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source: palm/trunk/SOURCE/spectra_mod.f90 @ 3948

Last change on this file since 3948 was 3805, checked in by raasch, 6 years ago
output format adjusted, unused variable removed
Property svn:keywords set to `Id`
File size: 29.3 KB

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1	!> @file spectra_mod.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of the PALM model system.
4	!
5	! PALM is free software: you can redistribute it and/or modify it under the
6	! terms of the GNU General Public License as published by the Free Software
7	! Foundation, either version 3 of the License, or (at your option) any later
8	! version.
9	!
10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
13	!
14	! You should have received a copy of the GNU General Public License along with
15	! PALM. If not, see <http://www.gnu.org/licenses/>.
16	!
17	! Copyright 1997-2019 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: spectra_mod.f90 3805 2019-03-20 15:26:35Z hellstea $
27	! unused variable removed
28	!
29	! 3655 2019-01-07 16:51:22Z knoop
30	! Renamed output variables
31	!
32	! 3248 2018-09-14 09:42:06Z sward
33	! Minor formating changes
34	!
35	! 3246 2018-09-13 15:14:50Z sward
36	! Added error handling for input namelist via parin_fail_message
37	!
38	! 3241 2018-09-12 15:02:00Z raasch
39	! unused variables removed
40	!
41	! 3049 2018-05-29 13:52:36Z Giersch
42	! Error messages revised
43	!
44	! 3045 2018-05-28 07:55:41Z Giersch
45	! Error message revised
46	!
47	! 2956 2018-04-10 11:01:03Z Giersch
48	! spectrum_x and spectrum_y will only be allocated if they are not allocated
49	! before (e.g. in case of restart runs)
50	!
51	! 2932 2018-03-26 09:39:22Z maronga
52	! renamed spectra_par to spectra_parameters
53	!
54	! 2841 2018-02-27 15:02:57Z knoop
55	! Bugfix: wrong placement of include 'mpif.h' corrected
56	!
57	! 2718 2018-01-02 08:49:38Z maronga
58	! Corrected "Former revisions" section
59	!
60	! 2696 2017-12-14 17:12:51Z kanani
61	! Change in file header (GPL part)
62	!
63	! 2216 2017-04-28 12:54:20Z suehring
64	!
65	! 2193 2017-03-22 04:21:28Z raasch
66	! Normalization of spectra output adjusted
67	!
68	! 2192 2017-03-22 04:14:10Z raasch
69	! bugfix for index bounds of arrays spectrum_x and spectrum_y
70	!
71	! 2000 2016-08-20 18:09:15Z knoop
72	! Forced header and separation lines into 80 columns
73	!
74	! 1960 2016-07-12 16:34:24Z suehring
75	! Additional default spectra for passive scalar
76	!
77	! 1833 2016-04-07 14:23:03Z raasch
78	! file renamed, reading the spectra_par NAMELIST moved from package_parin to
79	! here
80	!
81	! 1815 2016-04-06 13:49:59Z raasch
82	! bugfix: preprocessor directives included for the non-parallel case
83	!
84	! 1808 2016-04-05 19:44:00Z raasch
85	! MPI module used by default on all machines
86	!
87	! 1786 2016-03-08 05:49:27Z raasch
88	! routine is modularized, filename renamed from calc_spectra to spectrum,
89	! privious data module spectrum moved from modules.f90 to here,
90	! cpp-direktives for spectra removed, immediate return if no spectra levels are
91	! given
92	!
93	! 1682 2015-10-07 23:56:08Z knoop
94	! Code annotations made doxygen readable
95	!
96	! 1575 2015-03-27 09:56:27Z raasch
97	! adjustments for psolver-queries
98	!
99	! 1511 2014-12-16 15:54:16Z suehring
100	! Bugfix concerning spectra normalization
101	!
102	! 1431 2014-07-15 14:47:17Z suehring
103	! Wavenumber-integrated spectra coincide with respective variance.
104	!
105	! 1342 2014-03-26 17:04:47Z kanani
106	! REAL constants defined as wp-kinds
107	!
108	! 1324 2014-03-21 09:13:16Z suehring
109	! Bugfix: nzb_x, nzb_yd, nyn_x, nyn_x, nzt_x, nzt_yd belong to transpose_indices
110	!
