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source: palm/trunk/SOURCE/init_masks.f90 @ 1598

Last change on this file since 1598 was 1439, checked in by heinze, 10 years ago
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1	SUBROUTINE init_masks
2
3	!--------------------------------------------------------------------------------!
4	! This file is part of PALM.
5	!
6	! PALM is free software: you can redistribute it and/or modify it under the terms
7	! of the GNU General Public License as published by the Free Software Foundation,
8	! either version 3 of the License, or (at your option) any later 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 1997-2014 Leibniz Universitaet Hannover
18	!--------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_masks.f90 1439 2014-07-22 14:16:14Z raasch $
27	!
28	! 1438 2014-07-22 14:14:06Z heinze
29	! +nr, qc, qr
30	!
31	! 1414 2014-05-31 11:19:48Z gronemeier
32	! Bugfix: first and last grid points as they appear in 3D volume data can now
33	! be included to masked data output
34	!
35	! 1353 2014-04-08 15:21:23Z heinze
36	! REAL constants provided with KIND-attribute
37	!
38	! 1324 2014-03-21 09:13:16Z suehring
39	! Bugfix: ONLY statement for module netcdf_control removed
40	!
41	! 1320 2014-03-20 08:40:49Z raasch
42	! ONLY-attribute added to USE-statements,
43	! kind-parameters added to all INTEGER and REAL declaration statements,
44	! kinds are defined in new module kinds,
45	! revision history before 2012 removed,
46	! comment fields (!:) to be used for variable explanations added to
47	! all variable declaration statements
48	!
49	! 1186 2013-06-18 06:22:52Z raasch
50	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
51	! because a zero value does not work in case of ocean runs
52	!
53	! 1036 2012-10-22 13:43:42Z raasch
54	! code put under GPL (PALM 3.9)
55	!
56	! 1032 2012-10-21 13:03:21Z letzel
57	! mask locations determined based on scalar positions
58	!
59	! 1031 2012-10-19 14:35:30Z raasch
60	! netCDF4 without parallel file support implemented
61	!
62	! 996 2012-09-07 10:41:47Z raasch
63	! little reformatting
64	!
65	! 978 2012-08-09 08:28:32Z fricke
66	! +z0h*
67	!
68	! 809 2012-01-30 13:32:58Z maronga
69	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
70	!
71	! 807 2012-01-25 11:53:51Z maronga
72	! New cpp directive "__check" implemented which is used by check_namelist_files
73	!
74	! 410 2009-12-04 17:05:40Z letzel
75	! Initial revision
76	!
77	!
78	! Description:
79	! ------------
80	! Initialize masked data output
81	!------------------------------------------------------------------------------!
82
83	USE arrays_3d, &
84	ONLY: zu, zw
85
86	USE control_parameters, &
87	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
88	data_output_masks, data_output_masks_user, &
89	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
90	icloud_scheme, mask, masks, mask_scale, mask_i, &
91	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
92	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
93	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
94	mask_z_loop, max_masks, message_string, mid, &
95	netcdf_data_format, passive_scalar, precipitation, ocean
96
97	USE grid_variables, &
98	ONLY: dx, dy
99
100	USE indices, &
101	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
102
103	USE kinds
104
105	USE netcdf_control
106
107	USE particle_attributes, &
108	ONLY: particle_advection
109
110	USE pegrid
111
112	IMPLICIT NONE
113
114	CHARACTER (LEN=6) :: var !:
115	CHARACTER (LEN=7) :: unit !:
116
117	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask !:
118	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask_user !:
119
120	INTEGER(iwp) :: i !:
121	INTEGER(iwp) :: ilen !:
122	INTEGER(iwp) :: ind(6) !:
123	INTEGER(iwp) :: ind_array(1) !:
124	INTEGER(iwp) :: j !:
125	INTEGER(iwp) :: k !:
126	INTEGER(iwp) :: n !:
127	INTEGER(iwp) :: sender !:
128
129	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !:
130
131	LOGICAL :: found !:
132	!
133	!-- Allocation and initialization
134	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
135
136	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
137	mask_j(max_masks,nyn-nys+2), &
138	mask_k(max_masks,nzt-nzb+2) )
139	!
140	!-- internal mask arrays ("mask,dimension,selection")
141	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
142	mask_loop(max_masks,3,3) )
143
144	!
145	!-- Parallel mask output not yet tested
146	IF ( netcdf_data_format > 4 ) THEN
147	message_string = 'netCDF file formats '// &
148	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
149	'&are currently not supported (not yet tested).'
