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source: palm/trunk/SOURCE/init_masks.f90 @ 3042

Last change on this file since 3042 was 2718, checked in by maronga, 7 years ago
deleting of deprecated files; headers updated where needed
Property svn:keywords set to `Id`
File size: 30.5 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 2718 2018-01-02 08:49:38Z schwenkel $
27	! Corrected "Former revisions" section
28	!
29	! 2696 2017-12-14 17:12:51Z kanani
30	! Change in file header (GPL part)
31	!
32	! 2344 2017-08-09 11:00:34Z raasch
33	! explicit setting of initial values for array domask required due to a bug
34	! in the Cray compiler (appears only if option -eD is used)
35	!
36	! 2301 2017-06-29 16:41:21Z gronemeier
37	! Bugfix: set variable name length to global value
38	!
39	!
40	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
41	! includes two more prognostic equations for cloud drop concentration (nc)
42	! and cloud water content (qc).
43	!
44	! 2271 2017-06-09 12:34:55Z sward
45	! Changed error message
46	!
47	! 2101 2017-01-05 16:42:31Z suehring
48	!
49	! 2031 2016-10-21 15:11:58Z knoop
50	! renamed variable rho to rho_ocean
51	!
52	! 2000 2016-08-20 18:09:15Z knoop
53	! Forced header and separation lines into 80 columns
54	!
55	! 1822 2016-04-07 07:49:42Z hoffmann
56	! icloud_scheme replaced by microphysics_*
57	!
58	! 1804 2016-04-05 16:30:18Z maronga
59	! Removed code for parameter file check (__check)
60	!
61	! 1783 2016-03-06 18:36:17Z raasch
62	! netcdf module name changed + related changes
63	!
64	! 1682 2015-10-07 23:56:08Z knoop
65	! Code annotations made doxygen readable
66	!
67	! 1438 2014-07-22 14:14:06Z heinze
68	! +nr, qc, qr
69	!
70	! 1414 2014-05-31 11:19:48Z gronemeier
71	! Bugfix: first and last grid points as they appear in 3D volume data can now
72	! be included to masked data output
73	!
74	! 1353 2014-04-08 15:21:23Z heinze
75	! REAL constants provided with KIND-attribute
76	!
77	! 1324 2014-03-21 09:13:16Z suehring
78	! Bugfix: ONLY statement for module netcdf_control removed
79	!
80	! 1320 2014-03-20 08:40:49Z raasch
81	! ONLY-attribute added to USE-statements,
82	! kind-parameters added to all INTEGER and REAL declaration statements,
83	! kinds are defined in new module kinds,
84	! revision history before 2012 removed,
85	! comment fields (!:) to be used for variable explanations added to
86	! all variable declaration statements
87	!
88	! 1186 2013-06-18 06:22:52Z raasch
89	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
90	! because a zero value does not work in case of ocean runs
91	!
92	! 1036 2012-10-22 13:43:42Z raasch
93	! code put under GPL (PALM 3.9)
94	!
95	! 1032 2012-10-21 13:03:21Z letzel
96	! mask locations determined based on scalar positions
97	!
98	! 1031 2012-10-19 14:35:30Z raasch
99	! netCDF4 without parallel file support implemented
100	!
101	! 996 2012-09-07 10:41:47Z raasch
102	! little reformatting
103	!
104	! 978 2012-08-09 08:28:32Z fricke
105	! +z0h*
106	!
107	! 809 2012-01-30 13:32:58Z maronga
108	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
109	!
110	! 807 2012-01-25 11:53:51Z maronga
111	! New cpp directive "__check" implemented which is used by check_namelist_files
112	!
113	! 410 2009-12-04 17:05:40Z letzel
114	! Initial revision
115	!
116	!
117	! Description:
118	! ------------
119	!> Initialize masked data output
120	!------------------------------------------------------------------------------!
