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source: palm/trunk/SOURCE/init_masks.f90 @ 4517

Last change on this file since 4517 was 4502, checked in by schwenkel, 5 years ago
Implementation of ice microphysics
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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 1997-2020 Leibniz Universitaet Hannover
18	!------------------------------------------------------------------------------!
19	!
20	! Current revisions:
21	! -----------------
22	!
23	!
24	! Former revisions:
25	! -----------------
26	! $Id: init_masks.f90 4502 2020-04-17 16:14:16Z raasch $
27	! Implementation of ice microphysics
28	!
29	! 4444 2020-03-05 15:59:50Z raasch
30	! bugfix: cpp-directives for serial mode added
31	!
32	! 4360 2020-01-07 11:25:50Z suehring
33	! Corrected "Former revisions" section
34	!
35	! 4069 2019-07-01 14:05:51Z Giersch
36	! Masked output running index mid has been introduced as a local variable to
37	! avoid runtime error (Loop variable has been modified) in time_integration
38	!
39	! 3766 2019-02-26 16:23:41Z raasch
40	! unused variables removed
41	!
42	! 3687 2019-01-22 10:42:06Z knoop
43	! unused variables removed
44	!
45	! 3655 2019-01-07 16:51:22Z knoop
46	! Move the control parameter "salsa" from salsa_mod to control_parameters
47	! (M. Kurppa)
48	!
49	! 410 2009-12-04 17:05:40Z letzel
50	! Initial revision
51	!
52	!
53	! Description:
54	! ------------
55	!> Initialize masked data output
56	!------------------------------------------------------------------------------!
57	SUBROUTINE init_masks
58
59	USE arrays_3d, &
60	ONLY: zu, zw
61
62	USE bulk_cloud_model_mod, &
63	ONLY: bulk_cloud_model, microphysics_morrison, microphysics_seifert, &
64	microphysics_ice_extension
65
66	USE control_parameters, &
67	ONLY: constant_diffusion, cloud_droplets, &
68	data_output_masks, data_output_masks_user, &
69	doav, doav_n, domask, domask_no, dz, dz_stretch_level_start, &
70	humidity, mask, masks, mask_scale, mask_i, &
71	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
72	mask_k_over_surface, &
73	mask_loop, mask_size, mask_size_l, mask_start_l, &
74	mask_surface, mask_x, &
75	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
76	mask_z_loop, max_masks, message_string, &
77	passive_scalar, ocean_mode, varnamelength
78
79	USE grid_variables, &
80	ONLY: dx, dy
81
82	USE indices, &
83	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
84
85	USE kinds
86
87	USE module_interface, &
88	ONLY: module_interface_init_masks
89
90	USE netcdf_interface, &
91	ONLY: domask_unit, netcdf_data_format
92
93	USE particle_attributes, &
94	ONLY: particle_advection
95
96	USE pegrid
97
98	IMPLICIT NONE
99
100	CHARACTER (LEN=varnamelength) :: var !< contains variable name
101	CHARACTER (LEN=7) :: unit !< contains unit of variable
102
103	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !< list of output variables
104	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !< list of user-specified output variables
105
106	INTEGER(iwp) :: count !< counting masking indices along a dimension
107	INTEGER(iwp) :: i !< loop index
108	INTEGER(iwp) :: ilen !< length of string saved in 'do_mask'
109	INTEGER(iwp) :: ind_array(1) !< array index
110	INTEGER(iwp) :: j !< loop index
111	INTEGER(iwp) :: k !< loop index
112	INTEGER(iwp) :: m !< mask index
113	INTEGER(iwp) :: mid !< masked output running index
114	#if defined( __parallel )
115	INTEGER(iwp) :: ind(6) !< index limits (lower/upper bounds) of output array
116	INTEGER(iwp) :: n !< loop index
117	INTEGER(iwp) :: sender !< PE id of sending PE
118	#endif
119
120	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !< temporary 1D array
121
122	LOGICAL :: found !< true if variable is found
123
124	!
125	!-- Initial values are explicitly set here due to a bug in the Cray compiler
126	!-- in case of assignments of initial values in declaration statements for
127	!-- arrays with more than 9999 elements (appears with -eD only)
128	domask = ' '
129
130	!
