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source: palm/trunk/SOURCE/init_masks.f90 @ 1445

Last change on this file since 1445 was 1439, checked in by heinze, 10 years ago
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[298]	1	SUBROUTINE init_masks
	2
[1036]	3	!--------------------------------------------------------------------------------!
	4	! This file is part of PALM.
	5	!
	6	! PALM is free software: you can redistribute it and/or modify it under the terms
	7	! of the GNU General Public License as published by the Free Software Foundation,
	8	! either version 3 of the License, or (at your option) any later version.
	9	!
	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANY
	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
[1310]	17	! Copyright 1997-2014 Leibniz Universitaet Hannover
[1036]	18	!--------------------------------------------------------------------------------!
	19	!
[484]	20	! Current revisions:
[298]	21	! -----------------
[1354]	22	!
[1439]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: init_masks.f90 1439 2014-07-22 14:16:14Z letzel $
	27	!
[1439]	28	! 1438 2014-07-22 14:14:06Z heinze
	29	! +nr, qc, qr
	30	!
[1415]	31	! 1414 2014-05-31 11:19:48Z gronemeier
	32	! Bugfix: first and last grid points as they appear in 3D volume data can now
	33	! be included to masked data output
	34	!
[1354]	35	! 1353 2014-04-08 15:21:23Z heinze
	36	! REAL constants provided with KIND-attribute
	37	!
[1325]	38	! 1324 2014-03-21 09:13:16Z suehring
	39	! Bugfix: ONLY statement for module netcdf_control removed
	40	!
[1321]	41	! 1320 2014-03-20 08:40:49Z raasch
[1320]	42	! ONLY-attribute added to USE-statements,
	43	! kind-parameters added to all INTEGER and REAL declaration statements,
	44	! kinds are defined in new module kinds,
	45	! revision history before 2012 removed,
	46	! comment fields (!:) to be used for variable explanations added to
	47	! all variable declaration statements
[298]	48	!
[1187]	49	! 1186 2013-06-18 06:22:52Z raasch
	50	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
	51	! because a zero value does not work in case of ocean runs
	52	!
[1037]	53	! 1036 2012-10-22 13:43:42Z raasch
	54	! code put under GPL (PALM 3.9)
	55	!
[1033]	56	! 1032 2012-10-21 13:03:21Z letzel
	57	! mask locations determined based on scalar positions
	58	!
[1035]	59	! 1031 2012-10-19 14:35:30Z raasch
	60	! netCDF4 without parallel file support implemented
	61	!
[997]	62	! 996 2012-09-07 10:41:47Z raasch
	63	! little reformatting
	64	!
[979]	65	! 978 2012-08-09 08:28:32Z fricke
	66	! +z0h*
	67	!
[810]	68	! 809 2012-01-30 13:32:58Z maronga
	69	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
	70	!
[808]	71	! 807 2012-01-25 11:53:51Z maronga
	72	! New cpp directive "__check" implemented which is used by check_namelist_files
	73	!
[449]	74	! 410 2009-12-04 17:05:40Z letzel
	75	! Initial revision
[298]	76	!
[449]	77	!
[298]	78	! Description:
	79	! ------------
	80	! Initialize masked data output
	81	!------------------------------------------------------------------------------!
