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source: palm/trunk/SOURCE/init_masks.f90 @ 3461

Last change on this file since 3461 was 3435, checked in by gronemeier, 6 years ago
new: terrain-following masked output; bugfixes: increase vertical dimension of gamma_w_green_sat by 1, add checks for masked output for chemistry_model and radiation_model, reordered calls to xxx_define_netcdf_grid in masked output part
Property svn:keywords set to `Id`
File size: 33.9 KB

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1	!> @file init_masks.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 1997-2018 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_masks.f90 3435 2018-10-26 18:25:44Z knoop $
27	! Add checks for chemistry and radiation model
28	! Set indices for terrain-following masked output
29	!
30	! 3421 2018-10-24 18:39:32Z gronemeier
31	! Renamed output variables
32	!
33	! 3419 2018-10-24 17:27:31Z gronemeier
34	! ocean renamed ocean_mode
35	!
36	! 3274 2018-09-24 15:42:55Z knoop
37	! Modularization of all bulk cloud physics code components
38	!
39	! 3065 2018-06-12 07:03:02Z Giersch
40	! dz_stretch_level was replaced by dz_stretch_level_start
41	!
42	! 3049 2018-05-29 13:52:36Z Giersch
43	! Error messages revised
44	!
45	! 3045 2018-05-28 07:55:41Z Giersch
46	! Error messages revised
47	!
48	! 2718 2018-01-02 08:49:38Z maronga
49	! Corrected "Former revisions" section
50	!
51	! 2696 2017-12-14 17:12:51Z kanani
52	! Change in file header (GPL part)
53	!
54	! 2344 2017-08-09 11:00:34Z raasch
55	! explicit setting of initial values for array domask required due to a bug
56	! in the Cray compiler (appears only if option -eD is used)
57	!
58	! 2301 2017-06-29 16:41:21Z gronemeier
59	! Bugfix: set variable name length to global value
60	!
61	!
62	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
63	! includes two more prognostic equations for cloud drop concentration (nc)
64	! and cloud water content (qc).
65	!
66	! 2271 2017-06-09 12:34:55Z sward
67	! Changed error message
68	!
69	! 2101 2017-01-05 16:42:31Z suehring
70	!
71	! 2031 2016-10-21 15:11:58Z knoop
72	! renamed variable rho to rho_ocean
73	!
74	! 2000 2016-08-20 18:09:15Z knoop
75	! Forced header and separation lines into 80 columns
76	!
77	! 1822 2016-04-07 07:49:42Z hoffmann
78	! icloud_scheme replaced by microphysics_*
79	!
80	! 1804 2016-04-05 16:30:18Z maronga
81	! Removed code for parameter file check (__check)
82	!
83	! 1783 2016-03-06 18:36:17Z raasch
84	! netcdf module name changed + related changes
85	!
86	! 1682 2015-10-07 23:56:08Z knoop
87	! Code annotations made doxygen readable
88	!
89	! 1438 2014-07-22 14:14:06Z heinze
90	! +nr, qc, qr
91	!
92	! 1414 2014-05-31 11:19:48Z gronemeier
93	! Bugfix: first and last grid points as they appear in 3D volume data can now
94	! be included to masked data output
95	!
96	! 1353 2014-04-08 15:21:23Z heinze
97	! REAL constants provided with KIND-attribute
98	!
99	! 1324 2014-03-21 09:13:16Z suehring
100	! Bugfix: ONLY statement for module netcdf_control removed
101	!
102	! 1320 2014-03-20 08:40:49Z raasch
103	! ONLY-attribute added to USE-statements,
104	! kind-parameters added to all INTEGER and REAL declaration statements,
105	! kinds are defined in new module kinds,
106	! revision history before 2012 removed,
107	! comment fields (!:) to be used for variable explanations added to
108	! all variable declaration statements
109	!
110	! 1186 2013-06-18 06:22:52Z raasch
111	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
112	! because a zero value does not work in case of ocean runs
113	!
114	! 1036 2012-10-22 13:43:42Z raasch
115	! code put under GPL (PALM 3.9)
116	!
