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source: palm/trunk/SOURCE/init_masks.f90 @ 3537

Last change on this file since 3537 was 3512, checked in by gronemeier, 6 years ago
Bugfix: do not output ghost points if mask_x/y_loop is not specified (init_masks)
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File size: 34.4 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 3512 2018-11-09 18:09:51Z eckhard $
27	! Bugfix: do not output ghost points if mask_x/y_loop is not specified
28	!
29	! 3467 2018-10-30 19:05:21Z suehring
30	! Implementation of a new aerosol module salsa.
31	!
32	! 3435 2018-10-26 18:25:44Z gronemeier
33	! Add checks for chemistry and radiation model
34	! Set indices for terrain-following masked output
35	!
36	! 3421 2018-10-24 18:39:32Z gronemeier
37	! Renamed output variables
38	!
39	! 3419 2018-10-24 17:27:31Z gronemeier
40	! ocean renamed ocean_mode
41	!
42	! 3274 2018-09-24 15:42:55Z knoop
43	! Modularization of all bulk cloud physics code components
44	!
45	! 3065 2018-06-12 07:03:02Z Giersch
46	! dz_stretch_level was replaced by dz_stretch_level_start
47	!
48	! 3049 2018-05-29 13:52:36Z Giersch
49	! Error messages revised
50	!
51	! 3045 2018-05-28 07:55:41Z Giersch
52	! Error messages revised
53	!
54	! 2718 2018-01-02 08:49:38Z maronga
55	! Corrected "Former revisions" section
56	!
57	! 2696 2017-12-14 17:12:51Z kanani
58	! Change in file header (GPL part)
59	!
60	! 2344 2017-08-09 11:00:34Z raasch
61	! explicit setting of initial values for array domask required due to a bug
62	! in the Cray compiler (appears only if option -eD is used)
63	!
64	! 2301 2017-06-29 16:41:21Z gronemeier
65	! Bugfix: set variable name length to global value
66	!
67	!
68	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
69	! includes two more prognostic equations for cloud drop concentration (nc)
70	! and cloud water content (qc).
71	!
72	! 2271 2017-06-09 12:34:55Z sward
73	! Changed error message
74	!
75	! 2101 2017-01-05 16:42:31Z suehring
76	!
77	! 2031 2016-10-21 15:11:58Z knoop
78	! renamed variable rho to rho_ocean
79	!
80	! 2000 2016-08-20 18:09:15Z knoop
81	! Forced header and separation lines into 80 columns
82	!
83	! 1822 2016-04-07 07:49:42Z hoffmann
84	! icloud_scheme replaced by microphysics_*
85	!
86	! 1804 2016-04-05 16:30:18Z maronga
87	! Removed code for parameter file check (__check)
88	!
89	! 1783 2016-03-06 18:36:17Z raasch
90	! netcdf module name changed + related changes
91	!
92	! 1682 2015-10-07 23:56:08Z knoop
93	! Code annotations made doxygen readable
94	!
95	! 1438 2014-07-22 14:14:06Z heinze
96	! +nr, qc, qr
97	!
98	! 1414 2014-05-31 11:19:48Z gronemeier
99	! Bugfix: first and last grid points as they appear in 3D volume data can now
100	! be included to masked data output
101	!
102	! 1353 2014-04-08 15:21:23Z heinze
103	! REAL constants provided with KIND-attribute
104	!
105	! 1324 2014-03-21 09:13:16Z suehring
106	! Bugfix: ONLY statement for module netcdf_control removed
107	!
108	! 1320 2014-03-20 08:40:49Z raasch
109	! ONLY-attribute added to USE-statements,
110	! kind-parameters added to all INTEGER and REAL declaration statements,
111	! kinds are defined in new module kinds,
112	! revision history before 2012 removed,
113	! comment fields (!:) to be used for variable explanations added to
114	! all variable declaration statements
115	!
116	! 1186 2013-06-18 06:22:52Z raasch
117	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
118	! because a zero value does not work in case of ocean runs
119	!
120	! 1036 2012-10-22 13:43:42Z raasch
121	! code put under GPL (PALM 3.9)
122	!