131	!-- Allocation and initialization
132	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
133
134	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
135	mask_j(max_masks,nyn-nys+2), &
136	mask_k(max_masks,nzt-nzb+2) )
137	!
138	!-- internal mask arrays ("mask,dimension,selection")
139	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
140	mask_loop(max_masks,3,3) )
141
142	!
143	!-- Parallel mask output not yet supported. In check_parameters data format
144	!-- is restricted and is switched back to non-parallel output. Therefore the
145	!-- following error can not occur at the moment.
146	IF ( netcdf_data_format > 4 ) THEN
147	message_string = 'netCDF file formats '// &
148	'5 and 6 (with parallel I/O support)'// &
149	' are currently not supported.'
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	!-- Flag a mask as terrain following
164	IF ( mask_k_over_surface(mid,1) /= -1_iwp ) THEN
165	mask_surface(mid) = .TRUE.
166	ENDIF
167
168	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
169	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
170	mask_loop(mid,1,1:2) = -1.0_wp
171	mask_loop(mid,1,3) = 0.0_wp
172	ELSE
173	mask_loop(mid,1,:) = mask_x_loop(mid,:)
174	ENDIF
175	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
176	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
177	mask_loop(mid,2,1:2) = -1.0_wp
178	mask_loop(mid,2,3) = 0.0_wp
179	ELSE
180	mask_loop(mid,2,:) = mask_y_loop(mid,:)
181	ENDIF
182	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
183	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
184	mask_loop(mid,3,1:2) = -1.0_wp
185	mask_loop(mid,3,3) = 0.0_wp
186	ELSE
187	mask_loop(mid,3,:) = mask_z_loop(mid,:)
188	ENDIF
189
190	ENDDO
191
192	mask_i = -1; mask_j = -1; mask_k = -1
193
194	!
195	!-- Global arrays are required by define_netcdf_header.
196	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
197	ALLOCATE( mask_i_global(max_masks,nx+2), &
198	mask_j_global(max_masks,ny+2), &
199	mask_k_global(max_masks,nz+2) )
200	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
201	ENDIF
202
203	!
204	!-- Determine variable names for each mask
205	DO mid = 1, masks
206	!
207	!-- Append user-defined data output variables to the standard data output
208	IF ( do_mask_user(mid,1) /= ' ' ) THEN
209	i = 1
210	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
211	i = i + 1
212	ENDDO
213	j = 1
214	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
215	IF ( i > 100 ) THEN
216	WRITE ( message_string, * ) 'number of output quantitities ', &
217	'given by data_output_mask and data_output_mask_user ', &
218	'exceeds the limit of 100'
219	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
220	ENDIF
221	do_mask(mid,i) = do_mask_user(mid,j)
222	i = i + 1
223	j = j + 1
224	ENDDO
225	ENDIF
226
227	!
228	!-- Check and set steering parameters for mask data output and averaging
229	i = 1
230	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
231	!
232	!-- Check for data averaging
233	ilen = LEN_TRIM( do_mask(mid,i) )
234	j = 0 ! no data averaging
235	IF ( ilen > 3 ) THEN
236	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
237	j = 1 ! data averaging
238	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
239	ENDIF
240	ENDIF
241	var = TRIM( do_mask(mid,i) )
242	!
243	!-- Check for allowed value and set units
244	SELECT CASE ( TRIM( var ) )
245
246	CASE ( 'e' )
247	IF ( constant_diffusion ) THEN
248	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
249	'" requires constant_diffusion = .FALSE.'
250	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
251	ENDIF
252	unit = 'm2/s2'
253
254	CASE ( 'thetal' )
255	IF ( .NOT. bulk_cloud_model ) THEN
256	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
257	'" requires bulk_cloud_model = .TRUE.'
258	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
259	ENDIF
260	unit = 'K'
261
262	CASE ( 'nc' )
263	IF ( .NOT. bulk_cloud_model ) THEN
264	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
265	'" requires bulk_cloud_model = .TRUE.'
266	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
267	ELSEIF ( .NOT. microphysics_morrison ) THEN
268	message_string = 'output of "' // TRIM( var ) // '" ' // &
269	'requires = morrison'
270	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
271	ENDIF
272	unit = '1/m3'
273
274	CASE ( 'ni' )
275	IF ( .NOT. bulk_cloud_model ) THEN
276	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
277	'" requires bulk_cloud_model = .TRUE.'
