
11227     
11228     
[354]11229     
11230     
[108]11231      <p>This parameter only applies for
[48]11232&nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
[108]11233= <span style="font-style: italic;">'profil'</span>.</p>
11234
11235
[354]11236
11237
[108]11238     
11239     
[354]11240     
11241     
[108]11242      <p>It
[48]11243affects plots of horizontally averaged profiles
[5]11244(<a href="#data_output_pr">data_output_pr</a>)
11245when plotted with the plot software <span style="font-weight: bold;">profil</span>.
11246By default, profiles are plotted up to the top boundary. The height
[48]11247level up to which profiles are plotted can be decreased by assigning <span style="font-weight: bold;">z_max_do1d</span> a smaller
11248value.
11249Nevertheless, <span style="font-weight: bold;">all</span>
11250vertical
[5]11251grid points (0 &lt;= k &lt;= nz+1) are still output to file <a href="chapter_3.4.html#PLOT1D_DATA">PLOT1D_DATA</a>.</p>
[108]11252
11253
11254
[354]11255
11256
[108]11257     
11258     
[354]11259     
11260     
[108]11261      <p>If a normalization for the vertical axis was selected (see <a href="#cross_normalized_y">cross_normalized_y</a>), <b>z_max_do1d</b>
[5]11262has no effect. Instead, <a href="#z_max_do1d_normalized">z_max_do1d_normalized</a>
[108]11263must be used.</p>
11264
11265
[354]11266
11267
[108]11268 </td>
11269
11270
[354]11271
11272
[108]11273 </tr>
11274
11275
[354]11276
11277
[108]11278 <tr>
11279
11280
[354]11281
11282
[108]11283 <td style="vertical-align: top;"> 
11284     
11285     
[354]11286     
11287     
[108]11288      <p><a name="z_max_do1d_normalized"></a><b>z_max_do1d</b>
11289      <br>
11290
11291
[354]11292
11293
[108]11294 <b>_normalized</b></p>
11295
11296
[354]11297
11298
[108]11299 </td>
11300
11301
[354]11302
11303
[108]11304 <td style="vertical-align: top;">R</td>
11305
11306
[354]11307
11308
[108]11309 <td style="vertical-align: top;"><i>determined by plot</i>
11310      <br>
11311
11312
[354]11313
11314
[108]11315 <i>data</i> <br>
11316
11317
[354]11318
11319
[108]11320 </td>
11321
11322
[354]11323
11324
[108]11325 <td style="vertical-align: top;"> 
11326     
11327     
[354]11328     
11329     
[108]11330      <p>Normalized height
[48]11331level up to which horizontally averaged
[5]11332profiles are to be plotted with <span style="font-weight: bold;">profil</span>.&nbsp;
[108]11333      </p>
11334
11335
[354]11336
11337
[108]11338 
11339     
11340     
[354]11341     
11342     
[108]11343      <p>This parameter only applies for &nbsp;<a href="chapter_4.2.html#data_output_format">data_output_format</a>
11344= <span style="font-style: italic;">'profil'</span>.</p>
11345
11346
[354]11347
11348
[108]11349     
11350     
[354]11351     
11352     
[108]11353      <p>It
[48]11354affects plots of horizontally averaged profiles
[5]11355(<a href="#data_output_pr">data_output_pr</a>)
11356when plotted with the plot software <span style="font-weight: bold;">profil</span>,
11357if a normalization for the vertical axis is selected
11358(see <a href="#cross_normalized_y">cross_normalized_y</a>).
11359If e.g. the boundary layer height is used for normalization, then <b>z_max_do1d_normalized</b>
[48]11360= <i>1.5</i> means that all profiles up to the height
11361level of z =
[108]113621.5* z<sub>i </sub>are plotted.</p>
11363
11364
[354]11365
11366
[108]11367 </td>
11368
11369
[354]11370
11371
[108]11372 </tr>
11373
11374
11375
[354]11376
11377
[108]11378    <tr>
11379
11380
[354]11381
11382
[108]11383 <td style="vertical-align: top;"> 
11384     
11385     
[354]11386     
11387     
[108]11388      <p><a name="z_max_do2d"></a><b>z_max_do2d</b></p>
11389
11390
11391
[354]11392
11393
[108]11394      </td>
11395
11396
[354]11397
11398
[108]11399 <td style="vertical-align: top;">R<br>
11400
11401
[354]11402
11403
[108]11404 </td>
11405
11406
11407
[354]11408
11409
[108]11410      <td style="vertical-align: top;"><span style="font-style: italic;">zu(nz)</span><br>
11411
11412
[354]11413
11414
[108]11415 </td>
11416
11417
11418
[354]11419
11420
[108]11421      <td style="vertical-align: top;"> 
11422     
11423     
[354]11424     
11425     
[108]11426      <p>Height level
[48]11427up to which 2d cross sections are to be plotted
[5]11428with <span style="font-weight: bold;">iso2d</span>
[108]11429(in m).&nbsp; </p>
11430
11431
[354]11432
11433
[108]11434 
11435     
11436     
[354]11437     
11438     
[108]11439      <p>This parameter only applies for
[48]11440&nbsp;<a href="#data_output_format">data_output_format</a>
[108]11441= <span style="font-style: italic;">'iso2d'</span>.</p>
11442
11443
[354]11444
11445
[108]11446     
11447     
[354]11448     
11449     
[108]11450      <p>It
[48]11451affects plots of&nbsp; 2d vertical cross
[5]11452sections (<a href="#data_output">data_output</a>)
[48]11453when plotted with <span style="font-weight: bold;">iso2d</span>.
11454By
11455default, vertical sections are plotted up to the top boundary. <span style="font-weight: bold;"></span>In contrast, with <b>z_max_do2d
[108]11456      </b>the
[5]11457visualization within
[48]11458the plot can be limited to a certain height level (0 &lt;= z
11459&lt;= <b>z_max_do2d</b>).
11460Nevertheless, <span style="font-weight: bold;">all</span>
11461grid points
[5]11462of the complete cross section are still output to the local files <a href="chapter_3.4.html#PLOT2D_XZ">PLOT2D_XZ</a>
11463or <a href="chapter_3.4.html#PLOT2D_YZ">PLOT2D_YZ</a>.
11464The level up to which the section is visualized can later be changed by
11465manually editing the
11466file <a href="chapter_3.4.html#PLOT2D_XZ_GLOBAL">PLOT2D_XZ_GLOBAL</a>
11467or <a href="chapter_3.4.html#PLOT2D_YZ_GLOBAL">PLOT2D_YZ_GLOBAL</a>
11468(the respective <span style="font-weight: bold;">iso2d</span>-parameter
11469is <a href="http://www.muk.uni-hannover.de/institut/software/iso2d_beschreibung.html#YRIGHT">yright</a>).</p>
[108]11470
11471
11472
[354]11473
11474
[108]11475      </td>
11476
11477
[354]11478
11479
[108]11480 </tr>
11481
11482
[354]11483
11484
[108]11485 
11486 
11487 
[354]11488 
11489 
[108]11490  </tbody>
11491</table>
11492
11493
[354]11494
11495
[108]11496<br>
11497
11498
11499
[354]11500
11501
[108]11502<br>
11503
11504
[354]11505
11506
[108]11507<h3 style="line-height: 100%;"><a name="particle_parameters"></a>Particle
[5]11508parameters: </h3>
[108]11509
11510
11511
[354]11512
11513
[102]11514<span style="font-weight: bold;"></span><span style="font-weight: bold;"></span>NAMELIST group name: <span style="font-weight: bold;">particles_par<br>
[108]11515
11516
11517
[354]11518
11519
[108]11520</span>
11521<table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="2">
11522
11523
[354]11524
11525
[108]11526 <tbody>
11527
11528
[354]11529
11530
[108]11531    <tr>
11532
11533
11534
[354]11535
11536
[108]11537      <td style="vertical-align: top;"><font size="4"><b>Parameter
[61]11538name</b></font></td>
[108]11539
11540
11541
[354]11542
11543
[108]11544      <td style="vertical-align: top;"><font size="4"><b>Type</b></font></td>
11545
11546
11547
[354]11548
11549
[108]11550      <td style="vertical-align: top;"> 
11551     
11552     
[354]11553     
11554     
[108]11555      <p><b><font size="4">Default</font></b> <br>
11556
11557
[354]11558
11559
[108]11560 <b><font size="4">value</font></b></p>
11561
11562
[354]11563
11564
[108]11565 </td>
11566
11567
11568
[354]11569
11570
[108]11571      <td style="vertical-align: top;"> 
11572     
11573     
[354]11574     
11575     
[108]11576      <p><font size="4"><b>Explanation</b></font></p>
11577
11578
11579
[354]11580
11581
[108]11582      </td>
11583
11584
[354]11585
11586
[108]11587 </tr>
11588
11589
[354]11590
11591
[108]11592 <tr>
11593
11594
[354]11595
11596
[108]11597 <td style="vertical-align: top;"> 
11598     
11599     
[354]11600     
11601     
[108]11602      <p><a name="dt_prel"></a><b>dt_prel</b></p>
11603
11604
11605
[354]11606
11607
[108]11608      </td>
11609
11610
[354]11611
11612
[108]11613 <td style="vertical-align: top;">R</td>
11614
11615
11616
[354]11617
11618
[108]11619      <td style="vertical-align: top;"><i>9999999.9</i></td>
11620
11621
11622
[354]11623
11624
[108]11625      <td style="vertical-align: top;"> 
11626     
11627     
[354]11628     
11629     
[108]11630      <p><font face="Thorndale, serif"><span lang="en-GB">Temporal
[5]11631interval at
[48]11632which particles are to be released <span lang="en-GB">from
11633a particle
11634source </span>(</span></font>in <font face="Thorndale, serif"><span lang="en-GB">s).</span>&nbsp;
[108]11635      </font> </p>
11636
11637
[354]11638
11639
[108]11640 
11641     
11642     
[354]11643     
11644     
[108]11645      <p><span lang="en-GB"><font face="Thorndale, serif">By default
[5]11646particles are released only at the beginning of a simulation
11647(t_init=0). The time of the first release (t_init) can be changed with
11648package parameter </font></span><span lang="en-GB"></span><font><a href="#particle_advection_start"><font face="Thorndale, serif">particle_advection_start</font></a>.
[108]11649      </font><span lang="en-GB"><font face="Thorndale, serif">The time of the last release can be
[48]11650set with the package parameter <a href="#end_time_prel">end_time_prel</a>.
11651If <span style="font-weight: bold;">dt_prel</span>
11652has been set, additional
[5]11653releases will be at t = t_init+<span style="font-weight: bold;">dt_prel</span>,
[48]11654t_init+2*<span style="font-weight: bold;">dt_prel</span>,
11655t_init+3*<span style="font-weight: bold;">dt_prel</span>,
11656etc.. Actual release times
11657may slightly deviate from thesel values (</font></span><span lang="en-GB"><font face="Thorndale, serif">see
11658e.g. </font></span><a href="#dt_dopr"><span lang="en-GB"><font face="Thorndale, serif">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale, serif">).</font></span></p>
[108]11659
11660
11661
[354]11662
11663
[108]11664     
11665     
[354]11666     
11667     
[108]11668      <p><span lang="en-GB"><font face="Thorndale, serif"> The domain
[48]11669of the particle <span lang="en-GB"><font face="Thorndale, serif">source </font></span>as
11670well as the distance of&nbsp; released particles
11671within this source </font></span><span lang="en-GB"><font face="Thorndale, serif">are determined via package
11672parameters </font></span><a href="#pst"><span lang="en-GB"><font face="Thorndale, serif">pst</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#psl"><span lang="en-GB"><font face="Thorndale, serif">psl</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#psr"><span lang="en-GB"><font face="Thorndale, serif">psr</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#pss"><span lang="en-GB"><font face="Thorndale, serif">pss</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#psn"><span lang="en-GB"><font face="Thorndale, serif">psn</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#psb"><span lang="en-GB"><font face="Thorndale, serif">psb</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#pdx"><span lang="en-GB"><font face="Thorndale, serif">pdx</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#pdy"><span lang="en-GB"><font face="Thorndale, serif">pdy</font></span></a>
[108]11673      <span lang="en-GB"><font face="Thorndale, serif">and
11674      </font></span><a href="#pdz"><span lang="en-GB"><font face="Thorndale, serif">pdz</font></span></a><span lang="en-GB"><font face="Thorndale, serif">.</font></span><span lang="en-GB"><font face="Thorndale, serif"> By
[48]11675default, one particle is released at all points defined by these
11676parameters. The package parameter <a href="#particles_per_point">particles_per_point</a>
11677can be used to start more than one particle per point.<br>
[108]11678
11679
11680
[354]11681
11682
[108]11683      </font></span></p>
11684
11685
[354]11686
11687
[108]11688 
11689     
11690     
[354]11691     
11692     
[108]11693      <p><span lang="en-GB"><font face="Thorndale, serif">Up to 10
[48]11694different groups of particles can be released at the same time (see </font></span><a href="chapter_4.2.html#number_of_particle_groups"><span lang="en-GB"><font face="Thorndale, serif">number_of_particle_groups</font></span></a><span lang="en-GB"><font face="Thorndale, serif">)
11695where each group may have a different source. All particles belonging
11696to one group have the same density ratio and the same radius. All other
11697particle features (e.g. location of the source) are
[108]11698identical for all groups of particles.</font></span></p>
11699
11700
[354]11701
11702
[108]11703Subgrid
[5]11704scale velocities can (optionally) be included for calculating the
11705particle advection, using the method of Weil et al. (2004, JAS, 61,
117062877-2887). This method is switched on by the package
[48]11707parameter <a href="#use_sgs_for_particles">use_sgs_for_particles</a>.
11708This also forces the Euler/upstream method to be used for time
11709advancement of the TKE (see initialization parameter <a href="chapter_4.1.html#use_upstream_for_tke">use_upstream_for_tke</a>).
11710The minimum timestep during the sub-timesteps is controlled by package
[108]11711parameter <a href="#dt_min_part">dt_min_part</a>.
11712     
11713     
[354]11714     
11715     
[108]11716      <p><span lang="en-GB"><font face="Thorndale, serif">By
[5]11717default, particles are weightless and transported passively with the
11718resolved scale flow. Particles can be given a mass and thus an inertia
11719by assigning the
[48]11720package parameter </font></span><a href="#density_ratio"><span lang="en-GB"><font face="Thorndale, serif">density_ratio</font></span></a><span lang="en-GB"><font face="Thorndale, serif"> a
11721non-zero value (it
[5]11722defines the ratio of the density of the fluid and the density of the
11723particles). In these cases their </font></span><a href="#radius"><span lang="en-GB"><font face="Thorndale, serif">radius</font></span></a><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale, serif">
11724must also be defined, which affects their flow resistance. </font></span><a href="#diameter"><span lang="en-GB"></span></a><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale, serif"> </font></span> </p>
[108]11725
11726
11727
[354]11728
11729
[108]11730     
11731     
[354]11732     
11733     
[108]11734      <p><span lang="en-GB"><font face="Thorndale, serif">Boundary
[5]11735conditions for the particle transport can be defined with package
11736parameters </font></span><a href="#bc_par_t"><span lang="en-GB"><font face="Thorndale, serif">bc_par_t</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="#bc_par_lr"><span lang="en-GB"><font face="Thorndale, serif">bc_par_lr</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="bc_par_ns"><span lang="en-GB"><font face="Thorndale, serif">bc_par_ns</font></span></a>
[108]11737      <span lang="en-GB"><font face="Thorndale, serif">and
11738      </font></span><a href="#bc_par_b"><span lang="en-GB"><font face="Thorndale, serif">bc_par_b</font></span></a><span lang="en-GB"><font face="Thorndale, serif">.</font></span></p>
11739
11740
[354]11741
11742
[108]11743      <span lang="en-GB"><font face="Thorndale, serif">Timeseries
[48]11744of particle quantities in NetCDF format can be output to local file <a href="chapter_3.4.html#DATA_1D_PTS_NETCDF">DATA_1D_PTS_NETCDF</a>
[108]11745by using package parameter <a href="#dt_dopts">dt_dopts</a>.<br>
11746
11747
[354]11748
11749
[108]11750      </font></span>
11751     
11752     
[354]11753     
11754     
[108]11755      <p>For
[48]11756analysis, additional output of
[5]11757particle
11758information in equidistant temporal intervals can be carried out using <a href="#dt_write_particle_data">dt_write_particle_data</a>
11759(file <a href="chapter_3.4.html#PARTICLE_DATA">PARTICLE_DATA</a>).<br>
[108]11760
11761
11762
[354]11763
11764
[108]11765      </p>
11766
11767
[354]11768
11769
[108]11770 
11771     
11772     
[354]11773     
11774     
[108]11775      <p><span style="font-family: thorndale,serif;">Statistical
[5]11776informations</span> (e.g. the total number of particles used, the
11777number of particles exchanged between the PEs, etc.) are output to the
11778local file <a href="chapter_3.4.html#PARTICLE_DATA">PARTICLE_INFOS</a>,
11779if switched on by the parameter <a href="#write_particle_statistics">write_particle_statistics</a>.
[108]11780      <br>
11781
11782
[354]11783
11784
[108]11785 </p>
11786
11787
[354]11788
11789
[108]11790 
11791     
11792     
[354]11793     
11794     
[108]11795      <p><span lang="en-GB"><font face="Thorndale, serif">If a job
[5]11796chain is to be carried out, particle
[48]11797informations </font></span><span lang="en-GB"><font face="Thorndale, serif">for the restart run (e.g. current
11798location of
[5]11799all
11800particles at the end of the
11801run) is output to
[48]11802the local file</font></span> <font><a href="chapter_4.2.html#dt_dvrp"><span lang="en-GB"></span></a></font><a href="chapter_3.4.html#PARTICLE_RESTART_DATA_OUT">PARTICLE_RESTART_DATA_OUT</a><font><a href="chapter_4.2.html#dt_dvrp"><span lang="en-GB"></span></a></font>,
[108]11803      <span lang="en-GB"><font face="Thorndale, serif">which
[48]11804must be saved at the
11805end of the run <tt><span lang="en-GB"></span></tt>and
11806given as an
[5]11807input file to the restart run
11808under local file name</font></span> <a href="chapter_3.4.html#PARTICLE_RESTART_DATA_IN">PARTICLE_RESTART_DATA_IN</a>
[48]11809u<span lang="en-GB"><font face="Thorndale, serif">sing
11810respective file
[5]11811connection statements in the <span style="font-weight: bold;">mrun</span>
[108]11812configuration file. </font></span> <span lang="en-GB"></span></p>
11813
11814
[354]11815
11816
[108]11817     
11818     
[354]11819     
11820     
[108]11821      <p><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale, serif">The output of
[48]11822particles for visualization with the graphic software <span style="font-weight: bold;">dvrp</span> is steered by
11823the package
11824parameter </font></span><a href="chapter_4.2.html#dt_dvrp"><span lang="en-GB"><font face="Thorndale, serif">dt_dvrp</font></span></a><font face="Thorndale, serif"><span lang="en-GB">.
11825For visualization
[5]11826purposes particles can be given a
[266]11827diameter using the parameters <a href="chapter_4.2.html#dvrp_psize">dvrp_psize</a>
11828and <a href="#particle_dvrpsize">particle_dvrpsize</a> (this diameter only affects the visualization). All particles have the
[5]11829same size. Alternatively, particles can be given an individual size and
[48]11830a </span>color <span lang="en-GB">by modifying the
11831user-interface (subroutine</span></font> <span style="font-family: monospace;">user_init_particles</span>)<span lang="en-GB"><font face="Thorndale, serif">.
11832Particles can pull a
[493]11833&#8220;tail&#8221; behind themselves to improve their
[48]11834visualization.
