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source: palm/trunk/SOURCE/init_masks.f90 @ 2201

Last change on this file since 2201 was 2101, checked in by suehring, 8 years ago
last commit documented
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File size: 29.0 KB

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[1682]	1	!> @file init_masks.f90
[2000]	2	!------------------------------------------------------------------------------!
[1036]	3	! This file is part of PALM.
	4	!
[2000]	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.
[1036]	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	!
[2101]	17	! Copyright 1997-2017 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[484]	20	! Current revisions:
[298]	21	! -----------------
[1805]	22	!
[2032]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: init_masks.f90 2101 2017-01-05 16:42:31Z suehring $
	27	!
[2032]	28	! 2031 2016-10-21 15:11:58Z knoop
	29	! renamed variable rho to rho_ocean
	30	!
[2001]	31	! 2000 2016-08-20 18:09:15Z knoop
	32	! Forced header and separation lines into 80 columns
	33	!
[1823]	34	! 1822 2016-04-07 07:49:42Z hoffmann
	35	! icloud_scheme replaced by microphysics_*
	36	!
[1805]	37	! 1804 2016-04-05 16:30:18Z maronga
	38	! Removed code for parameter file check (__check)
	39	!
[1784]	40	! 1783 2016-03-06 18:36:17Z raasch
	41	! netcdf module name changed + related changes
	42	!
[1683]	43	! 1682 2015-10-07 23:56:08Z knoop
	44	! Code annotations made doxygen readable
	45	!
[1439]	46	! 1438 2014-07-22 14:14:06Z heinze
	47	! +nr, qc, qr
	48	!
[1415]	49	! 1414 2014-05-31 11:19:48Z gronemeier
	50	! Bugfix: first and last grid points as they appear in 3D volume data can now
	51	! be included to masked data output
	52	!
[1354]	53	! 1353 2014-04-08 15:21:23Z heinze
	54	! REAL constants provided with KIND-attribute
	55	!
[1325]	56	! 1324 2014-03-21 09:13:16Z suehring
	57	! Bugfix: ONLY statement for module netcdf_control removed
	58	!
[1321]	59	! 1320 2014-03-20 08:40:49Z raasch
[1320]	60	! ONLY-attribute added to USE-statements,
	61	! kind-parameters added to all INTEGER and REAL declaration statements,
	62	! kinds are defined in new module kinds,
	63	! revision history before 2012 removed,
	64	! comment fields (!:) to be used for variable explanations added to
	65	! all variable declaration statements
[298]	66	!
[1187]	67	! 1186 2013-06-18 06:22:52Z raasch
	68	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
	69	! because a zero value does not work in case of ocean runs
	70	!
[1037]	71	! 1036 2012-10-22 13:43:42Z raasch
	72	! code put under GPL (PALM 3.9)
	73	!
[1033]	74	! 1032 2012-10-21 13:03:21Z letzel
	75	! mask locations determined based on scalar positions
	76	!
[1035]	77	! 1031 2012-10-19 14:35:30Z raasch
	78	! netCDF4 without parallel file support implemented
	79	!
[997]	80	! 996 2012-09-07 10:41:47Z raasch
	81	! little reformatting
	82	!
[979]	83	! 978 2012-08-09 08:28:32Z fricke
	84	! +z0h*
	85	!
[810]	86	! 809 2012-01-30 13:32:58Z maronga
	87	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
	88	!
[808]	89	! 807 2012-01-25 11:53:51Z maronga
	90	! New cpp directive "__check" implemented which is used by check_namelist_files
	91	!
[449]	92	! 410 2009-12-04 17:05:40Z letzel
	93	! Initial revision
[298]	94	!
[449]	95	!
[298]	96	! Description:
	97	! ------------
[1682]	98	!> Initialize masked data output
[298]	99	!------------------------------------------------------------------------------!