278	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
279	ELSEIF ( .NOT. microphysics_ice_extension ) THEN
280	message_string = 'output of "' // TRIM( var ) // '" ' // &
281	'requires microphysics_ice_extension = .TRUE.'
282	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
283	ENDIF
284	unit = '1/m3'
285
286	CASE ( 'nr' )
287	IF ( .NOT. bulk_cloud_model ) THEN
288	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
289	'" requires bulk_cloud_model = .TRUE.'
290	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
291	ELSEIF ( .NOT. microphysics_seifert ) THEN
292	message_string = 'output of "' // TRIM( var ) // '"' // &
293	'requires cloud_scheme = seifert_beheng'
294	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
295	ENDIF
296	unit = '1/m3'
297
298	CASE ( 'pc', 'pr' )
299	IF ( .NOT. particle_advection ) THEN
300	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
301	'" requires a "particles_par"-NAMELIST in the ', &
302	'parameter file (PARIN)'
303	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
304	ENDIF
305	IF ( TRIM( var ) == 'pc' ) unit = 'number'
306	IF ( TRIM( var ) == 'pr' ) unit = 'm'
307
308	CASE ( 'q', 'thetav' )
309	IF ( .NOT. humidity ) THEN
310	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
311	'" requires humidity = .TRUE.'
312	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
313	ENDIF
314	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
315	IF ( TRIM( var ) == 'thetav' ) unit = 'K'
316
317	CASE ( 'qc' )
318	IF ( .NOT. bulk_cloud_model ) THEN
319	message_string = 'output of "' // TRIM( var ) // '"' // &
320	'requires bulk_cloud_model = .TRUE.'
321	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
322	ENDIF
323	unit = 'kg/kg'
324
325	CASE ( 'ql' )
326	IF ( .NOT. ( bulk_cloud_model .OR. cloud_droplets ) ) THEN
327	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
328	'" requires bulk_cloud_model = .TRUE. or ', &
329	'cloud_droplets = .TRUE.'
330	CALL message( 'init_masks', 'PA0106', 1, 2, 0, 6, 0 )
331	ENDIF
332	unit = 'kg/kg'
333
334	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
335	IF ( .NOT. cloud_droplets ) THEN
336	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
337	'" requires cloud_droplets = .TRUE.'
338	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
339	ENDIF
340	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
341	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
342	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
343
344	CASE ( 'qv' )
345	IF ( .NOT. bulk_cloud_model ) THEN
346	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
347	'" requires bulk_cloud_model = .TRUE.'
348	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
349	ENDIF
350	unit = 'kg/kg'
351
352	CASE ( 'qi' )
353	IF ( .NOT. bulk_cloud_model ) THEN
354	message_string = 'output of "' // TRIM( var ) // '" ' // &
355	'requires bulk_cloud_model = .TRUE.'
356	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
357	ELSEIF ( .NOT. microphysics_ice_extension ) THEN
358	message_string = 'output of "' // TRIM( var ) // '" ' // &
359	'requires microphysics_ice_extension = .TRUE.'
360	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
361	ENDIF
362	unit = 'kg/kg'
363
364	CASE ( 'qr' )
365	IF ( .NOT. bulk_cloud_model ) THEN
366	message_string = 'output of "' // TRIM( var ) // '" ' // &
367	'requires bulk_cloud_model = .TRUE.'
368	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
369	ELSEIF ( .NOT. microphysics_seifert ) THEN
370	message_string = 'output of "' // TRIM( var ) // '" ' // &
371	'requires cloud_scheme = seifert_beheng'
372	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
373	ENDIF
374	unit = 'kg/kg'
375
376	CASE ( 'rho_sea_water' )
377	IF ( .NOT. ocean_mode ) THEN
378	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
379	'" requires ocean mode'
380	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
381	ENDIF
382	unit = 'kg/m3'
383
384	CASE ( 's' )
385	IF ( .NOT. passive_scalar ) THEN
386	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
387	'" requires passive_scalar = .TRUE.'
