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source: palm/trunk/SOURCE/init_masks.f90 @ 4677

Last change on this file since 4677 was 4648, checked in by raasch, 4 years ago
files re-formatted to follow the PALM coding standard
Property svn:keywords set to `Id`
File size: 33.6 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 terms of the GNU General
6	! Public License as published by the Free Software Foundation, either version 3 of the License, or
7	! (at your option) any later version.
8	!
9	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
10	! implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
11	! Public License for more details.
12	!
13	! You should have received a copy of the GNU General Public License along with PALM. If not, see
14	! <http://www.gnu.org/licenses/>.
15	!
16	! Copyright 1997-2020 Leibniz Universitaet Hannover
17	!--------------------------------------------------------------------------------------------------!
18	!
19	! Current revisions:
20	! -----------------
21	!
22	!
23	! Former revisions:
24	! -----------------
25	! $Id: init_masks.f90 4648 2020-08-25 07:52:08Z raasch $
26	! file re-formatted to follow the PALM coding standard
27	!
28	! 4521 2020-05-06 11:39:49Z schwenkel
29	! Rename variable
30	!
31	! 4502 2020-04-17 16:14:16Z schwenkel
32	! Implementation of ice microphysics
33	!
34	! 4444 2020-03-05 15:59:50Z raasch
35	! bugfix: cpp-directives for serial mode added
36	!
37	! 4360 2020-01-07 11:25:50Z suehring
38	! Corrected "Former revisions" section
39	!
40	! 4069 2019-07-01 14:05:51Z Giersch
41	! Masked output running index mid has been introduced as a local variable to avoid runtime error
42	! (Loop variable has been modified) in time_integration
43	!
44	! 3766 2019-02-26 16:23:41Z raasch
45	! unused variables removed
46	!
47	! 3687 2019-01-22 10:42:06Z knoop
48	! unused variables removed
49	!
50	! 3655 2019-01-07 16:51:22Z knoop
51	! Move the control parameter "salsa" from salsa_mod to control_parameters (M. Kurppa)
52	!
53	! 410 2009-12-04 17:05:40Z letzel
54	! Initial revision
55	!
56	!
57	! Description:
58	! ------------
59	!> Initialize masked data output
60	!--------------------------------------------------------------------------------------------------!
61	SUBROUTINE init_masks
62
63	USE arrays_3d, &
64	ONLY: zu, zw
65
66	USE bulk_cloud_model_mod, &
67	ONLY: bulk_cloud_model, microphysics_ice_phase, microphysics_morrison, &
68	microphysics_seifert
69
70
71	USE control_parameters, &
72	ONLY: constant_diffusion, cloud_droplets, data_output_masks, data_output_masks_user, doav,&
73	doav_n, domask, domask_no, dz, dz_stretch_level_start, humidity, mask, masks, &
74	mask_scale, mask_i, mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
75	mask_k_over_surface, mask_loop, mask_size, mask_size_l, mask_start_l, mask_surface, &
76	mask_x, mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, mask_z_loop, &
77	max_masks, message_string, passive_scalar, ocean_mode, varnamelength
78
79	USE grid_variables, &
80	ONLY: dx, dy
81
82	USE indices, &
83	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
84
85	USE kinds
86
87	USE module_interface, &
88	ONLY: module_interface_init_masks
89
90	USE netcdf_interface, &
91	ONLY: domask_unit, netcdf_data_format
92
93	USE particle_attributes, &
94	ONLY: particle_advection
95
96	USE pegrid
97
98	IMPLICIT NONE
99
100	CHARACTER (LEN=varnamelength) :: var !< contains variable name
101	CHARACTER (LEN=7) :: unit !< contains unit of variable
102
103	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !< list of output variables
104	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !< list of user-specified output variables
105
106	INTEGER(iwp) :: count !< counting masking indices along a dimension
107	INTEGER(iwp) :: i !< loop index
108	INTEGER(iwp) :: ilen !< length of string saved in 'do_mask'
109	INTEGER(iwp) :: ind_array(1) !< array index
110	INTEGER(iwp) :: j !< loop index
111	INTEGER(iwp) :: k !< loop index
112	INTEGER(iwp) :: m !< mask index
113	INTEGER(iwp) :: mid !< masked output running index
114	#if defined( __parallel )
115	INTEGER(iwp) :: ind(6) !< index limits (lower/upper bounds) of output array
116	INTEGER(iwp) :: n !< loop index
117	INTEGER(iwp) :: sender !< PE id of sending PE
118	#endif
119
120	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !< temporary 1D array
121
122	LOGICAL :: found !< true if variable is found
123
124	!