[1682]	100	SUBROUTINE init_masks
[298]	101
[1320]	102	USE arrays_3d, &
	103	ONLY: zu, zw
	104
	105	USE control_parameters, &
	106	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
	107	data_output_masks, data_output_masks_user, &
	108	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
[1822]	109	mask, masks, mask_scale, mask_i, &
[1320]	110	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
	111	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
	112	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
	113	mask_z_loop, max_masks, message_string, mid, &
[1822]	114	microphysics_seifert, passive_scalar, ocean
[1320]	115
	116	USE grid_variables, &
	117	ONLY: dx, dy
	118
	119	USE indices, &
	120	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
	121
	122	USE kinds
	123
[1783]	124	USE netcdf_interface, &
	125	ONLY: domask_unit, netcdf_data_format
[1320]	126
	127	USE particle_attributes, &
	128	ONLY: particle_advection
	129
[298]	130	USE pegrid
	131
	132	IMPLICIT NONE
	133
[1682]	134	CHARACTER (LEN=6) :: var !<
	135	CHARACTER (LEN=7) :: unit !<
[1320]	136
[1682]	137	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask !<
	138	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask_user !<
[298]	139
[1682]	140	INTEGER(iwp) :: i !<
	141	INTEGER(iwp) :: ilen !<
	142	INTEGER(iwp) :: ind(6) !<
	143	INTEGER(iwp) :: ind_array(1) !<
	144	INTEGER(iwp) :: j !<
	145	INTEGER(iwp) :: k !<
	146	INTEGER(iwp) :: n !<
	147	INTEGER(iwp) :: sender !<
[1320]	148
[1682]	149	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
[298]	150
[1682]	151	LOGICAL :: found !<
[298]	152	!
	153	!-- Allocation and initialization
[1414]	154	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
[298]	155
[1414]	156	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
	157	mask_j(max_masks,nyn-nys+2), &
	158	mask_k(max_masks,nzt-nzb+2) )
[298]	159	!
	160	!-- internal mask arrays ("mask,dimension,selection")
	161	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	162	mask_loop(max_masks,3,3) )
[493]	163
[298]	164	!
[493]	165	!-- Parallel mask output not yet tested
[1031]	166	IF ( netcdf_data_format > 4 ) THEN
[996]	167	message_string = 'netCDF file formats '// &
	168	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
[493]	169	'&are currently not supported (not yet tested).'
[564]	170	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	171	ENDIF
[553]	172
[298]	173	!
	174	!-- Store data output parameters for masked data output in few shared arrays
[996]	175	DO mid = 1, masks
[564]	176
[553]	177	do_mask (mid,:) = data_output_masks(mid,:)
	178	do_mask_user(mid,:) = data_output_masks_user(mid,:)
	179	mask (mid,1,:) = mask_x(mid,:)
	180	mask (mid,2,:) = mask_y(mid,:)
	181	mask (mid,3,:) = mask_z(mid,:)
[564]	182
[1353]	183	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
	184	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
	185	mask_loop(mid,1,1:2) = -1.0_wp
	186	mask_loop(mid,1,3) = 0.0_wp
[564]	187	ELSE
	188	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	189	ENDIF
[1353]	190	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
	191	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
	192	mask_loop(mid,2,1:2) = -1.0_wp
	193	mask_loop(mid,2,3) = 0.0_wp
[564]	194	ELSE
	195	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	196	ENDIF
[1353]	197	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
	198	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
	199	mask_loop(mid,3,1:2) = -1.0_wp
	200	mask_loop(mid,3,3) = 0.0_wp
[564]	201	ELSE
	202	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	203	ENDIF
	204
[553]	205	ENDDO
	206
[298]	207	mask_i = -1; mask_j = -1; mask_k = -1
[553]	208
[298]	209	!
	210	!-- Global arrays are required by define_netcdf_header.
[1031]	211	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
[1414]	212	ALLOCATE( mask_i_global(max_masks,nx+2), &
	213	mask_j_global(max_masks,ny+2), &
	214	mask_k_global(max_masks,nz+2) )
[298]	215	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	216	ENDIF
	217
	218	!
	219	!-- Determine variable names for each mask
	220	DO mid = 1, masks
	221	!