123	! 1032 2012-10-21 13:03:21Z letzel
124	! mask locations determined based on scalar positions
125	!
126	! 1031 2012-10-19 14:35:30Z raasch
127	! netCDF4 without parallel file support implemented
128	!
129	! 996 2012-09-07 10:41:47Z raasch
130	! little reformatting
131	!
132	! 978 2012-08-09 08:28:32Z fricke
133	! +z0h*
134	!
135	! 809 2012-01-30 13:32:58Z maronga
136	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
137	!
138	! 807 2012-01-25 11:53:51Z maronga
139	! New cpp directive "__check" implemented which is used by check_namelist_files
140	!
141	! 410 2009-12-04 17:05:40Z letzel
142	! Initial revision
143	!
144	!
145	! Description:
146	! ------------
147	!> Initialize masked data output
148	!------------------------------------------------------------------------------!
149	SUBROUTINE init_masks
150
151	USE arrays_3d, &
152	ONLY: zu, zw
153
154	USE bulk_cloud_model_mod, &
155	ONLY: bulk_cloud_model, microphysics_morrison, microphysics_seifert
156
157	USE chemistry_model_mod, &
158	ONLY: chem_check_data_output
159
160	USE control_parameters, &
161	ONLY: air_chemistry, &
162	constant_diffusion, cloud_droplets, &
163	data_output_masks, data_output_masks_user, &
164	doav, doav_n, domask, domask_no, dz, dz_stretch_level_start, &
165	humidity, mask, masks, mask_scale, mask_i, &
166	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
167	mask_k_over_surface, &
168	mask_loop, mask_size, mask_size_l, mask_start_l, &
169	mask_surface, mask_x, &
170	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
171	mask_z_loop, max_masks, message_string, mid, &
172	passive_scalar, ocean_mode, varnamelength
173
174	USE grid_variables, &
175	ONLY: dx, dy
176
177	USE indices, &
178	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
179
180	USE kinds
181
182	USE netcdf_interface, &
183	ONLY: domask_unit, netcdf_data_format
184
185	USE particle_attributes, &
186	ONLY: particle_advection
187
188	USE pegrid
189
190	USE radiation_model_mod, &
191	ONLY: radiation, radiation_check_data_output
192
193	USE salsa_mod, &
194	ONLY: salsa, salsa_check_data_output
195
196	IMPLICIT NONE
197
198	CHARACTER (LEN=varnamelength) :: var !<
199	CHARACTER (LEN=7) :: unit !<
200
201	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !<
202	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !<
203
204	INTEGER(iwp) :: count !< counting masking indices along a dimension
205	INTEGER(iwp) :: i !<
206	INTEGER(iwp) :: ilen !<
207	INTEGER(iwp) :: ind(6) !<
208	INTEGER(iwp) :: ind_array(1) !<
209	INTEGER(iwp) :: j !<
210	INTEGER(iwp) :: k !<
211	INTEGER(iwp) :: m !< mask index
212	INTEGER(iwp) :: n !<
213	INTEGER(iwp) :: sender !<
214
215	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
216
217	LOGICAL :: found !<
218
219	!
220	!-- Initial values are explicitly set here due to a bug in the Cray compiler
221	!-- in case of assignments of initial values in declaration statements for
222	!-- arrays with more than 9999 elements (appears with -eD only)
223	domask = ' '
224
225	!
226	!-- Allocation and initialization
227	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
228
229	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
230	mask_j(max_masks,nyn-nys+2), &
231	mask_k(max_masks,nzt-nzb+2) )
232	!
233	!-- internal mask arrays ("mask,dimension,selection")
234	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
235	mask_loop(max_masks,3,3) )
236
237	!
238	!-- Parallel mask output not yet supported. In check_parameters data format
239	!-- is restricted and is switched back to non-parallel output. Therefore the
240	!-- following error can not occur at the moment.
241	IF ( netcdf_data_format > 4 ) THEN
242	message_string = 'netCDF file formats '// &
243	'5 and 6 (with parallel I/O support)'// &
244	' are currently not supported.'
