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source: palm/trunk/SOURCE/init_masks.f90 @ 2249

Last change on this file since 2249 was 2101, checked in by suehring, 8 years ago
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1	!> @file init_masks.f90
2	!------------------------------------------------------------------------------!
3	! This file is part of PALM.
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 1997-2017 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_masks.f90 2101 2017-01-05 16:42:31Z sward $
27	!
28	! 2031 2016-10-21 15:11:58Z knoop
29	! renamed variable rho to rho_ocean
30	!
31	! 2000 2016-08-20 18:09:15Z knoop
32	! Forced header and separation lines into 80 columns
33	!
34	! 1822 2016-04-07 07:49:42Z hoffmann
35	! icloud_scheme replaced by microphysics_*
36	!
37	! 1804 2016-04-05 16:30:18Z maronga
38	! Removed code for parameter file check (__check)
39	!
40	! 1783 2016-03-06 18:36:17Z raasch
41	! netcdf module name changed + related changes
42	!
43	! 1682 2015-10-07 23:56:08Z knoop
44	! Code annotations made doxygen readable
45	!
46	! 1438 2014-07-22 14:14:06Z heinze
47	! +nr, qc, qr
48	!
49	! 1414 2014-05-31 11:19:48Z gronemeier
50	! Bugfix: first and last grid points as they appear in 3D volume data can now
51	! be included to masked data output
52	!
53	! 1353 2014-04-08 15:21:23Z heinze
54	! REAL constants provided with KIND-attribute
55	!
56	! 1324 2014-03-21 09:13:16Z suehring
57	! Bugfix: ONLY statement for module netcdf_control removed
58	!
59	! 1320 2014-03-20 08:40:49Z raasch
60	! ONLY-attribute added to USE-statements,
61	! kind-parameters added to all INTEGER and REAL declaration statements,
62	! kinds are defined in new module kinds,
63	! revision history before 2012 removed,
64	! comment fields (!:) to be used for variable explanations added to
65	! all variable declaration statements
66	!
67	! 1186 2013-06-18 06:22:52Z raasch
68	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
69	! because a zero value does not work in case of ocean runs
70	!
71	! 1036 2012-10-22 13:43:42Z raasch
72	! code put under GPL (PALM 3.9)
73	!
74	! 1032 2012-10-21 13:03:21Z letzel
75	! mask locations determined based on scalar positions
76	!
77	! 1031 2012-10-19 14:35:30Z raasch
78	! netCDF4 without parallel file support implemented
79	!
80	! 996 2012-09-07 10:41:47Z raasch
81	! little reformatting
82	!
83	! 978 2012-08-09 08:28:32Z fricke
84	! +z0h*
85	!
86	! 809 2012-01-30 13:32:58Z maronga
87	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
88	!
89	! 807 2012-01-25 11:53:51Z maronga
90	! New cpp directive "__check" implemented which is used by check_namelist_files
91	!
92	! 410 2009-12-04 17:05:40Z letzel
93	! Initial revision
94	!
95	!
96	! Description:
97	! ------------
98	!> Initialize masked data output
99	!------------------------------------------------------------------------------!
100	SUBROUTINE init_masks
101
102	USE arrays_3d, &
103	ONLY: zu, zw
104
105	USE control_parameters, &
106	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
107	data_output_masks, data_output_masks_user, &
108	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
109	mask, masks, mask_scale, mask_i, &
110	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
111	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
112	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
113	mask_z_loop, max_masks, message_string, mid, &
114	microphysics_seifert, passive_scalar, ocean
115
116	USE grid_variables, &
117	ONLY: dx, dy
118
119	USE indices, &
120	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
121
122	USE kinds
123
124	USE netcdf_interface, &
125	ONLY: domask_unit, netcdf_data_format
126
127	USE particle_attributes, &
128	ONLY: particle_advection
129
130	USE pegrid
131
132	IMPLICIT NONE
133
134	CHARACTER (LEN=6) :: var !<
135	CHARACTER (LEN=7) :: unit !<
136
137	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask !<
138	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask_user !<
139
140	INTEGER(iwp) :: i !<
141	INTEGER(iwp) :: ilen !<
142	INTEGER(iwp) :: ind(6) !<
143	INTEGER(iwp) :: ind_array(1) !<
144	INTEGER(iwp) :: j !<
145	INTEGER(iwp) :: k !<
146	INTEGER(iwp) :: n !<
147	INTEGER(iwp) :: sender !<
148
149	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
150
151	LOGICAL :: found !<
152	!