	82
[1320]	83	USE arrays_3d, &
	84	ONLY: zu, zw
	85
	86	USE control_parameters, &
	87	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
	88	data_output_masks, data_output_masks_user, &
	89	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
[1438]	90	icloud_scheme, mask, masks, mask_scale, mask_i, &
[1320]	91	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
	92	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
	93	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
	94	mask_z_loop, max_masks, message_string, mid, &
[1438]	95	netcdf_data_format, passive_scalar, precipitation, ocean
[1320]	96
	97	USE grid_variables, &
	98	ONLY: dx, dy
	99
	100	USE indices, &
	101	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
	102
	103	USE kinds
	104
[1324]	105	USE netcdf_control
[1320]	106
	107	USE particle_attributes, &
	108	ONLY: particle_advection
	109
[298]	110	USE pegrid
	111
	112	IMPLICIT NONE
	113
[1320]	114	CHARACTER (LEN=6) :: var !:
	115	CHARACTER (LEN=7) :: unit !:
	116
	117	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask !:
	118	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask_user !:
[298]	119
[1320]	120	INTEGER(iwp) :: i !:
	121	INTEGER(iwp) :: ilen !:
	122	INTEGER(iwp) :: ind(6) !:
	123	INTEGER(iwp) :: ind_array(1) !:
	124	INTEGER(iwp) :: j !:
	125	INTEGER(iwp) :: k !:
	126	INTEGER(iwp) :: n !:
	127	INTEGER(iwp) :: sender !:
	128
	129	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !:
[298]	130
[1320]	131	LOGICAL :: found !:
[298]	132	!
	133	!-- Allocation and initialization
[1414]	134	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
[298]	135
[1414]	136	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
	137	mask_j(max_masks,nyn-nys+2), &
	138	mask_k(max_masks,nzt-nzb+2) )
[298]	139	!
	140	!-- internal mask arrays ("mask,dimension,selection")
	141	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	142	mask_loop(max_masks,3,3) )
[493]	143
[298]	144	!
[493]	145	!-- Parallel mask output not yet tested
[1031]	146	IF ( netcdf_data_format > 4 ) THEN
[996]	147	message_string = 'netCDF file formats '// &
	148	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
[493]	149	'&are currently not supported (not yet tested).'
[564]	150	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	151	ENDIF
[553]	152
[298]	153	!
	154	!-- Store data output parameters for masked data output in few shared arrays
[996]	155	DO mid = 1, masks
[564]	156
[553]	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,:)
[564]	162
[1353]	163	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
	164	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
	165	mask_loop(mid,1,1:2) = -1.0_wp
	166	mask_loop(mid,1,3) = 0.0_wp
[564]	167	ELSE
	168	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	169	ENDIF
[1353]	170	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
	171	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
	172	mask_loop(mid,2,1:2) = -1.0_wp
	173	mask_loop(mid,2,3) = 0.0_wp
[564]	174	ELSE
	175	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	176	ENDIF
[1353]	177	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
	178	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
	179	mask_loop(mid,3,1:2) = -1.0_wp
	180	mask_loop(mid,3,3) = 0.0_wp
[564]	181	ELSE
	182	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	183	ENDIF
	184
[553]	185	ENDDO
	186
[298]	187	mask_i = -1; mask_j = -1; mask_k = -1
[553]	188
[298]	189	!
	190	!-- Global arrays are required by define_netcdf_header.
[1031]	191	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
[1414]	192	ALLOCATE( mask_i_global(max_masks,nx+2), &
	193	mask_j_global(max_masks,ny+2), &
	194	mask_k_global(max_masks,nz+2) )
[298]	195	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	196	ENDIF
	197
	198	!
	199	!-- Determine variable names for each mask
	200	DO mid = 1, masks
	201	!
	202	!-- Append user-defined data output variables to the standard data output
	203	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	204	i = 1
	205	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	206	i = i + 1
	207	ENDDO
	208	j = 1
	209	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	210	IF ( i > 100 ) THEN
	211	WRITE ( message_string, * ) 'number of output quantitities ', &
	212	'given by data_output_mask and data_output_mask_user ', &
	213	'exceeds the limit of 100'
[564]	214	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	215	ENDIF
	216	do_mask(mid,i) = do_mask_user(mid,j)
	217	i = i + 1
	218	j = j + 1
	219	ENDDO
	220	ENDIF
	221
	222	!
	223	!-- Check and set steering parameters for mask data output and averaging
	224	i = 1
[996]	225	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
[298]	226	!