245	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
246	ENDIF
247
248	!
249	!-- Store data output parameters for masked data output in few shared arrays
250	DO mid = 1, masks
251
252	do_mask (mid,:) = data_output_masks(mid,:)
253	do_mask_user(mid,:) = data_output_masks_user(mid,:)
254	mask (mid,1,:) = mask_x(mid,:)
255	mask (mid,2,:) = mask_y(mid,:)
256	mask (mid,3,:) = mask_z(mid,:)
257	!
258	!-- Flag a mask as terrain following
259	IF ( mask_k_over_surface(mid,1) /= -1_iwp ) THEN
260	mask_surface(mid) = .TRUE.
261	ENDIF
262
263	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
264	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
265	mask_loop(mid,1,1:2) = -1.0_wp
266	mask_loop(mid,1,3) = 0.0_wp
267	ELSE
268	mask_loop(mid,1,:) = mask_x_loop(mid,:)
269	ENDIF
270	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
271	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
272	mask_loop(mid,2,1:2) = -1.0_wp
273	mask_loop(mid,2,3) = 0.0_wp
274	ELSE
275	mask_loop(mid,2,:) = mask_y_loop(mid,:)
276	ENDIF
277	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
278	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
279	mask_loop(mid,3,1:2) = -1.0_wp
280	mask_loop(mid,3,3) = 0.0_wp
281	ELSE
282	mask_loop(mid,3,:) = mask_z_loop(mid,:)
283	ENDIF
284
285	ENDDO
286
287	mask_i = -1; mask_j = -1; mask_k = -1
288
289	!
290	!-- Global arrays are required by define_netcdf_header.
291	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
292	ALLOCATE( mask_i_global(max_masks,nx+2), &
293	mask_j_global(max_masks,ny+2), &
294	mask_k_global(max_masks,nz+2) )
295	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
296	ENDIF
297
298	!
299	!-- Determine variable names for each mask
300	DO mid = 1, masks
301	!
302	!-- Append user-defined data output variables to the standard data output
303	IF ( do_mask_user(mid,1) /= ' ' ) THEN
304	i = 1
305	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
306	i = i + 1
307	ENDDO
308	j = 1
309	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
310	IF ( i > 100 ) THEN
311	WRITE ( message_string, * ) 'number of output quantitities ', &
312	'given by data_output_mask and data_output_mask_user ', &
313	'exceeds the limit of 100'
314	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
315	ENDIF
316	do_mask(mid,i) = do_mask_user(mid,j)
317	i = i + 1
318	j = j + 1
319	ENDDO
320	ENDIF
321
322	!
323	!-- Check and set steering parameters for mask data output and averaging
324	i = 1
325	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
326	!
327	!-- Check for data averaging
328	ilen = LEN_TRIM( do_mask(mid,i) )
329	j = 0 ! no data averaging
330	IF ( ilen > 3 ) THEN
331	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
332	j = 1 ! data averaging
333	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
334	ENDIF
335	ENDIF
336	var = TRIM( do_mask(mid,i) )
337	!
338	!-- Check for allowed value and set units
339	SELECT CASE ( TRIM( var ) )
340
341	CASE ( 'e' )
342	IF ( constant_diffusion ) THEN
343	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
344	'" requires constant_diffusion = .FALSE.'
345	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
346	ENDIF
347	unit = 'm2/s2'
348
349	CASE ( 'thetal' )
350	IF ( .NOT. bulk_cloud_model ) THEN
351	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
352	'" requires bulk_cloud_model = .TRUE.'
353	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
354	ENDIF
355	unit = 'K'
356
357	CASE ( 'nc' )
358	IF ( .NOT. bulk_cloud_model ) THEN
359	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
360	'" requires bulk_cloud_model = .TRUE.'
361	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
362	ELSEIF ( .NOT. microphysics_morrison ) THEN
363	message_string = 'output of "' // TRIM( var ) // '" ' // &
364	'requires = morrison'
365	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
366	ENDIF
367	unit = '1/m3'
368
369	CASE ( 'nr' )
370	IF ( .NOT. bulk_cloud_model ) THEN
371	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
372	'" requires bulk_cloud_model = .TRUE.'