153	!-- Allocation and initialization
154	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
155
156	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
157	mask_j(max_masks,nyn-nys+2), &
158	mask_k(max_masks,nzt-nzb+2) )
159	!
160	!-- internal mask arrays ("mask,dimension,selection")
161	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
162	mask_loop(max_masks,3,3) )
163
164	!
165	!-- Parallel mask output not yet tested
166	IF ( netcdf_data_format > 4 ) THEN
167	message_string = 'netCDF file formats '// &
168	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
169	'&are currently not supported (not yet tested).'
170	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
171	ENDIF
172
173	!
174	!-- Store data output parameters for masked data output in few shared arrays
175	DO mid = 1, masks
176
177	do_mask (mid,:) = data_output_masks(mid,:)
178	do_mask_user(mid,:) = data_output_masks_user(mid,:)
179	mask (mid,1,:) = mask_x(mid,:)
180	mask (mid,2,:) = mask_y(mid,:)
181	mask (mid,3,:) = mask_z(mid,:)
182
183	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
184	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
185	mask_loop(mid,1,1:2) = -1.0_wp
186	mask_loop(mid,1,3) = 0.0_wp
187	ELSE
188	mask_loop(mid,1,:) = mask_x_loop(mid,:)
189	ENDIF
190	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
191	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
192	mask_loop(mid,2,1:2) = -1.0_wp
193	mask_loop(mid,2,3) = 0.0_wp
194	ELSE
195	mask_loop(mid,2,:) = mask_y_loop(mid,:)
196	ENDIF
197	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
198	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
199	mask_loop(mid,3,1:2) = -1.0_wp
200	mask_loop(mid,3,3) = 0.0_wp
201	ELSE
202	mask_loop(mid,3,:) = mask_z_loop(mid,:)
203	ENDIF
204
205	ENDDO
206
207	mask_i = -1; mask_j = -1; mask_k = -1
208
209	!
210	!-- Global arrays are required by define_netcdf_header.
211	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
212	ALLOCATE( mask_i_global(max_masks,nx+2), &
213	mask_j_global(max_masks,ny+2), &
214	mask_k_global(max_masks,nz+2) )
215	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
216	ENDIF
217
218	!
219	!-- Determine variable names for each mask
220	DO mid = 1, masks
221	!
222	!-- Append user-defined data output variables to the standard data output
223	IF ( do_mask_user(mid,1) /= ' ' ) THEN
224	i = 1
225	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
226	i = i + 1
227	ENDDO
228	j = 1
229	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
230	IF ( i > 100 ) THEN
231	WRITE ( message_string, * ) 'number of output quantitities ', &
232	'given by data_output_mask and data_output_mask_user ', &
233	'exceeds the limit of 100'
234	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
235	ENDIF
236	do_mask(mid,i) = do_mask_user(mid,j)
237	i = i + 1
238	j = j + 1
239	ENDDO
240	ENDIF
241
242	!
243	!-- Check and set steering parameters for mask data output and averaging
244	i = 1
245	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
246	!
247	!-- Check for data averaging
248	ilen = LEN_TRIM( do_mask(mid,i) )
249	j = 0 ! no data averaging
250	IF ( ilen > 3 ) THEN
251	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
252	j = 1 ! data averaging
253	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
254	ENDIF
255	ENDIF
256	var = TRIM( do_mask(mid,i) )
257	!
258	!-- Check for allowed value and set units
259	SELECT CASE ( TRIM( var ) )
260
261	CASE ( 'e' )
262	IF ( constant_diffusion ) THEN
263	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
264	'" requires constant_diffusion = .FALSE.'
265	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
266	ENDIF
267	unit = 'm2/s2'
268
269	CASE ( 'lpt' )
270	IF ( .NOT. cloud_physics ) THEN
271	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
272	'" requires cloud_physics = .TRUE.'
273	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
274	ENDIF
275	unit = 'K'
276
277	CASE ( 'nr' )
278	IF ( .NOT. cloud_physics ) THEN
279	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
280	'" requires cloud_physics = .TRUE.'