111	! 1320 2014-03-20 08:40:49Z raasch
112	! ONLY-attribute added to USE-statements,
113	! kind-parameters added to all INTEGER and REAL declaration statements,
114	! kinds are defined in new module kinds,
115	! revision history before 2012 removed,
116	! comment fields (!:) to be used for variable explanations added to
117	! all variable declaration statements
118	!
119	! 1318 2014-03-17 13:35:16Z raasch
120	! module interfaces removed
121	!
122	! 1216 2013-08-26 09:31:42Z raasch
123	! resorting of array moved to separate routine resort_for_zx,
124	! one argument removed from the transpose_..d routines
125	!
126	! 1120 2013-04-05 15:11:35Z raasch
127	! bugfix: calls of fft_x\|y replaced by fft_x\|y_1d
128	!
129	! 1036 2012-10-22 13:43:42Z raasch
130	! code put under GPL (PALM 3.9)
131	!
132	! 1003 2012-09-14 14:35:53Z raasch
133	! adjustment of array tend for cases with unequal subdomain sizes removed
134	!
135	! Revision 1.1 2001/01/05 15:08:07 raasch
136	! Initial revision
137	!
138	!
139	! Description:
140	! ------------
141	!> Calculate horizontal spectra along x and y.
142	!> ATTENTION: 1d-decomposition along y still needs improvement, because in that
143	!> case the gridpoint number along z still depends on the PE number
144	!> because transpose_xz has to be used (and possibly also
145	!> transpose_zyd needs modification).
146	!------------------------------------------------------------------------------!
147	MODULE spectra_mod
148
149	USE kinds
150
151	PRIVATE
152
153	CHARACTER (LEN=2), DIMENSION(10) :: spectra_direction = 'x'
154	CHARACTER (LEN=10), DIMENSION(10) :: data_output_sp = ' '
155
156	INTEGER(iwp) :: average_count_sp = 0
157	INTEGER(iwp) :: dosp_time_count = 0
158	INTEGER(iwp) :: n_sp_x = 0, n_sp_y = 0
159
160	INTEGER(iwp) :: comp_spectra_level(100) = 999999
161
162	LOGICAL :: calculate_spectra = .FALSE. !< internal switch that spectra are calculated
163	LOGICAL :: spectra_initialized = .FALSE. !< internal switch that spectra related quantities are initialized
164
165	REAL(wp) :: averaging_interval_sp = 9999999.9_wp !< averaging interval for spectra output
166	REAL(wp) :: dt_dosp = 9999999.9_wp !< time interval for spectra output
167	REAL(wp) :: skip_time_dosp = 9999999.9_wp !< no output of spectra data before this interval has passed
168
169	REAL(wp), DIMENSION(:), ALLOCATABLE :: var_d
170
171	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: spectrum_x, spectrum_y
172
173	SAVE
174
175	INTERFACE calc_spectra
176	MODULE PROCEDURE calc_spectra
177	END INTERFACE calc_spectra
178
179	INTERFACE preprocess_spectra
180	MODULE PROCEDURE preprocess_spectra
181	END INTERFACE preprocess_spectra
182
183	INTERFACE calc_spectra_x
184	MODULE PROCEDURE calc_spectra_x
185	END INTERFACE calc_spectra_x
186
187	INTERFACE calc_spectra_y
188	MODULE PROCEDURE calc_spectra_y
189	END INTERFACE calc_spectra_y
190
191	INTERFACE spectra_check_parameters
192	MODULE PROCEDURE spectra_check_parameters
193	END INTERFACE spectra_check_parameters
194
195	INTERFACE spectra_header
196	MODULE PROCEDURE spectra_header
197	END INTERFACE spectra_header
198
199	INTERFACE spectra_init
200	MODULE PROCEDURE spectra_init
201	END INTERFACE spectra_init
202
203	INTERFACE spectra_parin
204	MODULE PROCEDURE spectra_parin
205	END INTERFACE spectra_parin
206
207	PUBLIC average_count_sp, averaging_interval_sp, calc_spectra, &
208	calculate_spectra, comp_spectra_level, data_output_sp, &
209	dosp_time_count, dt_dosp, n_sp_x, n_sp_y, &
210	skip_time_dosp, spectra_check_parameters, spectra_direction, &
211	spectra_header, spectra_init, spectra_parin, spectrum_x, &
212	spectrum_y, var_d
213
214
215	CONTAINS
216
217	!------------------------------------------------------------------------------!