	222	!-- Append user-defined data output variables to the standard data output
	223	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	224	i = 1
	225	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	226	i = i + 1
	227	ENDDO
	228	j = 1
	229	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	230	IF ( i > 100 ) THEN
	231	WRITE ( message_string, * ) 'number of output quantitities ', &
	232	'given by data_output_mask and data_output_mask_user ', &
	233	'exceeds the limit of 100'
[564]	234	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	235	ENDIF
	236	do_mask(mid,i) = do_mask_user(mid,j)
	237	i = i + 1
	238	j = j + 1
	239	ENDDO
	240	ENDIF
	241
	242	!
	243	!-- Check and set steering parameters for mask data output and averaging
	244	i = 1
[996]	245	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
[298]	246	!
	247	!-- Check for data averaging
	248	ilen = LEN_TRIM( do_mask(mid,i) )
	249	j = 0 ! no data averaging
	250	IF ( ilen > 3 ) THEN
	251	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	252	j = 1 ! data averaging
	253	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	254	ENDIF
	255	ENDIF
	256	var = TRIM( do_mask(mid,i) )
	257	!
	258	!-- Check for allowed value and set units
	259	SELECT CASE ( TRIM( var ) )
	260
	261	CASE ( 'e' )
	262	IF ( constant_diffusion ) THEN
	263	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	264	'" requires constant_diffusion = .FALSE.'
[564]	265	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	266	ENDIF
	267	unit = 'm2/s2'
	268
[771]	269	CASE ( 'lpt' )
	270	IF ( .NOT. cloud_physics ) THEN
	271	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	272	'" requires cloud_physics = .TRUE.'
[773]	273	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	274	ENDIF
	275	unit = 'K'
	276
[1438]	277	CASE ( 'nr' )
	278	IF ( .NOT. cloud_physics ) THEN
	279	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	280	'" requires cloud_physics = .TRUE.'
	281	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	282	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	283	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	284	'res cloud_scheme = seifert_beheng'
	285	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	286	ENDIF
	287	unit = '1/m3'
	288
[298]	289	CASE ( 'pc', 'pr' )
	290	IF ( .NOT. particle_advection ) THEN
	291	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	292	'" requires a "particles_par"-NAMELIST in the ', &
	293	'parameter file (PARIN)'
[564]	294	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	295	ENDIF
	296	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	297	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	298
	299	CASE ( 'q', 'vpt' )
	300	IF ( .NOT. humidity ) THEN
	301	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	302	'" requires humidity = .TRUE.'
[564]	303	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	304	ENDIF
	305	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
	306	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
	307
[1438]	308	CASE ( 'qc' )
	309	IF ( .NOT. cloud_physics ) THEN
	310	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	311	'res cloud_physics = .TRUE.'
	312	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
	313	ENDIF
	314	unit = 'kg/kg'
	315
[298]	316	CASE ( 'ql' )
	317	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
	318	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	319	'" requires cloud_physics = .TRUE. or cloud_droplets', &
	320	' = .TRUE.'
[564]	321	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	322	ENDIF
	323	unit = 'kg/kg'
	324
	325	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
	326	IF ( .NOT. cloud_droplets ) THEN
	327	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	328	'" requires cloud_droplets = .TRUE.'
[564]	329	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	330	ENDIF
	331	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	332	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	333	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	334
	335	CASE ( 'qv' )
	336	IF ( .NOT. cloud_physics ) THEN
	337	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	338	'" requires cloud_physics = .TRUE.'
[564]	339	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	340	ENDIF
	341	unit = 'kg/kg'
	342
[1438]	343	CASE ( 'qr' )
	344	IF ( .NOT. cloud_physics ) THEN
	345	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	346	'res cloud_physics = .TRUE.'
	347	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	348	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	349	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	350	'res cloud_scheme = seifert_beheng'
	351	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	352	ENDIF
	353	unit = 'kg/kg'
	354
[2031]	355	CASE ( 'rho_ocean' )
[298]	356	IF ( .NOT. ocean ) THEN
	357	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	358	'" requires ocean = .TRUE.'