281	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
282	ELSEIF ( .NOT. microphysics_seifert ) THEN
283	message_string = 'output of "' // TRIM( var ) // '" requi' // &
284	'res cloud_scheme = seifert_beheng'
285	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
286	ENDIF
287	unit = '1/m3'
288
289	CASE ( 'pc', 'pr' )
290	IF ( .NOT. particle_advection ) THEN
291	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
292	'" requires a "particles_par"-NAMELIST in the ', &
293	'parameter file (PARIN)'
294	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
295	ENDIF
296	IF ( TRIM( var ) == 'pc' ) unit = 'number'
297	IF ( TRIM( var ) == 'pr' ) unit = 'm'
298
299	CASE ( 'q', 'vpt' )
300	IF ( .NOT. humidity ) THEN
301	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
302	'" requires humidity = .TRUE.'
303	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
304	ENDIF
305	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
306	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
307
308	CASE ( 'qc' )
309	IF ( .NOT. cloud_physics ) THEN
310	message_string = 'output of "' // TRIM( var ) // '" requi' // &
311	'res cloud_physics = .TRUE.'
312	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
313	ENDIF
314	unit = 'kg/kg'
315
316	CASE ( 'ql' )
317	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
318	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
319	'" requires cloud_physics = .TRUE. or cloud_droplets', &
320	' = .TRUE.'
321	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
322	ENDIF
323	unit = 'kg/kg'
324
325	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
326	IF ( .NOT. cloud_droplets ) THEN
327	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
328	'" requires cloud_droplets = .TRUE.'
329	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
330	ENDIF
331	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
332	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
333	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
334
335	CASE ( 'qv' )
336	IF ( .NOT. cloud_physics ) THEN
337	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
338	'" requires cloud_physics = .TRUE.'
339	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
340	ENDIF
341	unit = 'kg/kg'
342
343	CASE ( 'qr' )
344	IF ( .NOT. cloud_physics ) THEN
345	message_string = 'output of "' // TRIM( var ) // '" requi' // &
346	'res cloud_physics = .TRUE.'
347	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
348	ELSEIF ( .NOT. microphysics_seifert ) THEN
349	message_string = 'output of "' // TRIM( var ) // '" requi' // &
350	'res cloud_scheme = seifert_beheng'
351	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
352	ENDIF
353	unit = 'kg/kg'
354
355	CASE ( 'rho_ocean' )
356	IF ( .NOT. ocean ) THEN
357	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
358	'" requires ocean = .TRUE.'
359	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
360	ENDIF
361	unit = 'kg/m3'
362
363	CASE ( 's' )
364	IF ( .NOT. passive_scalar ) THEN
365	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
366	'" requires passive_scalar = .TRUE.'
367	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
368	ENDIF
369	unit = 'conc'
370
371	CASE ( 'sa' )
372	IF ( .NOT. ocean ) THEN
373	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
374	'" requires ocean = .TRUE.'
375	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
376	ENDIF
377	unit = 'psu'
378
379	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
380	WRITE ( message_string, * ) 'illegal value for data_',&
381	'output: "', TRIM( var ), '" is only allowed', &
382	'for horizontal cross section'
383	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
384
385	CASE ( 'p', 'pt', 'u', 'v', 'w' )
386	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
387	IF ( TRIM( var ) == 'pt' ) unit = 'K'
388	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
389	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
390	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
391	CONTINUE
392
393	CASE DEFAULT
394	CALL user_check_data_output( var, unit )
395
396	IF ( unit == 'illegal' ) THEN
397	IF ( do_mask_user(mid,1) /= ' ' ) THEN
398	WRITE ( message_string, * ) 'illegal value for data_',&
399	'output or data_output_user: "', &
400	TRIM( do_mask(mid,i) ), '"'
401	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
402	ELSE
403	WRITE ( message_string, * ) 'illegal value for data_',&
404	'output: "', TRIM( do_mask(mid,i) ), '"'
405	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
406	ENDIF
407	ENDIF
408
409	END SELECT
410	!
411	!-- Set the internal steering parameters appropriately
412	domask_no(mid,j) = domask_no(mid,j) + 1
413	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
414	domask_unit(mid,j,domask_no(mid,j)) = unit
415
416	IF ( j == 1 ) THEN
417	!
418	!-- Check, if variable is already subject to averaging
419	found = .FALSE.
420	DO k = 1, doav_n
421	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
422	ENDDO
423
424	IF ( .NOT. found ) THEN
425	doav_n = doav_n + 1
426	doav(doav_n) = var
427	ENDIF
428	ENDIF
429
430	i = i + 1
431
432	ENDDO ! do_mask(mid,i)
433	ENDDO ! mid
434
435
436	!
437	!-- Determine mask locations for each mask
438	DO mid = 1, masks
439	!
440	!-- Set local masks for each subdomain along all three dimensions
441	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
442	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
443	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
444	!