218	! Description:
219	! ------------
220	!> Parin for &spectra_par for calculating spectra
221	!------------------------------------------------------------------------------!
222	SUBROUTINE spectra_parin
223
224	USE control_parameters, &
225	ONLY: dt_data_output, message_string
226
227	IMPLICIT NONE
228
229	CHARACTER (LEN=80) :: line !< dummy string that contains the current &
230	!< line of the parameter file
231
232	NAMELIST /spectra_par/ averaging_interval_sp, comp_spectra_level, &
233	data_output_sp, dt_dosp, skip_time_dosp, &
234	spectra_direction
235
236	NAMELIST /spectra_parameters/ &
237	averaging_interval_sp, comp_spectra_level, &
238	data_output_sp, dt_dosp, skip_time_dosp, &
239	spectra_direction
240	!
241	!-- Position the namelist-file at the beginning (it was already opened in
242	!-- parin), search for the namelist-group of the package and position the
243	!-- file at this line.
244	line = ' '
245
246	!
247	!-- Try to find the spectra package
248	REWIND ( 11 )
249	line = ' '
250	DO WHILE ( INDEX( line, '&spectra_parameters' ) == 0 )
251	READ ( 11, '(A)', END=12 ) line
252	ENDDO
253	BACKSPACE ( 11 )
254
255	!
256	!-- Read namelist
257	READ ( 11, spectra_parameters, ERR = 10 )
258
259	!
260	!-- Default setting of dt_dosp here (instead of check_parameters), because
261	!-- its current value is needed in init_pegrid
262	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
263
264	!
265	!-- Set general switch that spectra shall be calculated
266	calculate_spectra = .TRUE.
267
268	GOTO 14
269
270	10 BACKSPACE( 11 )
271	READ( 11 , '(A)') line
272	CALL parin_fail_message( 'spectra_parameters', line )
273	!
274	!-- Try to find the old namelist
275	12 REWIND ( 11 )
276	line = ' '
277	DO WHILE ( INDEX( line, '&spectra_par' ) == 0 )
278	READ ( 11, '(A)', END=14 ) line
279	ENDDO
280	BACKSPACE ( 11 )
281
282	!
283	!-- Read namelist
284	READ ( 11, spectra_par, ERR = 13, END = 14 )
285
286
287	message_string = 'namelist spectra_par is deprecated and will be ' // &
288	'removed in near future. Please use namelist ' // &
289	'spectra_parameters instead'
290	CALL message( 'spectra_parin', 'PA0487', 0, 1, 0, 6, 0 )
291	!
292	!-- Default setting of dt_dosp here (instead of check_parameters), because
293	!-- its current value is needed in init_pegrid
294	IF ( dt_dosp == 9999999.9_wp ) dt_dosp = dt_data_output
295
296	!
297	!-- Set general switch that spectra shall be calculated
298	calculate_spectra = .TRUE.
299
300	GOTO 14
301
302	13 BACKSPACE( 11 )
303	READ( 11 , '(A)') line
304	CALL parin_fail_message( 'spectra_par', line )
305
306
307	14 CONTINUE
308
309	END SUBROUTINE spectra_parin
310
311
312
313	!------------------------------------------------------------------------------!
314	! Description:
315	! ------------
316	!> Initialization of spectra related variables
317	!------------------------------------------------------------------------------!
318	SUBROUTINE spectra_init
319
320	USE indices, &
321	ONLY: nx, ny, nzb, nzt
322
323	IMPLICIT NONE
324
325	IF ( spectra_initialized ) RETURN
326
327	IF ( dt_dosp /= 9999999.9_wp ) THEN
328
329	IF ( .NOT. ALLOCATED( spectrum_x ) ) THEN
330	ALLOCATE( spectrum_x( 1:nx/2, 1:100, 1:10 ) )
331	spectrum_x = 0.0_wp
332	ENDIF
333
334	IF ( .NOT. ALLOCATED( spectrum_y ) ) THEN
335	ALLOCATE( spectrum_y( 1:ny/2, 1:100, 1:10 ) )
336	spectrum_y = 0.0_wp
337	ENDIF
338
339	ALLOCATE( var_d(nzb:nzt+1) )
340	var_d = 0.0_wp
341	ENDIF
342
343	spectra_initialized = .TRUE.