117	! 1032 2012-10-21 13:03:21Z letzel
118	! mask locations determined based on scalar positions
119	!
120	! 1031 2012-10-19 14:35:30Z raasch
121	! netCDF4 without parallel file support implemented
122	!
123	! 996 2012-09-07 10:41:47Z raasch
124	! little reformatting
125	!
126	! 978 2012-08-09 08:28:32Z fricke
127	! +z0h*
128	!
129	! 809 2012-01-30 13:32:58Z maronga
130	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
131	!
132	! 807 2012-01-25 11:53:51Z maronga
133	! New cpp directive "__check" implemented which is used by check_namelist_files
134	!
135	! 410 2009-12-04 17:05:40Z letzel
136	! Initial revision
137	!
138	!
139	! Description:
140	! ------------
141	!> Initialize masked data output
142	!------------------------------------------------------------------------------!
143	SUBROUTINE init_masks
144
145	USE arrays_3d, &
146	ONLY: zu, zw
147
148	USE bulk_cloud_model_mod, &
149	ONLY: bulk_cloud_model, microphysics_morrison, microphysics_seifert
150
151	USE chemistry_model_mod, &
152	ONLY: chem_check_data_output
153
154	USE control_parameters, &
155	ONLY: air_chemistry, &
156	constant_diffusion, cloud_droplets, &
157	data_output_masks, data_output_masks_user, &
158	doav, doav_n, domask, domask_no, dz, dz_stretch_level_start, &
159	humidity, mask, masks, mask_scale, mask_i, &
160	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
161	mask_k_over_surface, &
162	mask_loop, mask_size, mask_size_l, mask_start_l, &
163	mask_surface, mask_x, &
164	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
165	mask_z_loop, max_masks, message_string, mid, &
166	passive_scalar, ocean_mode, varnamelength
167
168	USE grid_variables, &
169	ONLY: dx, dy
170
171	USE indices, &
172	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
173
174	USE kinds
175
176	USE netcdf_interface, &
177	ONLY: domask_unit, netcdf_data_format
178
179	USE particle_attributes, &
180	ONLY: particle_advection
181
182	USE pegrid
183
184	USE radiation_model_mod, &
185	ONLY: radiation, radiation_check_data_output
186
187	IMPLICIT NONE
188
189	CHARACTER (LEN=varnamelength) :: var !<
190	CHARACTER (LEN=7) :: unit !<
191
192	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !<
193	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !<
194
195	INTEGER(iwp) :: count !< counting masking indices along a dimension
196	INTEGER(iwp) :: i !<
197	INTEGER(iwp) :: ilen !<
198	INTEGER(iwp) :: ind(6) !<
199	INTEGER(iwp) :: ind_array(1) !<
200	INTEGER(iwp) :: j !<
201	INTEGER(iwp) :: k !<
202	INTEGER(iwp) :: m !< mask index
203	INTEGER(iwp) :: n !<
204	INTEGER(iwp) :: sender !<
205
206	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
207
208	LOGICAL :: found !<
209
210	!
211	!-- Initial values are explicitly set here due to a bug in the Cray compiler
212	!-- in case of assignments of initial values in declaration statements for
213	!-- arrays with more than 9999 elements (appears with -eD only)
214	domask = ' '
215
216	!
217	!-- Allocation and initialization
218	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
219
220	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
221	mask_j(max_masks,nyn-nys+2), &
222	mask_k(max_masks,nzt-nzb+2) )
223	!
224	!-- internal mask arrays ("mask,dimension,selection")
225	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
226	mask_loop(max_masks,3,3) )
227
228	!
229	!-- Parallel mask output not yet supported. In check_parameters data format
230	!-- is restricted and is switched back to non-parallel output. Therefore the
231	!-- following error can not occur at the moment.
232	IF ( netcdf_data_format > 4 ) THEN
233	message_string = 'netCDF file formats '// &
234	'5 and 6 (with parallel I/O support)'// &
235	' are currently not supported.'