121	SUBROUTINE init_masks
122
123	USE arrays_3d, &
124	ONLY: zu, zw
125
126	USE control_parameters, &
127	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
128	data_output_masks, data_output_masks_user, &
129	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
130	mask, masks, mask_scale, mask_i, &
131	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
132	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
133	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
134	mask_z_loop, max_masks, message_string, mid, &
135	microphysics_morrison, microphysics_seifert, passive_scalar, &
136	ocean, varnamelength
137
138	USE grid_variables, &
139	ONLY: dx, dy
140
141	USE indices, &
142	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
143
144	USE kinds
145
146	USE netcdf_interface, &
147	ONLY: domask_unit, netcdf_data_format
148
149	USE particle_attributes, &
150	ONLY: particle_advection
151
152	USE pegrid
153
154	IMPLICIT NONE
155
156	CHARACTER (LEN=varnamelength) :: var !<
157	CHARACTER (LEN=7) :: unit !<
158
159	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !<
160	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !<
161
162	INTEGER(iwp) :: i !<
163	INTEGER(iwp) :: ilen !<
164	INTEGER(iwp) :: ind(6) !<
165	INTEGER(iwp) :: ind_array(1) !<
166	INTEGER(iwp) :: j !<
167	INTEGER(iwp) :: k !<
168	INTEGER(iwp) :: n !<
169	INTEGER(iwp) :: sender !<
170
171	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
172
173	LOGICAL :: found !<
174
175	!
176	!-- Initial values are explicitly set here due to a bug in the Cray compiler
177	!-- in case of assignments of initial values in declaration statements for
178	!-- arrays with more than 9999 elements (appears with -eD only)
179	domask = ' '
180
181	!
182	!-- Allocation and initialization
183	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
184
185	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
186	mask_j(max_masks,nyn-nys+2), &
187	mask_k(max_masks,nzt-nzb+2) )
188	!
189	!-- internal mask arrays ("mask,dimension,selection")
190	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
191	mask_loop(max_masks,3,3) )
192
193	!
194	!-- Parallel mask output not yet tested
195	IF ( netcdf_data_format > 4 ) THEN
196	message_string = 'netCDF file formats '// &
197	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
198	'&are currently not supported (not yet tested).'
199	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
200	ENDIF
201
202	!
203	!-- Store data output parameters for masked data output in few shared arrays
204	DO mid = 1, masks
205
206	do_mask (mid,:) = data_output_masks(mid,:)
207	do_mask_user(mid,:) = data_output_masks_user(mid,:)
208	mask (mid,1,:) = mask_x(mid,:)
209	mask (mid,2,:) = mask_y(mid,:)
210	mask (mid,3,:) = mask_z(mid,:)
211
212	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
213	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
214	mask_loop(mid,1,1:2) = -1.0_wp
215	mask_loop(mid,1,3) = 0.0_wp
216	ELSE
217	mask_loop(mid,1,:) = mask_x_loop(mid,:)
218	ENDIF
219	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
220	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
221	mask_loop(mid,2,1:2) = -1.0_wp
222	mask_loop(mid,2,3) = 0.0_wp
223	ELSE
224	mask_loop(mid,2,:) = mask_y_loop(mid,:)
225	ENDIF
226	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
227	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
228	mask_loop(mid,3,1:2) = -1.0_wp
229	mask_loop(mid,3,3) = 0.0_wp
230	ELSE
231	mask_loop(mid,3,:) = mask_z_loop(mid,:)
232	ENDIF
233
234	ENDDO
235
236	mask_i = -1; mask_j = -1; mask_k = -1
237
238	!
239	!-- Global arrays are required by define_netcdf_header.
240	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
241	ALLOCATE( mask_i_global(max_masks,nx+2), &
242	mask_j_global(max_masks,ny+2), &
243	mask_k_global(max_masks,nz+2) )
244	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
245	ENDIF
246
247	!
248	!-- Determine variable names for each mask
249	DO mid = 1, masks
250	!