344
345	END SUBROUTINE spectra_init
346
347
348
349	!------------------------------------------------------------------------------!
350	! Description:
351	! ------------
352	!> Check spectra related quantities
353	!------------------------------------------------------------------------------!
354	SUBROUTINE spectra_check_parameters
355
356	USE control_parameters, &
357	ONLY: averaging_interval, message_string, skip_time_data_output
358
359	IMPLICIT NONE
360
361	!
362	!-- Check the average interval
363	IF ( averaging_interval_sp == 9999999.9_wp ) THEN
364	averaging_interval_sp = averaging_interval
365	ENDIF
366
367	IF ( averaging_interval_sp > dt_dosp ) THEN
368	WRITE( message_string, * ) 'averaging_interval_sp = ', &
369	averaging_interval_sp, ' must be <= dt_dosp = ', dt_dosp
370	CALL message( 'spectra_check_parameters', 'PA0087', 1, 2, 0, 6, 0 )
371	ENDIF
372
373	!
374	!-- Set the default skip time interval for data output, if necessary
375	IF ( skip_time_dosp == 9999999.9_wp ) &
376	skip_time_dosp = skip_time_data_output
377
378	END SUBROUTINE spectra_check_parameters
379
380
381
382	!------------------------------------------------------------------------------!
383	! Description:
384	! ------------
385	!> Header output for spectra
386	!>
387	!> @todo Output of netcdf data format and compression level
388	!------------------------------------------------------------------------------!
389	SUBROUTINE spectra_header ( io )
390
391	USE control_parameters, &
392	ONLY: dt_averaging_input_pr
393
394	! USE netcdf_interface, &
395	! ONLY: netcdf_data_format_string, netcdf_deflate
396
397	IMPLICIT NONE
398
399	! CHARACTER (LEN=40) :: output_format !< internal string
400
401	INTEGER(iwp) :: i !< internal counter
402	INTEGER(iwp), INTENT(IN) :: io !< Unit of the output file
403
404	!
405	!-- Spectra output
406	IF ( dt_dosp /= 9999999.9_wp ) THEN
407	WRITE ( io, 1 )
408
409	! output_format = netcdf_data_format_string
410	! IF ( netcdf_deflate == 0 ) THEN
411	! WRITE ( io, 2 ) output_format
412	! ELSE
413	! WRITE ( io, 3 ) TRIM( output_format ), netcdf_deflate
414	! ENDIF
415	WRITE ( io, 2 ) 'see profiles or other quantities'
416	WRITE ( io, 4 ) dt_dosp
417	IF ( skip_time_dosp /= 0.0_wp ) WRITE ( io, 5 ) skip_time_dosp
418	WRITE ( io, 6 ) ( data_output_sp(i), i = 1,10 ), &
419	( spectra_direction(i), i = 1,10 ), &
420	( comp_spectra_level(i), i = 1,100 ), &
421	averaging_interval_sp, dt_averaging_input_pr
422	ENDIF
423
424	1 FORMAT (' Spectra:')
425	2 FORMAT (' Output format: ',A/)
426	! 3 FORMAT (' Output format: ',A, ' compressed with level: ',I1/)
427	4 FORMAT (' Output every ',F7.1,' s'/)
428	5 FORMAT (' No output during initial ',F8.2,' s')
429	6 FORMAT (' Arrays: ', 10(A5,',')/ &
430	' Directions: ', 10(A5,',')/ &
431	' height levels k = ', 20(I3,',')/ &
432	' ', 20(I3,',')/ &
433	' ', 20(I3,',')/ &
434	' ', 20(I3,',')/ &
435	' ', 19(I3,','),I3,'.'/ &
436	' Time averaged over ', F7.1, ' s,' / &
437	' Profiles for the time averaging are taken every ', &
438	F6.1,' s')
439
440	END SUBROUTINE spectra_header
441
442
443
444	SUBROUTINE calc_spectra
445
446	USE arrays_3d, &
447	ONLY: d, tend
448
449	USE control_parameters, &
450	ONLY: bc_lr_cyc, bc_ns_cyc, message_string, psolver
451
452	USE cpulog, &
453	ONLY: cpu_log, log_point
454
455	USE fft_xy, &
456	ONLY: fft_init
457
458	USE indices, &
459	ONLY: nxl, nxr, nyn, nys, nzb, nzt
460
461	USE kinds
462
463	USE pegrid, &
464	ONLY: myid, pdims
465
466	IMPLICIT NONE
467
468	INTEGER(iwp) :: m !<
469	INTEGER(iwp) :: pr !<
470
471
472	!