445	!-- Set global masks along all three dimensions (required by
446	!-- define_netcdf_header).
447	#if defined( __parallel )
448	!
449	!-- PE0 receives partial arrays from all processors of the respective mask
450	!-- and outputs them. Here a barrier has to be set, because otherwise
451	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
452
453	CALL MPI_BARRIER( comm2d, ierr )
454
455	IF ( myid == 0 ) THEN
456	!
457	!-- Local arrays can be relocated directly.
458	mask_i_global(mid,mask_start_l(mid,1): &
459	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
460	mask_i(mid,:mask_size_l(mid,1))
461	mask_j_global(mid,mask_start_l(mid,2): &
462	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
463	mask_j(mid,:mask_size_l(mid,2))
464	mask_k_global(mid,mask_start_l(mid,3): &
465	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
466	mask_k(mid,:mask_size_l(mid,3))
467	!
468	!-- Receive data from all other PEs.
469	DO n = 1, numprocs-1
470	!
471	!-- Receive index limits first, then arrays.
472	!-- Index limits are received in arbitrary order from the PEs.
473	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
474	comm2d, status, ierr )
475	!
476	!-- Not all PEs have data for the mask.
477	IF ( ind(1) /= -9999 ) THEN
478	sender = status(MPI_SOURCE)
479	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
480	MPI_INTEGER, sender, 1, comm2d, status, ierr )
481	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
482	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
483	MPI_INTEGER, sender, 2, comm2d, status, ierr )
484	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
485	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
486	MPI_INTEGER, sender, 3, comm2d, status, ierr )
487	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
488	ENDIF
489	ENDDO
490
491	ELSE
492	!
493	!-- If at least part of the mask resides on the PE, send the index limits
494	!-- for the target array, otherwise send -9999 to PE0.
495	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
496	mask_size_l(mid,3) > 0 ) THEN
497	ind(1) = mask_start_l(mid,1)
498	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
499	ind(3) = mask_start_l(mid,2)
500	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
501	ind(5) = mask_start_l(mid,3)
502	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
503	ELSE
504	ind(1) = -9999; ind(2) = -9999
505	ind(3) = -9999; ind(4) = -9999
506	ind(5) = -9999; ind(6) = -9999
507	ENDIF
508	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
509	!
510	!-- If applicable, send data to PE0.
511	IF ( ind(1) /= -9999 ) THEN
512	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
513	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
514	MPI_INTEGER, 0, 1, comm2d, ierr )
515	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
516	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
517	MPI_INTEGER, 0, 2, comm2d, ierr )
518	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
519	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
520	MPI_INTEGER, 0, 3, comm2d, ierr )
521	ENDIF
522	ENDIF
523	!
524	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
525	!-- so that PE0 may receive wrong data on tag 0.
526	CALL MPI_BARRIER( comm2d, ierr )
527
528	IF ( netcdf_data_format > 4 ) THEN
529
530	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
531	ierr )
532	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
533	ierr )
534	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
535	ierr )
536
537	ENDIF
538
539	#else
540	!
541	!-- Local arrays can be relocated directly.
542	mask_i_global(mid,:) = mask_i(mid,:)
543	mask_j_global(mid,:) = mask_j(mid,:)
544	mask_k_global(mid,:) = mask_k(mid,:)
545	#endif
546	ENDDO ! mid
547
548	DEALLOCATE( tmp_array )
549	!
550	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
551	!-- required for header output on PE 0.
552	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
553
554	CONTAINS
555
556	!------------------------------------------------------------------------------!
557	! Description:
558	! ------------
559	!> Set local mask for each subdomain along 'dim' direction.
560	!------------------------------------------------------------------------------!
561	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
562	lb, ub )
563
564	IMPLICIT NONE
565
566	CHARACTER (LEN=2) :: dxyz_string !<
567	CHARACTER (LEN=2) :: nxyz_string !<
568
569	INTEGER(iwp) :: count !<
570	INTEGER(iwp) :: count_l !<
571	INTEGER(iwp) :: dim !<
572	INTEGER(iwp) :: m !<
573	INTEGER(iwp) :: loop_begin !<
574	INTEGER(iwp) :: loop_end !<
575	INTEGER(iwp) :: loop_stride !<
576	INTEGER(iwp) :: lb !<
577	INTEGER(iwp) :: nxyz !<
578	INTEGER(iwp) :: ub !<
579
580	REAL(wp) :: dxyz !<
581	REAL(wp) :: ddxyz !<
582	REAL(wp) :: tmp1 !<
583	REAL(wp) :: tmp2 !<
584
585	count = 0; count_l = 0
586	ddxyz = 1.0_wp / dxyz
587	tmp1 = 0.0_wp
588	tmp2 = 0.0_wp
589
590	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
591	!