	227	!-- Check for data averaging
	228	ilen = LEN_TRIM( do_mask(mid,i) )
	229	j = 0 ! no data averaging
	230	IF ( ilen > 3 ) THEN
	231	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	232	j = 1 ! data averaging
	233	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	234	ENDIF
	235	ENDIF
	236	var = TRIM( do_mask(mid,i) )
	237	!
	238	!-- Check for allowed value and set units
	239	SELECT CASE ( TRIM( var ) )
	240
	241	CASE ( 'e' )
	242	IF ( constant_diffusion ) THEN
	243	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	244	'" requires constant_diffusion = .FALSE.'
[564]	245	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	246	ENDIF
	247	unit = 'm2/s2'
	248
[771]	249	CASE ( 'lpt' )
	250	IF ( .NOT. cloud_physics ) THEN
	251	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	252	'" requires cloud_physics = .TRUE.'
[773]	253	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	254	ENDIF
	255	unit = 'K'
	256
[1438]	257	CASE ( 'nr' )
	258	IF ( .NOT. cloud_physics ) THEN
	259	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	260	'" requires cloud_physics = .TRUE.'
	261	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
	262	ELSEIF ( icloud_scheme /= 0 ) THEN
	263	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	264	'res cloud_scheme = seifert_beheng'
	265	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	266	ELSEIF ( .NOT. precipitation ) THEN
	267	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	268	'res precipitation = .TRUE.'
	269	CALL message( 'check_parameters', 'PA0112', 1, 2, 0, 6, 0 )
	270	ENDIF
	271	unit = '1/m3'
	272
[298]	273	CASE ( 'pc', 'pr' )
	274	IF ( .NOT. particle_advection ) THEN
	275	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	276	'" requires a "particles_par"-NAMELIST in the ', &
	277	'parameter file (PARIN)'
[564]	278	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	279	ENDIF
	280	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	281	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	282
	283	CASE ( 'q', 'vpt' )
	284	IF ( .NOT. humidity ) THEN
	285	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	286	'" requires humidity = .TRUE.'
[564]	287	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	288	ENDIF
	289	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
	290	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
	291
[1438]	292	CASE ( 'qc' )
	293	IF ( .NOT. cloud_physics ) THEN
	294	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	295	'res cloud_physics = .TRUE.'
	296	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
	297	ELSEIF ( icloud_scheme /= 0 ) THEN
	298	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	299	'res cloud_scheme = seifert_beheng'
	300	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	301	ENDIF
	302	unit = 'kg/kg'
	303
[298]	304	CASE ( 'ql' )
	305	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
	306	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	307	'" requires cloud_physics = .TRUE. or cloud_droplets', &
	308	' = .TRUE.'
[564]	309	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	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.'
[564]	317	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	318	ENDIF
	319	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	320	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	321	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	322
	323	CASE ( 'qv' )
	324	IF ( .NOT. cloud_physics ) THEN
	325	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	326	'" requires cloud_physics = .TRUE.'
[564]	327	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	328	ENDIF
	329	unit = 'kg/kg'
	330
[1438]	331	CASE ( 'qr' )
	332	IF ( .NOT. cloud_physics ) THEN
	333	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	334	'res cloud_physics = .TRUE.'
	335	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
	336	ELSEIF ( icloud_scheme /= 0 ) THEN
	337	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	338	'res cloud_scheme = seifert_beheng'
	339	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	340	ELSEIF ( .NOT. precipitation ) THEN
	341	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	342	'res precipitation = .TRUE.'
	343	CALL message( 'check_parameters', 'PA0112', 1, 2, 0, 6, 0 )
	344	ENDIF
	345	unit = 'kg/kg'
	346
[298]	347	CASE ( 'rho' )
	348	IF ( .NOT. ocean ) THEN
	349	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	350	'" requires ocean = .TRUE.'
[564]	351	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	352	ENDIF
	353	unit = 'kg/m3'
	354
	355	CASE ( 's' )
	356	IF ( .NOT. passive_scalar ) THEN
	357	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	358	'" requires passive_scalar = .TRUE.'