473	!-- Check if user gave any levels for spectra to be calculated
474	IF ( comp_spectra_level(1) == 999999 ) RETURN
475
476	CALL cpu_log( log_point(30), 'calc_spectra', 'start' )
477
478	!
479	!-- Initialize spectra related quantities
480	CALL spectra_init
481
482	!
483	!-- Initialize ffts
484	CALL fft_init
485
486	!
487	!-- Reallocate array d in required size
488	IF ( psolver(1:9) == 'multigrid' ) THEN
489	DEALLOCATE( d )
490	ALLOCATE( d(nzb+1:nzt,nys:nyn,nxl:nxr) )
491	ENDIF
492
493	m = 1
494	DO WHILE ( data_output_sp(m) /= ' ' .AND. m <= 10 )
495	!
496	!-- Transposition from z --> x ( y --> x in case of a 1d-decomposition
497	!-- along x)
498	IF ( INDEX( spectra_direction(m), 'x' ) /= 0 ) THEN
499
500	!
501	!-- Calculation of spectra works for cyclic boundary conditions only
502	IF ( .NOT. bc_lr_cyc ) THEN
503
504	message_string = 'non-cyclic lateral boundaries along x do'// &
505	' not & allow calculation of spectra along x'
506	CALL message( 'calc_spectra', 'PA0160', 1, 2, 0, 6, 0 )
507	ENDIF
508
509	CALL preprocess_spectra( m, pr )
510
511	#if defined( __parallel )
512	IF ( pdims(2) /= 1 ) THEN
513	CALL resort_for_zx( d, tend )
514	CALL transpose_zx( tend, d )
515	ELSE
516	CALL transpose_yxd( d, d )
517	ENDIF
518	CALL calc_spectra_x( d, m )
519	#else
520	message_string = 'sorry, calculation of spectra in non paral' // &
521	'lel mode& is still not realized'
522	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
523	#endif
524
525	ENDIF
526
527	!
528	!-- Transposition from z --> y (d is rearranged only in case of a
529	!-- 1d-decomposition along x)
530	IF ( INDEX( spectra_direction(m), 'y' ) /= 0 ) THEN
531
532	!
533	!-- Calculation of spectra works for cyclic boundary conditions only
534	IF ( .NOT. bc_ns_cyc ) THEN
535	IF ( myid == 0 ) THEN
536	message_string = 'non-cyclic lateral boundaries along y' // &
537	' do not & allow calculation of spectra' //&
538	' along y'
539	CALL message( 'calc_spectra', 'PA0162', 1, 2, 0, 6, 0 )
540	ENDIF
541	CALL local_stop
542	ENDIF
543
544	CALL preprocess_spectra( m, pr )
545
546	#if defined( __parallel )
547	CALL transpose_zyd( d, d )
548	CALL calc_spectra_y( d, m )
549	#else
550	message_string = 'sorry, calculation of spectra in non paral' // &
551	'lel mode& is still not realized'
552	CALL message( 'calc_spectra', 'PA0161', 1, 2, 0, 6, 0 )
553	#endif
554
555	ENDIF
556
557	!
558	!-- Increase counter for next spectrum
559	m = m + 1
560
561	ENDDO
562
563	!
564	!-- Increase counter for averaging process in routine plot_spectra
565	average_count_sp = average_count_sp + 1
566
567	CALL cpu_log( log_point(30), 'calc_spectra', 'stop' )
568
569	END SUBROUTINE calc_spectra
570
571
572	!------------------------------------------------------------------------------!
573	! Description:
574	! ------------
575	!> @todo Missing subroutine description.
576	!------------------------------------------------------------------------------!