373	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
374	ELSEIF ( .NOT. microphysics_seifert ) THEN
375	message_string = 'output of "' // TRIM( var ) // '"' // &
376	'requires cloud_scheme = seifert_beheng'
377	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
378	ENDIF
379	unit = '1/m3'
380
381	CASE ( 'pc', 'pr' )
382	IF ( .NOT. particle_advection ) THEN
383	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
384	'" requires a "particles_par"-NAMELIST in the ', &
385	'parameter file (PARIN)'
386	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
387	ENDIF
388	IF ( TRIM( var ) == 'pc' ) unit = 'number'
389	IF ( TRIM( var ) == 'pr' ) unit = 'm'
390
391	CASE ( 'q', 'thetav' )
392	IF ( .NOT. humidity ) THEN
393	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
394	'" requires humidity = .TRUE.'
395	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
396	ENDIF
397	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
398	IF ( TRIM( var ) == 'thetav' ) unit = 'K'
399
400	CASE ( 'qc' )
401	IF ( .NOT. bulk_cloud_model ) THEN
402	message_string = 'output of "' // TRIM( var ) // '"' // &
403	'requires bulk_cloud_model = .TRUE.'
404	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
405	ENDIF
406	unit = 'kg/kg'
407
408	CASE ( 'ql' )
409	IF ( .NOT. ( bulk_cloud_model .OR. cloud_droplets ) ) THEN
410	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
411	'" requires bulk_cloud_model = .TRUE. or ', &
412	'cloud_droplets = .TRUE.'
413	CALL message( 'init_masks', 'PA0106', 1, 2, 0, 6, 0 )
414	ENDIF
415	unit = 'kg/kg'
416
417	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
418	IF ( .NOT. cloud_droplets ) THEN
419	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
420	'" requires cloud_droplets = .TRUE.'
421	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
422	ENDIF
423	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
424	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
425	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
426
427	CASE ( 'qv' )
428	IF ( .NOT. bulk_cloud_model ) THEN
429	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
430	'" requires bulk_cloud_model = .TRUE.'
431	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
432	ENDIF
433	unit = 'kg/kg'
434
435	CASE ( 'qr' )
436	IF ( .NOT. bulk_cloud_model ) THEN
437	message_string = 'output of "' // TRIM( var ) // '" ' // &
438	'requires bulk_cloud_model = .TRUE.'
439	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
440	ELSEIF ( .NOT. microphysics_seifert ) THEN
441	message_string = 'output of "' // TRIM( var ) // '" ' // &
442	'requires cloud_scheme = seifert_beheng'
443	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
444	ENDIF
445	unit = 'kg/kg'
446
447	CASE ( 'rho_sea_water' )
448	IF ( .NOT. ocean_mode ) THEN
449	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
450	'" requires ocean mode'
451	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
452	ENDIF
453	unit = 'kg/m3'
454
455	CASE ( 's' )
456	IF ( .NOT. passive_scalar ) THEN
457	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
458	'" requires passive_scalar = .TRUE.'