125	!-- Initial values are explicitly set here due to a bug in the Cray compiler in case of assignments
126	!-- of initial values in declaration statements for arrays with more than 9999 elements
127	!-- (appears with -eD only)
128	domask = ' '
129
130	!
131	!-- Allocation and initialization
132	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
133
134	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
135	mask_j(max_masks,nyn-nys+2), &
136	mask_k(max_masks,nzt-nzb+2) )
137	!
138	!-- internal mask arrays ("mask,dimension,selection")
139	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), mask_loop(max_masks,3,3) )
140
141	!
142	!-- Parallel mask output not yet supported. In check_parameters data format is restricted and is
143	!-- switched back to non-parallel output. Therefore the following error can not occur at the moment.
144	IF ( netcdf_data_format > 4 ) THEN
145	message_string = 'netCDF file formats '// &
146	'5 and 6 (with parallel I/O support)'// &
147	' are currently not supported.'
148	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
149	ENDIF
150
151	!
152	!-- Store data output parameters for masked data output in few shared arrays
153	DO mid = 1, masks
154
155	do_mask (mid,:) = data_output_masks(mid,:)
156	do_mask_user(mid,:) = data_output_masks_user(mid,:)
157	mask (mid,1,:) = mask_x(mid,:)
158	mask (mid,2,:) = mask_y(mid,:)
159	mask (mid,3,:) = mask_z(mid,:)
160	!
161	!-- Flag a mask as terrain following
162	IF ( mask_k_over_surface(mid,1) /= -1_iwp ) THEN
163	mask_surface(mid) = .TRUE.
164	ENDIF
165
166	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp .AND. &
167	mask_x_loop(mid,3) == -1.0_wp ) THEN
168	mask_loop(mid,1,1:2) = -1.0_wp
169	mask_loop(mid,1,3) = 0.0_wp
170	ELSE
171	mask_loop(mid,1,:) = mask_x_loop(mid,:)
172	ENDIF
173	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp .AND. &
174	mask_y_loop(mid,3) == -1.0_wp ) THEN
175	mask_loop(mid,2,1:2) = -1.0_wp
176	mask_loop(mid,2,3) = 0.0_wp
177	ELSE
178	mask_loop(mid,2,:) = mask_y_loop(mid,:)
179	ENDIF
180	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp .AND. &
181	mask_z_loop(mid,3) == -1.0_wp ) THEN
182	mask_loop(mid,3,1:2) = -1.0_wp
183	mask_loop(mid,3,3) = 0.0_wp
184	ELSE
185	mask_loop(mid,3,:) = mask_z_loop(mid,:)
186	ENDIF
187
188	ENDDO
189
190	mask_i = -1; mask_j = -1; mask_k = -1
191
192	!
193	!-- Global arrays are required by define_netcdf_header.
194	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
195	ALLOCATE( mask_i_global(max_masks,nx+2), &
196	mask_j_global(max_masks,ny+2), &
197	mask_k_global(max_masks,nz+2) )
198	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
199	ENDIF
200
201	!
202	!-- Determine variable names for each mask
203	DO mid = 1, masks
204	!
