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source: palm/trunk/SOURCE/init_masks.f90 @ 4290

Last change on this file since 4290 was 4182, checked in by scharf, 5 years ago
corrected "Former revisions" section minor formatting in "Former revisions" section added "Author" section
Property svn:keywords set to `Id`
File size: 31.0 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 1997-2019 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_masks.f90 4182 2019-08-22 15:20:23Z banzhafs $
27	! Corrected "Former revisions" section
28	!
29	! 4069 2019-07-01 14:05:51Z Giersch
30	! Masked output running index mid has been introduced as a local variable to
31	! avoid runtime error (Loop variable has been modified) in time_integration
32	!
33	! 3766 2019-02-26 16:23:41Z raasch
34	! unused variables removed
35	!
36	! 3687 2019-01-22 10:42:06Z knoop
37	! unused variables removed
38	!
39	! 3655 2019-01-07 16:51:22Z knoop
40	! Move the control parameter "salsa" from salsa_mod to control_parameters
41	! (M. Kurppa)
42	!
43	! 410 2009-12-04 17:05:40Z letzel
44	! Initial revision
45	!
46	!
47	! Description:
48	! ------------
49	!> Initialize masked data output
50	!------------------------------------------------------------------------------!
51	SUBROUTINE init_masks
52
53	USE arrays_3d, &
54	ONLY: zu, zw
55
56	USE bulk_cloud_model_mod, &
57	ONLY: bulk_cloud_model, microphysics_morrison, microphysics_seifert
58
59	USE control_parameters, &
60	ONLY: constant_diffusion, cloud_droplets, &
61	data_output_masks, data_output_masks_user, &
62	doav, doav_n, domask, domask_no, dz, dz_stretch_level_start, &
63	humidity, mask, masks, mask_scale, mask_i, &
64	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
65	mask_k_over_surface, &
66	mask_loop, mask_size, mask_size_l, mask_start_l, &
67	mask_surface, mask_x, &
68	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
69	mask_z_loop, max_masks, message_string, &
70	passive_scalar, ocean_mode, varnamelength
71
72	USE grid_variables, &
73	ONLY: dx, dy
74
75	USE indices, &
76	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
77
78	USE kinds
79
80	USE module_interface, &
81	ONLY: module_interface_init_masks
82
83	USE netcdf_interface, &
84	ONLY: domask_unit, netcdf_data_format
85
86	USE particle_attributes, &
87	ONLY: particle_advection
88
89	USE pegrid
90
91	IMPLICIT NONE
92
93	CHARACTER (LEN=varnamelength) :: var !< contains variable name
94	CHARACTER (LEN=7) :: unit !< contains unit of variable
95
96	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !< list of output variables
97	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !< list of user-specified output variables
98
99	INTEGER(iwp) :: count !< counting masking indices along a dimension
100	INTEGER(iwp) :: i !< loop index
101	INTEGER(iwp) :: ilen !< length of string saved in 'do_mask'
102	INTEGER(iwp) :: ind(6) !< index limits (lower/upper bounds) of output array
103	INTEGER(iwp) :: ind_array(1) !< array index
104	INTEGER(iwp) :: j !< loop index
105	INTEGER(iwp) :: k !< loop index
106	INTEGER(iwp) :: m !< mask index
107	INTEGER(iwp) :: mid !< masked output running index
108	INTEGER(iwp) :: n !< loop index
109	INTEGER(iwp) :: sender !< PE id of sending PE
110
111	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !< temporary 1D array
112
113	LOGICAL :: found !< true if variable is found
114
115	!
116	!-- Initial values are explicitly set here due to a bug in the Cray compiler
117	!-- in case of assignments of initial values in declaration statements for
118	!-- arrays with more than 9999 elements (appears with -eD only)
119	domask = ' '
120
121	!
122	!-- Allocation and initialization
123	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
124
125	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
126	mask_j(max_masks,nyn-nys+2), &
127	mask_k(max_masks,nzt-nzb+2) )
128	!