150	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
151	ENDIF
152
153	!
154	!-- Store data output parameters for masked data output in few shared arrays
155	DO mid = 1, masks
156
157	do_mask (mid,:) = data_output_masks(mid,:)
158	do_mask_user(mid,:) = data_output_masks_user(mid,:)
159	mask (mid,1,:) = mask_x(mid,:)
160	mask (mid,2,:) = mask_y(mid,:)
161	mask (mid,3,:) = mask_z(mid,:)
162
163	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
164	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
165	mask_loop(mid,1,1:2) = -1.0_wp
166	mask_loop(mid,1,3) = 0.0_wp
167	ELSE
168	mask_loop(mid,1,:) = mask_x_loop(mid,:)
169	ENDIF
170	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
171	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
172	mask_loop(mid,2,1:2) = -1.0_wp
173	mask_loop(mid,2,3) = 0.0_wp
174	ELSE
175	mask_loop(mid,2,:) = mask_y_loop(mid,:)
176	ENDIF
177	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
178	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
179	mask_loop(mid,3,1:2) = -1.0_wp
180	mask_loop(mid,3,3) = 0.0_wp
181	ELSE
182	mask_loop(mid,3,:) = mask_z_loop(mid,:)
183	ENDIF
184
185	ENDDO
186
187	mask_i = -1; mask_j = -1; mask_k = -1
188
189	!
190	!-- Global arrays are required by define_netcdf_header.
191	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
192	ALLOCATE( mask_i_global(max_masks,nx+2), &
193	mask_j_global(max_masks,ny+2), &
194	mask_k_global(max_masks,nz+2) )
195	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
196	ENDIF
197
198	!
199	!-- Determine variable names for each mask
200	DO mid = 1, masks
201	!
202	!-- Append user-defined data output variables to the standard data output
203	IF ( do_mask_user(mid,1) /= ' ' ) THEN
204	i = 1
205	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
206	i = i + 1
207	ENDDO
208	j = 1
209	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
210	IF ( i > 100 ) THEN
211	WRITE ( message_string, * ) 'number of output quantitities ', &
212	'given by data_output_mask and data_output_mask_user ', &
213	'exceeds the limit of 100'
214	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
215	ENDIF
216	do_mask(mid,i) = do_mask_user(mid,j)
217	i = i + 1
218	j = j + 1
219	ENDDO
220	ENDIF
221
222	!
223	!-- Check and set steering parameters for mask data output and averaging
224	i = 1
225	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
226	!
227	!-- Check for data averaging
228	ilen = LEN_TRIM( do_mask(mid,i) )
229	j = 0 ! no data averaging
230	IF ( ilen > 3 ) THEN
231	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
232	j = 1 ! data averaging
233	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
234	ENDIF
235	ENDIF
236	var = TRIM( do_mask(mid,i) )
237	!
238	!-- Check for allowed value and set units
239	SELECT CASE ( TRIM( var ) )
240
241	CASE ( 'e' )
242	IF ( constant_diffusion ) THEN
243	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
244	'" requires constant_diffusion = .FALSE.'
245	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
246	ENDIF
247	unit = 'm2/s2'
248
249	CASE ( 'lpt' )
250	IF ( .NOT. cloud_physics ) THEN
251	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
252	'" requires cloud_physics = .TRUE.'
253	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
254	ENDIF
255	unit = 'K'
256
257	CASE ( 'nr' )
258	IF ( .NOT. cloud_physics ) THEN
259	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
260	'" requires cloud_physics = .TRUE.'
261	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
262	ELSEIF ( icloud_scheme /= 0 ) THEN
263	message_string = 'output of "' // TRIM( var ) // '" requi' // &
264	'res cloud_scheme = seifert_beheng'
265	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
266	ELSEIF ( .NOT. precipitation ) THEN
267	message_string = 'output of "' // TRIM( var ) // '" requi' // &
268	'res precipitation = .TRUE.'
269	CALL message( 'check_parameters', 'PA0112', 1, 2, 0, 6, 0 )
270	ENDIF
271	unit = '1/m3'
272
273	CASE ( 'pc', 'pr' )
274	IF ( .NOT. particle_advection ) THEN
275	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
276	'" requires a "particles_par"-NAMELIST in the ', &
277	'parameter file (PARIN)'
278	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
279	ENDIF
280	IF ( TRIM( var ) == 'pc' ) unit = 'number'
281	IF ( TRIM( var ) == 'pr' ) unit = 'm'
282
283	CASE ( 'q', 'vpt' )
284	IF ( .NOT. humidity ) THEN
285	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
286	'" requires humidity = .TRUE.'