205	!-- Append user-defined data output variables to the standard data output
206	IF ( do_mask_user(mid,1) /= ' ' ) THEN
207	i = 1
208	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
209	i = i + 1
210	ENDDO
211	j = 1
212	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
213	IF ( i > 100 ) THEN
214	WRITE ( message_string, * ) 'number of output quantitities ', &
215	'given by data_output_mask and data_output_mask_user ',&
216	'exceeds the limit of 100'
217	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
218	ENDIF
219	do_mask(mid,i) = do_mask_user(mid,j)
220	i = i + 1
221	j = j + 1
222	ENDDO
223	ENDIF
224
225	!
226	!-- Check and set steering parameters for mask data output and averaging
227	i = 1
228	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
229	!
230	!-- Check for data averaging
231	ilen = LEN_TRIM( do_mask(mid,i) )
232	j = 0 ! no data averaging
233	IF ( ilen > 3 ) THEN
234	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
235	j = 1 ! data averaging
236	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
237	ENDIF
238	ENDIF
239	var = TRIM( do_mask(mid,i) )
240	!
241	!-- Check for allowed value and set units
242	SELECT CASE ( TRIM( var ) )
243
244	CASE ( 'e' )
245	IF ( constant_diffusion ) THEN
246	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
247	'" requires constant_diffusion = .FALSE.'
248	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
249	ENDIF
250	unit = 'm2/s2'
251
252	CASE ( 'thetal' )
253	IF ( .NOT. bulk_cloud_model ) THEN
254	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
255	'" requires bulk_cloud_model = .TRUE.'
256	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
257	ENDIF
258	unit = 'K'
259
260	CASE ( 'nc' )
261	IF ( .NOT. bulk_cloud_model ) THEN
262	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
263	'" requires bulk_cloud_model = .TRUE.'
264	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
265	ELSEIF ( .NOT. microphysics_morrison ) THEN
266	message_string = 'output of "' // TRIM( var ) // '" ' // 'requires = morrison'
267	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
268	ENDIF
269	unit = '1/m3'
270
271	CASE ( 'ni' )
272	IF ( .NOT. bulk_cloud_model ) THEN
273	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
274	'" requires bulk_cloud_model = .TRUE.'
275	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
276	ELSEIF ( .NOT. microphysics_ice_phase ) THEN
277	message_string = 'output of "' // TRIM( var ) // '" ' // &
278	'requires microphysics_ice_phase = .TRUE.'
279	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
280	ENDIF
281	unit = '1/m3'
282
283	CASE ( 'nr' )
284	IF ( .NOT. bulk_cloud_model ) THEN
285	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
286	'" requires bulk_cloud_model = .TRUE.'
287	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
288	ELSEIF ( .NOT. microphysics_seifert ) THEN
289	message_string = 'output of "' // TRIM( var ) // '"' // &
290	'requires cloud_scheme = seifert_beheng'
291	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
292	ENDIF
293	unit = '1/m3'
294
295	CASE ( 'pc', 'pr' )
296	IF ( .NOT. particle_advection ) THEN
297	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
298	'" requires a "particles_par"-NAMELIST in the ', &
299	'parameter file (PARIN)'
300	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
301	ENDIF
302	IF ( TRIM( var ) == 'pc' ) unit = 'number'
303	IF ( TRIM( var ) == 'pr' ) unit = 'm'
304
305	CASE ( 'q', 'thetav' )
306	IF ( .NOT. humidity ) THEN
307	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
308	'" requires humidity = .TRUE.'
309	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
310	ENDIF
311	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
312	IF ( TRIM( var ) == 'thetav' ) unit = 'K'
313
314	CASE ( 'qc' )
315	IF ( .NOT. bulk_cloud_model ) THEN
316	message_string = 'output of "' // TRIM( var ) // '"' // &
317	'requires bulk_cloud_model = .TRUE.'