236	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
237	ENDIF
238
239	!
240	!-- Store data output parameters for masked data output in few shared arrays
241	DO mid = 1, masks
242
243	do_mask (mid,:) = data_output_masks(mid,:)
244	do_mask_user(mid,:) = data_output_masks_user(mid,:)
245	mask (mid,1,:) = mask_x(mid,:)
246	mask (mid,2,:) = mask_y(mid,:)
247	mask (mid,3,:) = mask_z(mid,:)
248	!
249	!-- Flag a mask as terrain following
250	IF ( mask_k_over_surface(mid,1) /= -1_iwp ) THEN
251	mask_surface(mid) = .TRUE.
252	ENDIF
253
254	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
255	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
256	mask_loop(mid,1,1:2) = -1.0_wp
257	mask_loop(mid,1,3) = 0.0_wp
258	ELSE
259	mask_loop(mid,1,:) = mask_x_loop(mid,:)
260	ENDIF
261	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
262	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
263	mask_loop(mid,2,1:2) = -1.0_wp
264	mask_loop(mid,2,3) = 0.0_wp
265	ELSE
266	mask_loop(mid,2,:) = mask_y_loop(mid,:)
267	ENDIF
268	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
269	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
270	mask_loop(mid,3,1:2) = -1.0_wp
271	mask_loop(mid,3,3) = 0.0_wp
272	ELSE
273	mask_loop(mid,3,:) = mask_z_loop(mid,:)
274	ENDIF
275
276	ENDDO
277
278	mask_i = -1; mask_j = -1; mask_k = -1
279
280	!
281	!-- Global arrays are required by define_netcdf_header.
282	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
283	ALLOCATE( mask_i_global(max_masks,nx+2), &
284	mask_j_global(max_masks,ny+2), &
285	mask_k_global(max_masks,nz+2) )
286	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
287	ENDIF
288
289	!
290	!-- Determine variable names for each mask
291	DO mid = 1, masks
292	!
293	!-- Append user-defined data output variables to the standard data output
294	IF ( do_mask_user(mid,1) /= ' ' ) THEN
295	i = 1
296	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
297	i = i + 1
298	ENDDO
299	j = 1
300	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
301	IF ( i > 100 ) THEN
302	WRITE ( message_string, * ) 'number of output quantitities ', &
303	'given by data_output_mask and data_output_mask_user ', &
304	'exceeds the limit of 100'
305	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
306	ENDIF
307	do_mask(mid,i) = do_mask_user(mid,j)
308	i = i + 1
309	j = j + 1
310	ENDDO
311	ENDIF
312
313	!
314	!-- Check and set steering parameters for mask data output and averaging
315	i = 1
316	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
317	!
318	!-- Check for data averaging
319	ilen = LEN_TRIM( do_mask(mid,i) )
320	j = 0 ! no data averaging
321	IF ( ilen > 3 ) THEN
322	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
323	j = 1 ! data averaging
324	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
325	ENDIF
326	ENDIF
327	var = TRIM( do_mask(mid,i) )
328	!
329	!-- Check for allowed value and set units
330	SELECT CASE ( TRIM( var ) )
331
332	CASE ( 'e' )
333	IF ( constant_diffusion ) THEN
334	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
335	'" requires constant_diffusion = .FALSE.'
336	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
337	ENDIF
338	unit = 'm2/s2'
339
340	CASE ( 'thetal' )
341	IF ( .NOT. bulk_cloud_model ) THEN
342	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
343	'" requires bulk_cloud_model = .TRUE.'
344	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
345	ENDIF
346	unit = 'K'
347
348	CASE ( 'nc' )
349	IF ( .NOT. bulk_cloud_model ) THEN
350	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
351	'" requires bulk_cloud_model = .TRUE.'
352	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
353	ELSEIF ( .NOT. microphysics_morrison ) THEN
354	message_string = 'output of "' // TRIM( var ) // '" ' // &
355	'requires = morrison'
356	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
357	ENDIF
358	unit = '1/m3'
359
360	CASE ( 'nr' )
361	IF ( .NOT. bulk_cloud_model ) THEN
362	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
363	'" requires bulk_cloud_model = .TRUE.'