577	SUBROUTINE preprocess_spectra( m, pr )
578
579	USE arrays_3d, &
580	ONLY: d, pt, q, s, u, v, w
581
582	USE indices, &
583	ONLY: ngp_2dh, nxl, nxr, nyn, nys, nzb, nzt
584
585	USE kinds
586
587	#if defined( __parallel )
588	#if !defined( __mpifh )
589	USE MPI
590	#endif
591	#endif
592
593	USE pegrid, &
594	ONLY: collective_wait, comm2d, ierr
595
596	USE statistics, &
597	ONLY: hom
598
599
600	IMPLICIT NONE
601
602	#if defined( __parallel )
603	#if defined( __mpifh )
604	INCLUDE "mpif.h"
605	#endif
606	#endif
607
608	INTEGER(iwp) :: i !<
609	INTEGER(iwp) :: j !<
610	INTEGER(iwp) :: k !<
611	INTEGER(iwp) :: m !<
612	INTEGER(iwp) :: pr !<
613
614	REAL(wp), DIMENSION(nzb:nzt+1) :: var_d_l
615
616	SELECT CASE ( TRIM( data_output_sp(m) ) )
617
618	CASE ( 'u' )
619	pr = 1
620	d(nzb+1:nzt,nys:nyn,nxl:nxr) = u(nzb+1:nzt,nys:nyn,nxl:nxr)
621
622	CASE ( 'v' )
623	pr = 2
624	d(nzb+1:nzt,nys:nyn,nxl:nxr) = v(nzb+1:nzt,nys:nyn,nxl:nxr)
625
626	CASE ( 'w' )
627	pr = 3
628	d(nzb+1:nzt,nys:nyn,nxl:nxr) = w(nzb+1:nzt,nys:nyn,nxl:nxr)
629
630	CASE ( 'theta' )
631	pr = 4
632	d(nzb+1:nzt,nys:nyn,nxl:nxr) = pt(nzb+1:nzt,nys:nyn,nxl:nxr)
633
634	CASE ( 'q' )
635	pr = 41
636	d(nzb+1:nzt,nys:nyn,nxl:nxr) = q(nzb+1:nzt,nys:nyn,nxl:nxr)
637
638	CASE ( 's' )
639	pr = 117
640	d(nzb+1:nzt,nys:nyn,nxl:nxr) = s(nzb+1:nzt,nys:nyn,nxl:nxr)
641
642	CASE DEFAULT
643	!
644	!-- The DEFAULT case is reached either if the parameter data_output_sp(m)
645	!-- contains a wrong character string or if the user has coded a special
646	!-- case in the user interface. There, the subroutine user_spectra
647	!-- checks which of these two conditions applies.
648	CALL user_spectra( 'preprocess', m, pr )
649
650	END SELECT
651
652	!
653	!-- Subtract horizontal mean from the array, for which spectra have to be
654	!-- calculated. Moreover, calculate variance of the respective quantitiy,
655	!-- later used for normalizing spectra output.
656	var_d_l(:) = 0.0_wp
657	DO i = nxl, nxr
658	DO j = nys, nyn
659	DO k = nzb+1, nzt
660	d(k,j,i) = d(k,j,i) - hom(k,1,pr,0)
661	var_d_l(k) = var_d_l(k) + d(k,j,i) * d(k,j,i)
662	ENDDO
663	ENDDO
664	ENDDO
665	!
666	!-- Compute total variance from local variances
667	var_d(:) = 0.0_wp
668	#if defined( __parallel )
669	IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr )
670	CALL MPI_ALLREDUCE( var_d_l(0), var_d(0), nzt+1-nzb, MPI_REAL, MPI_SUM, &
671	comm2d, ierr )
672	#else
673	var_d(:) = var_d_l(:)
674	#endif
675	var_d(:) = var_d(:) / ngp_2dh(0)
676
677	END SUBROUTINE preprocess_spectra
678
679
680	!------------------------------------------------------------------------------!
681	! Description:
682	! ------------
683	!> @todo Missing subroutine description.
684	!------------------------------------------------------------------------------!