318	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
319	ENDIF
320	unit = 'kg/kg'
321
322	CASE ( 'ql' )
323	IF ( .NOT. ( bulk_cloud_model .OR. cloud_droplets ) ) THEN
324	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
325	'" requires bulk_cloud_model = .TRUE. or ', &
326	'cloud_droplets = .TRUE.'
327	CALL message( 'init_masks', 'PA0106', 1, 2, 0, 6, 0 )
328	ENDIF
329	unit = 'kg/kg'
330
331	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
332	IF ( .NOT. cloud_droplets ) THEN
333	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
334	'" requires cloud_droplets = .TRUE.'
335	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
336	ENDIF
337	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
338	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
339	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
340
341	CASE ( 'qv' )
342	IF ( .NOT. bulk_cloud_model ) THEN
343	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
344	' " requires bulk_cloud_model = .TRUE.'
345	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
346	ENDIF
347	unit = 'kg/kg'
348
349	CASE ( 'qi' )
350	IF ( .NOT. bulk_cloud_model ) THEN
351	message_string = 'output of "' // TRIM( var ) // '" ' // &
352	'requires bulk_cloud_model = .TRUE.'
353	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
354	ELSEIF ( .NOT. microphysics_ice_phase ) THEN
355	message_string = 'output of "' // TRIM( var ) // '" ' // &
356	'requires microphysics_ice_phase = .TRUE.'
357	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
358	ENDIF
359	unit = 'kg/kg'
360
361	CASE ( 'qr' )
362	IF ( .NOT. bulk_cloud_model ) THEN
363	message_string = 'output of "' // TRIM( var ) // '" ' // &
364	'requires bulk_cloud_model = .TRUE.'
365	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
366	ELSEIF ( .NOT. microphysics_seifert ) THEN
367	message_string = 'output of "' // TRIM( var ) // '" ' // &
368	'requires cloud_scheme = seifert_beheng'
369	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
370	ENDIF
371	unit = 'kg/kg'
372
373	CASE ( 'rho_sea_water' )
374	IF ( .NOT. ocean_mode ) THEN
375	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
376	'" requires ocean mode'
377	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
378	ENDIF
379	unit = 'kg/m3'
380
381	CASE ( 's' )
382	IF ( .NOT. passive_scalar ) THEN
383	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
384	'" requires passive_scalar = .TRUE.'
385	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
386	ENDIF
387	unit = 'conc'
388
389	CASE ( 'sa' )
390	IF ( .NOT. ocean_mode ) THEN
391	WRITE ( message_string, * ) 'output of "', TRIM( var ), '" requires ocean mode'
392	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
393	ENDIF
394	unit = 'psu'
395
396	CASE ( 'us', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
397	WRITE ( message_string, * ) 'illegal value for data_', 'output: "', TRIM( var ), &
398	'" is only allowed', 'for horizontal cross section'
399	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
400
401	CASE ( 'p', 'theta', 'u', 'v', 'w' )
402	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
403	IF ( TRIM( var ) == 'theta' ) unit = 'K'
404	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
405	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
406	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
407	CONTINUE
408
409	CASE DEFAULT
410	!
411	!-- Allocate arrays for other modules
412	CALL module_interface_init_masks( var, unit )
413
414	IF ( unit == 'illegal' ) THEN
415	IF ( do_mask_user(mid,1) /= ' ' ) THEN
416	WRITE ( message_string, * ) 'illegal value for data_', &
417	'output_masks or data_output_masks_user: "', &
418	TRIM( do_mask(mid,i) ), '"'
419	CALL message( 'init_masks', 'PA0018', 1, 2, 0, 6, 0 )
420	ELSE
421	WRITE ( message_string, * ) 'illegal value for data_', &
422	' output_masks : "', TRIM( do_mask(mid,i) ), '"'
423	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
424	ENDIF
425	ENDIF
426
427	END SELECT
428	!