[564]	359	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	360	ENDIF
	361	unit = 'conc'
	362
	363	CASE ( 'sa' )
	364	IF ( .NOT. ocean ) THEN
	365	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	366	'" requires ocean = .TRUE.'
[564]	367	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	368	ENDIF
	369	unit = 'psu'
	370
[978]	371	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
[298]	372	WRITE ( message_string, * ) 'illegal value for data_',&
	373	'output: "', TRIM( var ), '" is only allowed', &
	374	'for horizontal cross section'
[564]	375	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	376
	377	CASE ( 'p', 'pt', 'u', 'v', 'w' )
	378	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
	379	IF ( TRIM( var ) == 'pt' ) unit = 'K'
	380	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	381	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	382	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	383	CONTINUE
	384
	385	CASE DEFAULT
	386	CALL user_check_data_output( var, unit )
	387
	388	IF ( unit == 'illegal' ) THEN
	389	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	390	WRITE ( message_string, * ) 'illegal value for data_',&
	391	'output or data_output_user: "', &
	392	TRIM( do_mask(mid,i) ), '"'
[564]	393	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
[298]	394	ELSE
	395	WRITE ( message_string, * ) 'illegal value for data_',&
	396	'output: "', TRIM( do_mask(mid,i) ), '"'
[564]	397	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	398	ENDIF
	399	ENDIF
	400
	401	END SELECT
	402	!
	403	!-- Set the internal steering parameters appropriately
	404	domask_no(mid,j) = domask_no(mid,j) + 1
	405	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	406	domask_unit(mid,j,domask_no(mid,j)) = unit
	407
	408	IF ( j == 1 ) THEN
	409	!
	410	!-- Check, if variable is already subject to averaging
	411	found = .FALSE.
	412	DO k = 1, doav_n
	413	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	414	ENDDO
	415
	416	IF ( .NOT. found ) THEN
	417	doav_n = doav_n + 1
	418	doav(doav_n) = var
	419	ENDIF
	420	ENDIF
	421
	422	i = i + 1
	423
	424	ENDDO ! do_mask(mid,i)
	425	ENDDO ! mid
	426
	427
	428	!
	429	!-- Determine mask locations for each mask
	430	DO mid = 1, masks
	431	!
	432	!-- Set local masks for each subdomain along all three dimensions
	433	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	434	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
	435	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
	436	!
	437	!-- Set global masks along all three dimensions (required by
	438	!-- define_netcdf_header).
[809]	439	#if defined( __parallel ) && ! defined ( __check )
[298]	440	!
	441	!-- PE0 receives partial arrays from all processors of the respective mask
	442	!-- and outputs them. Here a barrier has to be set, because otherwise
	443	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	444
[298]	445	CALL MPI_BARRIER( comm2d, ierr )
	446
	447	IF ( myid == 0 ) THEN
	448	!
	449	!-- Local arrays can be relocated directly.
	450	mask_i_global(mid,mask_start_l(mid,1): &
	451	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	452	mask_i(mid,:mask_size_l(mid,1))
	453	mask_j_global(mid,mask_start_l(mid,2): &
	454	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	455	mask_j(mid,:mask_size_l(mid,2))
	456	mask_k_global(mid,mask_start_l(mid,3): &
	457	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	458	mask_k(mid,:mask_size_l(mid,3))
	459	!
	460	!-- Receive data from all other PEs.
	461	DO n = 1, numprocs-1
	462	!
	463	!-- Receive index limits first, then arrays.
	464	!-- Index limits are received in arbitrary order from the PEs.
	465	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	466	comm2d, status, ierr )
	467	!
	468	!-- Not all PEs have data for the mask.
	469	IF ( ind(1) /= -9999 ) THEN
	470	sender = status(MPI_SOURCE)
	471	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	472	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	473	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	474	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	475	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	476	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	477	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	478	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	479	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	480	ENDIF
	481	ENDDO
	482
	483	ELSE
	484	!