685	SUBROUTINE calc_spectra_x( ddd, m )
686
687	USE fft_xy, &
688	ONLY: fft_x_1d
689
690	USE grid_variables, &
691	ONLY: dx
692
693	USE indices, &
694	ONLY: nx, ny
695
696	USE kinds
697
698	#if defined( __parallel )
699	#if !defined( __mpifh )
700	USE MPI
701	#endif
702	#endif
703
704	USE pegrid, &
705	ONLY: comm2d, ierr, myid
706
707	USE transpose_indices, &
708	ONLY: nyn_x, nys_x, nzb_x, nzt_x
709
710
711	IMPLICIT NONE
712
713	#if defined( __parallel )
714	#if defined( __mpifh )
715	INCLUDE "mpif.h"
716	#endif
717	#endif
718
719	INTEGER(iwp) :: i !<
720	INTEGER(iwp) :: j !<
721	INTEGER(iwp) :: k !<
722	INTEGER(iwp) :: m !<
723	INTEGER(iwp) :: n !<
724
725	REAL(wp) :: exponent !<
726	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
727
728	REAL(wp), DIMENSION(0:nx) :: work !<
729
730	REAL(wp), DIMENSION(0:nx/2) :: sums_spectra_l !<
731
732	REAL(wp), DIMENSION(0:nx/2,100) :: sums_spectra !<
733
734	REAL(wp), DIMENSION(0:nx,nys_x:nyn_x,nzb_x:nzt_x) :: ddd !<
735
736	!
737	!-- Exponent for geometric average
738	exponent = 1.0_wp / ( ny + 1.0_wp )
739
740	!
741	!-- Loop over all levels defined by the user
742	n = 1
743	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
744
745	k = comp_spectra_level(n)
746
747	!
748	!-- Calculate FFT only if the corresponding level is situated on this PE
749	IF ( k >= nzb_x .AND. k <= nzt_x ) THEN
750
751	DO j = nys_x, nyn_x
752
753	work = ddd(0:nx,j,k)
754	CALL fft_x_1d( work, 'forward' )
755
756	ddd(0,j,k) = dx * work(0)**2
757	DO i = 1, nx/2
758	ddd(i,j,k) = dx * ( work(i)2 + work(nx+1-i)2 )
759	ENDDO
760
761	ENDDO
762
763	!
764	!-- Local sum and geometric average of these spectra
765	!-- (WARNING: no global sum should be performed, because floating
766	!-- point overflow may occur)
767	DO i = 0, nx/2
768
769	sums_spectra_l(i) = 1.0_wp
770	DO j = nys_x, nyn_x
771	sums_spectra_l(i) = sums_spectra_l(i) * ddd(i,j,k)**exponent
772	ENDDO
773
774	ENDDO
775
776	ELSE
777
778	sums_spectra_l = 1.0_wp
779
780	ENDIF
781
782	!
783	!-- Global sum of spectra on PE0 (from where they are written on file)
784	sums_spectra(:,n) = 0.0_wp
785	#if defined( __parallel )
786	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
787	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), nx/2+1, &
788	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
789	#else
790	sums_spectra(:,n) = sums_spectra_l
791	#endif
792	!
793	!-- Normalize spectra by variance
794	sum_spec_dum = SUM( sums_spectra(1:nx/2,n) )
795
796	IF ( sum_spec_dum /= 0.0_wp ) THEN
797	sums_spectra(1:nx/2,n) = sums_spectra(1:nx/2,n) * &
798	var_d(k) / sum_spec_dum
799	ENDIF
800	n = n + 1
801
802	ENDDO
803	n = n - 1
804
805	IF ( myid == 0 ) THEN
806	!
807	!-- Sum of spectra for later averaging (see routine data_output_spectra)
808	DO i = 1, nx/2
809	DO k = 1, n
810	spectrum_x(i,k,m) = spectrum_x(i,k,m) + sums_spectra(i,k)
811	ENDDO
812	ENDDO
813
814	ENDIF
815	!
816	!-- n_sp_x is needed by data_output_spectra_x
817	n_sp_x = n
818
819	END SUBROUTINE calc_spectra_x
820
821
822	!------------------------------------------------------------------------------!
823	! Description:
824	! ------------
825	!> @todo Missing subroutine description.
826	!------------------------------------------------------------------------------!