429	!-- Set the internal steering parameters appropriately
430	domask_no(mid,j) = domask_no(mid,j) + 1
431	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
432	domask_unit(mid,j,domask_no(mid,j)) = unit
433
434	IF ( j == 1 ) THEN
435	!
436	!-- Check, if variable is already subject to averaging
437	found = .FALSE.
438	DO k = 1, doav_n
439	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
440	ENDDO
441
442	IF ( .NOT. found ) THEN
443	doav_n = doav_n + 1
444	doav(doav_n) = var
445	ENDIF
446	ENDIF
447
448	i = i + 1
449
450	ENDDO ! do_mask(mid,i)
451	ENDDO ! mid
452
453
454	!
455	!-- Determine mask locations for each mask
456	DO mid = 1, masks
457	!
458	!-- Set local masks for each subdomain along all three dimensions
459	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
460	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
461	IF ( .NOT. mask_surface(mid) ) THEN
462	CALL set_mask_locations( 3, dz(1), 'dz', nz, 'nz', nzb, nzt )
463	ELSE
464	!
465	!-- Set vertical mask locations and size in case of terrain-following output
466	count = 0
467	DO WHILE ( mask_k_over_surface(mid, count+1) >= 0 )
468	m = mask_k_over_surface(mid, count+1)
469	IF ( m > nz+1 ) THEN
470	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) m, ' in mask ', mid, &
471	' along dimension ', 3, &
472	' exceeds (nz+1) = ', nz+1
473	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
474	ENDIF
475	count = count + 1
476	mask_k(mid,count) = mask_k_over_surface(mid, count)
477	IF ( count == mask_xyz_dimension ) EXIT
478	ENDDO
479	mask_start_l(mid,3) = 1
480	mask_size(mid,3) = count
481	mask_size_l(mid,3) = count
482	ENDIF
483	!
484	!-- Set global masks along all three dimensions (required by define_netcdf_header).
485	#if defined( __parallel )
486	!
487	!-- PE0 receives partial arrays from all processors of the respective mask and outputs them. Here
488	!-- a barrier has to be set, because otherwise "-MPI- FATAL: Remote protocol queue full" may
489	!-- occur.
490
491	CALL MPI_BARRIER( comm2d, ierr )
492
493	IF ( myid == 0 ) THEN
494	!
495	!-- Local arrays can be relocated directly.
496	mask_i_global(mid,mask_start_l(mid,1): &
497	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
498	mask_i(mid,:mask_size_l(mid,1))
499	mask_j_global(mid,mask_start_l(mid,2): &
500	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
501	mask_j(mid,:mask_size_l(mid,2))
502	mask_k_global(mid,mask_start_l(mid,3): &
503	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
504	mask_k(mid,:mask_size_l(mid,3))
505	!
506	!-- Receive data from all other PEs.
507	DO n = 1, numprocs-1
508	!
509	!-- Receive index limits first, then arrays.
510	!-- Index limits are received in arbitrary order from the PEs.
511	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, comm2d, status, ierr )
512	!
513	!-- Not all PEs have data for the mask.
514	IF ( ind(1) /= -9999 ) THEN
515	sender = status(MPI_SOURCE)
516	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, MPI_INTEGER, sender, 1, comm2d, &
517	status, ierr )
518	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
519	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, MPI_INTEGER, sender, 2, comm2d, &
520	status, ierr )
521	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
522	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, MPI_INTEGER, sender, 3, comm2d, &
523	status, ierr )
524	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
525	ENDIF
526	ENDDO
527
528	ELSE
529	!
530	!-- If at least part of the mask resides on the PE, send the index limits for the target
531	!-- array, otherwise send -9999 to PE0.