[108]11835This is steered via the parameter&nbsp;<a href="chapter_4.2.html#use_particle_tails">use_particle_tails</a>.</font></span><a href="chapter_4.2.html#maximum_number_of_tailpoints"><span lang="en-GB"></span></a></p>
11836
11837
[354]11838
11839
[108]11840 <span lang="en-GB"></span>
11841     
11842     
[354]11843     
11844     
[108]11845      <p><b>So far, the
[48]11846particle transport realized in PALM does only
[5]11847work
[108]11848duly in case of a constant vertical grid spacing!</b></p>
11849
11850
[354]11851
11852
[108]11853 </td>
11854
11855
11856
[354]11857
11858
[108]11859    </tr>
11860
11861
[354]11862
11863
[108]11864 <tr>
11865
11866
[354]11867
11868
[108]11869 <td style="vertical-align: top;">
11870     
11871     
[354]11872     
11873     
[108]11874      <p><a name="bc_par_b"></a><b>bc_par_b</b></p>
11875
11876
11877
[354]11878
11879
[108]11880      </td>
11881
11882
[354]11883
11884
[108]11885 <td style="vertical-align: top;">C*15</td>
11886
11887
11888
[354]11889
11890
[555]11891      <td style="vertical-align: top;"><i>ᅵreflectᅵ</i></td>
[108]11892
11893
11894
[354]11895
11896
[108]11897      <td style="vertical-align: top;"> 
11898     
11899     
[354]11900     
11901     
[108]11902      <p>Bottom
11903boundary condition for particle transport. </p>
11904
11905
[354]11906
11907
[108]11908 
11909     
11910     
[354]11911     
11912     
[108]11913      <p>By
[48]11914default, particles are reflected at the bottom boundary.
[5]11915Alternatively, a particle absorption can set by <b>bc_par_b</b>
[555]11916= <i>ᅵabsorbᅵ</i>.</p>
[108]11917
11918
[354]11919
11920
[108]11921 </td>
11922
11923
11924
[354]11925
11926
[108]11927    </tr>
11928
11929
[354]11930
11931
[108]11932 <tr>
11933
11934
[354]11935
11936
[108]11937 <td style="vertical-align: top;">
11938     
11939     
[354]11940     
11941     
[108]11942      <p><a name="bc_par_lr"></a><b>bc_par_lr</b></p>
11943
11944
11945
[354]11946
11947
[108]11948      </td>
11949
11950
[354]11951
11952
[108]11953 <td style="vertical-align: top;">C*15</td>
11954
11955
11956
[354]11957
11958
[555]11959      <td style="vertical-align: top;"><i>ᅵcyclicᅵ</i></td>
[108]11960
11961
11962
[354]11963
11964
[108]11965      <td style="vertical-align: top;"> 
11966     
11967     
[354]11968     
11969     
[108]11970      <p>Lateral
[48]11971boundary condition (x-direction) for particle
[108]11972transport. </p>
11973
11974
[354]11975
11976
[108]11977 
11978     
11979     
[354]11980     
11981     
[108]11982      <p>By default, cyclic boundary conditions
[48]11983are used along x.
[5]11984Alternatively, reflection (<b>bc_par_lr</b>
[555]11985= <i>ᅵreflectᅵ</i>) or absorption (<b>bc_par_lr</b>
11986= <i>ᅵabsorbᅵ</i>)
[108]11987can be set. <br>
11988
11989
[354]11990
11991
[108]11992 </p>
11993
11994
[354]11995
11996
[108]11997 
11998     
11999     
[354]12000     
12001     
[108]12002      <p>This lateral boundary
[48]12003conditions should correspond to the
[108]12004lateral boundary condition used for the flow (see <a href="chapter_4.1.html#bc_lr">bc_lr</a>).</p>
12005
12006
[354]12007
12008
[108]12009 </td>
12010
12011
12012
[354]12013
12014
[108]12015    </tr>
12016
12017
[354]12018
12019
[108]12020 <tr>
12021
12022
[354]12023
12024
[108]12025 <td style="vertical-align: top;">
12026     
12027     
[354]12028     
12029     
[108]12030      <p><a name="bc_par_ns"></a><b>bc_par_ns</b></p>
12031
12032
12033
[354]12034
12035
[108]12036      </td>
12037
12038
[354]12039
12040
[108]12041 <td style="vertical-align: top;">C*15</td>
12042
12043
12044
[354]12045
12046
[555]12047      <td style="vertical-align: top;"><i>ᅵcyclicᅵ</i></td>
[108]12048
12049
12050
[354]12051
12052
[108]12053      <td style="vertical-align: top;"> 
12054     
12055     
[354]12056     
12057     
[108]12058      <p>Lateral
[48]12059boundary condition (y-direction) for particle
[108]12060transport. </p>
12061
12062
[354]12063
12064
[108]12065 
12066     
12067     
[354]12068     
12069     
[108]12070      <p>By default, cyclic boundary conditions
[48]12071are used along y.
[5]12072Alternatively, reflection (<b>bc_par_ns</b>
[555]12073= <i>ᅵreflectᅵ</i>) or absorption (<b>bc_par_ns</b>
12074= <i>ᅵabsorbᅵ</i>)
[108]12075can be set.<br>
12076
12077
[354]12078
12079
[108]12080 </p>
12081
12082
12083
[354]12084
12085
[5]12086This lateral boundary conditions should correspond to the lateral
[108]12087boundary condition used for the flow (see <a href="chapter_4.1.html#bc_ns">bc_ns</a>).</td>
12088
12089
[354]12090
12091
[108]12092 </tr>
12093
12094
12095
[354]12096
12097
[108]12098    <tr>
12099
12100
[354]12101
12102
[108]12103 <td style="vertical-align: top;"> 
12104     
12105     
[354]12106     
12107     
[108]12108      <p><a name="bc_par_t"></a><b>bc_par_t</b></p>
12109
12110
12111
[354]12112
12113
[108]12114      </td>
12115
12116
[354]12117
12118
[108]12119 <td style="vertical-align: top;">C*15</td>
12120
12121
12122
[354]12123
12124
[555]12125      <td style="vertical-align: top;"><i>ᅵabsorbᅵ</i></td>
[108]12126
12127
12128
[354]12129
12130
[108]12131      <td style="vertical-align: top;"> 
12132     
12133     
[354]12134     
12135     
[108]12136      <p>Top boundary
12137condition for particle transport. </p>
12138
12139
[354]12140
12141
[108]12142 
12143     
12144     
[354]12145     
12146     
[108]12147      <p>By default,
[48]12148particles are absorbed at the top boundary.
[5]12149Alternatively, a reflection condition can be set by <b>bc_par_t</b>
[555]12150= <i>ᅵreflectᅵ</i>.</p>
[108]12151
12152
[354]12153
12154
[108]12155 </td>
12156
12157
12158
[354]12159
12160
[108]12161    </tr>
12162
12163
[354]12164
12165
[108]12166 <tr>
12167
12168
[354]12169
12170
[108]12171 <td style="vertical-align: top;">
12172     
12173     
[354]12174     
12175     
[108]12176      <p><a name="density_ratio"></a><b>density_ratio</b></p>
12177
12178
12179
[354]12180
12181
[108]12182      </td>
12183
12184
[354]12185
12186
[108]12187 <td style="vertical-align: top;">R (10)</td>
12188
12189
12190
[354]12191
12192
[108]12193      <td style="vertical-align: top;"> 
12194     
12195     
[354]12196     
12197     
[108]12198      <p><i>0.0, 9</i>
12199*<br>
12200
12201
[354]12202
12203
[108]12204 <i>9999999.9</i></p>
12205
12206
[354]12207
12208
[108]12209 </td>
12210
12211
[354]12212
12213
[108]12214 <td style="vertical-align: top;"> 
12215     
12216     
[354]12217     
12218     
[108]12219      <p>Ratio of the density
[48]12220of the fluid and the density of the
[108]12221particles. </p>
12222
12223
[354]12224
12225
[108]12226 
12227     
12228     
[354]12229     
12230     
[108]12231      <p>With the default value<i> </i>the
[5]12232particles are weightless and transported passively with the resolved
12233scale flow.
[48]12234In case of <span style="font-weight: bold;">density_ratio</span>
12235/=
[5]122360.0 particles have a mass and hence inertia so that their velocity
12237deviates more or less from the velocity of the surrounding flow.
12238Particle velocity is calculated analytically and depends on (besides
12239the density ratio and the current velocity difference between particles
12240and surrounding fluid) the
12241particle radius which is determined via <a href="#radius">radius</a>
12242as well as on the molecular viscosity (assumed as 1.461E-5 m<sup>2</sup>/s).
[108]12243      </p>
12244
12245
[354]12246
12247
[108]12248 
12249     
12250     
[354]12251     
12252     
[108]12253      <p>If <b>density_ratio</b> = <i>1.0</i>,
[48]12254the particle density
[5]12255corresponds to the density of the surrounding fluid and the particles
12256do not feel any buoyancy. Otherwise, particles will be accelerated
12257upwards (<b>density_ratio</b> &gt; <i>1.0</i>)
12258or downwards (<b>density_ratio</b> &lt; <i>1.0</i>).<br>
[108]12259
12260
12261
[354]12262
12263
[108]12264      </p>
12265
12266
[354]12267
12268
[108]12269 
12270     
12271     
[354]12272     
12273     
[108]12274      <p>With several groups of particles (see <a href="chapter_4.2.html#number_of_particle_groups">number_of_particle_groups</a>),
[48]12275each group can be assigned a different value. If the number of values
12276given for <span style="font-weight: bold;">density_ratio</span>
12277is less than the number of
[5]12278groups defined by <span style="font-weight: bold;">number_of_particle_groups</span>,
12279then the last assigned value is used for all remaining groups. This
[48]12280means that by default the particle density ratio for all groups will be
[108]12281      <span style="font-style: italic;">0.0</span>.</p>
12282
12283
12284
[354]12285
12286
[108]12287      </td>
12288
12289
[354]12290
12291
[108]12292 </tr>
12293
12294
[354]12295
12296
[108]12297 <tr>
12298
12299
[354]12300
12301
[108]12302      <td align="left" valign="top"><a name="dt_dopts"></a><span style="font-weight: bold;">dt_dopts</span></td>
12303
12304
[354]12305
12306
[108]12307      <td align="left" valign="top">R</td>
12308
12309
[354]12310
12311
[108]12312      <td align="left" valign="top"><i>value of &nbsp;<a href="chapter_4.2.html#dt_data_output">dt_data_<br>
12313
12314
[354]12315
12316
[108]12317output</a></i></td>
12318
12319
[354]12320
12321
[108]12322      <td align="left" valign="top">
12323     
12324     
[354]12325     
12326     
[108]12327      <p lang="en-GB"><font face="Thorndale"><font face="Thorndale, serif">Temporal
[48]12328interval</font> at which time series data of particle quantities
12329shall be output (</font>in <font face="Thorndale">s).&nbsp;</font></p>
[108]12330
12331
12332
[354]12333
12334
[108]12335      <span lang="en-GB"><font face="Thorndale">If
[48]12336particle advection is switched on (see</font></span><font><span style="font-family: thorndale;"> <a href="#dt_prel">dt_prel</a>)
12337this parameter can be used to assign
[5]12338th</span></font><span lang="en-GB"><font face="Thorndale">e temporal
[48]12339interval at which time series of particle quantities shall be output.
[108]12340Output is written in NetCDF format on local file <a href="chapter_3.4.html#DATA_1D_PTS_NETCDF">DATA_1D_PTS_NETCDF</a>.<br>
12341
12342
[354]12343
12344
[108]12345      <br>
12346
12347
[354]12348
12349
[108]12350The
[5]12351following list gives a short description of the&nbsp;quantities
12352available. Most quantities are averages over all particles. The
12353quantity name given in the first column is identical to the respective
[48]12354name of the variable on the NetCDF file (see section <a href="chapter_4.5.1.html">4.5.1</a> for a general
[108]12355description of the NetCDF files).<br>
12356
12357
[354]12358
12359
[108]12360      <br>
12361
12362
[354]12363
12364
[108]12365In case of using
[48]12366more than one particle group (see <a href="#number_of_particle_groups">number_of_particle_groups</a>),
[5]12367seperate time series are output for each of the groups. The long names
12368of the variables in the NetCDF file containing the respective
[48]12369timeseries all end with the string</font><span style="font-style: italic; font-family: monospace;">' PG ##'</span><font face="Thorndale">, where ## is the number of the particle
[108]12370group (<span style="font-style: italic;">01</span>, <span style="font-style: italic;">02</span>, etc.). <br>
12371
12372
[354]12373
12374
[108]12375&nbsp;</font></span>
12376     
12377     
[354]12378     
12379     
[108]12380      <table style="text-align: left; width: 631px; height: 652px;" border="1" cellpadding="2" cellspacing="2">
12381
12382
[354]12383
12384
[108]12385        <tbody>
12386
12387
[354]12388
12389
[108]12390          <tr>
12391
12392
[354]12393
12394
[108]12395            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">tnpt</span></td>
12396
12397
[354]12398
12399
[108]12400            <td align="undefined" valign="undefined">total number of
12401particles</td>
12402
12403
[354]12404
12405
[108]12406          </tr>
12407
12408
[354]12409
12410
[108]12411          <tr>
12412
12413
[354]12414
12415
[108]12416            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">x_</span></td>
12417
12418
[354]12419
12420
[108]12421            <td align="undefined" valign="undefined">particle
12422x-coordinate&nbsp;with respect to the particle origin (in m)</td>
12423
12424
[354]12425
12426
[108]12427          </tr>
12428
12429
[354]12430
12431
[108]12432          <tr>
12433
12434
[354]12435
12436
[108]12437            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">y_</span></td>
12438
12439
[354]12440
12441
[108]12442            <td align="undefined" valign="undefined">particle
12443y-coordinate&nbsp;with respect to the particle origin (in m)</td>
12444
12445
[354]12446
12447
[108]12448          </tr>
12449
12450
[354]12451
12452
[108]12453          <tr>
12454
12455
[354]12456
12457
[108]12458            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">z_</span></td>
12459
12460
[354]12461
12462
[108]12463            <td align="undefined" valign="undefined">particle
12464z-coordinate&nbsp;with respect to the particle origin (in m)</td>
12465
12466
[354]12467
12468
[108]12469          </tr>
12470
12471
[354]12472
12473
[108]12474          <tr>
12475
12476
[354]12477
12478
[108]12479            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">z_abs</span></td>
12480
12481
[354]12482
12483
[108]12484            <td align="undefined" valign="undefined">absolute
12485particle z-coordinate (in m)</td>
12486
12487
[354]12488
12489
[108]12490          </tr>
12491
12492
[354]12493
12494
[108]12495          <tr>
12496
12497
[354]12498
12499
[108]12500            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">u</span></td>
12501
12502
[354]12503
12504
[108]12505            <td align="undefined" valign="undefined">u particle
12506velocity component (in m/s)</td>
12507
12508
[354]12509
12510
[108]12511          </tr>
12512
12513
[354]12514
12515
[108]12516          <tr>
12517
12518
[354]12519
12520
[108]12521            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">v</span></td>
12522
12523
[354]12524
12525
[108]12526            <td align="undefined" valign="undefined">v particle
12527velocity component (in m/s)</td>
12528
12529
[354]12530
12531
[108]12532          </tr>
12533
12534
[354]12535
12536
[108]12537          <tr>
12538
12539
[354]12540
12541
[108]12542            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">w</span></td>
12543
12544
[354]12545
12546
[108]12547            <td align="undefined" valign="undefined">w particle
12548velocity component (in m/s)</td>
12549
12550
[354]12551
12552
[108]12553          </tr>
12554
12555
[354]12556
12557
[108]12558          <tr>
12559
12560
[354]12561
12562
[108]12563            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">u"</span></td>
12564
12565
[354]12566
12567
[108]12568            <td align="undefined" valign="undefined">subgrid-scale u
12569particle velocity component (in m/s)</td>
12570
12571
[354]12572
12573
[108]12574          </tr>
12575
12576
[354]12577
12578
[108]12579          <tr>
12580
12581
[354]12582
12583
[108]12584            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">v"</span></td>
12585
12586
[354]12587
12588
[108]12589            <td align="undefined" valign="undefined">subgrid-scale v
12590particle velocity component (in m/s)</td>
12591
12592
[354]12593
12594
[108]12595          </tr>
12596
12597
[354]12598
12599
[108]12600          <tr>
12601
12602
[354]12603
12604
[108]12605            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">w"</span></td>
12606
12607
[354]12608
12609
[108]12610            <td align="undefined" valign="undefined">subgrid-scale w
12611particle velocity component (in m/s)</td>
12612
12613
[354]12614
12615
[108]12616          </tr>
12617
12618
[354]12619
12620
[108]12621          <tr>
12622
12623
[354]12624
12625
[108]12626            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">npt_up</span></td>
12627
12628
[354]12629
12630
[108]12631            <td align="undefined" valign="undefined">total number of
12632upward moving particles</td>
12633
12634
[354]12635
12636
[108]12637          </tr>
12638
12639
[354]12640
12641
[108]12642          <tr>
12643
12644
[354]12645
12646
[108]12647            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">w_up</span></td>
12648
12649
[354]12650
12651
[108]12652            <td align="undefined" valign="undefined">vertical
12653velocity of the upward moving particles (in m/s)</td>
12654
12655
[354]12656
12657
[108]12658          </tr>
12659
12660
[354]12661
12662
[108]12663          <tr>
12664
12665
[354]12666
12667
[108]12668            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">w_down</span></td>
12669
12670
[354]12671
12672
[108]12673            <td align="undefined" valign="undefined">vertical
12674velocity of the downward moving particles (in m/s)</td>
12675
12676
[354]12677
12678
[108]12679          </tr>
12680
12681
[354]12682
12683
[108]12684          <tr>
12685
12686
[354]12687
12688
[108]12689            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">npt_max</span></td>
12690
12691
[354]12692
12693
[108]12694            <td align="undefined" valign="undefined">maximum number
12695of particles in a subdomain (=tnpt for non-parallel runs)</td>
12696
12697
[354]12698
12699
[108]12700          </tr>
12701
12702
[354]12703
12704
[108]12705          <tr>
12706
12707
[354]12708
12709
[108]12710            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">npt_min</span></td>
12711
12712
[354]12713
12714
[108]12715            <td align="undefined" valign="undefined">minimum number
12716of particles in a subdomain (=tnpt for non-parallel runs)</td>
12717
12718
[354]12719
12720
[108]12721          </tr>
12722
12723
[354]12724
12725
[108]12726          <tr>
12727
12728
[354]12729
12730
[108]12731            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">x*2</span></td>
12732
12733
[354]12734
12735
[108]12736            <td align="undefined" valign="undefined">variance of the
12737particle x-coordinate&nbsp;with respect to <span style="color: rgb(255, 0, 0);">x_ </span>(in m<sup>2</sup>)</td>
12738
12739
[354]12740
12741
[108]12742          </tr>
12743
12744
[354]12745
12746
[108]12747          <tr>
12748
12749
[354]12750
12751
[108]12752            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">y*2</span></td>
12753
12754
[354]12755
12756
[108]12757            <td align="undefined" valign="undefined">variance of the
12758particle y-coordinate&nbsp;with respect to <span style="color: rgb(255, 0, 0);">y_</span> (in m<sup>2</sup>)</td>
12759
12760
[354]12761
12762
[108]12763          </tr>
12764
12765
[354]12766
12767
[108]12768          <tr>
12769
12770
[354]12771
12772
[108]12773            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">z*2</span></td>
12774
12775
[354]12776
12777
[108]12778            <td align="undefined" valign="undefined">variance of the
12779particle z-coordinate&nbsp;with respect to <span style="color: rgb(255, 0, 0);">z_</span> (in m<sup>2</sup>)</td>
12780
12781
[354]12782
12783
[108]12784          </tr>
12785
12786
[354]12787
12788
[108]12789          <tr>
12790
12791
[354]12792
12793
[108]12794            <td align="undefined" valign="undefined"><span style="color: rgb(255, 0, 0);">u*2</span></td>
12795
12796
[354]12797
12798
[108]12799            <td align="undefined" valign="undefined">variance of the
12800u particle velocity component with respect to <span style="color: rgb(255, 0, 0);">u </span>(in m<sup>2</sup>/s<sup>2</sup>)</td>
12801
12802
[354]12803
12804
[108]12805          </tr>
12806
12807
[354]12808
12809
[108]12810          <tr>
12811
12812
[354]12813
12814
[108]12815            <td align="undefined" valign="undefined">v*2</td>
12816
12817
[354]12818
12819
[108]12820            <td align="undefined" valign="undefined">variance of the
12821v particle velocity component with respect to&nbsp;<span style="color: rgb(255, 0, 0);">v </span>(in m<sup>2</sup>/s<sup>2</sup>)</td>
12822
12823
[354]12824
12825
[108]12826          </tr>
12827
12828
[354]12829
12830
[108]12831          <tr>
12832
12833
[354]12834
12835
[108]12836            <td align="undefined" valign="undefined">w*2</td>
12837
12838
[354]12839
12840
[108]12841            <td align="undefined" valign="undefined">variance of the
12842w particle velocity component with respect to&nbsp;<span style="color: rgb(255, 0, 0);">w </span>(in m<sup>2</sup>/s<sup>2</sup>)</td>
12843
12844
[354]12845
12846
[108]12847          </tr>
12848
12849
[354]12850
12851
[108]12852          <tr>
12853
12854
[354]12855
12856
[108]12857            <td align="undefined" valign="undefined">u"2</td>
12858
12859
[354]12860
12861
[108]12862            <td align="undefined" valign="undefined">variance of the
12863subgrid-scale u particle velocity component with respect to <span style="color: rgb(255, 0, 0);">u" </span>(in m<sup>2</sup>/s<sup>2</sup>)</td>
12864
12865
[354]12866
12867
[108]12868          </tr>
12869
12870
[354]12871
12872
[108]12873          <tr>
12874
12875
[354]12876
12877
[108]12878            <td align="undefined" valign="undefined">v"2</td>
12879
12880
[354]12881
12882
[108]12883            <td align="undefined" valign="undefined">variance of the
12884subgrid-scale v particle velocity component with respect to <span style="color: rgb(255, 0, 0);">v" </span>(in m<sup>2</sup>/s<sup>2</sup>)</td>
12885
12886
[354]12887
12888
[108]12889          </tr>
12890
12891
[354]12892
12893
[108]12894          <tr>
12895
12896
[354]12897
12898
[108]12899            <td align="undefined" valign="undefined">w"2</td>