827	SUBROUTINE calc_spectra_y( ddd, m )
828
829	USE fft_xy, &
830	ONLY: fft_y_1d
831
832	USE grid_variables, &
833	ONLY: dy
834
835	USE indices, &
836	ONLY: nx, ny
837
838	USE kinds
839
840	#if defined( __parallel )
841	#if !defined( __mpifh )
842	USE MPI
843	#endif
844	#endif
845
846	USE pegrid, &
847	ONLY: comm2d, ierr, myid
848
849	USE transpose_indices, &
850	ONLY: nxl_yd, nxr_yd, nzb_yd, nzt_yd
851
852
853	IMPLICIT NONE
854
855	#if defined( __parallel )
856	#if defined( __mpifh )
857	INCLUDE "mpif.h"
858	#endif
859	#endif
860
861	INTEGER(iwp) :: i !<
862	INTEGER(iwp) :: j !<
863	INTEGER(iwp) :: k !<
864	INTEGER(iwp) :: m !<
865	INTEGER(iwp) :: n !<
866
867	REAL(wp) :: exponent !<
868	REAL(wp) :: sum_spec_dum !< wavenumber-integrated spectrum
869
870	REAL(wp), DIMENSION(0:ny) :: work !<
871
872	REAL(wp), DIMENSION(0:ny/2) :: sums_spectra_l !<
873
874	REAL(wp), DIMENSION(0:ny/2,100) :: sums_spectra !<
875
876	REAL(wp), DIMENSION(0:ny,nxl_yd:nxr_yd,nzb_yd:nzt_yd) :: ddd !<
877
878
879	!
880	!-- Exponent for geometric average
881	exponent = 1.0_wp / ( nx + 1.0_wp )
882
883	!
884	!-- Loop over all levels defined by the user
885	n = 1
886	DO WHILE ( comp_spectra_level(n) /= 999999 .AND. n <= 100 )
887
888	k = comp_spectra_level(n)
889
890	!
891	!-- Calculate FFT only if the corresponding level is situated on this PE
892	IF ( k >= nzb_yd .AND. k <= nzt_yd ) THEN
893
894	DO i = nxl_yd, nxr_yd
895
896	work = ddd(0:ny,i,k)
897	CALL fft_y_1d( work, 'forward' )
898
899	ddd(0,i,k) = dy * work(0)**2
900	DO j = 1, ny/2
901	ddd(j,i,k) = dy * ( work(j)2 + work(ny+1-j)2 )
902	ENDDO
903
904	ENDDO
905
906	!
907	!-- Local sum and geometric average of these spectra
908	!-- (WARNING: no global sum should be performed, because floating
909	!-- point overflow may occur)
910	DO j = 0, ny/2
911
912	sums_spectra_l(j) = 1.0_wp
913	DO i = nxl_yd, nxr_yd
914	sums_spectra_l(j) = sums_spectra_l(j) * ddd(j,i,k)**exponent
915	ENDDO
916
917	ENDDO
918
919	ELSE
920
921	sums_spectra_l = 1.0_wp
922
923	ENDIF
924
925	!
926	!-- Global sum of spectra on PE0 (from where they are written on file)
927	sums_spectra(:,n) = 0.0_wp
928	#if defined( __parallel )
929	CALL MPI_BARRIER( comm2d, ierr ) ! Necessary?
930	CALL MPI_REDUCE( sums_spectra_l(0), sums_spectra(0,n), ny/2+1, &
931	MPI_REAL, MPI_PROD, 0, comm2d, ierr )
932	#else
933	sums_spectra(:,n) = sums_spectra_l
934	#endif
935	!
936	!-- Normalize spectra by variance
937	sum_spec_dum = SUM( sums_spectra(1:ny/2,n) )
938	IF ( sum_spec_dum /= 0.0_wp ) THEN
939	sums_spectra(1:ny/2,n) = sums_spectra(1:ny/2,n) * &
940	var_d(k) / sum_spec_dum
941	ENDIF
942	n = n + 1
943
944	ENDDO
945	n = n - 1
946
947
948	IF ( myid == 0 ) THEN
949	!
950	!-- Sum of spectra for later averaging (see routine data_output_spectra)
951	DO j = 1, ny/2
952	DO k = 1, n
953	spectrum_y(j,k,m) = spectrum_y(j,k,m) + sums_spectra(j,k)
954	ENDDO
955	ENDDO
956
957	ENDIF
958
959	!
960	!-- n_sp_y is needed by data_output_spectra_y
961	n_sp_y = n
962
963	END SUBROUTINE calc_spectra_y
964
965	END MODULE spectra_mod

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