364	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
365	ELSEIF ( .NOT. microphysics_seifert ) THEN
366	message_string = 'output of "' // TRIM( var ) // '"' // &
367	'requires cloud_scheme = seifert_beheng'
368	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
369	ENDIF
370	unit = '1/m3'
371
372	CASE ( 'pc', 'pr' )
373	IF ( .NOT. particle_advection ) THEN
374	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
375	'" requires a "particles_par"-NAMELIST in the ', &
376	'parameter file (PARIN)'
377	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
378	ENDIF
379	IF ( TRIM( var ) == 'pc' ) unit = 'number'
380	IF ( TRIM( var ) == 'pr' ) unit = 'm'
381
382	CASE ( 'q', 'thetav' )
383	IF ( .NOT. humidity ) THEN
384	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
385	'" requires humidity = .TRUE.'
386	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
387	ENDIF
388	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
389	IF ( TRIM( var ) == 'thetav' ) unit = 'K'
390
391	CASE ( 'qc' )
392	IF ( .NOT. bulk_cloud_model ) THEN
393	message_string = 'output of "' // TRIM( var ) // '"' // &
394	'requires bulk_cloud_model = .TRUE.'
395	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
396	ENDIF
397	unit = 'kg/kg'
398
399	CASE ( 'ql' )
400	IF ( .NOT. ( bulk_cloud_model .OR. cloud_droplets ) ) THEN
401	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
402	'" requires bulk_cloud_model = .TRUE. or ', &
403	'cloud_droplets = .TRUE.'
404	CALL message( 'init_masks', 'PA0106', 1, 2, 0, 6, 0 )
405	ENDIF
406	unit = 'kg/kg'
407
408	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
409	IF ( .NOT. cloud_droplets ) THEN
410	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
411	'" requires cloud_droplets = .TRUE.'
412	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
413	ENDIF
414	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
415	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
416	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
417
418	CASE ( 'qv' )
419	IF ( .NOT. bulk_cloud_model ) THEN
420	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
421	'" requires bulk_cloud_model = .TRUE.'
422	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
423	ENDIF
424	unit = 'kg/kg'
425
426	CASE ( 'qr' )
427	IF ( .NOT. bulk_cloud_model ) THEN
428	message_string = 'output of "' // TRIM( var ) // '" ' // &
429	'requires bulk_cloud_model = .TRUE.'
430	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
431	ELSEIF ( .NOT. microphysics_seifert ) THEN
432	message_string = 'output of "' // TRIM( var ) // '" ' // &
433	'requires cloud_scheme = seifert_beheng'
434	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
435	ENDIF
436	unit = 'kg/kg'
437
438	CASE ( 'rho_sea_water' )
439	IF ( .NOT. ocean_mode ) THEN
440	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
441	'" requires ocean mode'
442	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
443	ENDIF
444	unit = 'kg/m3'
445
446	CASE ( 's' )
447	IF ( .NOT. passive_scalar ) THEN
448	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
449	'" requires passive_scalar = .TRUE.'