251	!-- Append user-defined data output variables to the standard data output
252	IF ( do_mask_user(mid,1) /= ' ' ) THEN
253	i = 1
254	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
255	i = i + 1
256	ENDDO
257	j = 1
258	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
259	IF ( i > 100 ) THEN
260	WRITE ( message_string, * ) 'number of output quantitities ', &
261	'given by data_output_mask and data_output_mask_user ', &
262	'exceeds the limit of 100'
263	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
264	ENDIF
265	do_mask(mid,i) = do_mask_user(mid,j)
266	i = i + 1
267	j = j + 1
268	ENDDO
269	ENDIF
270
271	!
272	!-- Check and set steering parameters for mask data output and averaging
273	i = 1
274	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
275	!
276	!-- Check for data averaging
277	ilen = LEN_TRIM( do_mask(mid,i) )
278	j = 0 ! no data averaging
279	IF ( ilen > 3 ) THEN
280	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
281	j = 1 ! data averaging
282	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
283	ENDIF
284	ENDIF
285	var = TRIM( do_mask(mid,i) )
286	!
287	!-- Check for allowed value and set units
288	SELECT CASE ( TRIM( var ) )
289
290	CASE ( 'e' )
291	IF ( constant_diffusion ) THEN
292	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
293	'" requires constant_diffusion = .FALSE.'
294	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
295	ENDIF
296	unit = 'm2/s2'
297
298	CASE ( 'lpt' )
299	IF ( .NOT. cloud_physics ) THEN
300	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
301	'" requires cloud_physics = .TRUE.'
302	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
303	ENDIF
304	unit = 'K'
305
306	CASE ( 'nc' )
307	IF ( .NOT. cloud_physics ) THEN
308	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
309	'" requires cloud_physics = .TRUE.'
310	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
311	ELSEIF ( .NOT. microphysics_morrison ) THEN
312	message_string = 'output of "' // TRIM( var ) // '" requi' // &
313	'res = morrison'
314	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
315	ENDIF
316	unit = '1/m3'
317
318	CASE ( 'nr' )
319	IF ( .NOT. cloud_physics ) THEN
320	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
321	'" requires cloud_physics = .TRUE.'
322	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
323	ELSEIF ( .NOT. microphysics_seifert ) THEN
324	message_string = 'output of "' // TRIM( var ) // '" requi' // &
325	'res cloud_scheme = seifert_beheng'
326	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
327	ENDIF
328	unit = '1/m3'
329
330	CASE ( 'pc', 'pr' )
331	IF ( .NOT. particle_advection ) THEN
332	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
333	'" requires a "particles_par"-NAMELIST in the ', &
334	'parameter file (PARIN)'
335	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
336	ENDIF
337	IF ( TRIM( var ) == 'pc' ) unit = 'number'
338	IF ( TRIM( var ) == 'pr' ) unit = 'm'
339
340	CASE ( 'q', 'vpt' )
341	IF ( .NOT. humidity ) THEN
342	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
343	'" requires humidity = .TRUE.'
344	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
345	ENDIF
346	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
347	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
348
349	CASE ( 'qc' )
350	IF ( .NOT. cloud_physics ) THEN
351	message_string = 'output of "' // TRIM( var ) // '" requi' // &
352	'res cloud_physics = .TRUE.'
353	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
354	ENDIF
355	unit = 'kg/kg'
356
357	CASE ( 'ql' )
358	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
359	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
360	'" requires cloud_physics = .TRUE. or cloud_droplets', &
361	' = .TRUE.'
362	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
363	ENDIF
364	unit = 'kg/kg'
365
366	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
367	IF ( .NOT. cloud_droplets ) THEN
368	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
369	'" requires cloud_droplets = .TRUE.'
370	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
371	ENDIF
372	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
373	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
374	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
375
376	CASE ( 'qv' )
377	IF ( .NOT. cloud_physics ) THEN
378	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
379	'" requires cloud_physics = .TRUE.'
380	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
381	ENDIF
382	unit = 'kg/kg'
383
384	CASE ( 'qr' )
385	IF ( .NOT. cloud_physics ) THEN
386	message_string = 'output of "' // TRIM( var ) // '" requi' // &
387	'res cloud_physics = .TRUE.'