459	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
460	ENDIF
461	unit = 'conc'
462
463	CASE ( 'sa' )
464	IF ( .NOT. ocean_mode ) THEN
465	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
466	'" requires ocean mode'
467	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
468	ENDIF
469	unit = 'psu'
470
471	CASE ( 'us', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
472	WRITE ( message_string, * ) 'illegal value for data_', &
473	'output: "', TRIM( var ), '" is only allowed', &
474	'for horizontal cross section'
475	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
476
477	CASE ( 'p', 'theta', 'u', 'v', 'w' )
478	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
479	IF ( TRIM( var ) == 'theta' ) unit = 'K'
480	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
481	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
482	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
483	CONTINUE
484
485	CASE DEFAULT
486
487	CALL user_check_data_output( var, unit )
488
489	IF ( salsa ) THEN
490	CALL salsa_check_data_output( var, unit )
491	ENDIF
492
493	IF ( unit == 'illegal' .AND. air_chemistry &
494	.AND. (var(1:3) == 'kc_' .OR. var(1:3) == 'em_') ) THEN
495	CALL chem_check_data_output( var, unit, 0, 0, 0 )
496	ENDIF
497
498	IF ( unit == 'illegal' ) THEN
499	CALL radiation_check_data_output( var, unit, 0, 0, 0 )
500	ENDIF
501
502	IF ( unit == 'illegal' ) THEN
503	IF ( do_mask_user(mid,1) /= ' ' ) THEN
504	WRITE ( message_string, * ) 'illegal value for data_', &
505	'output_masks or data_output_masks_user: "', &
506	TRIM( do_mask(mid,i) ), '"'
507	CALL message( 'init_masks', 'PA0018', 1, 2, 0, 6, 0 )
508	ELSE
509	WRITE ( message_string, * ) 'illegal value for data_', &
510	' output_masks : "', TRIM( do_mask(mid,i) ), '"'
511	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
512	ENDIF
513	ENDIF
514
515	END SELECT
516	!
517	!-- Set the internal steering parameters appropriately
518	domask_no(mid,j) = domask_no(mid,j) + 1
519	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
520	domask_unit(mid,j,domask_no(mid,j)) = unit
521
522	IF ( j == 1 ) THEN
523	!
524	!-- Check, if variable is already subject to averaging
525	found = .FALSE.
526	DO k = 1, doav_n
527	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
528	ENDDO
529
530	IF ( .NOT. found ) THEN
531	doav_n = doav_n + 1
532	doav(doav_n) = var
533	ENDIF
534	ENDIF
535
536	i = i + 1
537
538	ENDDO ! do_mask(mid,i)
539	ENDDO ! mid
540
541
542	!
543	!-- Determine mask locations for each mask
544	DO mid = 1, masks
545	!
546	!-- Set local masks for each subdomain along all three dimensions
547	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
548	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
549	IF ( .NOT. mask_surface(mid) ) THEN
550	CALL set_mask_locations( 3, dz(1), 'dz', nz, 'nz', nzb, nzt )
551	ELSE
552	!
553	!-- Set vertical mask locations and size in case of terrain-following
554	!-- output
555	count = 0
556	DO WHILE ( mask_k_over_surface(mid, count+1) >= 0 )
557	m = mask_k_over_surface(mid, count+1)
558	IF ( m > nz+1 ) THEN
559	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
560	m,' in mask ',mid,' along dimension ', 3, &
561	' exceeds (nz+1) = ',nz+1
562	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
563	ENDIF
564	count = count + 1
565	mask_k(mid,count) = mask_k_over_surface(mid, count)
566	IF ( count == mask_xyz_dimension ) EXIT
567	ENDDO
568	mask_start_l(mid,3) = 1
569	mask_size(mid,3) = count
570	mask_size_l(mid,3) = count
571	ENDIF
572	!
573	!-- Set global masks along all three dimensions (required by
574	!-- define_netcdf_header).
575	#if defined( __parallel )
576	!
577	!-- PE0 receives partial arrays from all processors of the respective mask
578	!-- and outputs them. Here a barrier has to be set, because otherwise
579	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
580
581	CALL MPI_BARRIER( comm2d, ierr )
582
583	IF ( myid == 0 ) THEN
584	!
585	!-- Local arrays can be relocated directly.
586	mask_i_global(mid,mask_start_l(mid,1): &
587	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
588	mask_i(mid,:mask_size_l(mid,1))
589	mask_j_global(mid,mask_start_l(mid,2): &
590	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
591	mask_j(mid,:mask_size_l(mid,2))
592	mask_k_global(mid,mask_start_l(mid,3): &
593	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
594	mask_k(mid,:mask_size_l(mid,3))
595	!
596	!-- Receive data from all other PEs.
597	DO n = 1, numprocs-1
598	!
599	!-- Receive index limits first, then arrays.
600	!-- Index limits are received in arbitrary order from the PEs.
601	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
602	comm2d, status, ierr )
603	!
604	!-- Not all PEs have data for the mask.