388	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
389	ENDIF
390	unit = 'conc'
391
392	CASE ( 'sa' )
393	IF ( .NOT. ocean_mode ) THEN
394	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
395	'" requires ocean mode'
396	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
397	ENDIF
398	unit = 'psu'
399
400	CASE ( 'us', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
401	WRITE ( message_string, * ) 'illegal value for data_', &
402	'output: "', TRIM( var ), '" is only allowed', &
403	'for horizontal cross section'
404	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
405
406	CASE ( 'p', 'theta', 'u', 'v', 'w' )
407	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
408	IF ( TRIM( var ) == 'theta' ) unit = 'K'
409	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
410	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
411	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
412	CONTINUE
413
414	CASE DEFAULT
415	!
416	!-- Allocate arrays for other modules
417	CALL module_interface_init_masks( var, unit )
418
419	IF ( unit == 'illegal' ) THEN
420	IF ( do_mask_user(mid,1) /= ' ' ) THEN
421	WRITE ( message_string, * ) 'illegal value for data_', &
422	'output_masks or data_output_masks_user: "', &
423	TRIM( do_mask(mid,i) ), '"'
424	CALL message( 'init_masks', 'PA0018', 1, 2, 0, 6, 0 )
425	ELSE
426	WRITE ( message_string, * ) 'illegal value for data_', &
427	' output_masks : "', TRIM( do_mask(mid,i) ), '"'
428	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
429	ENDIF
430	ENDIF
431
432	END SELECT
433	!
434	!-- Set the internal steering parameters appropriately
435	domask_no(mid,j) = domask_no(mid,j) + 1
436	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
437	domask_unit(mid,j,domask_no(mid,j)) = unit
438
439	IF ( j == 1 ) THEN
440	!
441	!-- Check, if variable is already subject to averaging
442	found = .FALSE.
443	DO k = 1, doav_n
444	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
445	ENDDO
446
447	IF ( .NOT. found ) THEN
448	doav_n = doav_n + 1
449	doav(doav_n) = var
450	ENDIF
451	ENDIF
452
453	i = i + 1
454
455	ENDDO ! do_mask(mid,i)
456	ENDDO ! mid
457
458
459	!
460	!-- Determine mask locations for each mask
461	DO mid = 1, masks
462	!
463	!-- Set local masks for each subdomain along all three dimensions
464	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
465	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
466	IF ( .NOT. mask_surface(mid) ) THEN
467	CALL set_mask_locations( 3, dz(1), 'dz', nz, 'nz', nzb, nzt )
468	ELSE
469	!
470	!-- Set vertical mask locations and size in case of terrain-following
471	!-- output
472	count = 0
473	DO WHILE ( mask_k_over_surface(mid, count+1) >= 0 )
474	m = mask_k_over_surface(mid, count+1)
475	IF ( m > nz+1 ) THEN
476	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
477	m,' in mask ',mid,' along dimension ', 3, &
478	' exceeds (nz+1) = ',nz+1
479	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
480	ENDIF
481	count = count + 1
482	mask_k(mid,count) = mask_k_over_surface(mid, count)
483	IF ( count == mask_xyz_dimension ) EXIT
484	ENDDO
485	mask_start_l(mid,3) = 1
486	mask_size(mid,3) = count
487	mask_size_l(mid,3) = count
488	ENDIF
489	!
490	!-- Set global masks along all three dimensions (required by
491	!-- define_netcdf_header).
492	#if defined( __parallel )
493	!
494	!-- PE0 receives partial arrays from all processors of the respective mask
495	!-- and outputs them. Here a barrier has to be set, because otherwise
496	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
497
498	CALL MPI_BARRIER( comm2d, ierr )
499
500	IF ( myid == 0 ) THEN
501	!
502	!-- Local arrays can be relocated directly.
503	mask_i_global(mid,mask_start_l(mid,1): &
504	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
505	mask_i(mid,:mask_size_l(mid,1))
506	mask_j_global(mid,mask_start_l(mid,2): &
507	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
508	mask_j(mid,:mask_size_l(mid,2))
509	mask_k_global(mid,mask_start_l(mid,3): &
510	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
511	mask_k(mid,:mask_size_l(mid,3))
512	!
513	!-- Receive data from all other PEs.