[564]	359	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	360	ENDIF
	361	unit = 'kg/m3'
	362
	363	CASE ( 's' )
	364	IF ( .NOT. passive_scalar ) THEN
	365	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	366	'" requires passive_scalar = .TRUE.'
[564]	367	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	368	ENDIF
	369	unit = 'conc'
	370
	371	CASE ( 'sa' )
	372	IF ( .NOT. ocean ) THEN
	373	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	374	'" requires ocean = .TRUE.'
[564]	375	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	376	ENDIF
	377	unit = 'psu'
	378
[978]	379	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
[298]	380	WRITE ( message_string, * ) 'illegal value for data_',&
	381	'output: "', TRIM( var ), '" is only allowed', &
	382	'for horizontal cross section'
[564]	383	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	384
	385	CASE ( 'p', 'pt', 'u', 'v', 'w' )
	386	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
	387	IF ( TRIM( var ) == 'pt' ) unit = 'K'
	388	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	389	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	390	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	391	CONTINUE
	392
	393	CASE DEFAULT
	394	CALL user_check_data_output( var, unit )
	395
	396	IF ( unit == 'illegal' ) THEN
	397	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	398	WRITE ( message_string, * ) 'illegal value for data_',&
	399	'output or data_output_user: "', &
	400	TRIM( do_mask(mid,i) ), '"'
[564]	401	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
[298]	402	ELSE
	403	WRITE ( message_string, * ) 'illegal value for data_',&
	404	'output: "', TRIM( do_mask(mid,i) ), '"'
[564]	405	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	406	ENDIF
	407	ENDIF
	408
	409	END SELECT
	410	!
	411	!-- Set the internal steering parameters appropriately
	412	domask_no(mid,j) = domask_no(mid,j) + 1
	413	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	414	domask_unit(mid,j,domask_no(mid,j)) = unit
	415
	416	IF ( j == 1 ) THEN
	417	!
	418	!-- Check, if variable is already subject to averaging
	419	found = .FALSE.
	420	DO k = 1, doav_n
	421	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	422	ENDDO
	423
	424	IF ( .NOT. found ) THEN
	425	doav_n = doav_n + 1
	426	doav(doav_n) = var
	427	ENDIF
	428	ENDIF
	429
	430	i = i + 1
	431
	432	ENDDO ! do_mask(mid,i)
	433	ENDDO ! mid
	434
	435
	436	!
	437	!-- Determine mask locations for each mask
	438	DO mid = 1, masks
	439	!
	440	!-- Set local masks for each subdomain along all three dimensions
	441	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	442	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
	443	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
	444	!
	445	!-- Set global masks along all three dimensions (required by
	446	!-- define_netcdf_header).
[1804]	447	#if defined( __parallel )
[298]	448	!
	449	!-- PE0 receives partial arrays from all processors of the respective mask
	450	!-- and outputs them. Here a barrier has to be set, because otherwise
	451	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	452
[298]	453	CALL MPI_BARRIER( comm2d, ierr )
	454
	455	IF ( myid == 0 ) THEN
	456	!
	457	!-- Local arrays can be relocated directly.
	458	mask_i_global(mid,mask_start_l(mid,1): &
	459	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	460	mask_i(mid,:mask_size_l(mid,1))
	461	mask_j_global(mid,mask_start_l(mid,2): &
	462	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	463	mask_j(mid,:mask_size_l(mid,2))
	464	mask_k_global(mid,mask_start_l(mid,3): &
	465	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	466	mask_k(mid,:mask_size_l(mid,3))
	467	!
	468	!-- Receive data from all other PEs.
	469	DO n = 1, numprocs-1
	470	!
	471	!-- Receive index limits first, then arrays.
	472	!-- Index limits are received in arbitrary order from the PEs.
	473	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	474	comm2d, status, ierr )
	475	!
	476	!-- Not all PEs have data for the mask.
	477	IF ( ind(1) /= -9999 ) THEN
	478	sender = status(MPI_SOURCE)
	479	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	480	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	481	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	482	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	483	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	484	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	485	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	486	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	487	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	488	ENDIF
	489	ENDDO
	490
	491	ELSE
	492	!