450	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
451	ENDIF
452	unit = 'conc'
453
454	CASE ( 'sa' )
455	IF ( .NOT. ocean_mode ) THEN
456	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
457	'" requires ocean mode'
458	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
459	ENDIF
460	unit = 'psu'
461
462	CASE ( 'us', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
463	WRITE ( message_string, * ) 'illegal value for data_', &
464	'output: "', TRIM( var ), '" is only allowed', &
465	'for horizontal cross section'
466	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
467
468	CASE ( 'p', 'theta', 'u', 'v', 'w' )
469	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
470	IF ( TRIM( var ) == 'theta' ) unit = 'K'
471	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
472	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
473	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
474	CONTINUE
475
476	CASE DEFAULT
477
478	CALL user_check_data_output( var, unit )
479
480	IF ( unit == 'illegal' .AND. air_chemistry &
481	.AND. (var(1:3) == 'kc_' .OR. var(1:3) == 'em_') ) THEN
482	CALL chem_check_data_output( var, unit, 0, 0, 0 )
483	ENDIF
484
485	IF ( unit == 'illegal' ) THEN
486	CALL radiation_check_data_output( var, unit, 0, 0, 0 )
487	ENDIF
488
489	IF ( unit == 'illegal' ) THEN
490	IF ( do_mask_user(mid,1) /= ' ' ) THEN
491	WRITE ( message_string, * ) 'illegal value for data_', &
492	'output_masks or data_output_masks_user: "', &
493	TRIM( do_mask(mid,i) ), '"'
494	CALL message( 'init_masks', 'PA0018', 1, 2, 0, 6, 0 )
495	ELSE
496	WRITE ( message_string, * ) 'illegal value for data_', &
497	' output_masks : "', TRIM( do_mask(mid,i) ), '"'
498	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
499	ENDIF
500	ENDIF
501
502	END SELECT
503	!
504	!-- Set the internal steering parameters appropriately
505	domask_no(mid,j) = domask_no(mid,j) + 1
506	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
507	domask_unit(mid,j,domask_no(mid,j)) = unit
508
509	IF ( j == 1 ) THEN
510	!
511	!-- Check, if variable is already subject to averaging
512	found = .FALSE.
513	DO k = 1, doav_n
514	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
515	ENDDO
516
517	IF ( .NOT. found ) THEN
518	doav_n = doav_n + 1
519	doav(doav_n) = var
520	ENDIF
521	ENDIF
522
523	i = i + 1
524
525	ENDDO ! do_mask(mid,i)
526	ENDDO ! mid
527
528
529	!
530	!-- Determine mask locations for each mask
531	DO mid = 1, masks
532	!
533	!-- Set local masks for each subdomain along all three dimensions
534	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
535	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
536	IF ( .NOT. mask_surface(mid) ) THEN
537	CALL set_mask_locations( 3, dz(1), 'dz', nz, 'nz', nzb, nzt )
538	ELSE
539	!
540	!-- Set vertical mask locations and size in case of terrain-following
541	!-- output
542	count = 0
543	DO WHILE ( mask_k_over_surface(mid, count+1) >= 0 )
544	m = mask_k_over_surface(mid, count+1)
545	IF ( m > nz+1 ) THEN
546	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
547	m,' in mask ',mid,' along dimension ', 3, &
548	' exceeds (nz+1) = ',nz+1
549	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
550	ENDIF
551	count = count + 1
552	mask_k(mid,count) = mask_k_over_surface(mid, count)
553	IF ( count == mask_xyz_dimension ) EXIT
554	ENDDO
555	mask_start_l(mid,3) = 1
556	mask_size(mid,3) = count
557	mask_size_l(mid,3) = count
558	ENDIF
559	!
560	!-- Set global masks along all three dimensions (required by
561	!-- define_netcdf_header).
562	#if defined( __parallel )
563	!
564	!-- PE0 receives partial arrays from all processors of the respective mask
565	!-- and outputs them. Here a barrier has to be set, because otherwise
566	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
567
568	CALL MPI_BARRIER( comm2d, ierr )
569
570	IF ( myid == 0 ) THEN
571	!
572	!-- Local arrays can be relocated directly.
573	mask_i_global(mid,mask_start_l(mid,1): &
574	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
575	mask_i(mid,:mask_size_l(mid,1))
576	mask_j_global(mid,mask_start_l(mid,2): &
577	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
578	mask_j(mid,:mask_size_l(mid,2))
579	mask_k_global(mid,mask_start_l(mid,3): &
580	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
581	mask_k(mid,:mask_size_l(mid,3))
582	!
583	!-- Receive data from all other PEs.
584	DO n = 1, numprocs-1
585	!
586	!-- Receive index limits first, then arrays.
587	!-- Index limits are received in arbitrary order from the PEs.
588	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
589	comm2d, status, ierr )
590	!
591	!-- Not all PEs have data for the mask.