388	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
389	ELSEIF ( .NOT. microphysics_seifert ) THEN
390	message_string = 'output of "' // TRIM( var ) // '" requi' // &
391	'res cloud_scheme = seifert_beheng'
392	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
393	ENDIF
394	unit = 'kg/kg'
395
396	CASE ( 'rho_ocean' )
397	IF ( .NOT. ocean ) THEN
398	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
399	'" requires ocean = .TRUE.'
400	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
401	ENDIF
402	unit = 'kg/m3'
403
404	CASE ( 's' )
405	IF ( .NOT. passive_scalar ) THEN
406	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
407	'" requires passive_scalar = .TRUE.'
408	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
409	ENDIF
410	unit = 'conc'
411
412	CASE ( 'sa' )
413	IF ( .NOT. ocean ) THEN
414	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
415	'" requires ocean = .TRUE.'
416	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
417	ENDIF
418	unit = 'psu'
419
420	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
421	WRITE ( message_string, * ) 'illegal value for data_',&
422	'output: "', TRIM( var ), '" is only allowed', &
423	'for horizontal cross section'
424	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
425
426	CASE ( 'p', 'pt', 'u', 'v', 'w' )
427	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
428	IF ( TRIM( var ) == 'pt' ) unit = 'K'
429	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
430	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
431	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
432	CONTINUE
433
434	CASE DEFAULT
435	CALL user_check_data_output( var, unit )
436
437	IF ( unit == 'illegal' ) THEN
438	IF ( do_mask_user(mid,1) /= ' ' ) THEN
439	WRITE ( message_string, * ) 'illegal value for data_',&
440	'output or data_output_user: "', &
441	TRIM( do_mask(mid,i) ), '"'
442	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
443	ELSE
444	WRITE ( message_string, * ) 'illegal value for data_',&
445	'output: "', TRIM( do_mask(mid,i) ), '"'
446	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
447	ENDIF
448	ENDIF
449
450	END SELECT
451	!
452	!-- Set the internal steering parameters appropriately
453	domask_no(mid,j) = domask_no(mid,j) + 1
454	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
455	domask_unit(mid,j,domask_no(mid,j)) = unit
456
457	IF ( j == 1 ) THEN
458	!
459	!-- Check, if variable is already subject to averaging
460	found = .FALSE.
461	DO k = 1, doav_n
462	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
463	ENDDO
464
465	IF ( .NOT. found ) THEN
466	doav_n = doav_n + 1
467	doav(doav_n) = var
468	ENDIF
469	ENDIF
470
471	i = i + 1
472
473	ENDDO ! do_mask(mid,i)
474	ENDDO ! mid
475
476
477	!
478	!-- Determine mask locations for each mask
479	DO mid = 1, masks
480	!
481	!-- Set local masks for each subdomain along all three dimensions
482	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
483	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
484	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
485	!
486	!-- Set global masks along all three dimensions (required by
487	!-- define_netcdf_header).
488	#if defined( __parallel )
489	!
490	!-- PE0 receives partial arrays from all processors of the respective mask
491	!-- and outputs them. Here a barrier has to be set, because otherwise
492	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
493
494	CALL MPI_BARRIER( comm2d, ierr )
495
496	IF ( myid == 0 ) THEN
497	!
498	!-- Local arrays can be relocated directly.
499	mask_i_global(mid,mask_start_l(mid,1): &
500	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
501	mask_i(mid,:mask_size_l(mid,1))
502	mask_j_global(mid,mask_start_l(mid,2): &
503	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
504	mask_j(mid,:mask_size_l(mid,2))
505	mask_k_global(mid,mask_start_l(mid,3): &
506	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
507	mask_k(mid,:mask_size_l(mid,3))
508	!
509	!-- Receive data from all other PEs.
510	DO n = 1, numprocs-1
511	!
512	!-- Receive index limits first, then arrays.