12900
12901
[354]12902
12903
[108]12904            <td align="undefined" valign="undefined">variance of the
12905subgrid-scale w particle velocity component with respect to <span style="color: rgb(255, 0, 0);">w" </span>(in m<sup>2</sup>/s<sup>2</sup>)</td>
12906
12907
[354]12908
12909
[108]12910          </tr>
12911
12912
[354]12913
12914
[108]12915          <tr>
12916
12917
[354]12918
12919
[108]12920            <td align="undefined" valign="undefined">npt*2</td>
12921
12922
[354]12923
12924
[108]12925            <td align="undefined" valign="undefined">variance of the
[48]12926number of particles with respect to the average number of particles per
[108]12927subdomain</td>
12928
12929
[354]12930
12931
[108]12932          </tr>
12933
12934
[354]12935
12936
[108]12937       
12938       
[354]12939       
12940       
[108]12941        </tbody>
12942     
12943     
[354]12944     
12945     
[108]12946      </table>
12947
12948
[354]12949
12950
[108]12951      <span lang="en-GB"></span><span lang="en-GB"></span></td>
12952
12953
[354]12954
12955
[108]12956    </tr>
12957
12958
[354]12959
12960
[108]12961    <tr>
12962
12963
[354]12964
12965
[108]12966      <td align="left" valign="top"><a name="dt_min_part"></a><span style="font-weight: bold;">dt_min_part</span></td>
12967
12968
[354]12969
12970
[108]12971      <td align="left" valign="top">R</td>
12972
12973
[354]12974
12975
[108]12976      <td align="left" valign="top"><span style="font-style: italic;">0.0002</span></td>
12977
12978
[354]12979
12980
[108]12981      <td align="left" valign="top">Minimum value for the
12982particle timestep when SGS velocities are used (in s).<br>
12983
12984
[354]12985
12986
[108]12987      <br>
12988
12989
[354]12990
12991
[108]12992For
12993a further explanation see package parameter <a href="#use_sgs_for_particles">use_sgs_for_particles</a>.</td>
12994
12995
[354]12996
12997
[108]12998    </tr>
12999
13000
[354]13001
13002
13003    <tr>
13004
13005      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="dt_sort_particles"></a>dt_sort_particles</span></td>
13006
13007      <td style="vertical-align: top;">R</td>
13008
13009      <td style="vertical-align: top;"><span style="font-style: italic;">0.0</span></td>
13010
13011      <td style="vertical-align: top;">Temporal interval for sorting particles (in s).<br>
13012
13013      <br>
13014
13015By
[116]13016default, particles are sorted in memory in a way that their order
13017follows the order in which the gridpoint values are stored. This may
13018improve cache coherence in case of larger numbers of particles and
13019gridpoints. However, since the sorting itself is time consuming and
13020since the requirement of sorting depends on the strength of mixing in
13021the flow, performance can be improved if the sorting is applied only
[354]13022after certain time intervals. The proper length of this interval <span style="font-weight: bold;">dt_sort_particles</span> must be determined empirically by carrying out test runs with different intervals. Check file <a href="chapter_3.4.html#CPU_MEASURES">CPU_MEASURES</a> to find the value of <span style="font-weight: bold;">dt_sort_particles</span> which gives the best performance.<br>
[108]13023
[354]13024      <br>
[108]13025
[354]13026      <span style="font-weight: bold;">Note:</span><br>
[108]13027
[354]13028In case of <a href="chapter_4.1.html#cloud_droplets">cloud_droplets</a> = <span style="font-style: italic;">.T.</span>, any given non-zero value of <span style="font-weight: bold;">dt_sort_particles</span> will be reset to zero and a corresponding warning message will appear in the job protocol.</td>
13029
13030    </tr>
13031
13032    <tr>
13033
13034
13035
13036
13037
[108]13038      <td style="vertical-align: top;"> 
13039     
13040     
[354]13041     
13042     
[108]13043      <p><a name="dt_write_particle_data"></a><b>dt_write_particle_</b>
13044      <b>data</b></p>
13045
13046
[354]13047
13048
[108]13049 </td>
13050
13051
[354]13052
13053
[108]13054 <td style="vertical-align: top;">R<br>
13055
13056
[354]13057
13058
[108]13059 </td>
13060
13061
[354]13062
13063
[108]13064 <td style="vertical-align: top;"><i>9999999.9</i></td>
13065
13066
13067
[354]13068
13069
[108]13070      <td style="vertical-align: top;"> 
13071     
13072     
[354]13073     
13074     
[108]13075      <p>Temporal
13076interval for output of particle data (in s). </p>
13077
13078
[354]13079
13080
[108]13081 
13082     
13083     
[354]13084     
13085     
[108]13086      <p>T<span lang="en-GB"></span><a href="#pr1d"><span lang="en-GB"></span></a><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">his
[5]13087parameter can be used to
13088assign the temporal interval at which particle data shall be output.</font></span>
13089Data are output to
13090the local file <a href="chapter_3.4.html#PARTICLE_DATA">PARTICLE_DATA</a>.
[108]13091      <span style="font-family: mon;">See the file description
[48]13092for more
[108]13093details about its format</span>. </p>
13094
13095
[354]13096
13097
[108]13098 
13099     
13100     
[354]13101     
13102     
[108]13103      <p>By
13104default, no particle data are output.</p>
13105
13106
[354]13107
13108
[108]13109 </td>
13110
13111
[354]13112
13113
[108]13114 </tr>
13115
13116
13117
[354]13118
13119
[266]13120   
[108]13121
13122
13123 <tr>
13124
13125
[354]13126
13127
[108]13128      <td align="left" valign="top"><a name="end_time_prel"></a><span style="font-weight: bold;">end_time_prel</span></td>
13129
13130
[354]13131
13132
[108]13133      <td align="left" valign="top">R</td>
13134
13135
[354]13136
13137
[108]13138      <td align="left" valign="top"><span style="font-style: italic;">9999999.9</span></td>
13139
13140
[354]13141
13142
[108]13143      <td align="left" valign="top">Time of the last release of
13144particles (in s).<br>
13145
13146
[354]13147
13148
[108]13149      <br>
13150
13151
[354]13152
13153
[108]13154See also <a href="#particle_advection_start">particle_advection_start</a>.</td>
13155
13156
[354]13157
13158
[108]13159    </tr>
13160
13161
[354]13162
13163
[108]13164    <tr>
13165
13166
13167
[354]13168
13169
[108]13170      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="initial_weighting_factor"></a>initial_weighting_factor</span></td>
13171
13172
13173
[354]13174
13175
[108]13176      <td style="vertical-align: top;">R<br>
13177
13178
[354]13179
13180
[108]13181 </td>
13182
13183
[354]13184
13185
[108]13186 <td style="vertical-align: top;"><span style="font-style: italic;">1.0</span><br>
13187
13188
[354]13189
13190
[108]13191 </td>
13192
13193
13194
[354]13195
13196
[108]13197      <td style="vertical-align: top;">Factor to define the real
13198number of initial droplets in a grid box.<br>
13199
13200
[354]13201
13202
[108]13203 <br>
13204
13205
13206
[354]13207
13208
[5]13209In case of explicitly simulating cloud droplets (see <a href="chapter_4.1.html#cloud_droplets">cloud_droplets</a>),
13210the real number of initial droplets in a grid box is equal to the
13211initial number of droplets in this box (defined by the particle source
13212parameters <span lang="en-GB"><font face="Thorndale, serif"> </font></span><a href="chapter_4.2.html#pst"><span lang="en-GB"><font face="Thorndale, serif">pst</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psl"><span lang="en-GB"><font face="Thorndale, serif">psl</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psr"><span lang="en-GB"><font face="Thorndale, serif">psr</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#pss"><span lang="en-GB"><font face="Thorndale, serif">pss</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psn"><span lang="en-GB"><font face="Thorndale, serif">psn</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psb"><span lang="en-GB"><font face="Thorndale, serif">psb</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#pdx"><span lang="en-GB"><font face="Thorndale, serif">pdx</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#pdy"><span lang="en-GB"><font face="Thorndale, serif">pdy</font></span></a>
[108]13213      <span lang="en-GB"><font face="Thorndale, serif">and
13214      </font></span><a href="chapter_4.2.html#pdz"><span lang="en-GB"><font face="Thorndale, serif">pdz</font></span></a><span lang="en-GB"></span><span lang="en-GB"></span>)
[48]13215times the <span style="font-weight: bold;">initial_weighting_factor</span>.</td>
[108]13216
13217
13218
[354]13219
13220
[108]13221    </tr>
13222
13223
[354]13224
13225
[108]13226    <tr>
13227
13228
[354]13229
13230
[108]13231 <td style="vertical-align: top;"> 
13232     
13233     
[354]13234     
13235     
[108]13236      <p><a name="maximum_number_of_particles"></a><b>maximum_number_of_</b>
13237      <br>
13238
13239
[354]13240
13241
[108]13242 <b>particles</b></p>
13243
13244
[354]13245
13246
[108]13247 </td>
13248
13249
[354]13250
13251
[108]13252 <td style="vertical-align: top;">I</td>
13253
13254
[354]13255
13256
[108]13257 <td style="vertical-align: top;"><i>1000</i></td>
13258
13259
13260
[354]13261
13262
[108]13263      <td style="vertical-align: top;"> 
13264     
13265     
[354]13266     
13267     
[108]13268      <p>Maximum number
13269of particles (on a PE).&nbsp; </p>
13270
13271
[354]13272
13273
[108]13274 
13275     
13276     
[354]13277     
13278     
[108]13279      <p>This parameter
[48]13280allows to set the number of particles for which
[5]13281memory must be allocated at the beginning of the run.
13282If this memory becomes insufficient during the run, due to the
13283release of further particles (see <a href="#dt_prel">dt_prel</a>),
[108]13284then more memory is automatically allocated.<br>
13285
13286
[354]13287
13288
[108]13289 </p>
13290
13291
13292
[354]13293
13294
[5]13295For runs on several processors, <span style="font-weight: bold;">maximum_number_of_particles</span>
13296defines
13297the maximum number on each PE. This number must be larger than the
13298maximum number of particles initially released in a subdomain.</td>
[108]13299
13300
13301
[354]13302
13303
[108]13304    </tr>
13305
13306
[354]13307
13308
[108]13309 <tr>
13310
13311
[354]13312
13313
[108]13314 <td style="vertical-align: top;">
13315     
13316     
[354]13317     
13318     
[108]13319      <p><a name="maximum_number_of_tailpoints"></a><b>maximum_number_of_</b>
13320      <br>
13321
13322
[354]13323
13324
[108]13325 <b>tailpoints</b></p>
13326
13327
[354]13328
13329
[108]13330 </td>
13331
13332
[354]13333
13334
[108]13335 <td style="vertical-align: top;">I</td>
13336
13337
[354]13338
13339
[108]13340 <td style="vertical-align: top;"><i>100</i></td>
13341
13342
13343
[354]13344
13345
[108]13346      <td style="vertical-align: top;"> 
13347     
13348     
[354]13349     
13350     
[108]13351      <p>Maximum number
[48]13352of tailpoints that a particle tail can
[108]13353have.&nbsp; </p>
13354
13355
[354]13356
13357
[108]13358 
13359     
13360     
[354]13361     
13362     
[108]13363      <p>&nbsp;<b>maximum_number_of_tailpoints</b>
[5]13364sets the number of descrete points the tail consists of. A new point is
13365added to the particle tails after each time step. If the maximum number
13366of tail
13367points is reached after the corresponding number of timesteps, the
13368oldest respective tail points is deleted within the following
[108]13369timestep.&nbsp; </p>
13370
13371
[354]13372
13373
[108]13374 
13375     
13376     
[354]13377     
13378     
[108]13379      <p>All particle tails have the
[48]13380same number of points. The maximum
[5]13381length of
13382these
13383tails is determined by the value of <b>maximum_number_of_tailpoints</b>
13384and by the minimum distance between each of the adjoining
13385tailpoints,&nbsp; which can be set by <a href="#minimum_tailpoint_distance">minimum_tailpoint_distance</a>.
13386Additionally, it can be determined that the temporal displacement
13387between the current position of the particle and the oldest point of
13388the tail may become not larger than a value to be assigned by <a href="#maximum_tailpoint_age">maximum_tailpoint_age</a>.</p>
[108]13389
13390
13391
[354]13392
13393
[108]13394      </td>
13395
13396
[354]13397
13398
[108]13399 </tr>
13400
13401
[354]13402
13403
[108]13404 <tr>
13405
13406
[354]13407
13408
[108]13409 <td style="vertical-align: top;"> 
13410     
13411     
[354]13412     
13413     
[108]13414      <p><a name="maximum_tailpoint_age"></a><b>maximum_tailpoint_</b>
13415      <br>
13416
13417
[354]13418
13419
[108]13420 <b>age</b></p>
13421
13422
[354]13423
13424
[108]13425 </td>
13426
13427
[354]13428
13429
[108]13430 <td style="vertical-align: top;">R</td>
13431
13432
[354]13433
13434
[108]13435 <td style="vertical-align: top;">100000.0</td>
13436
13437
[354]13438
13439
[108]13440 <td style="vertical-align: top;"> 
13441     
13442     
[354]13443     
13444     
[108]13445      <p>Maximum age that the
[48]13446end point of a particle tail is allowed to have (in s).&nbsp; </p>
[108]13447
13448
13449
[354]13450
13451
[108]13452     
13453     
[354]13454     
13455     
[108]13456      <p>If the temporal displacement between the oldest point of a
[5]13457particle tail and the current position of the particle becomes larger
[48]13458than the value given by <b>maximum_tailpoint_age</b>, this
13459oldest
[5]13460point (which defines the end of the tail) is
13461removed. If this time is so small that the number of points defining
13462the particle tail do not exceed the value given by <b>maximum_number_of_tailpoints</b>,
13463then the length the particle tails is a measure for the distance the
13464particle travelled along during the time interval defined via <b>maximum_tailpoint_age</b>,
13465i.e. for the
13466particle velocity. Fast particles will have long tails, slow particles
13467shorter ones (note: this will not neccessarily hold if <a href="#minimum_tailpoint_distance">minimum_tailpoint_distance</a>
[108]13468= <i>0.0</i>).</p>
13469
13470
[354]13471
13472
[108]13473 </td>
13474
13475
[354]13476
13477
[108]13478 </tr>
13479
13480
[354]13481
13482
[108]13483 <tr>
13484
13485
13486
[354]13487
13488
[108]13489      <td style="vertical-align: top;"> 
13490     
13491     
[354]13492     
13493     
[108]13494      <p><a name="minimum_tailpoint_distance"></a><b>minimum_tailpoint_distance</b></p>
13495
13496
13497
[354]13498
13499
[108]13500      </td>
13501
13502
[354]13503
13504
[108]13505 <td style="vertical-align: top;">R</td>
13506
13507
13508
[354]13509
13510
[108]13511      <td style="vertical-align: top;"><i>0.0</i></td>
13512
13513
13514
[354]13515
13516
[108]13517      <td style="vertical-align: top;"> 
13518     
13519     
[354]13520     
13521     
[108]13522      <p>Minimum
[48]13523distance allowed between two adjacent points of a
[108]13524particle tail (in m).&nbsp; </p>
13525
13526
[354]13527
13528
[108]13529 
13530     
13531     
[354]13532     
13533     
[108]13534      <p>In case of <b>minimum_tailpoint_distance</b>
[48]13535&gt; <i>0.0 </i>the
[5]13536particle tail is extended by a new point only if the distance between
13537its current position and the most recent tail point exceed the
13538distance given via <b>minimum_tailpoint_distance</b>.<br>
[108]13539
13540
13541
[354]13542
13543
[108]13544      </p>
13545
13546
[354]13547
13548
[108]13549 
13550     
13551     
[354]13552     
13553     
[108]13554      <p>If the length of the particle tails shall be
[48]13555proportional to
[5]13556the respective particle velocity, the parameter <a href="#maximum_tailpoint_age">maximum_tailpoint_age</a>
[108]13557must also be set appropriately. </p>
13558
13559
[354]13560
13561
[108]13562 <b>Note:</b><br>
13563
13564
13565
[354]13566
13567
[5]13568A suitable choice of <b>minimum_tailpoint_distance</b>
[48]13569&gt; <i>0.0</i> is recommended, because then the tail
13570coordinates of
[5]13571slowly moving particles require less memory and can also be drawn
13572faster. The upper limit of <b>minimum_tailpoint_distance</b>
13573should be chosen in a way that the visualized particle
13574tails still appear as smooth lines. Example: with a model domain of
135751000 m and a monitor resolution of 1280 * 1024 pixels it
[48]13576should be sufficient to set <b>minimum_tailpoint_distance</b>
13577= <i>5.0</i>
[108]13578(m). </td>
13579
13580
[354]13581
13582
[108]13583 </tr>
13584
13585
[354]13586
13587
[108]13588 <tr>
13589
13590
[354]13591
13592
[108]13593 <td style="vertical-align: top;"><a name="number_of_particle_groups"></a><span style="font-weight: bold;">number_of_particle_groups</span><br>
13594
13595
13596
[354]13597
13598
[108]13599      </td>
13600
13601
[354]13602
13603
[108]13604 <td style="vertical-align: top;">I<br>
13605
13606
[354]13607
13608
[108]13609 </td>
13610
13611
13612
[354]13613
13614
[108]13615      <td style="vertical-align: top;">1<br>
13616
13617
[354]13618
13619
[108]13620 </td>
13621
13622
[354]13623
13624
[108]13625 <td style="vertical-align: top;">Number of particle groups to be
13626used.<br>
13627
13628
[354]13629
13630
[108]13631 <br>
13632
13633
13634
[354]13635
13636
[48]13637Each particle group can be assigned its own source region (see <a href="#pdx">pdx</a>, <a href="#psl">psl</a>,
[108]13638      <a href="#psr">psr</a>, etc.), particle diameter (<a href="#radius">radius</a>) and particle density ratio (<a href="density_ratio">density_ratio</a>).<br>
13639
13640
[354]13641
13642
[108]13643      <br>
13644
13645
[354]13646
13647
[108]13648If
[48]13649less values are given for <a href="#pdx">pdx</a>, <a href="#psl">psl</a>,
[5]13650etc. than the number of particle groups, then the last value is used
13651for the remaining values (or the default value, if the user did not set
[108]13652the parameter).<br>
13653
13654
[354]13655
13656
[108]13657 <br>
13658
13659
13660
[354]13661
13662
[108]13663The maximum allowed number of particle groups is limited to <span style="font-style: italic;">10</span>.<br>
13664
13665
[354]13666
13667
[108]13668 </td>
13669
13670
13671
[354]13672
13673
[108]13674    </tr>
13675
13676
[354]13677
13678
[108]13679    <tr>
13680
13681
[354]13682
13683
[108]13684      <td align="left" valign="top"><a name="particles_per_point"></a><span style="font-weight: bold;">particles_per_point</span></td>
13685
13686
[354]13687
13688
[108]13689      <td align="left" valign="top">I</td>
13690
13691
[354]13692
13693
[108]13694      <td align="left" valign="top">1</td>
13695
13696
[354]13697
13698
[108]13699      <td align="left" valign="top">Number of particles to be
13700started per point.<br>
13701
13702
[354]13703
13704
[108]13705      <br>
13706
13707
[354]13708
13709
[108]13710By default, one particle is
[48]13711started at all points of the particle source,&nbsp;defined by <span style="font-family: Thorndale,serif;">the </span><span lang="en-GB"><font face="Thorndale, serif">package
13712parameters </font></span><a href="chapter_4.2.html#pst"><span lang="en-GB"><font face="Thorndale, serif">pst</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psl"><span lang="en-GB"><font face="Thorndale, serif">psl</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psr"><span lang="en-GB"><font face="Thorndale, serif">psr</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#pss"><span lang="en-GB"><font face="Thorndale, serif">pss</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psn"><span lang="en-GB"><font face="Thorndale, serif">psn</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#psb"><span lang="en-GB"><font face="Thorndale, serif">psb</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#pdx"><span lang="en-GB"><font face="Thorndale, serif">pdx</font></span></a><span lang="en-GB"><font face="Thorndale, serif">, </font></span><a href="chapter_4.2.html#pdy"><span lang="en-GB"><font face="Thorndale, serif">pdy</font></span></a>
[108]13713      <span lang="en-GB"><font face="Thorndale, serif">and
13714      </font></span><a href="chapter_4.2.html#pdz"><span lang="en-GB"><font face="Thorndale, serif">pdz</font></span></a><span lang="en-GB"><font face="Thorndale, serif">.</font></span><span lang="en-GB"></span></td>
13715
13716
[354]13717
13718
[108]13719    </tr>
13720
13721
[354]13722
13723
[108]13724    <tr>
13725
13726
[354]13727
13728
[108]13729 <td style="vertical-align: top;"> 
13730     
13731     
[354]13732     
13733     
[108]13734      <p><a name="particle_advection_start"></a><b>particle_advection_</b>
13735      <br>
13736
13737
[354]13738
13739
[108]13740 <b>start</b></p>
13741
13742
[354]13743
13744
[108]13745 </td>
13746
13747
[354]13748
13749
[108]13750 <td style="vertical-align: top;">R </td>
13751
13752
[354]13753
13754
[108]13755 <td style="vertical-align: top;">0.0 </td>
13756
13757
[354]13758
13759
[108]13760 <td style="vertical-align: top;"> 
13761     
13762     
[354]13763     
13764     
[108]13765      <p>Time of the first
13766release of particles (in s). </p>
13767
13768
[354]13769
13770
[108]13771 
13772     
13773     
[354]13774     
13775     
[108]13776      <p>If particles are not
[48]13777to be released at the beginning of the
[5]13778run, the release time can be set via <b>particle_advection_start</b>.<br>
[108]13779
13780
13781
[354]13782
13783
[5]13784If particle transport is switched on in a restart run, then <a href="#read_particles_from_restartfile">read_particles_from_restartfile</a>
[48]13785= <span style="font-style: italic;">.F.</span> is
[108]13786also required.</p>
13787
13788
[354]13789
13790
[108]13791     
13792     
[354]13793     
13794     
[108]13795      <p>See also <a href="#end_time_prel">end_time_prel</a>.