592	IF ( ind(1) /= -9999 ) THEN
593	sender = status(MPI_SOURCE)
594	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
595	MPI_INTEGER, sender, 1, comm2d, status, ierr )
596	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
597	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
598	MPI_INTEGER, sender, 2, comm2d, status, ierr )
599	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
600	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
601	MPI_INTEGER, sender, 3, comm2d, status, ierr )
602	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
603	ENDIF
604	ENDDO
605
606	ELSE
607	!
608	!-- If at least part of the mask resides on the PE, send the index limits
609	!-- for the target array, otherwise send -9999 to PE0.
610	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
611	mask_size_l(mid,3) > 0 ) THEN
612	ind(1) = mask_start_l(mid,1)
613	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
614	ind(3) = mask_start_l(mid,2)
615	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
616	ind(5) = mask_start_l(mid,3)
617	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
618	ELSE
619	ind(1) = -9999; ind(2) = -9999
620	ind(3) = -9999; ind(4) = -9999
621	ind(5) = -9999; ind(6) = -9999
622	ENDIF
623	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
624	!
625	!-- If applicable, send data to PE0.
626	IF ( ind(1) /= -9999 ) THEN
627	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
628	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
629	MPI_INTEGER, 0, 1, comm2d, ierr )
630	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
631	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
632	MPI_INTEGER, 0, 2, comm2d, ierr )
633	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
634	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
635	MPI_INTEGER, 0, 3, comm2d, ierr )
636	ENDIF
637	ENDIF
638	!
639	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
640	!-- so that PE0 may receive wrong data on tag 0.
641	CALL MPI_BARRIER( comm2d, ierr )
642
643	IF ( netcdf_data_format > 4 ) THEN
644
645	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
646	ierr )
647	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
648	ierr )
649	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
650	ierr )
651
652	ENDIF
653
654	#else
655	!
656	!-- Local arrays can be relocated directly.
657	mask_i_global(mid,:) = mask_i(mid,:)
658	mask_j_global(mid,:) = mask_j(mid,:)
659	mask_k_global(mid,:) = mask_k(mid,:)
660	#endif
661	ENDDO ! mid
662
663	DEALLOCATE( tmp_array )
664	!
665	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
666	!-- required for header output on PE 0.
667	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
668
669	CONTAINS
670
671	!------------------------------------------------------------------------------!
672	! Description:
673	! ------------
674	!> Set local mask for each subdomain along 'dim' direction.
675	!------------------------------------------------------------------------------!
676	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
677	lb, ub )
678
679	IMPLICIT NONE
680
681	CHARACTER (LEN=2) :: dxyz_string !<
682	CHARACTER (LEN=2) :: nxyz_string !<
683
684	INTEGER(iwp) :: count !<
685	INTEGER(iwp) :: count_l !<
686	INTEGER(iwp) :: dim !<
687	INTEGER(iwp) :: m !<
688	INTEGER(iwp) :: loop_begin !<
689	INTEGER(iwp) :: loop_end !<
690	INTEGER(iwp) :: loop_stride !<
691	INTEGER(iwp) :: lb !<
692	INTEGER(iwp) :: nxyz !<
693	INTEGER(iwp) :: ub !<
694
695	REAL(wp) :: dxyz !<
696	REAL(wp) :: ddxyz !<
697	REAL(wp) :: tmp1 !<
698	REAL(wp) :: tmp2 !<
699
700	count = 0; count_l = 0
701	ddxyz = 1.0_wp / dxyz
702	tmp1 = 0.0_wp
703	tmp2 = 0.0_wp
704
705	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
706	!