592	!-- use predefined mask_* array
593	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
594	count = count + 1
595	IF ( dim == 1 .OR. dim == 2 ) THEN
596	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
597	IF ( m < 0 ) m = 0 ! avoid negative values
598	ELSEIF ( dim == 3 ) THEN
599	ind_array = &
600	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
601	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
602	ENDIF
603	IF ( m > (nxyz+1) ) THEN
604	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
605	m,' in mask ',mid,' along dimension ',dim, &
606	' exceeds (',nxyz_string,'+1) = ',nxyz+1
607	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
608	ENDIF
609	IF ( ( m >= lb .AND. m <= ub ) .OR. &
610	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
611	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
612	count_l = count_l + 1
613	IF ( dim == 1 ) THEN
614	mask_i(mid,count_l) = m
615	ELSEIF ( dim == 2 ) THEN
616	mask_j(mid,count_l) = m
617	ELSEIF ( dim == 3 ) THEN
618	mask_k(mid,count_l) = m
619	ENDIF
620	ENDIF
621	IF ( count == mask_xyz_dimension ) EXIT
622	ENDDO
623	mask_size(mid,dim) = count
624	mask_size_l(mid,dim) = count_l
625
626	ELSE
627	!
628	!-- use predefined mask_loop_* array, or use the default (all grid points
629	!-- along this direction)
630	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
631	tmp1 = mask_loop(mid,dim,1)
632	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
633	ENDIF
634	IF ( dim == 1 .OR. dim == 2 ) THEN
635	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
636	tmp2 = mask_loop(mid,dim,2)
637	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
638	ENDIF
639	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
640	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
641	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
642	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
643	' and/or mask_loop(',mid,',',dim,',2)=', &
644	mask_loop(mid,dim,2),'&exceed (', &
645	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
646	(nxyz+1)*dxyz/mask_scale(dim)
647	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
648	ENDIF
649	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
650	* ddxyz - 0.5_wp )
651	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
652	* ddxyz - 0.5_wp )
653	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
654	* ddxyz )
655	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
656	ELSEIF ( dim == 3 ) THEN
657	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
658	tmp2 = mask_loop(mid,dim,2)
659	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
660	ENDIF
661	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
662	> zu(nz+1) / mask_scale(dim) ) THEN
663	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
664	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
665	' and/or mask_loop(',mid,',',dim,',2)=', &
666	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
667	')=',zu(nz+1)/mask_scale(dim)
668	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
669	ENDIF
670	ind_array = &
671	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
672	loop_begin = &
673	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
674	ind_array = &
675	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
676	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
677	!
678	!-- The following line assumes a constant vertical grid spacing within
679	!-- the vertical mask range; it fails for vertical grid stretching.
680	!-- Maybe revise later. Issue warning but continue execution.
681	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
682
683	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
684	THEN
685	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
686	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
687	' exceeds dz_stretch_level=',dz_stretch_level, &
688	'.&Vertical mask locations will not ', &
689	'match the desired heights&within the stretching ', &
690	'region. Recommendation: use mask instead of mask_loop.'
691	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
692	ENDIF
693
694	ENDIF
695	!
696	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
697	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
698	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
699	!
700	!-- The default stride +/-1 (every grid point) applies if
701	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
702	IF ( loop_stride == 0 ) THEN
703	IF ( loop_end >= loop_begin ) THEN
704	loop_stride = 1
705	ELSE
706	loop_stride = -1
707	ENDIF
708	ENDIF
709	DO m = loop_begin, loop_end, loop_stride
710	count = count + 1
711	IF ( ( m >= lb .AND. m <= ub ) .OR. &
712	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
713	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
714	count_l = count_l + 1
715	IF ( dim == 1 ) THEN
716	mask_i(mid,count_l) = m
717	ELSEIF ( dim == 2 ) THEN
718	mask_j(mid,count_l) = m
719	ELSEIF ( dim == 3 ) THEN
720	mask_k(mid,count_l) = m
721	ENDIF
722	ENDIF
723	ENDDO
724	mask_size(mid,dim) = count
725	mask_size_l(mid,dim) = count_l
726
727	ENDIF
728
729	END SUBROUTINE set_mask_locations
730
731	END SUBROUTINE init_masks

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