129	!-- internal mask arrays ("mask,dimension,selection")
130	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
131	mask_loop(max_masks,3,3) )
132
133	!
134	!-- Parallel mask output not yet supported. In check_parameters data format
135	!-- is restricted and is switched back to non-parallel output. Therefore the
136	!-- following error can not occur at the moment.
137	IF ( netcdf_data_format > 4 ) THEN
138	message_string = 'netCDF file formats '// &
139	'5 and 6 (with parallel I/O support)'// &
140	' are currently not supported.'
141	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
142	ENDIF
143
144	!
145	!-- Store data output parameters for masked data output in few shared arrays
146	DO mid = 1, masks
147
148	do_mask (mid,:) = data_output_masks(mid,:)
149	do_mask_user(mid,:) = data_output_masks_user(mid,:)
150	mask (mid,1,:) = mask_x(mid,:)
151	mask (mid,2,:) = mask_y(mid,:)
152	mask (mid,3,:) = mask_z(mid,:)
153	!
154	!-- Flag a mask as terrain following
155	IF ( mask_k_over_surface(mid,1) /= -1_iwp ) THEN
156	mask_surface(mid) = .TRUE.
157	ENDIF
158
159	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
160	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
161	mask_loop(mid,1,1:2) = -1.0_wp
162	mask_loop(mid,1,3) = 0.0_wp
163	ELSE
164	mask_loop(mid,1,:) = mask_x_loop(mid,:)
165	ENDIF
166	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
167	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
168	mask_loop(mid,2,1:2) = -1.0_wp
169	mask_loop(mid,2,3) = 0.0_wp
170	ELSE
171	mask_loop(mid,2,:) = mask_y_loop(mid,:)
172	ENDIF
173	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
174	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
175	mask_loop(mid,3,1:2) = -1.0_wp
176	mask_loop(mid,3,3) = 0.0_wp
177	ELSE
178	mask_loop(mid,3,:) = mask_z_loop(mid,:)
179	ENDIF
180
181	ENDDO
182
183	mask_i = -1; mask_j = -1; mask_k = -1
184
185	!
186	!-- Global arrays are required by define_netcdf_header.
187	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
188	ALLOCATE( mask_i_global(max_masks,nx+2), &
189	mask_j_global(max_masks,ny+2), &
190	mask_k_global(max_masks,nz+2) )
191	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
192	ENDIF
193
194	!
195	!-- Determine variable names for each mask
196	DO mid = 1, masks
197	!
198	!-- Append user-defined data output variables to the standard data output
199	IF ( do_mask_user(mid,1) /= ' ' ) THEN
200	i = 1
201	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
202	i = i + 1
203	ENDDO
204	j = 1
205	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
206	IF ( i > 100 ) THEN
207	WRITE ( message_string, * ) 'number of output quantitities ', &
208	'given by data_output_mask and data_output_mask_user ', &
209	'exceeds the limit of 100'
210	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
211	ENDIF
212	do_mask(mid,i) = do_mask_user(mid,j)
213	i = i + 1
214	j = j + 1
215	ENDDO
216	ENDIF
217
218	!
219	!-- Check and set steering parameters for mask data output and averaging
220	i = 1
221	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
222	!
223	!-- Check for data averaging
224	ilen = LEN_TRIM( do_mask(mid,i) )
225	j = 0 ! no data averaging
226	IF ( ilen > 3 ) THEN
227	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
228	j = 1 ! data averaging
229	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
230	ENDIF
231	ENDIF
232	var = TRIM( do_mask(mid,i) )
233	!
234	!-- Check for allowed value and set units
235	SELECT CASE ( TRIM( var ) )
236
237	CASE ( 'e' )
238	IF ( constant_diffusion ) THEN
239	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
240	'" requires constant_diffusion = .FALSE.'
241	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
242	ENDIF
243	unit = 'm2/s2'
244
245	CASE ( 'thetal' )
246	IF ( .NOT. bulk_cloud_model ) THEN
247	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
248	'" requires bulk_cloud_model = .TRUE.'