	493	!-- If at least part of the mask resides on the PE, send the index limits
	494	!-- for the target array, otherwise send -9999 to PE0.
[996]	495	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	496	mask_size_l(mid,3) > 0 ) THEN
[298]	497	ind(1) = mask_start_l(mid,1)
	498	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	499	ind(3) = mask_start_l(mid,2)
	500	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	501	ind(5) = mask_start_l(mid,3)
	502	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	503	ELSE
	504	ind(1) = -9999; ind(2) = -9999
	505	ind(3) = -9999; ind(4) = -9999
	506	ind(5) = -9999; ind(6) = -9999
	507	ENDIF
	508	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	509	!
	510	!-- If applicable, send data to PE0.
	511	IF ( ind(1) /= -9999 ) THEN
	512	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	513	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	514	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	515	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	516	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	517	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	518	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	519	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	520	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	521	ENDIF
	522	ENDIF
	523	!
	524	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	525	!-- so that PE0 may receive wrong data on tag 0.
	526	CALL MPI_BARRIER( comm2d, ierr )
[409]	527
[1031]	528	IF ( netcdf_data_format > 4 ) THEN
[409]	529
[1414]	530	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
[493]	531	ierr )
[1414]	532	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
[493]	533	ierr )
[1414]	534	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
[493]	535	ierr )
[1682]	536
[409]	537	ENDIF
[298]	538
[1804]	539	#else
[298]	540	!
	541	!-- Local arrays can be relocated directly.
	542	mask_i_global(mid,:) = mask_i(mid,:)
	543	mask_j_global(mid,:) = mask_j(mid,:)
	544	mask_k_global(mid,:) = mask_k(mid,:)
	545	#endif
	546	ENDDO ! mid
	547
	548	DEALLOCATE( tmp_array )
	549	!
	550	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	551	!-- required for header output on PE 0.
	552	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	553
	554	CONTAINS
[493]	555
[298]	556	!------------------------------------------------------------------------------!
	557	! Description:
	558	! ------------
[1682]	559	!> Set local mask for each subdomain along 'dim' direction.
[298]	560	!------------------------------------------------------------------------------!
[1682]	561	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	562	lb, ub )
[298]	563
	564	IMPLICIT NONE
	565
[1682]	566	CHARACTER (LEN=2) :: dxyz_string !<
	567	CHARACTER (LEN=2) :: nxyz_string !<
[1320]	568
[1682]	569	INTEGER(iwp) :: count !<
	570	INTEGER(iwp) :: count_l !<
	571	INTEGER(iwp) :: dim !<
	572	INTEGER(iwp) :: m !<
	573	INTEGER(iwp) :: loop_begin !<
	574	INTEGER(iwp) :: loop_end !<
	575	INTEGER(iwp) :: loop_stride !<
	576	INTEGER(iwp) :: lb !<
	577	INTEGER(iwp) :: nxyz !<
	578	INTEGER(iwp) :: ub !<
[1320]	579
[1682]	580	REAL(wp) :: dxyz !<
	581	REAL(wp) :: ddxyz !<
	582	REAL(wp) :: tmp1 !<
	583	REAL(wp) :: tmp2 !<
[298]	584
[1353]	585	count = 0; count_l = 0
	586	ddxyz = 1.0_wp / dxyz
	587	tmp1 = 0.0_wp
	588	tmp2 = 0.0_wp
[298]	589
[1353]	590	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
[298]	591	!