13796      </p>
13797
13798
[354]13799
13800
[108]13801 </td>
13802
13803
[354]13804
13805
[108]13806 </tr>
13807
13808
[354]13809
13810
[108]13811 <tr>
13812
13813
[354]13814
13815
[108]13816 <td style="vertical-align: top;"> 
13817     
13818     
[354]13819     
13820     
[108]13821      <p><a name="particle_maximum_age"></a><b>particle_maximum_age</b></p>
13822
13823
13824
[354]13825
13826
[108]13827      </td>
13828
13829
[354]13830
13831
[108]13832 <td style="vertical-align: top;">R </td>
13833
13834
13835
[354]13836
13837
[108]13838      <td style="vertical-align: top;"><i>9999999.9</i>
13839      </td>
13840
13841
[354]13842
13843
[108]13844 <td style="vertical-align: top;"> 
13845     
13846     
[354]13847     
13848     
[108]13849      <p>Maximum
13850allowed age of particles (in s).&nbsp; </p>
13851
13852
[354]13853
13854
[108]13855 
13856     
13857     
[354]13858     
13859     
[108]13860      <p>If the
[48]13861age of a particle exceeds the time set by <b>particle_maximum_age</b>,
[108]13862the particle as well as its tail is deleted.</p>
13863
13864
[354]13865
13866
[108]13867 </td>
13868
13869
[354]13870
13871
[108]13872 </tr>
13873
13874
13875
[354]13876
13877
[108]13878    <tr>
13879
13880
[354]13881
13882
[108]13883 <td style="vertical-align: top;"> 
13884     
13885     
[354]13886     
13887     
[108]13888      <p><a name="pdx"></a><b>pdx</b></p>
13889
13890
[354]13891
13892
[108]13893 </td>
13894
13895
13896
[354]13897
13898
[108]13899      <td style="vertical-align: top;">R (10)<br>
13900
13901
[354]13902
13903
[108]13904 </td>
13905
13906
13907
[354]13908
13909
[108]13910      <td style="vertical-align: top;"><i>10 * dx</i>
13911      </td>
13912
13913
[354]13914
13915
[108]13916 <td style="vertical-align: top;"> 
13917     
13918     
[354]13919     
13920     
[108]13921      <p>Distance
[48]13922along x between particles within a particle source
[108]13923(in m).&nbsp; </p>
13924
13925
[354]13926
13927
[108]13928 
13929     
13930     
[354]13931     
13932     
[108]13933      <p>If the particle source shall be
[48]13934confined to one grid point,
13935the distances given by <span style="font-weight: bold;">pdx</span>,
[108]13936      <a href="#pdy">pdy</a>
[5]13937and <a href="#pdz">pdz</a>
[48]13938must be set larger than the respective domain size or <a href="#psl">psl</a>
13939= <a href="#psr">psr</a> has to be set
13940alternatively.<br>
[108]13941
13942
13943
[354]13944
13945
[108]13946      </p>
13947
13948
[354]13949
13950
[108]13951 
13952     
13953     
[354]13954     
13955     
[108]13956      <p><span style="font-weight: bold;">pdx</span>
[48]13957can be assigned a different value for each particle group (see <a href="#number_of_particle_groups">number_of_particle_groups</a>).<br>
[108]13958
13959
13960
[354]13961
13962
[108]13963      </p>
13964
13965
[354]13966
13967
[108]13968 </td>
13969
13970
[354]13971
13972
[108]13973 </tr>
13974
13975
[354]13976
13977
[108]13978 <tr>
13979
13980
[354]13981
13982
[108]13983 <td style="vertical-align: top;"> 
13984     
13985     
[354]13986     
13987     
[108]13988      <p><a name="pdy"></a><b>pdy</b></p>
13989
13990
13991
[354]13992
13993
[108]13994      </td>
13995
13996
[354]13997
13998
[108]13999 <td style="vertical-align: top;">R (10)<br>
14000
14001
14002
[354]14003
14004
[108]14005      </td>
14006
14007
[354]14008
14009
[108]14010 <td style="vertical-align: top;"><i>10
14011* dy</i> </td>
14012
14013
[354]14014
14015
[108]14016 <td style="vertical-align: top;">Distance
[48]14017along y between
[5]14018particles within a
[108]14019particle source (in m).&nbsp; </td>
14020
14021
[354]14022
14023
[108]14024 </tr>
14025
14026
[354]14027
14028
[108]14029 <tr>
14030
14031
14032
[354]14033
14034
[108]14035      <td style="vertical-align: top;"> 
14036     
14037     
[354]14038     
14039     
[108]14040      <p><a name="pdz"></a><b>pdz</b></p>
14041
14042
[354]14043
14044
[108]14045 </td>
14046
14047
14048
[354]14049
14050
[108]14051      <td style="vertical-align: top;">R (10)<br>
14052
14053
14054
[354]14055
14056
[108]14057      </td>
14058
14059
[354]14060
14061
[108]14062 <td style="vertical-align: top;"><i>10
14063* ( zu(2) - zu(1) )</i> </td>
14064
14065
[354]14066
14067
[108]14068 <td style="vertical-align: top;">Distance along z between
[5]14069particles within a particle source
[108]14070(in m). </td>
14071
14072
[354]14073
14074
[108]14075 </tr>
14076
14077
[354]14078
14079
[108]14080 <tr>
14081
14082
[354]14083
14084
[108]14085 <td style="vertical-align: top;"> 
14086     
14087     
[354]14088     
14089     
[108]14090      <p><a name="psb"></a><b>psb</b></p>
14091
14092
14093
[354]14094
14095
[108]14096      </td>
14097
14098
[354]14099
14100
[108]14101 <td style="vertical-align: top;">R (10)<br>
14102
14103
14104
[354]14105
14106
[108]14107      </td>
14108
14109
[354]14110
14111
[108]14112 <td style="vertical-align: top;"><i>10&nbsp;
14113* zu(nz/2)</i> </td>
14114
14115
[354]14116
14117
[108]14118 <td style="vertical-align: top;">Bottom
[48]14119edge of a particle
[108]14120source (in m). </td>
14121
14122
[354]14123
14124
[108]14125 </tr>
14126
14127
[354]14128
14129
[108]14130 <tr>
14131
14132
[354]14133
14134
[108]14135 <td style="vertical-align: top;"> 
14136     
14137     
[354]14138     
14139     
[108]14140      <p><a name="psl"></a><b>psl</b></p>
14141
14142
14143
[354]14144
14145
[108]14146      </td>
14147
14148
[354]14149
14150
[108]14151 <td style="vertical-align: top;">R (10)<br>
14152
14153
14154
[354]14155
14156
[108]14157      </td>
14158
14159
[354]14160
14161
[108]14162 <td style="vertical-align: top;"><i>10
14163* 0.0</i> </td>
14164
14165
[354]14166
14167
[108]14168 <td style="vertical-align: top;">Left
[48]14169edge of a particle source
[108]14170(in m). </td>
14171
14172
[354]14173
14174
[108]14175 </tr>
14176
14177
[354]14178
14179
[108]14180 <tr>
14181
14182
[354]14183
14184
[108]14185 <td style="vertical-align: top;"> 
14186     
14187     
[354]14188     
14189     
[108]14190      <p><a name="psn"></a><b>psn</b></p>
14191
14192
14193
[354]14194
14195
[108]14196      </td>
14197
14198
[354]14199
14200
[108]14201 <td style="vertical-align: top;">R (10)<br>
14202
14203
14204
[354]14205
14206
[108]14207      </td>
14208
14209
[354]14210
14211
[108]14212 <td style="vertical-align: top;"><i>10
14213* (ny * dy)</i> </td>
14214
14215
[354]14216
14217
[108]14218 <td style="vertical-align: top;">Rear
[493]14219(&#8220;north&#8221;) edge of a
[108]14220particle source (in m). </td>
14221
14222
[354]14223
14224
[108]14225 </tr>
14226
14227
[354]14228
14229
[108]14230 <tr>
14231
14232
[354]14233
14234
[108]14235 <td style="vertical-align: top;"> 
14236     
14237     
[354]14238     
14239     
[108]14240      <p><a name="psr"></a><b>psr</b></p>
14241
14242
14243
[354]14244
14245
[108]14246      </td>
14247
14248
[354]14249
14250
[108]14251 <td style="vertical-align: top;">R (10)<br>
14252
14253
14254
[354]14255
14256
[108]14257      </td>
14258
14259
[354]14260
14261
[108]14262 <td style="vertical-align: top;"><i>10
14263* (nx * dx)</i> </td>
14264
14265
[354]14266
14267
[108]14268 <td style="vertical-align: top;">Right
[48]14269edge of a particle
[108]14270source (in m). </td>
14271
14272
[354]14273
14274
[108]14275 </tr>
14276
14277
[354]14278
14279
[108]14280 <tr>
14281
14282
[354]14283
14284
[108]14285 <td style="vertical-align: top;"> 
14286     
14287     
[354]14288     
14289     
[108]14290      <p><a name="pss"></a><b>pss</b></p>
14291
14292
14293
[354]14294
14295
[108]14296      </td>
14297
14298
[354]14299
14300
[108]14301 <td style="vertical-align: top;">R (10)<br>
14302
14303
14304
[354]14305
14306
[108]14307      </td>
14308
14309
[354]14310
14311
[108]14312 <td style="vertical-align: top;"><i>10
14313* 0.0</i> </td>
14314
14315
[354]14316
14317
[108]14318 <td style="vertical-align: top;">Front
[493]14319(&#8220;south&#8221;) edge of a
[108]14320particle source (in m). </td>
14321
14322
[354]14323
14324
[108]14325 </tr>
14326
14327
[354]14328
14329
[108]14330 <tr>
14331
14332
[354]14333
14334
[108]14335 <td style="vertical-align: top;"> 
14336     
14337     
[354]14338     
14339     
[108]14340      <p><a name="pst"></a><b>pst</b></p>
14341
14342
14343
[354]14344
14345
[108]14346      </td>
14347
14348
[354]14349
14350
[108]14351 <td style="vertical-align: top;">R (10)<br>
14352
14353
14354
[354]14355
14356
[108]14357      </td>
14358
14359
[354]14360
14361
[108]14362 <td style="vertical-align: top;"><i>10
14363* zu(nz/2)</i> </td>
14364
14365
[354]14366
14367
[108]14368 <td style="vertical-align: top;">Top
[48]14369edge of a particle source
[108]14370(in m). </td>
14371
14372
[354]14373
14374
[108]14375 </tr>
14376
14377
[354]14378
14379
[108]14380 <tr>
14381
14382
[354]14383
14384
[108]14385 <td style="vertical-align: top;"> 
14386     
14387     
[354]14388     
14389     
[108]14390      <p><a name="radius"></a><b>radius</b></p>
14391
14392
14393
[354]14394
14395
[108]14396      </td>
14397
14398
[354]14399
14400
[108]14401 <td style="vertical-align: top;">R (10)</td>
14402
14403
14404
[354]14405
14406
[108]14407      <td style="vertical-align: top;"><i>0.0, 9</i>*<br>
14408
14409
14410
[354]14411
14412
[108]14413      <i>9999999.9</i></td>
14414
14415
[354]14416
14417
[108]14418 <td style="vertical-align: top;">Particle radius (in m).<br>
14419
14420
14421
[354]14422
14423
[108]14424      <br>
14425
14426
[354]14427
14428
[108]14429The viscous friction (in case of a velocity difference
[61]14430between
[5]14431particles and surrounding fluid) depends on the particle radius which
14432must be assigned as soon as <a href="chapter_4.2.html#density_ratio">density_ratio</a>
[108]14433/= <i>0.0</i>.<br>
14434
14435
[354]14436
14437
[108]14438 <br>
14439
14440
14441
[354]14442
14443
[48]14444With several groups of particles (see <a href="#number_of_particle_groups">number_of_particle_groups</a>),
14445each group can be assigned a different value. If the number of values
14446given for <span style="font-weight: bold;">radius</span>
14447is less than the number of
[5]14448groups defined by <span style="font-weight: bold;">number_of_particle_groups</span>,
14449then the last assigned value is used for all remaining groups. This
[108]14450means that by default the particle radius for all groups will be <span style="font-style: italic;">0.0</span>.<br>
14451
14452
[354]14453
14454
[108]14455 </td>
14456
14457
14458
[354]14459
14460
[108]14461    </tr>
14462
14463
[354]14464
14465
[108]14466    <tr>
14467
14468
[354]14469
14470
[108]14471 <td style="vertical-align: top;"> 
14472     
14473     
[354]14474     
14475     
[108]14476      <p><a name="random_start_position"></a><b>random_start_position</b></p>
14477
14478
14479
[354]14480
14481
[108]14482      </td>
14483
14484
[354]14485
14486
[108]14487 <td style="vertical-align: top;">L<br>
14488
14489
[354]14490
14491
[108]14492 </td>
14493
14494
14495
[354]14496
14497
[108]14498      <td style="vertical-align: top;"><i>.F.</i> </td>
14499
14500
14501
[354]14502
14503
[108]14504      <td style="vertical-align: top;"> 
14505     
14506     
[354]14507     
14508     
[493]14509      <p><span style="background: transparent none repeat scroll 0% 50%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial;"><font color="#000000">Initial position of the</font></span>
[48]14510particles is
[108]14511varied randomly within certain limits.&nbsp; </p>
14512
14513
[354]14514
14515
[108]14516 
14517     
14518     
[354]14519     
14520     
[108]14521      <p>By
[48]14522default, the initial positions of particles within the
[5]14523source excatly correspond with the positions given by <a href="#psl">psl</a>,
[108]14524      <a href="#psr">psr</a>, <a href="#psn">psn</a>,
14525      <a href="#pss">pss</a>, <a href="#psb">psb</a>,
14526      <a href="#pst">pst</a>, <a href="#pdx">pdx</a>,
14527      <a href="#pdy">pdy</a>,
[5]14528and<a href="#pdz">
[48]14529pdz</a>. With <b>random_start_position</b> = <i>.T.