287	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
288	ENDIF
289	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
290	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
291
292	CASE ( 'qc' )
293	IF ( .NOT. cloud_physics ) THEN
294	message_string = 'output of "' // TRIM( var ) // '" requi' // &
295	'res cloud_physics = .TRUE.'
296	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
297	ELSEIF ( icloud_scheme /= 0 ) THEN
298	message_string = 'output of "' // TRIM( var ) // '" requi' // &
299	'res cloud_scheme = seifert_beheng'
300	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
301	ENDIF
302	unit = 'kg/kg'
303
304	CASE ( 'ql' )
305	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
306	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
307	'" requires cloud_physics = .TRUE. or cloud_droplets', &
308	' = .TRUE.'
309	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
310	ENDIF
311	unit = 'kg/kg'
312
313	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
314	IF ( .NOT. cloud_droplets ) THEN
315	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
316	'" requires cloud_droplets = .TRUE.'
317	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
318	ENDIF
319	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
320	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
321	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
322
323	CASE ( 'qv' )
324	IF ( .NOT. cloud_physics ) THEN
325	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
326	'" requires cloud_physics = .TRUE.'
327	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
328	ENDIF
329	unit = 'kg/kg'
330
331	CASE ( 'qr' )
332	IF ( .NOT. cloud_physics ) THEN
333	message_string = 'output of "' // TRIM( var ) // '" requi' // &
334	'res cloud_physics = .TRUE.'
335	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
336	ELSEIF ( icloud_scheme /= 0 ) THEN
337	message_string = 'output of "' // TRIM( var ) // '" requi' // &
338	'res cloud_scheme = seifert_beheng'
339	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
340	ELSEIF ( .NOT. precipitation ) THEN
341	message_string = 'output of "' // TRIM( var ) // '" requi' // &
342	'res precipitation = .TRUE.'
343	CALL message( 'check_parameters', 'PA0112', 1, 2, 0, 6, 0 )
344	ENDIF
345	unit = 'kg/kg'
346
347	CASE ( 'rho' )
348	IF ( .NOT. ocean ) THEN
349	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
350	'" requires ocean = .TRUE.'
351	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
352	ENDIF
353	unit = 'kg/m3'
354
355	CASE ( 's' )
356	IF ( .NOT. passive_scalar ) THEN
357	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
358	'" requires passive_scalar = .TRUE.'
359	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
360	ENDIF
361	unit = 'conc'
362
363	CASE ( 'sa' )
364	IF ( .NOT. ocean ) THEN
365	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
366	'" requires ocean = .TRUE.'
367	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
368	ENDIF
369	unit = 'psu'
370
371	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
372	WRITE ( message_string, * ) 'illegal value for data_',&
373	'output: "', TRIM( var ), '" is only allowed', &
374	'for horizontal cross section'
375	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
376
377	CASE ( 'p', 'pt', 'u', 'v', 'w' )
378	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
379	IF ( TRIM( var ) == 'pt' ) unit = 'K'
380	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
381	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
382	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
383	CONTINUE
384
385	CASE DEFAULT
386	CALL user_check_data_output( var, unit )
387
388	IF ( unit == 'illegal' ) THEN
389	IF ( do_mask_user(mid,1) /= ' ' ) THEN
390	WRITE ( message_string, * ) 'illegal value for data_',&
391	'output or data_output_user: "', &
392	TRIM( do_mask(mid,i) ), '"'
393	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
394	ELSE
395	WRITE ( message_string, * ) 'illegal value for data_',&
396	'output: "', TRIM( do_mask(mid,i) ), '"'
397	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
398	ENDIF
399	ENDIF
400
401	END SELECT
402	!
403	!-- Set the internal steering parameters appropriately
404	domask_no(mid,j) = domask_no(mid,j) + 1
405	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
406	domask_unit(mid,j,domask_no(mid,j)) = unit
407
408	IF ( j == 1 ) THEN
409	!
410	!-- Check, if variable is already subject to averaging
411	found = .FALSE.
412	DO k = 1, doav_n
413	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
414	ENDDO
415
416	IF ( .NOT. found ) THEN
417	doav_n = doav_n + 1
418	doav(doav_n) = var
419	ENDIF
420	ENDIF
421
422	i = i + 1
423
424	ENDDO ! do_mask(mid,i)
425	ENDDO ! mid
426
427
428	!
429	!-- Determine mask locations for each mask
430	DO mid = 1, masks
431	!
432	!-- Set local masks for each subdomain along all three dimensions
433	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
434	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
435	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
436	!