249	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
250	ENDIF
251	unit = 'K'
252
253	CASE ( 'nc' )
254	IF ( .NOT. bulk_cloud_model ) THEN
255	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
256	'" requires bulk_cloud_model = .TRUE.'
257	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
258	ELSEIF ( .NOT. microphysics_morrison ) THEN
259	message_string = 'output of "' // TRIM( var ) // '" ' // &
260	'requires = morrison'
261	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
262	ENDIF
263	unit = '1/m3'
264
265	CASE ( 'nr' )
266	IF ( .NOT. bulk_cloud_model ) THEN
267	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
268	'" requires bulk_cloud_model = .TRUE.'
269	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
270	ELSEIF ( .NOT. microphysics_seifert ) THEN
271	message_string = 'output of "' // TRIM( var ) // '"' // &
272	'requires cloud_scheme = seifert_beheng'
273	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
274	ENDIF
275	unit = '1/m3'
276
277	CASE ( 'pc', 'pr' )
278	IF ( .NOT. particle_advection ) THEN
279	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
280	'" requires a "particles_par"-NAMELIST in the ', &
281	'parameter file (PARIN)'
282	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
283	ENDIF
284	IF ( TRIM( var ) == 'pc' ) unit = 'number'
285	IF ( TRIM( var ) == 'pr' ) unit = 'm'
286
287	CASE ( 'q', 'thetav' )
288	IF ( .NOT. humidity ) THEN
289	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
290	'" requires humidity = .TRUE.'
291	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
292	ENDIF
293	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
294	IF ( TRIM( var ) == 'thetav' ) unit = 'K'
295
296	CASE ( 'qc' )
297	IF ( .NOT. bulk_cloud_model ) THEN
298	message_string = 'output of "' // TRIM( var ) // '"' // &
299	'requires bulk_cloud_model = .TRUE.'
300	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
301	ENDIF
302	unit = 'kg/kg'
303
304	CASE ( 'ql' )
305	IF ( .NOT. ( bulk_cloud_model .OR. cloud_droplets ) ) THEN
306	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
307	'" requires bulk_cloud_model = .TRUE. or ', &
308	'cloud_droplets = .TRUE.'
309	CALL message( 'init_masks', 'PA0106', 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. bulk_cloud_model ) THEN
325	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
326	'" requires bulk_cloud_model = .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. bulk_cloud_model ) THEN
333	message_string = 'output of "' // TRIM( var ) // '" ' // &
334	'requires bulk_cloud_model = .TRUE.'
335	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
336	ELSEIF ( .NOT. microphysics_seifert ) THEN
337	message_string = 'output of "' // TRIM( var ) // '" ' // &
338	'requires cloud_scheme = seifert_beheng'
339	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
340	ENDIF
341	unit = 'kg/kg'
342
343	CASE ( 'rho_sea_water' )
344	IF ( .NOT. ocean_mode ) THEN
345	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
346	'" requires ocean mode'
347	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
348	ENDIF
349	unit = 'kg/m3'
350
351	CASE ( 's' )
352	IF ( .NOT. passive_scalar ) THEN
353	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
354	'" requires passive_scalar = .TRUE.'
355	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
356	ENDIF
357	unit = 'conc'
358
359	CASE ( 'sa' )
360	IF ( .NOT. ocean_mode ) THEN
361	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
362	'" requires ocean mode'
363	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
364	ENDIF
365	unit = 'psu'
366
367	CASE ( 'us', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
368	WRITE ( message_string, * ) 'illegal value for data_', &
369	'output: "', TRIM( var ), '" is only allowed', &
370	'for horizontal cross section'
371	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
372
373	CASE ( 'p', 'theta', 'u', 'v', 'w' )
374	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
375	IF ( TRIM( var ) == 'theta' ) unit = 'K'
376	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
377	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
378	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
379	CONTINUE
380
381	CASE DEFAULT
382	!