605	IF ( ind(1) /= -9999 ) THEN
606	sender = status(MPI_SOURCE)
607	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
608	MPI_INTEGER, sender, 1, comm2d, status, ierr )
609	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
610	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
611	MPI_INTEGER, sender, 2, comm2d, status, ierr )
612	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
613	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
614	MPI_INTEGER, sender, 3, comm2d, status, ierr )
615	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
616	ENDIF
617	ENDDO
618
619	ELSE
620	!
621	!-- If at least part of the mask resides on the PE, send the index limits
622	!-- for the target array, otherwise send -9999 to PE0.
623	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
624	mask_size_l(mid,3) > 0 ) THEN
625	ind(1) = mask_start_l(mid,1)
626	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
627	ind(3) = mask_start_l(mid,2)
628	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
629	ind(5) = mask_start_l(mid,3)
630	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
631	ELSE
632	ind(1) = -9999; ind(2) = -9999
633	ind(3) = -9999; ind(4) = -9999
634	ind(5) = -9999; ind(6) = -9999
635	ENDIF
636	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
637	!
638	!-- If applicable, send data to PE0.
639	IF ( ind(1) /= -9999 ) THEN
640	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
641	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
642	MPI_INTEGER, 0, 1, comm2d, ierr )
643	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
644	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
645	MPI_INTEGER, 0, 2, comm2d, ierr )
646	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
647	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
648	MPI_INTEGER, 0, 3, comm2d, ierr )
649	ENDIF
650	ENDIF
651	!
652	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
653	!-- so that PE0 may receive wrong data on tag 0.
654	CALL MPI_BARRIER( comm2d, ierr )
655
656	IF ( netcdf_data_format > 4 ) THEN
657
658	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
659	ierr )
660	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
661	ierr )
662	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
663	ierr )
664
665	ENDIF
666
667	#else
668	!
669	!-- Local arrays can be relocated directly.
670	mask_i_global(mid,:) = mask_i(mid,:)
671	mask_j_global(mid,:) = mask_j(mid,:)
672	mask_k_global(mid,:) = mask_k(mid,:)
673	#endif
674	ENDDO ! mid
675
676	DEALLOCATE( tmp_array )
677	!
678	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
679	!-- required for header output on PE 0.
680	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
681
682	CONTAINS
683
684	!------------------------------------------------------------------------------!
685	! Description:
686	! ------------
687	!> Set local mask for each subdomain along 'dim' direction.
688	!------------------------------------------------------------------------------!
689	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
690	lb, ub )
691
692	IMPLICIT NONE
693
694	CHARACTER (LEN=2) :: dxyz_string !<
695	CHARACTER (LEN=2) :: nxyz_string !<
696
697	INTEGER(iwp) :: count !<
698	INTEGER(iwp) :: count_l !<
699	INTEGER(iwp) :: dim !<
700	INTEGER(iwp) :: m !<
701	INTEGER(iwp) :: loop_begin !<
702	INTEGER(iwp) :: loop_end !<
703	INTEGER(iwp) :: loop_stride !<
704	INTEGER(iwp) :: lb !<
705	INTEGER(iwp) :: nxyz !<
706	INTEGER(iwp) :: ub !<
707
708	REAL(wp) :: dxyz !<
709	REAL(wp) :: ddxyz !<
710	REAL(wp) :: tmp1 !<
711	REAL(wp) :: tmp2 !<
712
713	count = 0; count_l = 0
714	ddxyz = 1.0_wp / dxyz
715	tmp1 = 0.0_wp
716	tmp2 = 0.0_wp
717
718	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
719	!