	485	!-- If at least part of the mask resides on the PE, send the index limits
	486	!-- for the target array, otherwise send -9999 to PE0.
[996]	487	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	488	mask_size_l(mid,3) > 0 ) THEN
[298]	489	ind(1) = mask_start_l(mid,1)
	490	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	491	ind(3) = mask_start_l(mid,2)
	492	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	493	ind(5) = mask_start_l(mid,3)
	494	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	495	ELSE
	496	ind(1) = -9999; ind(2) = -9999
	497	ind(3) = -9999; ind(4) = -9999
	498	ind(5) = -9999; ind(6) = -9999
	499	ENDIF
	500	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	501	!
	502	!-- If applicable, send data to PE0.
	503	IF ( ind(1) /= -9999 ) THEN
	504	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	505	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	506	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	507	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	508	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	509	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	510	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	511	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	512	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	513	ENDIF
	514	ENDIF
	515	!
	516	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	517	!-- so that PE0 may receive wrong data on tag 0.
	518	CALL MPI_BARRIER( comm2d, ierr )
[409]	519
[1031]	520	IF ( netcdf_data_format > 4 ) THEN
[409]	521
[1414]	522	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
[493]	523	ierr )
[1414]	524	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
[493]	525	ierr )
[1414]	526	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
[493]	527	ierr )
[409]	528
	529	ENDIF
[298]	530
[809]	531	#elif ! defined ( __parallel )
[298]	532	!
	533	!-- Local arrays can be relocated directly.
	534	mask_i_global(mid,:) = mask_i(mid,:)
	535	mask_j_global(mid,:) = mask_j(mid,:)
	536	mask_k_global(mid,:) = mask_k(mid,:)
	537	#endif
	538	ENDDO ! mid
	539
	540	DEALLOCATE( tmp_array )
	541	!
	542	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	543	!-- required for header output on PE 0.
	544	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	545
	546	CONTAINS
[493]	547
[298]	548	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	549	lb, ub )
	550	!------------------------------------------------------------------------------!
	551	!
	552	! Description:
	553	! ------------
	554	! Set local mask for each subdomain along 'dim' direction.
	555	!------------------------------------------------------------------------------!
	556
	557	IMPLICIT NONE
	558
[1320]	559	CHARACTER (LEN=2) :: dxyz_string !:
	560	CHARACTER (LEN=2) :: nxyz_string !:
	561
	562	INTEGER(iwp) :: count !:
	563	INTEGER(iwp) :: count_l !:
	564	INTEGER(iwp) :: dim !:
	565	INTEGER(iwp) :: m !:
	566	INTEGER(iwp) :: loop_begin !:
	567	INTEGER(iwp) :: loop_end !:
	568	INTEGER(iwp) :: loop_stride !:
	569	INTEGER(iwp) :: lb !:
	570	INTEGER(iwp) :: nxyz !:
	571	INTEGER(iwp) :: ub !:
	572
	573	REAL(wp) :: dxyz !:
	574	REAL(wp) :: ddxyz !:
	575	REAL(wp) :: tmp1 !:
	576	REAL(wp) :: tmp2 !:
[298]	577
[1353]	578	count = 0; count_l = 0
	579	ddxyz = 1.0_wp / dxyz
	580	tmp1 = 0.0_wp
	581	tmp2 = 0.0_wp
[298]	582
[1353]	583	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
[298]	584	!