[108]14530      </i>the initial
[5]14531positions of the particles are allowed to randomly vary from these
[108]14532positions within certain limits.&nbsp; </p>
14533
14534
[354]14535
14536
[108]14537 
14538     
14539     
[354]14540     
14541     
[108]14542      <p><b>Very
14543important:<br>
14544
14545
[354]14546
14547
[108]14548 </b>In case of <b>random_start_position</b>
[48]14549= <i>.T.</i>, the
[5]14550random-number generators on the individual PEs no longer&nbsp;
14551run synchronously. If random disturbances are applied to the velocity
14552field
[48]14553(see <a href="#create_disturbances">create_disturbances</a>),
[108]14554      <font color="#000000">then as consequence for parallel
[48]14555runs the
[5]14556realizations of the turbulent flow
14557fields will deviate between runs which used different numbers of PEs!</font></p>
[108]14558
14559
14560
[354]14561
14562
[108]14563      </td>
14564
14565
[354]14566
14567
[108]14568 </tr>
14569
14570
[354]14571
14572
[108]14573 <tr>
14574
14575
[354]14576
14577
[108]14578 <td style="vertical-align: top;"> 
14579     
14580     
[354]14581     
14582     
[108]14583      <p><a name="read_particles_from_restartfile"></a><b>read_particles_from_</b>
14584      <br>
14585
14586
[354]14587
14588
[108]14589 <b>restartfile</b></p>
14590
14591
[354]14592
14593
[108]14594 </td>
14595
14596
[354]14597
14598
[108]14599 <td style="vertical-align: top;">L<br>
14600
14601
[354]14602
14603
[108]14604 </td>
14605
14606
[354]14607
14608
[108]14609 <td style="vertical-align: top;"><i>.T.</i> </td>
14610
14611
14612
[354]14613
14614
[108]14615      <td style="vertical-align: top;"> 
14616     
14617     
[354]14618     
14619     
[108]14620      <p>Read particle
14621data from the previous run.&nbsp; </p>
14622
14623
[354]14624
14625
[108]14626 
14627     
14628     
[354]14629     
14630     
[108]14631      <p>By default,
[48]14632with restart runs particle data is read
[5]14633from file <a href="chapter_3.4.html#PARTICLE_RESTART_DATA_IN">PARTICLE_RESTART_DATA_IN</a>,
14634which is created by the preceding run. If this is not requested or if
14635in a restart run particle transport is switched on for the
14636first time (see <a href="#particle_advection_start">particle_advection_start</a>),
14637then <b>read_particles_from_restartfile</b> = <i>.F.</i>
[108]14638is required.</p>
14639
14640
[354]14641
14642
[108]14643 </td>
14644
14645
[354]14646
14647
[108]14648 </tr>
14649
14650
[354]14651
14652
[108]14653 <tr>
14654
14655
[354]14656
14657
[108]14658 <td style="vertical-align: top;"><a name="skip_particles_for_tail"></a><span style="font-weight: bold;">skip_particles_for_tail</span><br>
14659
14660
14661
[354]14662
14663
[108]14664      </td>
14665
14666
[354]14667
14668
[108]14669 <td style="vertical-align: top;">I<br>
14670
14671
[354]14672
14673
[108]14674 </td>
14675
14676
14677
[354]14678
14679
[262]14680      <td style="vertical-align: top;"><span style="font-style: italic;">100</span><br>
[108]14681
14682
[354]14683
14684
[108]14685 </td>
14686
14687
14688
[354]14689
14690
[108]14691      <td style="vertical-align: top;">Limit the number of
14692particle tails.<br>
14693
14694
[354]14695
14696
[108]14697 <br>
14698
14699
14700
[354]14701
14702
[48]14703If particle tails are switched on (see <a href="#use_particle_tails">use_particle_tails</a>),
14704every particle is given a tail by default. <span style="font-weight: bold;">skip_particles_for_tail </span>can
[108]14705be used to give only every n'th particle a tail.<br>
14706
14707
[354]14708
14709
[108]14710 <br>
14711
14712
[354]14713
14714
[108]14715 <span style="font-weight: bold;">Example:</span><br>
14716
14717
[354]14718
14719
[108]14720 <span style="font-weight: bold;">skip_particles_for_tail</span>
[48]14721= <span style="font-style: italic;">10</span> means
[108]14722that only every 10th particle will be given a tail.<br>
14723
14724
[354]14725
14726
[108]14727 </td>
14728
14729
14730
[354]14731
14732
[108]14733    </tr>
14734
14735
[354]14736
14737
[108]14738 <tr>
14739
14740
[354]14741
14742
[108]14743 <td style="vertical-align: top;"><a name="use_particle_tails"></a><span style="font-weight: bold;">use_particle_tails</span><br>
14744
14745
14746
[354]14747
14748
[108]14749      </td>
14750
14751
[354]14752
14753
[108]14754 <td style="vertical-align: top;">L<br>
14755
14756
[354]14757
14758
[108]14759 </td>
14760
14761
14762
[354]14763
14764
[108]14765      <td style="vertical-align: top;"><span style="font-style: italic;">.F.</span><br>
14766
14767
[354]14768
14769
[108]14770 </td>
14771
14772
14773
[354]14774
14775
[108]14776      <td style="vertical-align: top;">Give particles a tail.<br>
14777
14778
14779
[354]14780
14781
[108]14782      <br>
14783
14784
[354]14785
14786
[108]14787A particle tail is defined by the path a particle has moved
[5]14788along starting from some point of time in the past. It consists of a
14789set of descrete points in space which may e.g. be connected by a line
[108]14790in order visualize how the particle has moved.<br>
14791
14792
[354]14793
14794
[108]14795 <br>
14796
14797
14798
[354]14799
14800
[48]14801By default, particles have no tail. Parameter&nbsp;<a href="#skip_particles_for_tail">skip_particles_for_tail</a>
[108]14802can be used to give only every n'th particle a tail.<br>
14803
14804
[354]14805
14806
[108]14807 <br>
14808
14809
14810
[354]14811
14812
[48]14813The length of the tail is controlled by parameters&nbsp;<a href="#maximum_number_of_tailpoints">maximum_number_of_tailpoints</a>,&nbsp;<a href="#maximum_tailpoint_age">maximum_tailpoint_age</a>,
14814and <a href="#minimum_tailpoint_distance">minimum_tailpoint_distance</a>.<br>
[108]14815
14816
14817
[354]14818
14819
[108]14820      </td>
14821
14822
[354]14823
14824
[108]14825 </tr>
14826
14827
[354]14828
14829
[108]14830    <tr>
14831
14832
[354]14833
14834
[108]14835      <td align="left" valign="top"><a name="use_sgs_for_particles"></a><span style="font-weight: bold;">use_sgs_for_particles</span></td>
14836
14837
[354]14838
14839
[108]14840      <td align="left" valign="top">L</td>
14841
14842
[354]14843
14844
[108]14845      <td align="left" valign="top"><span style="font-style: italic;">.F.</span></td>
14846
14847
[354]14848
14849
[108]14850      <td align="left" valign="top">Use subgrid-scale
14851velocities for particle advection.<br>
14852
14853
[354]14854
14855
[108]14856      <br>
14857
14858
[354]14859
14860
[108]14861These
[5]14862velocities are calculated from the resolved and subgrid-scale TKE using
14863the Monte-Carlo random-walk method described by Weil et al. (2004, JAS,
1486461,
148652877-2887). When using this method, the timestep for the advancement of
14866the particles is limited by the so-called Lagrangian time scale. This
14867may be smaller than the current LES timestep so that several particle
14868(sub-) timesteps have to be carried out within one LES timestep. In
14869order to limit the number of sub-timesteps (and to limit the CPU-time),
14870the minimum value for the particle timestep is defined by the package
[108]14871parameter <a href="#dt_min_part">dt_min_part</a>.<br>
14872
14873
[354]14874
14875
[108]14876      <br>
14877
14878
[354]14879
14880
[108]14881Setting
14882      <span style="font-weight: bold;">use_sgs_for_particles</span>
[48]14883= <span style="font-style: italic;">.TRUE.</span>
14884automatically forces <a href="chapter_4.1.html#use_upstream_for_tke">use_upstream_for_tke</a>
14885= <span style="font-style: italic;">.TRUE.</span>.
[5]14886This inhibits the occurrence of large (artificial) spatial gradients of
14887the subgrid-scale TKE which otherwise would lead to wrong results for
[108]14888the particle advection.</td>
14889
14890
[354]14891
14892
[108]14893    </tr>
14894
14895
[354]14896
14897
[108]14898    <tr>
14899
14900
[354]14901
14902
[108]14903 <td style="vertical-align: top;"> 
14904     
14905     
[354]14906     
14907     
[108]14908      <p><a name="vertical_particle_advection"></a><b>vertical_particle_</b>
14909      <br>
14910
14911
[354]14912
14913
[108]14914 <b>advection</b></p>
14915
14916
[354]14917
14918
[108]14919 </td>
14920
14921
[354]14922
14923
[108]14924 <td style="vertical-align: top;">L<br>
14925
14926
[354]14927
14928
[108]14929 </td>
14930
14931
[354]14932
14933
[108]14934 <td style="vertical-align: top;"><i>.T.</i> </td>
14935
14936
14937
[354]14938
14939
[108]14940      <td style="vertical-align: top;"> 
14941     
14942     
[354]14943     
14944     
[108]14945      <p>Switch on/off
14946vertical particle transport. </p>
14947
14948
[354]14949
14950
[108]14951 
14952     
14953     
[354]14954     
14955     
[108]14956      <p>By default,
[48]14957particles are transported along all three
14958directions in space. With <b>vertical_particle_advection</b>
14959= <i>.F., </i>the
[108]14960particles will only be transported horizontally.</p>
14961
14962
[354]14963
14964
[108]14965 </td>
14966
14967
14968
[354]14969
14970
[108]14971    </tr>
14972
14973
[354]14974
14975
[108]14976 <tr>
14977
14978
[354]14979
14980
[108]14981 <td style="vertical-align: top;">
14982     
14983     
[354]14984     
14985     
[108]14986      <p><a name="write_particle_statistics"></a><b>write_particle_</b>
14987      <br>
14988
14989
[354]14990
14991
[108]14992 <b>statistics</b></p>
14993
14994
[354]14995
14996
[108]14997 </td>
14998
14999
[354]15000
15001
[108]15002 <td style="vertical-align: top;">L<br>
15003
15004
[354]15005
15006
[108]15007 </td>
15008
15009
[354]15010
15011
[108]15012 <td style="vertical-align: top;"><i>.F.</i> </td>
15013
15014
15015
[354]15016
15017
[108]15018      <td style="vertical-align: top;"> 
15019     
15020     
[354]15021     
15022     
[108]15023      <p>Switch on/off
15024output of particle informations.<br>
15025
15026
[354]15027
15028
[108]15029 </p>
15030
15031
[354]15032
15033
[108]15034 
15035     
15036     
[354]15037     
15038     
[108]15039      <p><br>
15040
15041
15042
[354]15043
15044
[5]15045For <span style="font-weight: bold;">write_particle_statistics</span>
15046= <span style="font-style: italic;">.T.</span> s<span style="font-family: thorndale,serif;">tatistical
15047informations</span> (e.g. the total number of particles used, the
15048number of particles exchanged between the PEs, etc.) which may be used
15049for debugging are output to the
15050local file <a href="chapter_3.4.html#PARTICLE_DATA">PARTICLE_INFOS</a>.&nbsp;
[108]15051      </p>
15052
15053
[354]15054
15055
[108]15056 
15057     
15058     
[354]15059     
15060     
[108]15061      <p><b>Note:</b> For parallel runs files
[48]15062may become very large
[108]15063and performance of PALM may decrease.</p>
15064
15065
[354]15066
15067
[108]15068 </td>
15069
15070
[354]15071
15072
[108]15073 </tr>
15074
15075
15076
[354]15077
15078
[108]15079 
15080 
[354]15081 
15082 
[108]15083  </tbody>
15084</table>
15085
15086
[354]15087
15088
[108]15089<span style="font-weight: bold;"><br>
15090
15091
15092
[354]15093
15094
[108]15095</span><br>
15096
15097
[354]15098
15099
[108]15100<h3 style="line-height: 100%;"><a name="Paketparameter"></a>Package
15101parameters: </h3>
15102
15103
[354]15104
15105
[108]15106<br>
15107
15108
[354]15109
15110
[108]15111<span style="font-weight: bold;">Package
[48]15112(<span style="font-weight: bold;">mrun</span> option
15113-p): <span style="font-weight: bold;"><a name="dvrp_graphics"></a>dvrp_graphics</span>
[5]15114&nbsp;&nbsp;&nbsp;
15115NAMELIST group name: <span style="font-weight: bold;">dvrp_graphics_par<br>
[108]15116
15117
15118
[354]15119
15120
[108]15121<br>
15122
15123
[354]15124
15125
[108]15126</span></span>
15127<table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="2">
15128
15129
[354]15130
15131
[108]15132 <tbody>
15133
15134
[354]15135
15136
[108]15137 <tr>
15138
15139
15140
[354]15141
15142
[108]15143      <td style="vertical-align: top;"><font size="4"><b>Parameter
15144name</b></font></td>
15145
15146
[354]15147
15148
[108]15149 <td style="vertical-align: top;"><font size="4"><b>Type</b></font></td>
15150
15151
15152
[354]15153
15154
[108]15155      <td style="vertical-align: top;"> 
15156     
15157     
[354]15158     
15159     
[108]15160      <p><b><font size="4">Default</font></b> <br>
15161
15162
[354]15163
15164
[108]15165 <b><font size="4">value</font></b></p>
15166
15167
[354]15168
15169
[108]15170 </td>
15171
15172
15173
[354]15174
15175
[108]15176      <td style="vertical-align: top;"><font size="4"><b>Explanation</b></font></td>
15177
15178
15179
[354]15180
15181
[108]15182    </tr>
15183
15184
[354]15185
15186
15187 <tr>
15188
15189      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="clip_dvrp_l"></a>clip_dvrp_l</span></td>
15190
15191      <td style="vertical-align: top;">R</td>
15192
15193      <td style="vertical-align: top;"><span style="font-style: italic;">0.0</span></td>
15194
15195      <td style="vertical-align: top;">Left boundary of the displayed domain (in m).<br>
15196
15197      <br>
15198
15199This
[266]15200parameter can be used to restrict the display of the total horizontal
15201domain, e.g. to reduce the data size of the dvr-output in order to
[354]15202speed-up&nbsp;the animated sequence.</td>
15203
15204    </tr>
15205
15206    <tr>
15207
15208      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="clip_dvrp_n"></a>clip_dvrp_n</span></td>
15209
15210      <td style="vertical-align: top;">R</td>
15211
15212      <td style="vertical-align: top;"><span style="font-style: italic;">(<a href="chapter_4.1.html#ny">ny</a>+1)*<a href="chapter_4.1.html#dy">dy</a></span></td>
15213
15214      <td style="vertical-align: top;">North boundary of the displayed domain (in m).<br>
15215
15216      <br>
15217
15218This parameter can
[266]15219be used to restrict the display of the total horizontal domain, e.g. to
15220reduce the data size of the dvr-output in order to speed-up&nbsp;the
[354]15221animated sequence.</td>
15222
15223    </tr>
15224
15225    <tr>
15226
15227      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="clip_dvrp_r"></a>clip_dvrp_r</span></td>
15228
15229      <td style="vertical-align: top;">R</td>
15230
15231      <td style="vertical-align: top;"><span style="font-style: italic;">(<a href="chapter_4.1.html#nx">nx</a>+1)*<a href="chapter_4.1.html#dx">dx</a></span></td>
15232
15233      <td style="vertical-align: top;">Right boundary of the displayed domain (in m).<br>
15234
15235      <br>
15236
15237This parameter can
[266]15238be used to restrict the display of the total horizontal domain, e.g. to
15239reduce the data size of the dvr-output in order to speed-up&nbsp;the
[354]15240animated sequence.</td>
15241
15242    </tr>
15243
15244    <tr>
15245
15246      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="clip_dvrp_s"></a>clip_dvrp_s</span></td>
15247
15248      <td style="vertical-align: top;">R</td>
15249
15250      <td style="vertical-align: top;"><span style="font-style: italic;">0.0</span></td>
15251
15252      <td style="vertical-align: top;">South boundary of the displayed domain (in m).<br>
15253
15254      <br>
15255
15256This parameter can
[266]15257be used to restrict the display of the total horizontal domain, e.g. to
15258reduce the data size of the dvr-output in order to speed-up&nbsp;the
[354]15259animated sequence.</td>
15260
15261    </tr>
15262
15263    <tr>
15264
15265      <td style="vertical-align: top;"><a name="cluster_size"></a><span style="font-weight: bold;">cluster_size</span></td>
15266
15267      <td style="vertical-align: top;">I</td>
15268
15269      <td style="vertical-align: top;"><span style="font-style: italic;">1</span></td>
15270
15271      <td>Vertex cluster size for polygon reduction of topography.<br>
15272
15273      <br>
15274
15275This
[237]15276parameter can be used to reduce the number of polygones which form the
15277topography isosurface. In case of large numerical grids (large number
15278of gridpoints) and /or complex topography, cluster_size &gt; 1 may
15279speed up the animation significantly. Disadvantage: buildings may loose
[354]15280their strict rectangular shape.<br>
[108]15281
[354]15282      <br>
[108]15283
[354]15284The allowed range of values is 1 &lt;= <span style="font-weight: bold;">cluster_size</span> &lt;= 5.<br>
15285
15286      <br>
15287
15288 <span style="font-weight: bold;">Warning:</span> The allowed range of values is not checked. Wrong values may lead to unforseen effects or even aborts! </td>
15289
15290    </tr>
15291
15292    <tr>
15293
15294      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="color_interval"></a>color_interval</span></td>
15295
15296      <td style="vertical-align: top;">R(2)</td>
15297
15298      <td style="vertical-align: top;"><span style="font-style: italic;">0.0, 1.0</span></td>
15299
15300      <td style="vertical-align: top;">Interval of values used for determining the particle color displayed in the animation.<br>
15301
15302      <br>
15303
15304See <a href="#particle_color">particle_color</a> for further explanation.</td>
15305
15306    </tr>
15307
15308    <tr>
15309
15310
15311
15312
[108]15313 <td style="vertical-align: top;">
15314     
15315     
[354]15316     
15317     
[108]15318      <p><a name="dt_dvrp"></a><b>dt_dvrp</b></p>
15319
15320
15321
[354]15322
15323
[108]15324      </td>
15325
15326
[354]15327
15328
[108]15329 <td style="vertical-align: top;">R</td>
15330
15331
15332
[354]15333
15334
[108]15335      <td style="vertical-align: top;"><i>9999999.9</i></td>
15336
15337
15338
[354]15339
15340
[108]15341      <td style="vertical-align: top;"> 
15342     
15343     
[354]15344     
15345     
[108]15346      <p>Temporal
[48]15347interval of scenes to be displayed with the <span style="font-weight: bold;">dvrp</span> software (in
[108]15348s).&nbsp; </p>
15349
15350
[354]15351
15352
[108]15353 
15354     
15355     
[354]15356     
15357     
[108]15358      <p>Isosurfaces, cross sections and
[48]15359particles can be displayed
[5]15360simultaneous. The display of particles requires that the particle
15361transport is switched on (see <a href="#dt_prel">dt_prel</a>).