383	!-- Allocate arrays for other modules
384	CALL module_interface_init_masks( var, unit )
385
386	IF ( unit == 'illegal' ) THEN
387	IF ( do_mask_user(mid,1) /= ' ' ) THEN
388	WRITE ( message_string, * ) 'illegal value for data_', &
389	'output_masks or data_output_masks_user: "', &
390	TRIM( do_mask(mid,i) ), '"'
391	CALL message( 'init_masks', 'PA0018', 1, 2, 0, 6, 0 )
392	ELSE
393	WRITE ( message_string, * ) 'illegal value for data_', &
394	' output_masks : "', TRIM( do_mask(mid,i) ), '"'
395	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
396	ENDIF
397	ENDIF
398
399	END SELECT
400	!
401	!-- Set the internal steering parameters appropriately
402	domask_no(mid,j) = domask_no(mid,j) + 1
403	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
404	domask_unit(mid,j,domask_no(mid,j)) = unit
405
406	IF ( j == 1 ) THEN
407	!
408	!-- Check, if variable is already subject to averaging
409	found = .FALSE.
410	DO k = 1, doav_n
411	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
412	ENDDO
413
414	IF ( .NOT. found ) THEN
415	doav_n = doav_n + 1
416	doav(doav_n) = var
417	ENDIF
418	ENDIF
419
420	i = i + 1
421
422	ENDDO ! do_mask(mid,i)
423	ENDDO ! mid
424
425
426	!
427	!-- Determine mask locations for each mask
428	DO mid = 1, masks
429	!
430	!-- Set local masks for each subdomain along all three dimensions
431	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
432	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
433	IF ( .NOT. mask_surface(mid) ) THEN
434	CALL set_mask_locations( 3, dz(1), 'dz', nz, 'nz', nzb, nzt )
435	ELSE
436	!
437	!-- Set vertical mask locations and size in case of terrain-following
438	!-- output
439	count = 0
440	DO WHILE ( mask_k_over_surface(mid, count+1) >= 0 )
441	m = mask_k_over_surface(mid, count+1)
442	IF ( m > nz+1 ) THEN
443	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
444	m,' in mask ',mid,' along dimension ', 3, &
445	' exceeds (nz+1) = ',nz+1
446	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
447	ENDIF
448	count = count + 1
449	mask_k(mid,count) = mask_k_over_surface(mid, count)
450	IF ( count == mask_xyz_dimension ) EXIT
451	ENDDO
452	mask_start_l(mid,3) = 1
453	mask_size(mid,3) = count
454	mask_size_l(mid,3) = count
455	ENDIF
456	!
457	!-- Set global masks along all three dimensions (required by
458	!-- define_netcdf_header).
459	#if defined( __parallel )
460	!
461	!-- PE0 receives partial arrays from all processors of the respective mask
462	!-- and outputs them. Here a barrier has to be set, because otherwise
463	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
464
465	CALL MPI_BARRIER( comm2d, ierr )
466
467	IF ( myid == 0 ) THEN
468	!
469	!-- Local arrays can be relocated directly.
470	mask_i_global(mid,mask_start_l(mid,1): &
471	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
472	mask_i(mid,:mask_size_l(mid,1))
473	mask_j_global(mid,mask_start_l(mid,2): &
474	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
475	mask_j(mid,:mask_size_l(mid,2))
476	mask_k_global(mid,mask_start_l(mid,3): &
477	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
478	mask_k(mid,:mask_size_l(mid,3))
479	!
480	!-- Receive data from all other PEs.
481	DO n = 1, numprocs-1
482	!
483	!-- Receive index limits first, then arrays.
484	!-- Index limits are received in arbitrary order from the PEs.
485	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
486	comm2d, status, ierr )
487	!
488	!-- Not all PEs have data for the mask.