532	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
533	mask_size_l(mid,3) > 0 ) THEN
534	ind(1) = mask_start_l(mid,1)
535	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
536	ind(3) = mask_start_l(mid,2)
537	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
538	ind(5) = mask_start_l(mid,3)
539	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
540	ELSE
541	ind(1) = -9999; ind(2) = -9999
542	ind(3) = -9999; ind(4) = -9999
543	ind(5) = -9999; ind(6) = -9999
544	ENDIF
545	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
546	!
547	!-- If applicable, send data to PE0.
548	IF ( ind(1) /= -9999 ) THEN
549	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
550	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), MPI_INTEGER, 0, 1, comm2d, ierr )
551	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
552	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), MPI_INTEGER, 0, 2, comm2d, ierr )
553	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
554	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), MPI_INTEGER, 0, 3, comm2d, ierr )
555	ENDIF
556	ENDIF
557	!
558	!-- A barrier has to be set, because otherwise some PEs may proceed too fast so that PE0 may
559	!-- receive wrong data on tag 0.
560	CALL MPI_BARRIER( comm2d, ierr )
561
562	IF ( netcdf_data_format > 4 ) THEN
563
564	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, ierr )
565	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, ierr )
566	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, ierr )
567
568	ENDIF
569
570	#else
571	!
572	!-- Local arrays can be relocated directly.
573	mask_i_global(mid,:) = mask_i(mid,:)
574	mask_j_global(mid,:) = mask_j(mid,:)
575	mask_k_global(mid,:) = mask_k(mid,:)
576	#endif
577	ENDDO ! mid
578
579	DEALLOCATE( tmp_array )
580	!
581	!-- Internal mask arrays cannot be deallocated on PE 0 because they are required for header output
582	!-- on PE 0.
583	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
584
585	CONTAINS
586
587	!--------------------------------------------------------------------------------------------------!
588	! Description:
589	! ------------
590	!> Set local mask for each subdomain along 'dim' direction.
591	!--------------------------------------------------------------------------------------------------!
592	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, lb, ub )
593
594	IMPLICIT NONE
595
596	CHARACTER (LEN=2) :: dxyz_string !<
597	CHARACTER (LEN=2) :: nxyz_string !<
598
599	INTEGER(iwp) :: count !<
600	INTEGER(iwp) :: count_l !<
601	INTEGER(iwp) :: dim !<
602	INTEGER(iwp) :: m !<
603	INTEGER(iwp) :: loop_begin !<
604	INTEGER(iwp) :: loop_end !<
605	INTEGER(iwp) :: loop_stride !<
606	INTEGER(iwp) :: lb !<
607	INTEGER(iwp) :: nxyz !<
608	INTEGER(iwp) :: ub !<
609
610	REAL(wp) :: dxyz !<
611	REAL(wp) :: ddxyz !<
612	REAL(wp) :: tmp1 !<
613	REAL(wp) :: tmp2 !<
614
615	count = 0; count_l = 0
616	ddxyz = 1.0_wp / dxyz
617	tmp1 = 0.0_wp
618	tmp2 = 0.0_wp
619
620	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
621	!
622	!-- Use predefined mask_* array
623	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
624	count = count + 1
625	IF ( dim == 1 .OR. dim == 2 ) THEN
626	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
627	IF ( m < 0 ) m = 0 ! avoid negative values
628	ELSEIF ( dim == 3 ) THEN
629	ind_array = &
630	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
631	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
632	ENDIF
633	IF ( m > (nxyz+1) ) THEN
634	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) m, ' in mask ', mid, &
635	' along dimension ' ,dim, &
636	' exceeds (' ,nxyz_string, &
637	'+1) = ', nxyz+1
638	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
639	ENDIF
640	IF ( ( m >= lb .AND. m <= ub ) .OR. ( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
641	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
642	count_l = count_l + 1
643	IF ( dim == 1 ) THEN
644	mask_i(mid,count_l) = m
645	ELSEIF ( dim == 2 ) THEN
646	mask_j(mid,count_l) = m
647	ELSEIF ( dim == 3 ) THEN
648	mask_k(mid,count_l) = m
649	ENDIF
650	ENDIF
651	IF ( count == mask_xyz_dimension ) EXIT
652	ENDDO
653	mask_size(mid,dim) = count
654	mask_size_l(mid,dim) = count_l
655
656	ELSE
657	!