[108]15362Objects to be displayed have to be determined with <a href="#mode_dvrp">mode_dvrp</a>. </p>
15363
15364
[354]15365
15366
[108]15367 
15368     
15369     
[354]15370     
15371     
[108]15372      <p>If
[48]15373output of scenes created by dvrp software is switched on
[5]15374(see <a href="#mode_dvrp">mode_dvrp</a>),
15375this parameter can be used to assign the temporal interval at which
[48]15376scenes are to be created (and the respective&nbsp; graphical data
15377is to
[5]15378be output to the streaming server). <span lang="en-GB"><font face="Thorndale">Reference time is the beginning of
15379&nbsp;the simulation, i.e. output takes place at times t = <b>dt_dvrp</b>,
[48]153802*<b>dt_dvrp</b>, 3*<b>dt_dvrp</b>, etc. The
15381actual output times can
15382deviate from these theoretical values (see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">).&nbsp;
15383Is <b>dt_dvrp</b> &lt; </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale">dt</font></span></a><span lang="en-GB"><font face="Thorndale">, then
15384scenes are created and
[5]15385output after each time step (if this is requested it should be <b>dt_dvrp</b>
[108]15386= <i>0</i>).</font></span> </p>
15387
15388
[354]15389
15390
[108]15391 </td>
15392
15393
15394
[354]15395
15396
[108]15397    </tr>
15398
15399
15400
15401
[354]15402 <tr>
15403
15404      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="dvrpsize_interval"></a>dvrpsize_interval</span></td>
15405
15406      <td style="vertical-align: top;">R(2)</td>
15407
15408      <td style="vertical-align: top;"><span style="font-style: italic;">0.0, 1.0</span></td>
15409
15410      <td style="vertical-align: top;">Interval of values used for determining the particle size displayed in the animation.<br>
15411
15412      <br>
15413
15414See <a href="#particle_dvrpsize">particle_dvrpsize</a> for further explanation.</td>
15415
15416    </tr>
15417
15418    <tr>
15419
15420
15421
15422
[108]15423 <td style="vertical-align: top;">
15424     
15425     
[354]15426     
15427     
[108]15428      <p><a name="dvrp_directory"></a><b>dvrp_directory</b></p>
15429
15430
15431
[354]15432
15433
[108]15434      </td>
15435
15436
[354]15437
15438
[108]15439 <td style="vertical-align: top;">C*80</td>
15440
15441
15442
[354]15443
15444
[108]15445      <td style="vertical-align: top;"><i>'default'</i></td>
15446
15447
15448
[354]15449
15450
[108]15451      <td style="vertical-align: top;"> 
15452     
15453     
[354]15454     
15455     
[108]15456      <p>Name of the
[48]15457directory into which data created by the <span style="font-weight: bold;">dvrp</span>
[108]15458software shall be saved.&nbsp; </p>
15459
15460
[354]15461
15462
[108]15463 
15464     
15465     
[354]15466     
15467     
[108]15468      <p>By default,
[48]15469the directory name is generated from the user
[5]15470name
15471(see package parameter <a href="#dvrp_username">dvrp_username</a>)
[48]15472and the base file name (given as the argument of <span style="font-weight: bold;">mrun</span> option -d) as <span style="font-style: italic;">'&lt;user
[108]15473name&gt;/&lt;base file name&gt;'</span>.</p>
15474
15475
[354]15476
15477
[108]15478 </td>
15479
15480
15481
[354]15482
15483
[108]15484    </tr>
15485
15486
[354]15487
15488
[108]15489 <tr>
15490
15491
[354]15492
15493
[108]15494 <td style="vertical-align: top;">
15495     
15496     
[354]15497     
15498     
[108]15499      <p><a name="dvrp_file"></a><b>dvrp_file</b></p>
15500
15501
15502
[354]15503
15504
[108]15505      </td>
15506
15507
[354]15508
15509
[108]15510 <td style="vertical-align: top;">C*80</td>
15511
15512
15513
[354]15514
15515
[108]15516      <td style="vertical-align: top;"><i>'default'</i></td>
15517
15518
15519
[354]15520
15521
[108]15522      <td style="vertical-align: top;"> 
15523     
15524     
[354]15525     
15526     
[108]15527      <p>Name of the
[48]15528file into which data created by the <span style="font-weight: bold;">dvrp</span>
[108]15529software shall be output.&nbsp; </p>
15530
15531
[354]15532
15533
[108]15534 
15535     
15536     
[354]15537     
15538     
[108]15539      <p>This
[48]15540parameter can be given a value only in case of <a href="#dvrp_output">dvrp_output</a>
15541= <span style="font-style: italic;">'local'</span><i>
[108]15542      </i>which
[5]15543determines that the data created by <span style="font-weight: bold;">dvrp</span>
15544is output to a local file (on the machine where PALM is executed).
15545Apart from the default, it is only allowed to assign <span style="font-style: italic;">'/dev/null'</span> (which
15546means that no output is really stored). This can be used for special
15547runtime measurements of the <span style="font-weight: bold;">dvrp</span>
[108]15548software.</p>
15549
15550
[354]15551
15552
[108]15553 </td>
15554
15555
[354]15556
15557
[108]15558 </tr>
15559
15560
[354]15561
15562
[108]15563 <tr>
15564
15565
[354]15566
15567
[108]15568 <td style="vertical-align: top;"> 
15569     
15570     
[354]15571     
15572     
[108]15573      <p><a name="dvrp_host"></a><b>dvrp_host</b></p>
15574
15575
15576
[354]15577
15578
[108]15579      </td>
15580
15581
[354]15582
15583
[108]15584 <td style="vertical-align: top;">C*80</td>
15585
15586
15587
[354]15588
15589
[108]15590      <td style="vertical-align: top;"> 
15591     
15592     
[354]15593     
15594     
[108]15595      <p><i>'origin.rvs.</i>
15596      <br>
15597
15598
[354]15599
15600
[108]15601u<i>ni- hanover.de'</i></p>
15602
15603
[354]15604
15605
[108]15606 </td>
15607
15608
[354]15609
15610
[108]15611 <td style="vertical-align: top;"> 
15612     
15613     
[354]15614     
15615     
[108]15616      <p>Name of the computer
[48]15617to which data created by the <span style="font-weight: bold;">dvrp</span>
15618software shall be
[108]15619transferred.&nbsp; </p>
15620
15621
[354]15622
15623
[108]15624 
15625     
15626     
[354]15627     
15628     
[108]15629      <p>In case of <a href="#dvrp_output">dvrp_output</a>
[48]15630= <span style="font-style: italic;">'rtsp'</span>
15631only the default
[5]15632value is allowed (streaming server of
15633the RRZN). For <a href="#dvrp_output">dvrp_output</a>
[48]15634= <span style="font-style: italic;">'local'</span><i>
[108]15635      </i>the
15636assigned value is ignored.</p>
15637
15638
[354]15639
15640
[108]15641 </td>
15642
15643
[354]15644
15645
[108]15646 </tr>
15647
15648
[354]15649
15650
[108]15651 <tr>
15652
15653
15654
[354]15655
15656
[108]15657      <td style="vertical-align: top;"> 
15658     
15659     
[354]15660     
15661     
[108]15662      <p><a name="dvrp_output"></a><b>dvrp_output</b></p>
15663
15664
15665
[354]15666
15667
[108]15668      </td>
15669
15670
[354]15671
15672
[108]15673 <td style="vertical-align: top;">C*10</td>
15674
15675
15676
[354]15677
15678
[108]15679      <td style="vertical-align: top;"><i>'rtsp'</i></td>
15680
15681
15682
[354]15683
15684
[108]15685      <td style="vertical-align: top;"> 
15686     
15687     
[354]15688     
15689     
[108]15690      <p>Output mode
[48]15691for the <span style="font-weight: bold;">dvrp</span>
[108]15692software. <br>
15693
15694
[354]15695
15696
[108]15697 <br>
15698
15699
[354]15700
15701
[108]15702 </p>
15703
15704
15705
[354]15706
15707
[108]15708The following settings are allowed:<br>
15709
15710
[354]15711
15712
[108]15713 <br>
15714
15715
[354]15716
15717
[108]15718 
15719     
15720     
[354]15721     
15722     
[108]15723      <table style="text-align: left; width: 100%;" cellpadding="2" cellspacing="2">
15724
15725
[354]15726
15727
[108]15728 <tbody>
15729
15730
[354]15731
15732
[108]15733 <tr>
15734
15735
[354]15736
15737
[108]15738 <td style="vertical-align: top;"><i>'rtsp'</i></td>
15739
15740
15741
[354]15742
15743
[108]15744            <td style="vertical-align: top;">Data created by the <span style="font-weight: bold;">dvrp</span>
[5]15745software is transferred using
15746a special transmission protocol to a so-called streaming server, which
15747is able to continuously transfer visualization data with a
15748high transmission rate.&nbsp; <br>
[108]15749
15750
15751
[354]15752
15753
[5]15754Additionally, with this output mode a
15755set of files is generated automatically
15756within a directory on the streaming server (beside the visualization
15757data e.g. some html-files) which can be used to
15758visualize the data via an internet-browser plugin. Host
15759(streaming-server) and directory can be defined by the user with <a href="#dvrp_host">dvrp_host</a>
15760and <a href="#dvrp_directory">dvrp_directory</a>.</td>
[108]15761
15762
15763
[354]15764
15765
[108]15766          </tr>
15767
15768
[354]15769
15770
[108]15771 <tr>
15772
15773
[354]15774
15775
[108]15776 <td style="vertical-align: top;"><i>'ftp'</i></td>
15777
15778
15779
[354]15780
15781
[108]15782            <td style="vertical-align: top;">Data created by the <span style="font-weight: bold;">dvrp</span>
[5]15783software is transferred to the destination host (see <a href="#dvrp_host">dvrp_host</a>
15784and <a href="#dvrp_directory">dvrp_directory</a>)
[108]15785using ftp.</td>
15786
15787
[354]15788
15789
[108]15790 </tr>
15791
15792
[354]15793
15794
[108]15795 <tr>
15796
15797
[354]15798
15799
[108]15800 <td style="vertical-align: top;"><i>'local'</i></td>
15801
15802
15803
[354]15804
15805
[108]15806            <td style="vertical-align: top;">Data created by the <span style="font-weight: bold;">dvrp</span>
[5]15807software is output locally on a file defined by <a href="#dvrp_file">dvrp_file
[108]15808            </a>.</td>
15809
15810
[354]15811
15812
[108]15813 </tr>
15814
15815
[354]15816
15817
[108]15818 
15819       
15820       
[354]15821       
15822       
[108]15823        </tbody> 
15824     
15825     
[354]15826     
15827     
[108]15828      </table>
15829
15830
[354]15831
15832
[108]15833 <br>
15834
15835
15836
[354]15837
15838
[108]15839      </td>
15840
15841
[354]15842
15843
[108]15844 </tr>
15845
15846
[354]15847
15848
[108]15849 <tr>
15850
15851
[354]15852
15853
[108]15854 <td style="vertical-align: top;"> 
15855     
15856     
[354]15857     
15858     
[108]15859      <p><a name="dvrp_password"></a><b>dvrp_password</b></p>
15860
15861
15862
[354]15863
15864
[108]15865      </td>
15866
15867
[354]15868
15869
[108]15870 <td style="vertical-align: top;">C*80</td>
15871
15872
15873
[354]15874
15875
[108]15876      <td style="vertical-align: top;">'********'</td>
15877
15878
[354]15879
15880
[108]15881 <td style="vertical-align: top;"> 
15882     
15883     
[354]15884     
15885     
[108]15886      <p>Password for the
[48]15887computer to which data created by the <span style="font-weight: bold;">dvrp</span> software is to
15888be
[108]15889transferred.&nbsp; </p>
15890
15891
[354]15892
15893
[108]15894 
15895     
15896     
[354]15897     
15898     
[108]15899      <p>Assigning a password is
[48]15900only necessary in case of <a href="#dvrp_output">dvrp_output</a>
15901= <span style="font-style: italic;">'ftp'</span>.
15902For <a href="#dvrp_output">dvrp_output</a>
15903= <span style="font-style: italic;">'rtsp'</span><i>
[108]15904      </i>the default
15905value must not be changed!</p>
15906
15907
[354]15908
15909
[108]15910 </td>
15911
15912
[354]15913
15914
[108]15915 </tr>
15916
15917
[354]15918
15919
15920 <tr>
15921
15922      <td style="vertical-align: top;">
15923     
15924      <p><a name="dvrp_psize"></a><b>dvrp_psize</b></p>
15925
15926      </td>
15927
15928      <td style="vertical-align: top;">R</td>
15929
15930      <td style="vertical-align: top;"><span style="font-style: italic;">0.2 * <a href="chapter_4.1.html#dx">dx</a></span></td>
15931
15932      <td style="vertical-align: top;">
15933     
15934      <p>Diameter that particles are given in visualizations with
[266]15935the <span style="font-weight: bold;">dvrp</span>
15936software (in
15937m).&nbsp; </p>
[108]15938
15939
[354]15940
15941
[266]15942 
15943     
15944     
[354]15945     
15946     
[266]15947      <p>In case that particles are
15948visualized with the <span style="font-weight: bold;">dvrp</span>
15949software (see <a href="chapter_4.5.7.html">chapter
159504.5.7</a>), their size can be set by parameter <b>dvrp_psize</b>.
15951All
15952particles are displayed with this same size.<br>
[108]15953
[266]15954
[354]15955
15956
[266]15957 </p>
15958
15959
[354]15960
15961
[266]15962 
15963     
15964     
[354]15965     
15966     
15967      <p>Alternatively, the particle size can be controlled by certain flow parameters using parameter <a href="#particle_dvrpsize">particle_dvrpsize</a>.</p>
15968
15969     
15970      <p>Another way to control
[266]15971the particles diameter is to set it with the
15972user-interface in routine <span style="font-family: monospace;">user_init_particles</span>
15973(at the beginning of the simulation) and/or to redefine it after each
15974timestep in routine <tt>user<font style="font-size: 11pt;" size="2">_particle_attributes</font></tt>.&nbsp;</p>
15975
15976
15977
[354]15978
15979
[266]15980     
15981     
[354]15982     
15983     
[266]15984      <p><b>Note:</b> This parameter determines exclusively
15985the size
15986under which particles appear in the <span style="font-weight: bold;">dvrp</span>
15987visualization. The flow relevant particle radius is determined via the
[354]15988particle parameter <a href="chapter_4.2.html#radius">radius</a>!</p>
[266]15989
[354]15990      </td>
[266]15991
[354]15992    </tr>
[266]15993
[354]15994    <tr>
15995
15996
15997
15998
15999
[108]16000      <td style="vertical-align: top;"> 
16001     
16002     
[354]16003     
16004     
[108]16005      <p><a name="dvrp_username"></a><b>dvrp_username</b></p>
16006
16007
16008
[354]16009
16010
[108]16011      </td>
16012
16013
[354]16014
16015
[108]16016 <td style="vertical-align: top;">C*80</td>
16017
16018
16019
[354]16020
16021
[108]16022      <td style="vertical-align: top;"><br>
16023
16024
[354]16025
16026
[108]16027 </td>
16028
16029
[354]16030
16031
[108]16032 <td style="vertical-align: top;"> 
16033     
16034     
[354]16035     
16036     
[108]16037      <p>User name of a valid
[48]16038account on the computer to which data
16039created by the <span style="font-weight: bold;">dvrp</span>
16040software
[5]16041is to be
[108]16042transferred.&nbsp; </p>
16043
16044
[354]16045
16046
[108]16047 
16048     
16049     
[354]16050     
16051     
[108]16052      <p>Assigning a value to this
[48]16053parameter is required in case of <a href="#dvrp_output">dvrp_output</a>
16054= <span style="font-style: italic;">'rtsp'</span>
16055or <span style="font-style: italic;">'ftp'</span>.</p>
[108]16056
16057
16058
[354]16059
16060
[108]16061      </td>
16062
16063
[354]16064
16065
[108]16066 </tr>
16067
16068
[354]16069
16070
16071 <tr>
16072
16073      <td style="vertical-align: top;"><a name="groundplate_color"></a><span style="font-weight: bold;">groundplate_color</span></td>
16074
16075      <td style="vertical-align: top;">R(3)</td>
16076
16077      <td style="vertical-align: top;"><span style="font-style: italic;">0.0, 0.6, 0.0</span></td>
16078
16079      <td style="vertical-align: top;">Color of the ground plate.<br>
16080
16081      <br>
16082
16083The color is given in RGB (red/green/blue) portions. The default color of the ground plate is green.</td>
16084
16085    </tr>
16086
16087    <tr>
16088
16089      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="isosurface_color"></a>isosurface_color</span></td>
16090
16091      <td style="vertical-align: top;">R(3,10)</td>
16092
16093      <td style="vertical-align: top;"><span style="font-style: italic;">0.9, 0.9, 0.9</span><br style="font-style: italic;">
16094
16095      <span style="font-style: italic;">0.8, 0.1, 0.1</span><br style="font-style: italic;">
16096
16097      <span style="font-style: italic;">0.1, 0.1, 0.8<br>
16098
160990.1, 0.8, 0.1<br>
16100
161010.6, 0.1, 0.1<br>
16102
161030.1, 0.1, 0.6<br>
16104
161050.1, 0.6, 0.1<br>
16106
161070.4, 0.1, 0.1<br>
16108
161090.1, 0.1, 0.4<br>
16110
161110.1, 0.4, 0.1</span></td>
16112
16113      <td style="vertical-align: top;">Color of the isosurface(s).<br>
16114
16115      <br>
16116
16117Colors
[336]16118are given in RGB (red/green/blue) portions. By default, the first
16119isosurface has a gray color, the second a red color, the third a blue
[354]16120color, etc.</td>
[108]16121
[354]16122    </tr>
[108]16123
[354]16124    <tr>
16125
16126
16127
16128
[108]16129 <td style="vertical-align: top;"> 
16130     
16131     
[354]16132     
16133     
[108]16134      <p><a name="mode_dvrp"></a><b>mode_dvrp</b></p>
16135
16136
16137
[354]16138
16139
[108]16140      </td>
16141
16142
[354]16143
16144
[108]16145 <td style="vertical-align: top;">C*20&nbsp;
16146      <br>
16147
16148
[354]16149
16150
[108]16151(10)</td>
16152
16153
[354]16154
16155
[108]16156 <td style="vertical-align: top;"><i>10
16157* ''</i></td>
16158
16159
[354]16160
16161
[108]16162 <td style="vertical-align: top;">
16163     
16164     
[354]16165     
16166     
[108]16167      <p>Graphical objects (isosurfaces, slicers, particles) which are
[5]16168to be created by the <span style="font-weight: bold;">dvrp</span>
[108]16169software.&nbsp; </p>
16170
16171
[354]16172
16173
[108]16174 
16175     
16176     
[354]16177     
16178     
[108]16179      <p>Several different objects can
[48]16180be assigned simultaneously and
[130]16181will be displayed in the same scene. Allowed values for <span style="font-weight: bold;">mode_dvrp</span> are <span style="font-style: italic;">'isosurface##'</span>
16182(isosurface), <span style="font-style: italic;">'slicer##'</span>
[5]16183(cross sections), and <span style="font-style: italic;">'particles'</span>.
[130]16184Within the strings the hash characters ("##") have to be replaced by two
[493]16185digits 01&#8804;##&#8804;99. Up to 10 objects
[129]16186can be assigned at the same time, e.g.:&nbsp; </p>
[108]16187
16188
[354]16189
16190
[108]16191 
16192     
16193     
[354]16194     
16195     
[108]16196      <blockquote><b>mode_dvrp</b>
[130]16197= <span style="font-style: italic;">'isosurface02'</span><i>,
16198'slicer01',
16199'particles', 'slicer02'</i></blockquote>
[108]16200
16201
[354]16202
16203
[108]16204 
16205     
16206     
[354]16207     
16208     
[108]16209      <p>In this
[48]16210case one isosurface, two cross sections, and particles
[129]16211will be created. The quantities for which isosurfaces or cross sections are to be
[5]16212created have to be selected with
[129]16213the parameter <a href="#data_output">data_output</a> (<span style="font-weight: bold;">data_output</span>
[48]16214also determines the
[129]16215orientation of the cross section, thus xy, xz, or yz). Since for <span style="font-weight: bold;">data_output</span> <span style="font-weight: bold;"></span>lists of
[48]16216variables may be
[130]16217assigned, the digits at the end of the <span style="font-weight: bold;">mode_dvrp</span>-string
16218select the quantity, which is given
16219at the respective position in the respective list (e.g. <span style="font-style: italic;">'isosurface02'</span>
[129]16220selects the second 3D quantity
[130]16221of <span style="font-weight: bold;">data_output</span><span style="font-style: italic;">'slicer01'</span> selects the first 2D quantity
[129]16222of <span style="font-weight: bold;">data_output</span>).
16223If e.g. <span style="font-weight: bold;">data_output</span> is assigned as <b>data_output</b> = <span style="font-style: italic;">'u_xy'</span><i>,
16224'w_xz', 'v_yz'</i>, <span style="font-style: italic;">'pt'</span><i>,
16225'u', 'w'</i>, then - assuming the above assignment of <span style="font-weight: bold;">mode_dvrp</span> - an
[48]16226isosurface of u, a
[5]16227horizontal cross section of u and
[129]16228a vertical cross section (xz) of w are created. For locations of the
[5]16229cross sections see <a href="#data_output">data_output</a>.