489	IF ( ind(1) /= -9999 ) THEN
490	sender = status(MPI_SOURCE)
491	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
492	MPI_INTEGER, sender, 1, comm2d, status, ierr )
493	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
494	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
495	MPI_INTEGER, sender, 2, comm2d, status, ierr )
496	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
497	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
498	MPI_INTEGER, sender, 3, comm2d, status, ierr )
499	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
500	ENDIF
501	ENDDO
502
503	ELSE
504	!
505	!-- If at least part of the mask resides on the PE, send the index limits
506	!-- for the target array, otherwise send -9999 to PE0.
507	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
508	mask_size_l(mid,3) > 0 ) THEN
509	ind(1) = mask_start_l(mid,1)
510	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
511	ind(3) = mask_start_l(mid,2)
512	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
513	ind(5) = mask_start_l(mid,3)
514	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
515	ELSE
516	ind(1) = -9999; ind(2) = -9999
517	ind(3) = -9999; ind(4) = -9999
518	ind(5) = -9999; ind(6) = -9999
519	ENDIF
520	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
521	!
522	!-- If applicable, send data to PE0.
523	IF ( ind(1) /= -9999 ) THEN
524	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
525	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
526	MPI_INTEGER, 0, 1, comm2d, ierr )
527	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
528	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
529	MPI_INTEGER, 0, 2, comm2d, ierr )
530	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
531	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
532	MPI_INTEGER, 0, 3, comm2d, ierr )
533	ENDIF
534	ENDIF
535	!
536	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
537	!-- so that PE0 may receive wrong data on tag 0.
538	CALL MPI_BARRIER( comm2d, ierr )
539
540	IF ( netcdf_data_format > 4 ) THEN
541
542	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
543	ierr )
544	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
545	ierr )
546	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
547	ierr )
548
549	ENDIF
550
551	#else
552	!
553	!-- Local arrays can be relocated directly.
554	mask_i_global(mid,:) = mask_i(mid,:)
555	mask_j_global(mid,:) = mask_j(mid,:)
556	mask_k_global(mid,:) = mask_k(mid,:)
557	#endif
558	ENDDO ! mid
559
560	DEALLOCATE( tmp_array )
561	!
562	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
563	!-- required for header output on PE 0.
564	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
565
566	CONTAINS
567
568	!------------------------------------------------------------------------------!
569	! Description:
570	! ------------
571	!> Set local mask for each subdomain along 'dim' direction.
572	!------------------------------------------------------------------------------!
573	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
574	lb, ub )
575
576	IMPLICIT NONE
577
578	CHARACTER (LEN=2) :: dxyz_string !<
579	CHARACTER (LEN=2) :: nxyz_string !<
580
581	INTEGER(iwp) :: count !<
582	INTEGER(iwp) :: count_l !<
583	INTEGER(iwp) :: dim !<
584	INTEGER(iwp) :: m !<
585	INTEGER(iwp) :: loop_begin !<
586	INTEGER(iwp) :: loop_end !<
587	INTEGER(iwp) :: loop_stride !<
588	INTEGER(iwp) :: lb !<
589	INTEGER(iwp) :: nxyz !<
590	INTEGER(iwp) :: ub !<
591
592	REAL(wp) :: dxyz !<
593	REAL(wp) :: ddxyz !<
594	REAL(wp) :: tmp1 !<
595	REAL(wp) :: tmp2 !<
596
597	count = 0; count_l = 0
598	ddxyz = 1.0_wp / dxyz
599	tmp1 = 0.0_wp
600	tmp2 = 0.0_wp
601
602	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
603	!