	585	!-- use predefined mask_* array
[1353]	586	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
[298]	587	count = count + 1
	588	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	589	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
[1414]	590	IF ( m < 0 ) m = 0 ! avoid negative values
[298]	591	ELSEIF ( dim == 3 ) THEN
	592	ind_array = &
[595]	593	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	594	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	595	ENDIF
[1414]	596	IF ( m > (nxyz+1) ) THEN
[303]	597	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	598	m,' in mask ',mid,' along dimension ',dim, &
[1414]	599	' exceeds (',nxyz_string,'+1) = ',nxyz+1
[564]	600	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	601	ENDIF
[1414]	602	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	603	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	604	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	605	count_l = count_l + 1
	606	IF ( dim == 1 ) THEN
	607	mask_i(mid,count_l) = m
	608	ELSEIF ( dim == 2 ) THEN
	609	mask_j(mid,count_l) = m
	610	ELSEIF ( dim == 3 ) THEN
	611	mask_k(mid,count_l) = m
	612	ENDIF
	613	ENDIF
	614	IF ( count == mask_xyz_dimension ) EXIT
	615	ENDDO
	616	mask_size(mid,dim) = count
	617	mask_size_l(mid,dim) = count_l
	618
	619	ELSE
	620	!
	621	!-- use predefined mask_loop_* array, or use the default (all grid points
	622	!-- along this direction)
[1353]	623	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
[298]	624	tmp1 = mask_loop(mid,dim,1)
[1186]	625	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
[298]	626	ENDIF
	627	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	628	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	629	tmp2 = mask_loop(mid,dim,2)
[1414]	630	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
[298]	631	ENDIF
	632	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	633	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
[303]	634	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
	635	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	636	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	637	mask_loop(mid,dim,2),'&exceed (', &
	638	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
	639	(nxyz+1)*dxyz/mask_scale(dim)
[564]	640	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	641	ENDIF
[1032]	642	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
[1353]	643	* ddxyz - 0.5_wp )
[1032]	644	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
[1353]	645	* ddxyz - 0.5_wp )
[1032]	646	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
	647	* ddxyz )
[1414]	648	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
[298]	649	ELSEIF ( dim == 3 ) THEN
[1353]	650	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	651	tmp2 = mask_loop(mid,dim,2)
[1414]	652	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
[298]	653	ENDIF
	654	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	655	> zu(nz+1) / mask_scale(dim) ) THEN
[303]	656	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	657	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	658	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	659	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
	660	')=',zu(nz+1)/mask_scale(dim)
[564]	661	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	662	ENDIF
[303]	663	ind_array = &
[595]	664	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	665	loop_begin = &
[303]	666	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	667	ind_array = &
[595]	668	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	669	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	670	!
[303]	671	!-- The following line assumes a constant vertical grid spacing within
	672	!-- the vertical mask range; it fails for vertical grid stretching.
	673	!-- Maybe revise later. Issue warning but continue execution.
	674	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	675
	676	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
	677	THEN
[557]	678	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	679	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
[303]	680	' exceeds dz_stretch_level=',dz_stretch_level, &
	681	'.&Vertical mask locations will not ', &
	682	'match the desired heights&within the stretching ', &
	683	'region. Recommendation: use mask instead of mask_loop.'
[564]	684	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	685	ENDIF
	686
[298]	687	ENDIF
	688	!
	689	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
[1353]	690	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
	691	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
[298]	692	!
	693	!-- The default stride +/-1 (every grid point) applies if
	694	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	695	IF ( loop_stride == 0 ) THEN
	696	IF ( loop_end >= loop_begin ) THEN
	697	loop_stride = 1
	698	ELSE
	699	loop_stride = -1
	700	ENDIF
	701	ENDIF
	702	DO m = loop_begin, loop_end, loop_stride
	703	count = count + 1
[1414]	704	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	705	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	706	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	707	count_l = count_l + 1
	708	IF ( dim == 1 ) THEN
	709	mask_i(mid,count_l) = m
	710	ELSEIF ( dim == 2 ) THEN
	711	mask_j(mid,count_l) = m
	712	ELSEIF ( dim == 3 ) THEN
	713	mask_k(mid,count_l) = m
	714	ENDIF
	715	ENDIF
	716	ENDDO
	717	mask_size(mid,dim) = count
	718	mask_size_l(mid,dim) = count_l
[1414]	719
[298]	720	ENDIF
	721
	722	END SUBROUTINE set_mask_locations
	723
	724	END SUBROUTINE init_masks

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