16230The theshold value for which the isosurface is
[336]16231to be created can be defined with parameter <a href="#threshold">threshold</a>. The isosurface color is controlled by parameter <a href="#isosurface_color">isosurface_color</a>.<br>
[108]16232
16233
16234
[354]16235
16236
[108]16237      </p>
16238
16239
[354]16240
16241
[108]16242 
16243     
16244     
[354]16245     
16246     
16247      <p>The particles color and size can be set using parameters <a href="#particle_color">particle_color</a> and <a href="#particle_dvrpsize">particle_dvrpsize</a>.</p>
16248
16249     
16250      <p>The vertical extension of the displayed domain is
16251given by <a href="#nz_do3d">nz_do3d</a>.</p>
16252
16253     
16254      <p>The displayed horizontal domain can be restricted using parameters <a href="#clip_dvrp_l">clip_dvrp_l</a>, <a href="#clip_dvrp_r">clip_dvrp_r</a>, <a href="#clip_dvrp_n">clip_dvrp_n</a>, <a href="#clip_dvrp_s">clip_dvrp_s</a>.</p>
16255
16256     
16257      <p>If user-defined dvrp objects exist (see <a href="chapter_3.5.4.html">chapter 3.5.4</a>), then&nbsp;<span style="font-weight: bold;">mode_dvrp</span> may also refer to quantities selected with the parameter&nbsp;<a href="chapter_4.3.html#data_output_user">data_output_user</a> (internally PALM appends them to those selected&nbsp;with
[130]16258the parameter <a href="chapter_4.2.html#data_output">data_output</a>).
[108]16259
16260
[354]16261 </p>
16262
16263     
16264      <p><b>Assignments
[48]16265of mode_dvrp must correspond to those of data_output
[5]16266and
[130]16267data_output_user! </b>If e.g. <b>data_output</b> = <span style="font-style: italic;">'pt_xy'</span>,<span style="font-style: italic;"> 'w'</span><i> </i>was set, then only the digits "01" are allowed
[48]16268for <b>mode_dvrp</b>,
[130]16269thus <span style="font-style: italic;">'isosurface01'</span>
16270and/or <span style="font-style: italic;">'slicer01'</span><i>.</i>
[108]16271      </p>
16272
16273
[354]16274
16275
[108]16276 
16277     
16278     
[354]16279     
16280     
[108]16281      <p>Further details about using the <span style="font-weight: bold;">dvrp</span> software are
[48]16282given in <a href="chapter_4.5.7.html">chapter
[108]162834.5.7</a>.<br>
16284
16285
[354]16286
16287
[108]16288 </p>
16289
16290
[354]16291
16292
[108]16293 <b>Note:</b><br>
16294
16295
16296
[354]16297
16298
[336]16299The declaration of color charts to be
[130]16300used still have to be given "manually" in subroutine <a href="chapter_3.4.html#user_dvrp_coltab"><span style="font-family: monospace;">user_dvrp_coltab</span></a>
[336]16301(file <tt><font style="font-size: 11pt;" size="2">user_dvrp_coltab.f90</font></tt>).&nbsp;
[108]16302
16303
[354]16304      </td>
[108]16305
16306
16307
[354]16308
16309
[108]16310    </tr>
16311
16312
[354]16313
16314
16315 <tr>
16316
16317      <td style="vertical-align: top;"><a style="font-weight: bold;" name="particle_color"></a><span style="font-weight: bold;">particle_color</span></td>
16318
16319      <td style="vertical-align: top;">C*10</td>
16320
16321      <td style="vertical-align: top;"><span style="font-style: italic;">'none'</span></td>
16322
16323      <td style="vertical-align: top;">Parameter, which allows to bind the displayed particle color to certain flow quantities.<br>
16324
16325      <br>
16326
16327By default, particles have a black color.<br>
16328
16329      <br>
16330
16331Allowed values for <span style="font-weight: bold;">particle_color</span> are:<br>
16332
16333      <br>
16334
16335     
16336      <table style="text-align: left; width: 100%;" border="0" cellpadding="2" cellspacing="2">
16337
16338        <tbody>
16339
16340          <tr>
16341
16342            <td style="vertical-align: top;"><span style="font-style: italic;">'absuv'</span></td>
16343
16344            <td style="vertical-align: top;">Particle color depends on the absolute value of the resolved-scale horizontal velocity (SQRT(u<sup>2</sup>+v<sup>2</sup>) at the particle position.</td>
16345
16346          </tr>
16347
16348          <tr>
16349
16350            <td style="vertical-align: top;"><span style="font-style: italic;">'pt*'</span></td>
16351
16352            <td style="vertical-align: top;">Particle
[266]16353color depends on the deviation of the resolved-scale potential
16354temperature at the particle position from the horizontally averaged
[354]16355potential temperature (total domain).</td>
16356
16357          </tr>
16358
16359          <tr>
16360
16361            <td style="vertical-align: top;"><span style="font-style: italic;">'z'</span></td>
16362
16363            <td style="vertical-align: top;">Particle color depends on the height of the particle with respect to the bottom boundary (z=0).</td>
16364
16365          </tr>
16366
16367       
16368        </tbody>
16369     
16370      </table>
16371
16372      <br>
16373
16374The
[266]16375colortable used for particles ranges from deep blue to deep red with
16376yellow in between. The interval of values from the above listed
[354]16377quantities to be mapped to these colors is defined by parameter <a href="#color_interval">color_interval</a>.<br>
[108]16378
[354]16379      <br>
[108]16380
[354]16381      <span style="font-weight: bold;">Example:<br>
16382
16383      </span>If <span style="font-weight: bold;">particle_color</span> = <span style="font-style: italic;">'pt*'</span> and <a href="#color_interval">color_interval</a> = <span style="font-style: italic;">-0.5</span>, <span style="font-style: italic;">+0.5</span>, then all particles at positions with <span style="font-style: italic;">pt* </span>&lt;=<span style="font-style: italic;"> -0.5 K</span> will have a deep blue color and those at positions with <span style="font-style: italic;">pt*</span> &gt;= <span style="font-style: italic;">+0.5 K</span> will have a deep red color, while those with <span style="font-style: italic;">-0.5</span> &lt; <span style="font-style: italic;">pt*</span> &lt; <span style="font-style: italic;">+0.5</span> will vary in color from deep blue to deep red and transition from yellow to blue indicate <span style="font-style: italic;">pt*</span> ~ <span style="font-style: italic;">0.0</span>.</td>
16384
16385    </tr>
16386
16387    <tr>
16388
16389      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="particle_dvrpsize"></a>particle_dvrpsize</span></td>
16390
16391      <td style="vertical-align: top;">C*10</td>
16392
16393      <td style="vertical-align: top;"><span style="font-style: italic;">'none'</span></td>
16394
16395      <td style="vertical-align: top;">Parameter, which allows to bind the displayed particle size to certain flow quantities.<br>
16396
16397      <br>
16398
16399The default particle size (diameter) is determined with parameter <a href="#dvrp_psize">dvrp_psize</a>.<br>
16400
16401      <br>
16402
16403Allowed values for <span style="font-weight: bold;">particle_dvrpsize</span> are:<br>
16404
16405     
16406      <table style="text-align: left; width: 100%;" border="0" cellpadding="2" cellspacing="2">
16407
16408        <tbody>
16409
16410          <tr>
16411
16412            <td style="vertical-align: top;"><span style="font-style: italic;">'absw'</span></td>
16413
16414            <td style="vertical-align: top;">The particle size depends on the absolute value of the resolved-scale vertical velocity w at the particle position.</td>
16415
16416          </tr>
16417
16418       
16419        </tbody>
16420     
16421      </table>
16422
16423      <br>
16424
16425The particle sizes ranges from 0.25*<a href="chapter_4.1.html#dx">dx</a> m to 0.85*<a href="chapter_4.1.html#dx">dx</a> m. The interval of values from the above listed quantities to be mapped to these sizes is defined by parameter <a href="#dvrpsize_interval">dvrpsize_interval</a>.<br>
16426
16427      <br>
16428
16429      <span style="font-weight: bold;">Example:</span><br>
16430
16431If <span style="font-weight: bold;">particle_dvrpsize</span> = <span style="font-style: italic;">'absw'</span> and <a href="#dvrpsize_interval">dvrpsize_interval</a> = <span style="font-style: italic;">1.0</span>, <span style="font-style: italic;">2.0</span>, then all particles at positions where the absolute value of w is &lt;= <span style="font-style: italic;">1.0</span> m/s will have a size of <span style="font-style: italic;">0.25*dx</span> m and those at positions with |w| &gt;= <span style="font-style: italic;">2.0</span> m/s will have a size of <span style="font-style: italic;">0.85*dx</span> m, while those with <span style="font-style: italic;">1.0</span> m/s &lt; |w| &lt; <span style="font-style: italic;">2.0</span> m/s will linearly vary in size from <span style="font-style: italic;">0.25*dx</span> m to <span style="font-style: italic;">0.85*dx</span> m.</td>
16432
16433    </tr>
16434
16435    <tr>
16436
16437
16438
16439
[108]16440 <td style="vertical-align: top;"><a name="slicer_range_limits_dvrp"></a><span style="font-weight: bold;">slicer_range_limits_<br>
16441
16442
16443
[354]16444
16445
[108]16446dvrp</span></td>
16447
16448
[354]16449
16450
[108]16451 <td style="vertical-align: top;">R(2,10)</td>
16452
16453
16454
[354]16455
16456
[108]16457      <td style="vertical-align: top;"><span style="font-style: italic;">10
16458* (-1,1)</span></td>
16459
16460
[354]16461
16462
[108]16463 <td style="vertical-align: top;">Ranges
[5]16464of values to which a color table has to be mapped (units of the
[108]16465respective quantity).<br>
16466
16467
[354]16468
16469
[108]16470 <br>
16471
16472
16473
[354]16474
16475
[5]16476In case that slicers have to be displayed (see <a href="#threshold">mode_dvrp</a>),
16477this parameter defines the ranges of values of the respective
16478quantities to which the colortable in use has to be mapped. If e.g. a
16479temperature slice shall be displayed, the colortable defines colors
16480from blue to red, and <span style="font-weight: bold;">slicer_range_limits_dvrp</span>
16481= 290.0, 305.0 then areas with temperature of 290 K are displayed in
16482dark blue and those with 305.0 are displayed in dark red. Temperatures
16483within these limits will be displayed by a continuous color gradient
16484from blue to red and Temperatures outside the limits will
[108]16485be displayed either in dark blue or in dark red.<br>
16486
16487
[354]16488
16489
[108]16490 <br>
16491
16492
16493
[354]16494
16495
[5]16496Up to ten different ranges can be assigned in case that more than one
[108]16497slicer has to be displayed.<br>
16498
16499
[354]16500
16501
[108]16502 <br>
16503
16504
16505
[354]16506
16507
[5]16508See <a href="#threshold">mode_dvrp</a>
[108]16509for the declaration of color charts.</td>
16510
16511
[354]16512
16513
[108]16514 </tr>
16515
16516
[354]16517
16518
[108]16519 <tr>
16520
16521
16522
[354]16523
16524
[108]16525      <td style="vertical-align: top;"> 
16526     
16527     
[354]16528     
16529     
[108]16530      <p><a name="superelevation"></a><b>superelevation</b></p>
16531
16532
16533
[354]16534
16535
[108]16536      </td>
16537
16538
[354]16539
16540
[108]16541 <td style="vertical-align: top;">R</td>
16542
16543
16544
[354]16545
16546
[108]16547      <td style="vertical-align: top;"><i>1.0</i></td>
16548
16549
16550
[354]16551
16552
[108]16553      <td style="vertical-align: top;"> 
16554     
16555     
[354]16556     
16557     
[108]16558      <p>Superelevation
16559factor for the vertical coordinate.&nbsp; </p>
16560
16561
[354]16562
16563
[108]16564 
16565     
16566     
[354]16567     
16568     
[108]16569      <p>For
[48]16570domains with unfavorable ratio between the vertical and
[5]16571the horizontal size
16572(the vertical size is determined by <a href="#nz_do3d">nz_do3d</a>)
[48]16573a <span style="font-weight: bold;">superelevation</span>
16574/= <span style="font-style: italic;">1.0</span> may
16575be used. If e.g. the
[5]16576horizontal size is substantially larger
16577than the vertical size, a <span style="font-weight: bold;">superelevation</span>
[48]16578much larger than <span style="font-style: italic;">1.0</span>
16579should
[5]16580be used, since otherwise the domain appears as a
16581"flat disk" in the visualization and thus the vertical direction is
[108]16582only very poorly resolved.</p>
16583
16584
[354]16585
16586
[108]16587 </td>
16588
16589
[354]16590
16591
[108]16592 </tr>
16593
16594
[354]16595
16596
[108]16597 <tr>
16598
16599
16600
[354]16601
16602
[108]16603      <td style="vertical-align: top;"> 
16604     
16605     
[354]16606     
16607     
[108]16608      <p><a name="superelevation_x"></a><b>superelevation_x</b></p>
16609
16610
16611
[354]16612
16613
[108]16614      </td>
16615
16616
[354]16617
16618
[108]16619 <td style="vertical-align: top;">R<br>
16620
16621
[354]16622
16623
[108]16624 </td>
16625
16626
16627
[354]16628
16629
[108]16630      <td style="vertical-align: top; font-style: italic;">1.0<br>
16631
16632
16633
[354]16634
16635
[108]16636      </td>
16637
16638
[354]16639
16640
[108]16641 <td style="vertical-align: top;"> 
16642     
16643     
[354]16644     
16645     
[108]16646      <p>Superelevation
16647factor for the horizontal (x) coordinate.&nbsp; </p>
16648
16649
[354]16650
16651
[108]16652 
16653     
16654     
[354]16655     
16656     
[108]16657      <p>This
[48]16658parameter can be used to stretch the displayed domain
[5]16659along the x-direction. See also <a href="#superelevation">superelevation</a>.</p>
[108]16660
16661
16662
[354]16663
16664
[108]16665      </td>
16666
16667
[354]16668
16669
[108]16670 </tr>
16671
16672
[354]16673
16674
[108]16675 <tr>
16676
16677
[354]16678
16679
[108]16680 <td style="vertical-align: top;"> 
16681     
16682     
[354]16683     
16684     
[108]16685      <p><a name="superelevation_y"></a><b>superelevation_y</b></p>
16686
16687
16688
[354]16689
16690
[108]16691      </td>
16692
16693
[354]16694
16695
[108]16696 <td style="vertical-align: top;">R<br>
16697
16698
[354]16699
16700
[108]16701 </td>
16702
16703
16704
[354]16705
16706
[108]16707      <td style="vertical-align: top; font-style: italic;">1.0<br>
16708
16709
16710
[354]16711
16712
[108]16713      </td>
16714
16715
[354]16716
16717
[108]16718 <td style="vertical-align: top;">Superelevation
[48]16719factor for the
[108]16720horizontal (y) coordinate.&nbsp; 
16721     
16722     
[354]16723     
16724     
[108]16725      <p>This parameter can be
[48]16726used to
[108]16727stretch the displayed domain along the y-direction. See also <a href="#superelevation">superelevation</a>.</p>
16728
16729
[354]16730
16731
[108]16732 </td>
16733
16734
16735
[354]16736
16737
[108]16738    </tr>
16739
16740
[354]16741
16742
[108]16743 <tr>
16744
16745
[354]16746
16747
[108]16748 <td style="vertical-align: top;">
16749     
16750     
[354]16751     
16752     
[108]16753      <p><a name="threshold"></a><b>threshold</b></p>
16754
16755
16756
[354]16757
16758
[108]16759      </td>
16760
16761
[354]16762
16763
[108]16764 <td style="vertical-align: top;">R(10)<br>
16765
16766
16767
[354]16768
16769
[108]16770      </td>
16771
16772
[354]16773
16774
[108]16775 <td style="vertical-align: top; font-style: italic;">0.0<br>
16776
16777
16778
[354]16779
16780
[108]16781      </td>
16782
16783
[354]16784
16785
[108]16786 <td style="vertical-align: top;"> 
16787     
16788     
[354]16789     
16790     
[108]16791      <p>Threshold
[48]16792value for which an isosurface is to be created by
16793the <span style="font-weight: bold;">dvrp</span>
[108]16794software.&nbsp; </p>
16795
16796
[354]16797
16798
[108]16799 
16800     
16801     
[354]16802     
16803     
[108]16804      <p>If the creation of
[48]16805isosurfaces is switched on via
[5]16806parameter <a href="#mode_dvrp">mode_dvrp</a>,
16807then the respective threshold value for which the isosurface is to be
[48]16808created can be assigned via <b>threshold</b>. If several
16809isosurfaces
16810are given by <b>mode_dvrp</b>, then an individual
16811threshold value for
[5]16812each isosurface can be assigned. The order of the threshold values
16813refers to the order of the isosurfaces given by <b>mode_dvrp</b>.</p>
[108]16814
16815
16816
[354]16817
16818
[108]16819      </td>
16820
16821
16822
16823
[354]16824 </tr>
16825
16826    <tr>
16827
16828      <td style="vertical-align: top;"><span style="font-weight: bold;"><a name="topography_color"></a>topography_color</span></td>
16829
16830      <td style="vertical-align: top;">R(3)</td>
16831
16832      <td style="vertical-align: top;"><span style="font-style: italic;">0.8, 0.7, 0.6</span></td>
16833
16834      <td style="vertical-align: top;">Color of the topography.<br>
16835
16836      <br>
16837
16838The color is given in RGB (red/green/blue) portions. If topograpy is switched on (see <a href="chapter_4.1.html#topography">topography</a>), its default color is a kind of gray.</td>
16839
16840    </tr>
16841
16842
16843
16844
[108]16845 
16846 
16847 
[354]16848 
16849 
[108]16850  </tbody>
16851</table>
16852
16853
[354]16854
16855
[108]16856<span style="font-weight: bold;"><span style="font-weight: bold;"><br>
16857
16858
16859
[354]16860
16861
[5]16862</span></span><span style="font-weight: bold;"><span style="font-weight: bold;">Package (<span style="font-weight: bold;">mrun</span>
16863option -p): <span style="font-weight: bold;"><a name="spectra"></a>spectra</span>&nbsp;&nbsp;&nbsp;&nbsp;
16864NAMELIST group name: <span style="font-weight: bold;">spectra_par<br>
[108]16865
16866
16867
[354]16868
16869
[108]16870<br>
16871
16872
[354]16873
16874
[108]16875</span></span></span>
16876<table style="text-align: left; width: 100%;" border="1" cellpadding="2" cellspacing="2">
16877
16878
[354]16879
16880
[108]16881 <tbody>
16882
16883
[354]16884
16885
[108]16886 <tr>
16887
16888
16889
[354]16890
16891
[108]16892      <td style="vertical-align: top;"><font size="4"><b>Parameter
16893name</b></font></td>
16894
16895
[354]16896
16897
[108]16898 <td style="vertical-align: top;"><font size="4"><b>Type</b></font></td>
16899
16900
16901
[354]16902
16903
[108]16904      <td style="vertical-align: top;"> 
16905     
16906     
[354]16907     
16908     
[108]16909      <p><b><font size="4">Default</font></b> <br>
16910
16911
[354]16912
16913
[108]16914 <b><font size="4">value</font></b></p>
16915
16916
[354]16917
16918
[108]16919 </td>
16920
16921
16922
[354]16923
16924
[108]16925      <td style="vertical-align: top;"><font size="4"><b>Explanation</b></font></td>
16926
16927
16928
[354]16929
16930
[108]16931    </tr>
16932
16933
[354]16934
16935
[108]16936 <tr>
16937
16938
[354]16939
16940
[108]16941 <td style="vertical-align: top;">
16942     
16943     
[354]16944     
16945     
[108]16946      <p><a name="averaging_interval_sp"></a><b>averaging_interval_sp</b></p>
16947
16948
16949
[354]16950
16951
[108]16952      </td>
16953
16954
[354]16955
16956
[108]16957 <td style="vertical-align: top;">R<br>
16958
16959
[354]16960
16961
[108]16962 </td>
16963
16964
16965
[354]16966
16967
[108]16968      <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="chapter_4.2.html#averaging_interval">averaging_<br>
16969
16970
16971
[354]16972
16973
[108]16974interval</a></span> </td>
16975
16976
[354]16977
16978
[108]16979 <td style="vertical-align: top;"> 
16980     
16981     
[354]16982     
16983     
[108]16984      <p>Averaging interval
[48]16985for spectra output to local
16986file <font color="#000000"><font color="#000000"><a href="chapter_3.4.html#DATA_1D_SP_NETCDF">DATA_1D_SP_NETCDF</a>
[108]16987      </font></font>and/or&nbsp; <a href="chapter_3.4.html#PLOTSP_X_DATA">PLOTSP_X_DATA</a>
[48]16988/ &nbsp;&nbsp; <a href="chapter_3.4.html#PLOTSP_Y_DATA">PLOTSP_Y_DATA</a>
[108]16989(in s).&nbsp; </p>
16990
16991
[354]16992
16993
[108]16994 
16995     
16996     
[354]16997     
16998     
[108]16999      <p>If
[5]17000this parameter is given a non-zero value, temporally
17001averaged spectra data are output. By default, spectra data data are not
17002subject to temporal averaging. The interval length is limited by the
[48]17003parameter <a href="#dt_dosp">dt_dosp</a>. In any
17004case <b>averaging_interval_sp</b> &lt;= <b>dt_dosp
[108]17005      </b>must
17006hold.</p>
17007
17008
[354]17009
17010
[108]17011If an interval is defined, then by default the average
[48]17012is calculated
[5]17013from the data values of all timesteps lying within this interval. The
17014number of time levels entering into the average can be reduced with the
17015parameter <a href="chapter_4.2.html#dt_averaging_input_pr">dt_averaging_input_pr</a>.