604	!-- use predefined mask_* array
605	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
606	count = count + 1
607	IF ( dim == 1 .OR. dim == 2 ) THEN
608	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
609	IF ( m < 0 ) m = 0 ! avoid negative values
610	ELSEIF ( dim == 3 ) THEN
611	ind_array = &
612	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
613	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
614	ENDIF
615	IF ( m > (nxyz+1) ) THEN
616	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
617	m,' in mask ',mid,' along dimension ',dim, &
618	' exceeds (',nxyz_string,'+1) = ',nxyz+1
619	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
620	ENDIF
621	IF ( ( m >= lb .AND. m <= ub ) .OR. &
622	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
623	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
624	count_l = count_l + 1
625	IF ( dim == 1 ) THEN
626	mask_i(mid,count_l) = m
627	ELSEIF ( dim == 2 ) THEN
628	mask_j(mid,count_l) = m
629	ELSEIF ( dim == 3 ) THEN
630	mask_k(mid,count_l) = m
631	ENDIF
632	ENDIF
633	IF ( count == mask_xyz_dimension ) EXIT
634	ENDDO
635	mask_size(mid,dim) = count
636	mask_size_l(mid,dim) = count_l
637
638	ELSE
639	!
640	!-- use predefined mask_loop_* array, or use the default (all grid points
641	!-- along this direction)
642	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
643	tmp1 = mask_loop(mid,dim,1)
644	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
645	ENDIF
646	IF ( dim == 1 .OR. dim == 2 ) THEN
647	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
648	tmp2 = mask_loop(mid,dim,2)
649	mask_loop(mid,dim,2) = nxyz*dxyz / mask_scale(dim) ! (default)
650	ENDIF
651	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
652	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
653	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
654	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
655	' and/or mask_loop(',mid,',',dim,',2)=', &
656	mask_loop(mid,dim,2),' exceed (', &
657	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
658	(nxyz+1)*dxyz/mask_scale(dim)
659	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
660	ENDIF
661	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
662	* ddxyz - 0.5_wp )
663	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
664	* ddxyz - 0.5_wp )
665	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
666	* ddxyz )
667	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
668	ELSEIF ( dim == 3 ) THEN
669	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
670	tmp2 = mask_loop(mid,dim,2)
671	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
672	ENDIF
673	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
674	> zu(nz+1) / mask_scale(dim) ) THEN
675	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
676	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
677	' and/or mask_loop(',mid,',',dim,',2)=', &
678	mask_loop(mid,dim,2),' exceed zu(nz+1)/mask_scale(',dim, &
679	')=',zu(nz+1)/mask_scale(dim)
680	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
681	ENDIF
682	ind_array = &
683	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
684	loop_begin = &
685	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
686	ind_array = &
687	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
688	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
689	!
690	!-- The following line assumes a constant vertical grid spacing within
691	!-- the vertical mask range; it fails for vertical grid stretching.
692	!-- Maybe revise later. Issue warning but continue execution. ABS(...)
693	!-- within the IF statement is necessary because the default value of
694	!-- dz_stretch_level_start is -9999999.9_wp.
695	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
696
697	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > &
698	ABS( dz_stretch_level_start(1) ) ) THEN
699	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
700	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2), &
701	' exceeds dz_stretch_level=',dz_stretch_level_start(1), &
702	'.&Vertical mask locations will not ', &
703	'match the desired heights within the stretching ', &
704	'region.'
705	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
706	ENDIF
707
708	ENDIF
709	!
710	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
711	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
712	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
713	!
714	!-- The default stride +/-1 (every grid point) applies if
715	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
716	IF ( loop_stride == 0 ) THEN
717	IF ( loop_end >= loop_begin ) THEN
718	loop_stride = 1
719	ELSE
720	loop_stride = -1
721	ENDIF
722	ENDIF
723	DO m = loop_begin, loop_end, loop_stride
724	count = count + 1
725	IF ( ( m >= lb .AND. m <= ub ) .OR. &
726	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
727	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
728	count_l = count_l + 1
729	IF ( dim == 1 ) THEN
730	mask_i(mid,count_l) = m
731	ELSEIF ( dim == 2 ) THEN
732	mask_j(mid,count_l) = m
733	ELSEIF ( dim == 3 ) THEN
734	mask_k(mid,count_l) = m
735	ENDIF
736	ENDIF
737	ENDDO
738	mask_size(mid,dim) = count
739	mask_size_l(mid,dim) = count_l
740
741	ENDIF
742
743	END SUBROUTINE set_mask_locations
744
745	END SUBROUTINE init_masks

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