514	DO n = 1, numprocs-1
515	!
516	!-- Receive index limits first, then arrays.
517	!-- Index limits are received in arbitrary order from the PEs.
518	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
519	comm2d, status, ierr )
520	!
521	!-- Not all PEs have data for the mask.
522	IF ( ind(1) /= -9999 ) THEN
523	sender = status(MPI_SOURCE)
524	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
525	MPI_INTEGER, sender, 1, comm2d, status, ierr )
526	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
527	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
528	MPI_INTEGER, sender, 2, comm2d, status, ierr )
529	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
530	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
531	MPI_INTEGER, sender, 3, comm2d, status, ierr )
532	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
533	ENDIF
534	ENDDO
535
536	ELSE
537	!
538	!-- If at least part of the mask resides on the PE, send the index limits
539	!-- for the target array, otherwise send -9999 to PE0.
540	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
541	mask_size_l(mid,3) > 0 ) THEN
542	ind(1) = mask_start_l(mid,1)
543	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
544	ind(3) = mask_start_l(mid,2)
545	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
546	ind(5) = mask_start_l(mid,3)
547	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
548	ELSE
549	ind(1) = -9999; ind(2) = -9999
550	ind(3) = -9999; ind(4) = -9999
551	ind(5) = -9999; ind(6) = -9999
552	ENDIF
553	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
554	!
555	!-- If applicable, send data to PE0.
556	IF ( ind(1) /= -9999 ) THEN
557	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
558	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
559	MPI_INTEGER, 0, 1, comm2d, ierr )
560	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
561	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
562	MPI_INTEGER, 0, 2, comm2d, ierr )
563	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
564	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
565	MPI_INTEGER, 0, 3, comm2d, ierr )
566	ENDIF
567	ENDIF
568	!
569	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
570	!-- so that PE0 may receive wrong data on tag 0.
571	CALL MPI_BARRIER( comm2d, ierr )
572
573	IF ( netcdf_data_format > 4 ) THEN
574
575	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
576	ierr )
577	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
578	ierr )
579	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
580	ierr )
581
582	ENDIF
583
584	#else
585	!
586	!-- Local arrays can be relocated directly.
587	mask_i_global(mid,:) = mask_i(mid,:)
588	mask_j_global(mid,:) = mask_j(mid,:)
589	mask_k_global(mid,:) = mask_k(mid,:)
590	#endif
591	ENDDO ! mid
592
593	DEALLOCATE( tmp_array )
594	!
595	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
596	!-- required for header output on PE 0.
597	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
598
599	CONTAINS
600
601	!------------------------------------------------------------------------------!
602	! Description:
603	! ------------
604	!> Set local mask for each subdomain along 'dim' direction.
605	!------------------------------------------------------------------------------!
606	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
607	lb, ub )
608
609	IMPLICIT NONE
610
611	CHARACTER (LEN=2) :: dxyz_string !<
612	CHARACTER (LEN=2) :: nxyz_string !<
613
614	INTEGER(iwp) :: count !<
615	INTEGER(iwp) :: count_l !<
616	INTEGER(iwp) :: dim !<
617	INTEGER(iwp) :: m !<
618	INTEGER(iwp) :: loop_begin !<
619	INTEGER(iwp) :: loop_end !<
620	INTEGER(iwp) :: loop_stride !<
621	INTEGER(iwp) :: lb !<
622	INTEGER(iwp) :: nxyz !<
623	INTEGER(iwp) :: ub !<
624
625	REAL(wp) :: dxyz !<
626	REAL(wp) :: ddxyz !<
627	REAL(wp) :: tmp1 !<
628	REAL(wp) :: tmp2 !<
629
630	count = 0; count_l = 0
631	ddxyz = 1.0_wp / dxyz
632	tmp1 = 0.0_wp
633	tmp2 = 0.0_wp
634
635	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
636	!