[108]17016     
17017     
[354]17018     
17019     
[108]17020      <p>If
[5]17021an averaging interval can not be completed at the end of a run, it will
17022be finished at the beginning of the next restart run. Thus for restart
17023runs, averaging intervals do not
[108]17024necessarily begin at the beginning of the run.</p>
17025
17026
[354]17027
17028
[108]17029      </td>
17030
17031
[354]17032
17033
[108]17034 </tr>
17035
17036
17037
[354]17038
17039
[108]17040    <tr>
17041
17042
[354]17043
17044
[108]17045 <td style="vertical-align: top;"><b><a name="comp_spectra_level"></a>comp_spectra_level</b></td>
17046
17047
17048
[354]17049
17050
[189]17051      <td style="vertical-align: top;">I(100)</td>
[108]17052
17053
[354]17054
17055
[108]17056 <td style="vertical-align: top;"><i>no level</i></td>
17057
17058
17059
[354]17060
17061
[108]17062      <td style="vertical-align: top;"> 
17063     
17064     
[354]17065     
17066     
[108]17067      <p>Vertical level
[48]17068for which horizontal spectra are to be
[108]17069calculated and output (gridpoints).<br>
17070
17071
[354]17072
17073
[108]17074 </p>
17075
17076
[354]17077
17078
[108]17079 <br>
17080
17081
17082
[354]17083
17084
[189]17085Spectra can be calculated for up to 100 levels.</td>
[108]17086
17087
[354]17088
17089
[108]17090 </tr>
17091
17092
17093
[354]17094
17095
[108]17096    <tr>
17097
17098
[354]17099
17100
[108]17101      <td style="vertical-align: top;">
17102     
17103     
[354]17104     
17105     
[108]17106      <p><a name="data_output_sp"></a><b>data_output_sp</b></p>
17107
17108
[354]17109
17110
[108]17111      </td>
17112
17113
[354]17114
17115
[108]17116      <td style="vertical-align: top;">C*10 (10)</td>
17117
17118
[354]17119
17120
[108]17121      <td style="vertical-align: top;"><i>10 * ' '</i></td>
17122
17123
[354]17124
17125
[108]17126      <td style="vertical-align: top;">
17127     
17128     
[354]17129     
17130     
[108]17131      <p>Quantities for which
[48]17132horizontal spectra are to be calculated
[108]17133and output.</p>
17134
17135
[354]17136
17137
[108]17138 
17139     
17140     
[354]17141     
17142     
[144]17143      <p>Allowed standard values are:&nbsp; <b>data_output_sp</b>
17144= <span style="font-style: italic;">'u'</span>, <span style="font-style: italic;">'v'</span>, <span style="font-style: italic;">'w'</span>, <span style="font-style: italic;">'pt'</span>, <span style="font-style: italic;">'q'</span>. The user may define further quantities (see <a href="chapter_3.5.4#spectra">chapter 3.5.4 part 5</a>).<br>
[108]17145
17146
[354]17147
17148
[108]17149 </p>
17150
17151
17152
[354]17153
17154
[108]17155     
17156     
[354]17157     
17158     
[108]17159      <p>Spectra are calculated using the FFT-method defined by <a href="chapter_4.1.html#fft_method">fft_method</a>.</p>
17160
17161
17162
[354]17163
17164
[108]17165     
17166     
[354]17167     
17168     
[108]17169      <p>By default spectra data are output to the local file <a href="chapter_3.4.html#DATA_1D_SP_NETCDF">DATA_1D_SP_NETCDF</a>.
[48]17170The file's format is NetCDF.&nbsp; Further details about processing
[108]17171NetCDF data are given in chapter <a href="chapter_4.5.1.html">4.5.1</a>.</p>
17172
17173
[354]17174
17175
[108]17176     
17177     
[354]17178     
17179     
[108]17180      <p>The
[48]17181temporal interval of the output times of profiles is
[108]17182assigned via the parameter <a href="chapter_4.2.html#dt_dosp">dt_dosp</a>.&nbsp;</p>
17183
17184
[354]17185
17186
[108]17187     
17188     
[354]17189     
17190     
[108]17191      <p>The
[48]17192vertical levels for which spectra are to be computed and output must be
17193given by parameter <font><a href="chapter_4.2.html#comp_spectra_level"><span lang="en-GB"><font face="Thorndale">comp_spectra_level</font></span></a></font>.
[108]17194      </p>
17195
17196
[354]17197
17198
[108]17199      <span style="font-weight: bold;">Note:</span><br>
17200
17201
17202
[354]17203
17204
[48]17205Beside <span style="font-weight: bold;">data_output_sp</span>,
17206values <span style="font-weight: bold;">must</span>
17207be given for each of the
[5]17208parameters,&nbsp; <font><a href="chapter_4.2.html#comp_spectra_level"><span lang="en-GB"><font face="Thorndale">comp_spectra_level</font></span></a></font>,
17209and <font><a href="chapter_4.2.html#spectra_direction"><span lang="en-GB"><font face="Thorndale">spectra_direction</font></span></a></font>,
[48]17210otherwise <span style="font-weight: bold;">no</span>
17211output will be
[108]17212created!<br>
17213
17214
[354]17215
17216
[108]17217      <br>
17218
17219
[354]17220
17221
[108]17222      <br>
17223
17224
17225
[354]17226
17227
[5]17228Calculation of spectra requires cyclic boundary conditions
17229along the respective directions (see <a href="chapter_4.1.html#bc_lr">bc_lr</a>
[48]17230and <a href="chapter_4.1.html#bc_ns">bc_ns</a>).For
17231historical reasons, data can also be output in ASCII-format on local
17232files <a href="chapter_3.4.html#PLOTSP_X_DATA">PLOTSP_X_DATA</a>
17233and/or <a href="chapter_3.4.html#PLOTSP_Y_DATA">PLOTSP_Y_DATA</a>
17234(depending on the direction(s) along which spectra are to be
17235calculated; see <font><a href="chapter_4.2.html#spectra_direction"><span lang="en-GB"><font face="Thorndale">spectra_direction</font></span></a>),</font>
17236which are readable by the graphic software <span style="font-weight: bold;">profil</span>. See
17237parameter <a href="chapter_4.2.html#data_output_format">data_output_format</a>
17238for defining the format in which data shall be output.&nbsp;Within
17239these file, the spectra are ordered with respect to their
[5]17240output times. Spectra can also be temporally averaged (see <a href="chapter_4.2.html#averaging_interval_sp">averaging_interval_sp</a>
[48]17241).&nbsp;<font><a href="chapter_4.2.html#spectra_direction"><span lang="en-GB"></span></a>Each data point of a
17242spectrum is output in a single line (1st column:
[5]17243wavenumber, 2nd column: spectral coefficient). If spectra are to be
17244calculated and output for more than one height (see </font><font><a href="chapter_4.2.html#comp_spectra_level"><span lang="en-GB"><font face="Thorndale">comp_spectra_level</font></span></a></font><font>),
17245the spectral coefficients for the further heighs can be found in the
17246subsequent columns. </font>The order
17247of the data in the file follows the order used in the assignment for <b>data_output_sp</b>
[493]17248(<b>data_output_sp</b> = <span style="font-style: italic;">'u'</span>, <span style="font-style: italic;">'v'</span>,&#8230;
[5]17249means that the file starts with the spectra of the u-component,
[48]17250followed by the v-component spectra, etc.). Additional to the files
17251PLOTSP_X_DATA and PLOTSP_Y_DATA which contain
[5]17252the data,
17253PALM creates NAMELIST parameter files (local name <a href="chapter_3.4.html#PLOTSP_X_PAR">PLOTSP_X_PAR</a>
17254and <a href="chapter_3.4.html#PLOTSP_X_PAR">PLOTSP_Y_PAR</a>)
17255which can be used as parameter input file for the plot software <a href="http://www.muk.uni-hannover.de/institut/software/profil_intro.html">profil</a>.
17256Spectra can be directly plotted with <span style="font-weight: bold;">profil</span>
17257using the data and the corresponding parameter file. The
17258plot layout is
17259steered via the parameter input file. The vertical levels for which
[48]17260spectra are to be plotted must be given by <font><a href="chapter_4.2.html#plot_spectra_level"><span lang="en-GB"><font face="Thorndale">plot_spectra_level</font></span></a></font><font><a href="chapter_4.2.html#comp_spectra_level"><span lang="en-GB"></span></a></font>. <span style="font-weight: bold;"></span>Otherwise, no
17261spectra
[5]17262will appear on the plot, although data are available on file. All
17263parameter values can be changed by editing the parameter
17264input
[108]17265file.<span style="font-weight: bold;"><br>
17266
17267
[354]17268
17269
[108]17270      </span></td>
17271
17272
[354]17273
17274
[108]17275    </tr>
17276
17277
[354]17278
17279
[108]17280    <tr>
17281
17282
17283
[354]17284
17285
[108]17286      <td style="vertical-align: top;"> 
17287     
17288     
[354]17289     
17290     
[108]17291      <p><a name="dt_dosp"></a><b>dt_dosp</b></p>
17292
17293
17294
[354]17295
17296
[108]17297      </td>
17298
17299
[354]17300
17301
[108]17302 <td style="vertical-align: top;">R</td>
17303
17304
17305
[354]17306
17307
[108]17308      <td style="vertical-align: top;"><i>value of
17309&nbsp;<a href="chapter_4.2.html#dt_data_output">dt_data_<br>
17310
17311
[354]17312
17313
[108]17314output</a></i></td>
17315
17316
17317
[354]17318
17319
[108]17320      <td style="vertical-align: top;"> 
17321     
17322     
[354]17323     
17324     
[108]17325      <p>Temporal
[48]17326interval at which&nbsp;spectra data shall be output
[108]17327(in s).&nbsp; </p>
17328
17329
[354]17330
17331
[108]17332 
17333     
17334     
[354]17335     
17336     
[108]17337      <p><span lang="en-GB"><font face="Thorndale">If output of
[48]17338horizontal spectra is switched on (see </font></span><a href="#data_output_sp"><span lang="en-GB"><font face="Thorndale">data_output_sp</font></span></a><span lang="en-GB"><font face="Thorndale">), </font></span><span lang="en-GB"><font face="Thorndale">this
17339parameter can be used to
[5]17340assign the temporal interval at which spectral data&nbsp; shall be
[48]17341output. </font></span><span lang="en-GB"><font face="Thorndale">Output can be skipped at the beginning of a
17342simulation using parameter <a href="#skip_time_dosp">skip_time_dosp</a>,
17343which has zero value by default. </font></span><span lang="en-GB"></span><span lang="en-GB"><font face="Thorndale">Reference
[5]17344time is the beginning of
17345&nbsp;the simulation, i.e. output takes place at times t = <span style="font-weight: bold;">skip_time_dosp</span> + <b>dt_dosp</b>,
[108]17346      <span style="font-weight: bold;">skip_time_dosp</span>
[48]17347+ 2*<b>dt_dosp</b>, skip_time_dosp + 3*<b>dt_dosp</b>,
17348etc. The actual output times can
17349deviate from these theoretical values (see </font></span><a href="#dt_dopr_zeitpunkte"><span lang="en-GB"><font face="Thorndale">dt_dopr</font></span></a><span lang="en-GB"><font face="Thorndale">).&nbsp;
17350If <b>dt_dosp</b> &lt; </font></span><a href="chapter_4.1.html#dt"><span lang="en-GB"><font face="Thorndale">dt</font></span></a><span lang="en-GB"><font face="Thorndale">, then
17351spectral data are output
[5]17352after each time step (if this is requested it should be <b>dt_dosp</b>
[108]17353= <i>0</i>).</font></span> </p>
17354
17355
[354]17356
17357
[108]17358 </td>
17359
17360
17361
[354]17362
17363
[108]17364    </tr>
17365
17366
[354]17367
17368
[108]17369 <tr>
17370
17371
[354]17372
17373
[108]17374 <td style="vertical-align: top;">
17375     
17376     
[354]17377     
17378     
[108]17379      <p><a name="plot_spectra_level"></a><b>plot_spectra_level</b></p>
17380
17381
17382
[354]17383
17384
[108]17385      </td>
17386
17387
[354]17388
17389
[189]17390 <td style="vertical-align: top;">I(100)</td>
[108]17391
17392
17393
[354]17394
17395
[108]17396      <td style="vertical-align: top;"><i>no level</i></td>
17397
17398
17399
[354]17400
17401
[108]17402      <td style="vertical-align: top;"> 
17403     
17404     
[354]17405     
17406     
[108]17407      <p>Vertical
[48]17408level(s) for which horizontal spectra are to be
[108]17409plotted (in gridpoints).&nbsp; </p>
17410
17411
[354]17412
17413
[108]17414 
17415     
17416     
[354]17417     
17418     
[108]17419      <p>This parameter
[48]17420only affects the display of spectra in plots
17421created with <span style="font-weight: bold;">profil</span>.
17422The
[5]17423spectral data created and output to file are exclusively determined via
[108]17424      <font><a href="#comp_spectra_level"><span lang="en-GB"><font face="Thorndale">comp_spectra_level</font></span></a></font>.</p>
17425
17426
17427
[354]17428
17429
[108]17430      </td>
17431
17432
[354]17433
17434
[108]17435 </tr>
17436
17437
[354]17438
17439
[108]17440 <tr>
17441
17442
[354]17443
17444
[108]17445 <td style="vertical-align: top;"><a name="skip_time_dosp"></a><span style="font-weight: bold;">skip_time_dosp</span></td>
17446
17447
17448
[354]17449
17450
[108]17451      <td style="vertical-align: top;">R<br>
17452
17453
[354]17454
17455
[108]17456 </td>
17457
17458
[354]17459
17460
[108]17461 <td style="vertical-align: top;"><span style="font-style: italic;">value of <a href="chapter_4.2.html#skip_time_data_output">skip_time_<br>
17462
17463
[354]17464
17465
[108]17466data_output</a></span>
17467      </td>
17468
17469
[354]17470
17471
[108]17472 <td style="vertical-align: top;">No output of
17473spectra data before this interval has passed (in s).<br>
17474
17475
[354]17476
17477
[108]17478      <br>
17479
17480
[354]17481
17482
[108]17483This
[48]17484parameter causes that data output activities are starting not before
17485this interval
[108]17486(counting from the beginning of the simulation, t=0) has passed. <br>
17487
17488
[354]17489
17490
[108]17491      <br>
17492
17493
[354]17494
17495
[108]17496      <span style="font-weight: bold;">Example:</span><br>
17497
17498
[354]17499
17500
[108]17501If
[48]17502the user has set <a href="#dt_dosp">dt_dosp</a> = <span style="font-style: italic;">3600.0</span> and <span style="font-weight: bold;">skip_time_dosp</span> = <span style="font-style: italic;">1800.0</span>, then the
[108]17503first output will be done at t = 5400 s. </td>
17504
17505
[354]17506
17507
[108]17508 </tr>
17509
17510
17511
[354]17512
17513
[108]17514    <tr>
17515
17516
[354]17517
17518
[108]17519 <td style="vertical-align: top;"> 
17520     
17521     
[354]17522     
17523     
[108]17524      <p><a name="spectra_direction"></a><b>spectra_direction</b></p>
17525
17526
17527
[354]17528
17529
[108]17530      </td>
17531
17532
[354]17533
17534
[108]17535 <td style="vertical-align: top;">C*2 (10)</td>
17536
17537
17538
[354]17539
17540
[108]17541      <td style="vertical-align: top;"><i>10 * ' '</i></td>
17542
17543
17544
[354]17545
17546
[108]17547      <td style="vertical-align: top;"> 
17548     
17549     
[354]17550     
17551     
[108]17552      <p>Direction(s)
17553along which spectra are to be calculated.&nbsp; </p>
17554
17555
[354]17556
17557
[108]17558 
17559     
17560     
[354]17561     
17562     
[108]17563      <p>Allowed
[48]17564values are <span style="font-style: italic;">'x'</span>,
[108]17565      <span style="font-style: italic;">'y'</span> and <span style="font-style: italic;">'xy'</span>. For
[5]17566every quantity given by <a href="#data_output_sp">data_output_sp</a>
17567a corresponding
[48]17568direction<span style="font-weight: bold;"> </span>must
[108]17569be assigned.<br>
17570
17571
[354]17572
17573
[108]17574 </p>
17575
17576
[354]17577
17578
[108]17579 
17580     
17581     
[354]17582     
17583     
[108]17584      <p>Calculation of spectra
[48]17585requires cyclic boundary conditions
[5]17586along the respective directions (see <a href="chapter_4.1.html#bc_lr">bc_lr</a>
17587and <a href="chapter_4.1.html#bc_ns">bc_ns</a>).</p>
[108]17588
17589
17590
[354]17591
17592
[108]17593      </td>
17594
17595
[354]17596
17597
[108]17598 </tr>
17599
17600
[354]17601
17602
[108]17603 
17604 
17605 
[354]17606 
17607 
[108]17608  </tbody>
17609</table>
17610
17611
[354]17612
17613
[108]17614<span style="font-weight: bold;"><span style="font-weight: bold;"><span style="font-weight: bold;"><br>
17615
17616
17617
[354]17618
17619
[108]17620</span></span></span>
17621<h3 style="line-height: 100%;"><br>
17622
17623
[354]17624
17625
[108]17626<a href="chapter_4.1.html"><img src="left.gif" name="Grafik1" align="bottom" border="2" height="32" width="32"></a><a href="index.html"><img src="up.gif" name="Grafik2" align="bottom" border="2" height="32" width="32"></a><a href="chapter_4.3.html"><img src="right.gif" name="Grafik3" align="bottom" border="2" height="32" width="32"></a></h3>
17627
17628
[354]17629
17630
[108]17631<span style="font-style: italic;">Last change:</span>
[61]17632$Id: chapter_4.2.html 555 2010-09-07 07:32:53Z maronga $ <span style="font-weight: bold;"><span style="font-weight: bold;"><br>
[108]17633
17634
17635
[354]17636
17637
[108]17638</span></span><br>
17639
17640
[354]17641
17642
[493]17643
17644</body></html>
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