	592	!-- use predefined mask_* array
[1353]	593	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
[298]	594	count = count + 1
	595	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	596	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
[1414]	597	IF ( m < 0 ) m = 0 ! avoid negative values
[298]	598	ELSEIF ( dim == 3 ) THEN
	599	ind_array = &
[595]	600	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	601	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	602	ENDIF
[1414]	603	IF ( m > (nxyz+1) ) THEN
[303]	604	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	605	m,' in mask ',mid,' along dimension ',dim, &
[1414]	606	' exceeds (',nxyz_string,'+1) = ',nxyz+1
[564]	607	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	608	ENDIF
[1414]	609	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	610	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	611	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	612	count_l = count_l + 1
	613	IF ( dim == 1 ) THEN
	614	mask_i(mid,count_l) = m
	615	ELSEIF ( dim == 2 ) THEN
	616	mask_j(mid,count_l) = m
	617	ELSEIF ( dim == 3 ) THEN
	618	mask_k(mid,count_l) = m
	619	ENDIF
	620	ENDIF
	621	IF ( count == mask_xyz_dimension ) EXIT
	622	ENDDO
	623	mask_size(mid,dim) = count
	624	mask_size_l(mid,dim) = count_l
	625
	626	ELSE
	627	!
	628	!-- use predefined mask_loop_* array, or use the default (all grid points
	629	!-- along this direction)
[1353]	630	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
[298]	631	tmp1 = mask_loop(mid,dim,1)
[1186]	632	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
[298]	633	ENDIF
	634	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	635	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	636	tmp2 = mask_loop(mid,dim,2)
[1414]	637	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
[298]	638	ENDIF
	639	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	640	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
[303]	641	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
	642	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	643	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	644	mask_loop(mid,dim,2),'&exceed (', &
	645	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
	646	(nxyz+1)*dxyz/mask_scale(dim)
[564]	647	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	648	ENDIF
[1032]	649	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
[1353]	650	* ddxyz - 0.5_wp )
[1032]	651	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
[1353]	652	* ddxyz - 0.5_wp )
[1032]	653	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
	654	* ddxyz )
[1414]	655	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
[298]	656	ELSEIF ( dim == 3 ) THEN
[1353]	657	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	658	tmp2 = mask_loop(mid,dim,2)
[1414]	659	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
[298]	660	ENDIF
	661	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	662	> zu(nz+1) / mask_scale(dim) ) THEN
[303]	663	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	664	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	665	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	666	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
	667	')=',zu(nz+1)/mask_scale(dim)
[564]	668	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	669	ENDIF
[303]	670	ind_array = &
[595]	671	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	672	loop_begin = &
[303]	673	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	674	ind_array = &
[595]	675	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	676	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	677	!
[303]	678	!-- The following line assumes a constant vertical grid spacing within
	679	!-- the vertical mask range; it fails for vertical grid stretching.
	680	!-- Maybe revise later. Issue warning but continue execution.
	681	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	682
	683	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
	684	THEN
[557]	685	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	686	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
[303]	687	' exceeds dz_stretch_level=',dz_stretch_level, &
	688	'.&Vertical mask locations will not ', &
	689	'match the desired heights&within the stretching ', &
	690	'region. Recommendation: use mask instead of mask_loop.'
[564]	691	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	692	ENDIF
	693
[298]	694	ENDIF
	695	!
	696	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
[1353]	697	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
	698	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
[298]	699	!
	700	!-- The default stride +/-1 (every grid point) applies if
	701	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	702	IF ( loop_stride == 0 ) THEN
	703	IF ( loop_end >= loop_begin ) THEN
	704	loop_stride = 1
	705	ELSE
	706	loop_stride = -1
	707	ENDIF
	708	ENDIF
	709	DO m = loop_begin, loop_end, loop_stride
	710	count = count + 1
[1414]	711	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	712	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	713	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	714	count_l = count_l + 1
	715	IF ( dim == 1 ) THEN
	716	mask_i(mid,count_l) = m
	717	ELSEIF ( dim == 2 ) THEN
	718	mask_j(mid,count_l) = m
	719	ELSEIF ( dim == 3 ) THEN
	720	mask_k(mid,count_l) = m
	721	ENDIF
	722	ENDIF
	723	ENDDO
	724	mask_size(mid,dim) = count
	725	mask_size_l(mid,dim) = count_l
[1414]	726
[298]	727	ENDIF
	728
	729	END SUBROUTINE set_mask_locations
	730
	731	END SUBROUTINE init_masks

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