437	!-- Set global masks along all three dimensions (required by
438	!-- define_netcdf_header).
439	#if defined( __parallel ) && ! defined ( __check )
440	!
441	!-- PE0 receives partial arrays from all processors of the respective mask
442	!-- and outputs them. Here a barrier has to be set, because otherwise
443	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
444
445	CALL MPI_BARRIER( comm2d, ierr )
446
447	IF ( myid == 0 ) THEN
448	!
449	!-- Local arrays can be relocated directly.
450	mask_i_global(mid,mask_start_l(mid,1): &
451	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
452	mask_i(mid,:mask_size_l(mid,1))
453	mask_j_global(mid,mask_start_l(mid,2): &
454	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
455	mask_j(mid,:mask_size_l(mid,2))
456	mask_k_global(mid,mask_start_l(mid,3): &
457	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
458	mask_k(mid,:mask_size_l(mid,3))
459	!
460	!-- Receive data from all other PEs.
461	DO n = 1, numprocs-1
462	!
463	!-- Receive index limits first, then arrays.
464	!-- Index limits are received in arbitrary order from the PEs.
465	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
466	comm2d, status, ierr )
467	!
468	!-- Not all PEs have data for the mask.
469	IF ( ind(1) /= -9999 ) THEN
470	sender = status(MPI_SOURCE)
471	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
472	MPI_INTEGER, sender, 1, comm2d, status, ierr )
473	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
474	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
475	MPI_INTEGER, sender, 2, comm2d, status, ierr )
476	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
477	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
478	MPI_INTEGER, sender, 3, comm2d, status, ierr )
479	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
480	ENDIF
481	ENDDO
482
483	ELSE
484	!
485	!-- If at least part of the mask resides on the PE, send the index limits
486	!-- for the target array, otherwise send -9999 to PE0.
487	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
488	mask_size_l(mid,3) > 0 ) THEN
489	ind(1) = mask_start_l(mid,1)
490	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
491	ind(3) = mask_start_l(mid,2)
492	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
493	ind(5) = mask_start_l(mid,3)
494	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
495	ELSE
496	ind(1) = -9999; ind(2) = -9999
497	ind(3) = -9999; ind(4) = -9999
498	ind(5) = -9999; ind(6) = -9999
499	ENDIF
500	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
501	!
502	!-- If applicable, send data to PE0.
503	IF ( ind(1) /= -9999 ) THEN
504	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
505	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
506	MPI_INTEGER, 0, 1, comm2d, ierr )
507	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
508	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
509	MPI_INTEGER, 0, 2, comm2d, ierr )
510	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
511	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
512	MPI_INTEGER, 0, 3, comm2d, ierr )
513	ENDIF
514	ENDIF
515	!
516	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
517	!-- so that PE0 may receive wrong data on tag 0.
518	CALL MPI_BARRIER( comm2d, ierr )
519
520	IF ( netcdf_data_format > 4 ) THEN
521
522	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
523	ierr )
524	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
525	ierr )
526	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
527	ierr )
528
529	ENDIF
530
531	#elif ! defined ( __parallel )
532	!
533	!-- Local arrays can be relocated directly.
534	mask_i_global(mid,:) = mask_i(mid,:)
535	mask_j_global(mid,:) = mask_j(mid,:)
536	mask_k_global(mid,:) = mask_k(mid,:)
537	#endif
538	ENDDO ! mid
539
540	DEALLOCATE( tmp_array )
541	!
542	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
543	!-- required for header output on PE 0.
544	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
545
546	CONTAINS
547
548	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
549	lb, ub )
550	!------------------------------------------------------------------------------!
551	!
552	! Description:
553	! ------------
554	! Set local mask for each subdomain along 'dim' direction.
555	!------------------------------------------------------------------------------!
556
557	IMPLICIT NONE
558
559	CHARACTER (LEN=2) :: dxyz_string !:
560	CHARACTER (LEN=2) :: nxyz_string !:
561
562	INTEGER(iwp) :: count !:
563	INTEGER(iwp) :: count_l !:
564	INTEGER(iwp) :: dim !:
565	INTEGER(iwp) :: m !:
566	INTEGER(iwp) :: loop_begin !:
567	INTEGER(iwp) :: loop_end !:
568	INTEGER(iwp) :: loop_stride !:
569	INTEGER(iwp) :: lb !:
570	INTEGER(iwp) :: nxyz !:
571	INTEGER(iwp) :: ub !:
572
573	REAL(wp) :: dxyz !:
574	REAL(wp) :: ddxyz !:
575	REAL(wp) :: tmp1 !:
576	REAL(wp) :: tmp2 !:
577
578	count = 0; count_l = 0
579	ddxyz = 1.0_wp / dxyz
580	tmp1 = 0.0_wp
581	tmp2 = 0.0_wp
582
583	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
584	!