707	!-- use predefined mask_* array
708	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
709	count = count + 1
710	IF ( dim == 1 .OR. dim == 2 ) THEN
711	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
712	IF ( m < 0 ) m = 0 ! avoid negative values
713	ELSEIF ( dim == 3 ) THEN
714	ind_array = &
715	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
716	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
717	ENDIF
718	IF ( m > (nxyz+1) ) THEN
719	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
720	m,' in mask ',mid,' along dimension ',dim, &
721	' exceeds (',nxyz_string,'+1) = ',nxyz+1
722	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
723	ENDIF
724	IF ( ( m >= lb .AND. m <= ub ) .OR. &
725	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
726	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
727	count_l = count_l + 1
728	IF ( dim == 1 ) THEN
729	mask_i(mid,count_l) = m
730	ELSEIF ( dim == 2 ) THEN
731	mask_j(mid,count_l) = m
732	ELSEIF ( dim == 3 ) THEN
733	mask_k(mid,count_l) = m
734	ENDIF
735	ENDIF
736	IF ( count == mask_xyz_dimension ) EXIT
737	ENDDO
738	mask_size(mid,dim) = count
739	mask_size_l(mid,dim) = count_l
740
741	ELSE
742	!
743	!-- use predefined mask_loop_* array, or use the default (all grid points
744	!-- along this direction)
745	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
746	tmp1 = mask_loop(mid,dim,1)
747	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
748	ENDIF
749	IF ( dim == 1 .OR. dim == 2 ) THEN
750	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
751	tmp2 = mask_loop(mid,dim,2)
752	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
753	ENDIF
754	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
755	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
756	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
757	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
758	' and/or mask_loop(',mid,',',dim,',2)=', &
759	mask_loop(mid,dim,2),' exceed (', &
760	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
761	(nxyz+1)*dxyz/mask_scale(dim)
762	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
763	ENDIF
764	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
765	* ddxyz - 0.5_wp )
766	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
767	* ddxyz - 0.5_wp )
768	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
769	* ddxyz )
770	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
771	ELSEIF ( dim == 3 ) THEN
772	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
773	tmp2 = mask_loop(mid,dim,2)
774	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
775	ENDIF
776	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
777	> zu(nz+1) / mask_scale(dim) ) THEN
778	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
779	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
780	' and/or mask_loop(',mid,',',dim,',2)=', &
781	mask_loop(mid,dim,2),' exceed zu(nz+1)/mask_scale(',dim, &
782	')=',zu(nz+1)/mask_scale(dim)
783	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
784	ENDIF
785	ind_array = &
786	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
787	loop_begin = &
788	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
789	ind_array = &
790	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
791	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
792	!
793	!-- The following line assumes a constant vertical grid spacing within
794	!-- the vertical mask range; it fails for vertical grid stretching.
795	!-- Maybe revise later. Issue warning but continue execution. ABS(...)
796	!-- within the IF statement is necessary because the default value of
797	!-- dz_stretch_level_start is -9999999.9_wp.
798	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
799
800	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > &
801	ABS( dz_stretch_level_start(1) ) ) THEN
802	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
803	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2), &
804	' exceeds dz_stretch_level=',dz_stretch_level_start(1), &
805	'.&Vertical mask locations will not ', &
806	'match the desired heights within the stretching ', &
807	'region.'
808	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
809	ENDIF
810
811	ENDIF
812	!
813	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
814	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
815	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
816	!
817	!-- The default stride +/-1 (every grid point) applies if
818	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
819	IF ( loop_stride == 0 ) THEN
820	IF ( loop_end >= loop_begin ) THEN
821	loop_stride = 1
822	ELSE
823	loop_stride = -1
824	ENDIF
825	ENDIF
826	DO m = loop_begin, loop_end, loop_stride
827	count = count + 1
828	IF ( ( m >= lb .AND. m <= ub ) .OR. &
829	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
830	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
831	count_l = count_l + 1
832	IF ( dim == 1 ) THEN
833	mask_i(mid,count_l) = m
834	ELSEIF ( dim == 2 ) THEN
835	mask_j(mid,count_l) = m
836	ELSEIF ( dim == 3 ) THEN
837	mask_k(mid,count_l) = m
838	ENDIF
839	ENDIF
840	ENDDO
841	mask_size(mid,dim) = count
842	mask_size_l(mid,dim) = count_l
843
844	ENDIF
845
846	END SUBROUTINE set_mask_locations
847
848	END SUBROUTINE init_masks

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