658	!-- Use predefined mask_loop_* array, or use the default (all grid points along this
659	!-- direction)
660	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
661	tmp1 = mask_loop(mid,dim,1)
662	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
663	ENDIF
664	IF ( dim == 1 .OR. dim == 2 ) THEN
665	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
666	tmp2 = mask_loop(mid,dim,2)
667	mask_loop(mid,dim,2) = nxyz*dxyz / mask_scale(dim) ! (default)
668	ENDIF
669	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
670	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
671	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
672	'mask_loop(', mid, ',', dim, ',1)=', mask_loop(mid,dim,1), &
673	' and/or mask_loop(', mid, ',', dim, ',2)=', mask_loop(mid,dim,2), &
674	' exceed (', nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
675	(nxyz+1)*dxyz/mask_scale(dim)
676	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
677	ENDIF
678	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) * ddxyz - 0.5_wp )
679	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) * ddxyz - 0.5_wp )
680	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
681	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
682	ELSEIF ( dim == 3 ) THEN
683	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
684	tmp2 = mask_loop(mid,dim,2)
685	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
686	ENDIF
687	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) > zu(nz+1) / mask_scale(dim) ) THEN
688	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
689	'mask_loop(', mid, ',', dim, ',1)=', mask_loop(mid,dim,1), &
690	' and/or mask_loop(', mid, ',', dim, ',2)=', mask_loop(mid,dim,2), &
691	' exceed zu(nz+1)/mask_scale(', dim, ')=',zu(nz+1)/mask_scale(dim)
692	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
693	ENDIF
694	ind_array = MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
695	loop_begin = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
696	ind_array = MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
697	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
698	!
699	!-- The following line assumes a constant vertical grid spacing within the vertical mask
700	!-- range; it fails for vertical grid stretching.
701	!-- Maybe revise later. Issue warning but continue execution. ABS(...) within the IF
702	!-- statement is necessary because the default value of dz_stretch_level_start is
703	!-- -9999999.9_wp.
704	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
705
706	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > ABS( dz_stretch_level_start(1) ) ) THEN
707	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
708	'mask_loop(', mid, ',', dim, ',2)=', mask_loop(mid,dim,2), &
709	' exceeds dz_stretch_level=', dz_stretch_level_start(1), &
710	'.&Vertical mask locations will not ', &
711	'match the desired heights within the stretching ', 'region.'
712	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
713	ENDIF
714
715	ENDIF
716	!
717	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
718	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
719	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
720	!
721	!-- The default stride +/-1 (every grid point) applies if mask_loop(mid,dim,3) is not
722	!-- specified (its default is zero).
723	IF ( loop_stride == 0 ) THEN
724	IF ( loop_end >= loop_begin ) THEN
725	loop_stride = 1
726	ELSE
727	loop_stride = -1
728	ENDIF
729	ENDIF
730	DO m = loop_begin, loop_end, loop_stride
731	count = count + 1
732	IF ( ( m >= lb .AND. m <= ub ) .OR. ( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
733	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
734	count_l = count_l + 1
735	IF ( dim == 1 ) THEN
736	mask_i(mid,count_l) = m
737	ELSEIF ( dim == 2 ) THEN
738	mask_j(mid,count_l) = m
739	ELSEIF ( dim == 3 ) THEN
740	mask_k(mid,count_l) = m
741	ENDIF
742	ENDIF
743	ENDDO
744	mask_size(mid,dim) = count
745	mask_size_l(mid,dim) = count_l
746
747	ENDIF
748
749	END SUBROUTINE set_mask_locations
750
751	END SUBROUTINE init_masks

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