720	!-- use predefined mask_* array
721	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
722	count = count + 1
723	IF ( dim == 1 .OR. dim == 2 ) THEN
724	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
725	IF ( m < 0 ) m = 0 ! avoid negative values
726	ELSEIF ( dim == 3 ) THEN
727	ind_array = &
728	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
729	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
730	ENDIF
731	IF ( m > (nxyz+1) ) THEN
732	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
733	m,' in mask ',mid,' along dimension ',dim, &
734	' exceeds (',nxyz_string,'+1) = ',nxyz+1
735	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
736	ENDIF
737	IF ( ( m >= lb .AND. m <= ub ) .OR. &
738	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
739	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
740	count_l = count_l + 1
741	IF ( dim == 1 ) THEN
742	mask_i(mid,count_l) = m
743	ELSEIF ( dim == 2 ) THEN
744	mask_j(mid,count_l) = m
745	ELSEIF ( dim == 3 ) THEN
746	mask_k(mid,count_l) = m
747	ENDIF
748	ENDIF
749	IF ( count == mask_xyz_dimension ) EXIT
750	ENDDO
751	mask_size(mid,dim) = count
752	mask_size_l(mid,dim) = count_l
753
754	ELSE
755	!
756	!-- use predefined mask_loop_* array, or use the default (all grid points
757	!-- along this direction)
758	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
759	tmp1 = mask_loop(mid,dim,1)
760	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
761	ENDIF
762	IF ( dim == 1 .OR. dim == 2 ) THEN
763	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
764	tmp2 = mask_loop(mid,dim,2)
765	mask_loop(mid,dim,2) = nxyz*dxyz / mask_scale(dim) ! (default)
766	ENDIF
767	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
768	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
769	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
770	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
771	' and/or mask_loop(',mid,',',dim,',2)=', &
772	mask_loop(mid,dim,2),' exceed (', &
773	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
774	(nxyz+1)*dxyz/mask_scale(dim)
775	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
776	ENDIF
777	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
778	* ddxyz - 0.5_wp )
779	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
780	* ddxyz - 0.5_wp )
781	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
782	* ddxyz )
783	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
784	ELSEIF ( dim == 3 ) THEN
785	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
786	tmp2 = mask_loop(mid,dim,2)
787	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
788	ENDIF
789	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
790	> zu(nz+1) / mask_scale(dim) ) THEN
791	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
792	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
793	' and/or mask_loop(',mid,',',dim,',2)=', &
794	mask_loop(mid,dim,2),' exceed zu(nz+1)/mask_scale(',dim, &
795	')=',zu(nz+1)/mask_scale(dim)
796	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
797	ENDIF
798	ind_array = &
799	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
800	loop_begin = &
801	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
802	ind_array = &
803	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
804	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
805	!
806	!-- The following line assumes a constant vertical grid spacing within
807	!-- the vertical mask range; it fails for vertical grid stretching.
808	!-- Maybe revise later. Issue warning but continue execution. ABS(...)
809	!-- within the IF statement is necessary because the default value of
810	!-- dz_stretch_level_start is -9999999.9_wp.
811	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
812
813	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > &
814	ABS( dz_stretch_level_start(1) ) ) THEN
815	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
816	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2), &
817	' exceeds dz_stretch_level=',dz_stretch_level_start(1), &
818	'.&Vertical mask locations will not ', &
819	'match the desired heights within the stretching ', &
820	'region.'
821	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
822	ENDIF
823
824	ENDIF
825	!
826	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
827	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
828	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
829	!
830	!-- The default stride +/-1 (every grid point) applies if
831	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
832	IF ( loop_stride == 0 ) THEN
833	IF ( loop_end >= loop_begin ) THEN
834	loop_stride = 1
835	ELSE
836	loop_stride = -1
837	ENDIF
838	ENDIF
839	DO m = loop_begin, loop_end, loop_stride
840	count = count + 1
841	IF ( ( m >= lb .AND. m <= ub ) .OR. &
842	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
843	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
844	count_l = count_l + 1
845	IF ( dim == 1 ) THEN
846	mask_i(mid,count_l) = m
847	ELSEIF ( dim == 2 ) THEN
848	mask_j(mid,count_l) = m
849	ELSEIF ( dim == 3 ) THEN
850	mask_k(mid,count_l) = m
851	ENDIF
852	ENDIF
853	ENDDO
854	mask_size(mid,dim) = count
855	mask_size_l(mid,dim) = count_l
856
857	ENDIF
858
859	END SUBROUTINE set_mask_locations
860
861	END SUBROUTINE init_masks

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