637	!-- use predefined mask_* array
638	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
639	count = count + 1
640	IF ( dim == 1 .OR. dim == 2 ) THEN
641	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
642	IF ( m < 0 ) m = 0 ! avoid negative values
643	ELSEIF ( dim == 3 ) THEN
644	ind_array = &
645	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
646	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
647	ENDIF
648	IF ( m > (nxyz+1) ) THEN
649	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
650	m,' in mask ',mid,' along dimension ',dim, &
651	' exceeds (',nxyz_string,'+1) = ',nxyz+1
652	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
653	ENDIF
654	IF ( ( m >= lb .AND. m <= ub ) .OR. &
655	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
656	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
657	count_l = count_l + 1
658	IF ( dim == 1 ) THEN
659	mask_i(mid,count_l) = m
660	ELSEIF ( dim == 2 ) THEN
661	mask_j(mid,count_l) = m
662	ELSEIF ( dim == 3 ) THEN
663	mask_k(mid,count_l) = m
664	ENDIF
665	ENDIF
666	IF ( count == mask_xyz_dimension ) EXIT
667	ENDDO
668	mask_size(mid,dim) = count
669	mask_size_l(mid,dim) = count_l
670
671	ELSE
672	!
673	!-- use predefined mask_loop_* array, or use the default (all grid points
674	!-- along this direction)
675	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
676	tmp1 = mask_loop(mid,dim,1)
677	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
678	ENDIF
679	IF ( dim == 1 .OR. dim == 2 ) THEN
680	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
681	tmp2 = mask_loop(mid,dim,2)
682	mask_loop(mid,dim,2) = nxyz*dxyz / mask_scale(dim) ! (default)
683	ENDIF
684	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
685	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
686	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
687	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
688	' and/or mask_loop(',mid,',',dim,',2)=', &
689	mask_loop(mid,dim,2),' exceed (', &
690	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
691	(nxyz+1)*dxyz/mask_scale(dim)
692	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
693	ENDIF
694	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
695	* ddxyz - 0.5_wp )
696	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
697	* ddxyz - 0.5_wp )
698	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
699	* ddxyz )
700	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
701	ELSEIF ( dim == 3 ) THEN
702	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
703	tmp2 = mask_loop(mid,dim,2)
704	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
705	ENDIF
706	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
707	> zu(nz+1) / mask_scale(dim) ) THEN
708	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
709	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
710	' and/or mask_loop(',mid,',',dim,',2)=', &
711	mask_loop(mid,dim,2),' exceed zu(nz+1)/mask_scale(',dim, &
712	')=',zu(nz+1)/mask_scale(dim)
713	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
714	ENDIF
715	ind_array = &
716	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
717	loop_begin = &
718	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
719	ind_array = &
720	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
721	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
722	!
723	!-- The following line assumes a constant vertical grid spacing within
724	!-- the vertical mask range; it fails for vertical grid stretching.
725	!-- Maybe revise later. Issue warning but continue execution. ABS(...)
726	!-- within the IF statement is necessary because the default value of
727	!-- dz_stretch_level_start is -9999999.9_wp.
728	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
729
730	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > &
731	ABS( dz_stretch_level_start(1) ) ) THEN
732	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
733	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2), &
734	' exceeds dz_stretch_level=',dz_stretch_level_start(1), &
735	'.&Vertical mask locations will not ', &
736	'match the desired heights within the stretching ', &
737	'region.'
738	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
739	ENDIF
740
741	ENDIF
742	!
743	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
744	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
745	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
746	!
747	!-- The default stride +/-1 (every grid point) applies if
748	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
749	IF ( loop_stride == 0 ) THEN
750	IF ( loop_end >= loop_begin ) THEN
751	loop_stride = 1
752	ELSE
753	loop_stride = -1
754	ENDIF
755	ENDIF
756	DO m = loop_begin, loop_end, loop_stride
757	count = count + 1
758	IF ( ( m >= lb .AND. m <= ub ) .OR. &
759	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
760	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
761	count_l = count_l + 1
762	IF ( dim == 1 ) THEN
763	mask_i(mid,count_l) = m
764	ELSEIF ( dim == 2 ) THEN
765	mask_j(mid,count_l) = m
766	ELSEIF ( dim == 3 ) THEN
767	mask_k(mid,count_l) = m
768	ENDIF
769	ENDIF
770	ENDDO
771	mask_size(mid,dim) = count
772	mask_size_l(mid,dim) = count_l
773
774	ENDIF
775
776	END SUBROUTINE set_mask_locations
777
778	END SUBROUTINE init_masks

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