513	!-- Index limits are received in arbitrary order from the PEs.
514	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
515	comm2d, status, ierr )
516	!
517	!-- Not all PEs have data for the mask.
518	IF ( ind(1) /= -9999 ) THEN
519	sender = status(MPI_SOURCE)
520	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
521	MPI_INTEGER, sender, 1, comm2d, status, ierr )
522	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
523	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
524	MPI_INTEGER, sender, 2, comm2d, status, ierr )
525	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
526	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
527	MPI_INTEGER, sender, 3, comm2d, status, ierr )
528	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
529	ENDIF
530	ENDDO
531
532	ELSE
533	!
534	!-- If at least part of the mask resides on the PE, send the index limits
535	!-- for the target array, otherwise send -9999 to PE0.
536	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
537	mask_size_l(mid,3) > 0 ) THEN
538	ind(1) = mask_start_l(mid,1)
539	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
540	ind(3) = mask_start_l(mid,2)
541	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
542	ind(5) = mask_start_l(mid,3)
543	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
544	ELSE
545	ind(1) = -9999; ind(2) = -9999
546	ind(3) = -9999; ind(4) = -9999
547	ind(5) = -9999; ind(6) = -9999
548	ENDIF
549	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
550	!
551	!-- If applicable, send data to PE0.
552	IF ( ind(1) /= -9999 ) THEN
553	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
554	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
555	MPI_INTEGER, 0, 1, comm2d, ierr )
556	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
557	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
558	MPI_INTEGER, 0, 2, comm2d, ierr )
559	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
560	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
561	MPI_INTEGER, 0, 3, comm2d, ierr )
562	ENDIF
563	ENDIF
564	!
565	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
566	!-- so that PE0 may receive wrong data on tag 0.
567	CALL MPI_BARRIER( comm2d, ierr )
568
569	IF ( netcdf_data_format > 4 ) THEN
570
571	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
572	ierr )
573	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
574	ierr )
575	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
576	ierr )
577
578	ENDIF
579
580	#else
581	!
582	!-- Local arrays can be relocated directly.
583	mask_i_global(mid,:) = mask_i(mid,:)
584	mask_j_global(mid,:) = mask_j(mid,:)
585	mask_k_global(mid,:) = mask_k(mid,:)
586	#endif
587	ENDDO ! mid
588
589	DEALLOCATE( tmp_array )
590	!
591	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
592	!-- required for header output on PE 0.
593	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
594
595	CONTAINS
596
597	!------------------------------------------------------------------------------!
598	! Description:
599	! ------------
600	!> Set local mask for each subdomain along 'dim' direction.
601	!------------------------------------------------------------------------------!
602	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
603	lb, ub )
604
605	IMPLICIT NONE
606
607	CHARACTER (LEN=2) :: dxyz_string !<
608	CHARACTER (LEN=2) :: nxyz_string !<
609
610	INTEGER(iwp) :: count !<
611	INTEGER(iwp) :: count_l !<
612	INTEGER(iwp) :: dim !<
613	INTEGER(iwp) :: m !<
614	INTEGER(iwp) :: loop_begin !<
615	INTEGER(iwp) :: loop_end !<
616	INTEGER(iwp) :: loop_stride !<
617	INTEGER(iwp) :: lb !<
618	INTEGER(iwp) :: nxyz !<
619	INTEGER(iwp) :: ub !<
620
621	REAL(wp) :: dxyz !<
622	REAL(wp) :: ddxyz !<
623	REAL(wp) :: tmp1 !<
624	REAL(wp) :: tmp2 !<
625
626	count = 0; count_l = 0
627	ddxyz = 1.0_wp / dxyz
628	tmp1 = 0.0_wp
629	tmp2 = 0.0_wp
630
631	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
632	!