585	!-- use predefined mask_* array
586	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
587	count = count + 1
588	IF ( dim == 1 .OR. dim == 2 ) THEN
589	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
590	IF ( m < 0 ) m = 0 ! avoid negative values
591	ELSEIF ( dim == 3 ) THEN
592	ind_array = &
593	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
594	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
595	ENDIF
596	IF ( m > (nxyz+1) ) THEN
597	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
598	m,' in mask ',mid,' along dimension ',dim, &
599	' exceeds (',nxyz_string,'+1) = ',nxyz+1
600	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
601	ENDIF
602	IF ( ( m >= lb .AND. m <= ub ) .OR. &
603	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
604	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
605	count_l = count_l + 1
606	IF ( dim == 1 ) THEN
607	mask_i(mid,count_l) = m
608	ELSEIF ( dim == 2 ) THEN
609	mask_j(mid,count_l) = m
610	ELSEIF ( dim == 3 ) THEN
611	mask_k(mid,count_l) = m
612	ENDIF
613	ENDIF
614	IF ( count == mask_xyz_dimension ) EXIT
615	ENDDO
616	mask_size(mid,dim) = count
617	mask_size_l(mid,dim) = count_l
618
619	ELSE
620	!
621	!-- use predefined mask_loop_* array, or use the default (all grid points
622	!-- along this direction)
623	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
624	tmp1 = mask_loop(mid,dim,1)
625	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
626	ENDIF
627	IF ( dim == 1 .OR. dim == 2 ) THEN
628	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
629	tmp2 = mask_loop(mid,dim,2)
630	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
631	ENDIF
632	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
633	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
634	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
635	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
636	' and/or mask_loop(',mid,',',dim,',2)=', &
637	mask_loop(mid,dim,2),'&exceed (', &
638	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
639	(nxyz+1)*dxyz/mask_scale(dim)
640	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
641	ENDIF
642	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
643	* ddxyz - 0.5_wp )
644	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
645	* ddxyz - 0.5_wp )
646	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
647	* ddxyz )
648	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
649	ELSEIF ( dim == 3 ) THEN
650	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
651	tmp2 = mask_loop(mid,dim,2)
652	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
653	ENDIF
654	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
655	> zu(nz+1) / mask_scale(dim) ) THEN
656	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
657	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
658	' and/or mask_loop(',mid,',',dim,',2)=', &
659	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
660	')=',zu(nz+1)/mask_scale(dim)
661	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
662	ENDIF
663	ind_array = &
664	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
665	loop_begin = &
666	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
667	ind_array = &
668	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
669	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
670	!
671	!-- The following line assumes a constant vertical grid spacing within
672	!-- the vertical mask range; it fails for vertical grid stretching.
673	!-- Maybe revise later. Issue warning but continue execution.
674	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
675
676	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
677	THEN
678	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
679	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
680	' exceeds dz_stretch_level=',dz_stretch_level, &
681	'.&Vertical mask locations will not ', &
682	'match the desired heights&within the stretching ', &
683	'region. Recommendation: use mask instead of mask_loop.'
684	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
685	ENDIF
686
687	ENDIF
688	!
689	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
690	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
691	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
692	!
693	!-- The default stride +/-1 (every grid point) applies if
694	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
695	IF ( loop_stride == 0 ) THEN
696	IF ( loop_end >= loop_begin ) THEN
697	loop_stride = 1
698	ELSE
699	loop_stride = -1
700	ENDIF
701	ENDIF
702	DO m = loop_begin, loop_end, loop_stride
703	count = count + 1
704	IF ( ( m >= lb .AND. m <= ub ) .OR. &
705	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
706	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
707	count_l = count_l + 1
708	IF ( dim == 1 ) THEN
709	mask_i(mid,count_l) = m
710	ELSEIF ( dim == 2 ) THEN
711	mask_j(mid,count_l) = m
712	ELSEIF ( dim == 3 ) THEN
713	mask_k(mid,count_l) = m
714	ENDIF
715	ENDIF
716	ENDDO
717	mask_size(mid,dim) = count
718	mask_size_l(mid,dim) = count_l
719
720	ENDIF
721
722	END SUBROUTINE set_mask_locations
723
724	END SUBROUTINE init_masks

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