633	!-- use predefined mask_* array
634	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
635	count = count + 1
636	IF ( dim == 1 .OR. dim == 2 ) THEN
637	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
638	IF ( m < 0 ) m = 0 ! avoid negative values
639	ELSEIF ( dim == 3 ) THEN
640	ind_array = &
641	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
642	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
643	ENDIF
644	IF ( m > (nxyz+1) ) THEN
645	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
646	m,' in mask ',mid,' along dimension ',dim, &
647	' exceeds (',nxyz_string,'+1) = ',nxyz+1
648	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
649	ENDIF
650	IF ( ( m >= lb .AND. m <= ub ) .OR. &
651	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
652	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
653	count_l = count_l + 1
654	IF ( dim == 1 ) THEN
655	mask_i(mid,count_l) = m
656	ELSEIF ( dim == 2 ) THEN
657	mask_j(mid,count_l) = m
658	ELSEIF ( dim == 3 ) THEN
659	mask_k(mid,count_l) = m
660	ENDIF
661	ENDIF
662	IF ( count == mask_xyz_dimension ) EXIT
663	ENDDO
664	mask_size(mid,dim) = count
665	mask_size_l(mid,dim) = count_l
666
667	ELSE
668	!
669	!-- use predefined mask_loop_* array, or use the default (all grid points
670	!-- along this direction)
671	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
672	tmp1 = mask_loop(mid,dim,1)
673	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
674	ENDIF
675	IF ( dim == 1 .OR. dim == 2 ) THEN
676	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
677	tmp2 = mask_loop(mid,dim,2)
678	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
679	ENDIF
680	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
681	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
682	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
683	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
684	' and/or mask_loop(',mid,',',dim,',2)=', &
685	mask_loop(mid,dim,2),'&exceed (', &
686	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
687	(nxyz+1)*dxyz/mask_scale(dim)
688	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
689	ENDIF
690	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
691	* ddxyz - 0.5_wp )
692	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
693	* ddxyz - 0.5_wp )
694	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
695	* ddxyz )
696	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
697	ELSEIF ( dim == 3 ) THEN
698	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
699	tmp2 = mask_loop(mid,dim,2)
700	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
701	ENDIF
702	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
703	> zu(nz+1) / mask_scale(dim) ) THEN
704	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
705	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
706	' and/or mask_loop(',mid,',',dim,',2)=', &
707	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
708	')=',zu(nz+1)/mask_scale(dim)
709	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
710	ENDIF
711	ind_array = &
712	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
713	loop_begin = &
714	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
715	ind_array = &
716	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
717	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
718	!
719	!-- The following line assumes a constant vertical grid spacing within
720	!-- the vertical mask range; it fails for vertical grid stretching.
721	!-- Maybe revise later. Issue warning but continue execution.
722	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
723
724	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
725	THEN
726	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
727	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
728	' exceeds dz_stretch_level=',dz_stretch_level, &
729	'.&Vertical mask locations will not ', &
730	'match the desired heights&within the stretching ', &
731	'region.'
732	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
733	ENDIF
734
735	ENDIF
736	!
737	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
738	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
739	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
740	!
741	!-- The default stride +/-1 (every grid point) applies if
742	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
743	IF ( loop_stride == 0 ) THEN
744	IF ( loop_end >= loop_begin ) THEN
745	loop_stride = 1
746	ELSE
747	loop_stride = -1
748	ENDIF
749	ENDIF
750	DO m = loop_begin, loop_end, loop_stride
751	count = count + 1
752	IF ( ( m >= lb .AND. m <= ub ) .OR. &
753	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
754	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
755	count_l = count_l + 1
756	IF ( dim == 1 ) THEN
757	mask_i(mid,count_l) = m
758	ELSEIF ( dim == 2 ) THEN
759	mask_j(mid,count_l) = m
760	ELSEIF ( dim == 3 ) THEN
761	mask_k(mid,count_l) = m
762	ENDIF
763	ENDIF
764	ENDDO
765	mask_size(mid,dim) = count
766	mask_size_l(mid,dim) = count_l
767
768	ENDIF
769
770	END SUBROUTINE set_mask_locations
771
772	END SUBROUTINE init_masks

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