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source: palm/trunk/SOURCE/init_masks.f90 @ 2284

Last change on this file since 2284 was 2271, checked in by sward, 8 years ago
error messages and numbers updated
Property svn:keywords set to `Id`
File size: 29.0 KB

Rev	Line
[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 2271 2017-06-09 12:34:55Z witha $
[2271]	27	! Changed error message
	28	!
	29	! 2101 2017-01-05 16:42:31Z suehring
[1321]	30	!
[2032]	31	! 2031 2016-10-21 15:11:58Z knoop
	32	! renamed variable rho to rho_ocean
	33	!
[2001]	34	! 2000 2016-08-20 18:09:15Z knoop
	35	! Forced header and separation lines into 80 columns
	36	!
[1823]	37	! 1822 2016-04-07 07:49:42Z hoffmann
	38	! icloud_scheme replaced by microphysics_*
	39	!
[1805]	40	! 1804 2016-04-05 16:30:18Z maronga
	41	! Removed code for parameter file check (__check)
	42	!
[1784]	43	! 1783 2016-03-06 18:36:17Z raasch
	44	! netcdf module name changed + related changes
	45	!
[1683]	46	! 1682 2015-10-07 23:56:08Z knoop
	47	! Code annotations made doxygen readable
	48	!
[1439]	49	! 1438 2014-07-22 14:14:06Z heinze
	50	! +nr, qc, qr
	51	!
[1415]	52	! 1414 2014-05-31 11:19:48Z gronemeier
	53	! Bugfix: first and last grid points as they appear in 3D volume data can now
	54	! be included to masked data output
	55	!
[1354]	56	! 1353 2014-04-08 15:21:23Z heinze
	57	! REAL constants provided with KIND-attribute
	58	!
[1325]	59	! 1324 2014-03-21 09:13:16Z suehring
	60	! Bugfix: ONLY statement for module netcdf_control removed
	61	!
[1321]	62	! 1320 2014-03-20 08:40:49Z raasch
[1320]	63	! ONLY-attribute added to USE-statements,
	64	! kind-parameters added to all INTEGER and REAL declaration statements,
	65	! kinds are defined in new module kinds,
	66	! revision history before 2012 removed,
	67	! comment fields (!:) to be used for variable explanations added to
	68	! all variable declaration statements
[298]	69	!
[1187]	70	! 1186 2013-06-18 06:22:52Z raasch
	71	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
	72	! because a zero value does not work in case of ocean runs
	73	!
[1037]	74	! 1036 2012-10-22 13:43:42Z raasch
	75	! code put under GPL (PALM 3.9)
	76	!
[1033]	77	! 1032 2012-10-21 13:03:21Z letzel
	78	! mask locations determined based on scalar positions
	79	!
[1035]	80	! 1031 2012-10-19 14:35:30Z raasch
	81	! netCDF4 without parallel file support implemented
	82	!
[997]	83	! 996 2012-09-07 10:41:47Z raasch
	84	! little reformatting
	85	!
[979]	86	! 978 2012-08-09 08:28:32Z fricke
	87	! +z0h*
	88	!
[810]	89	! 809 2012-01-30 13:32:58Z maronga
	90	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
	91	!
[808]	92	! 807 2012-01-25 11:53:51Z maronga
	93	! New cpp directive "__check" implemented which is used by check_namelist_files
	94	!
[449]	95	! 410 2009-12-04 17:05:40Z letzel
	96	! Initial revision
[298]	97	!
[449]	98	!
[298]	99	! Description:
	100	! ------------
[1682]	101	!> Initialize masked data output
[298]	102	!------------------------------------------------------------------------------!
[1682]	103	SUBROUTINE init_masks
[298]	104
[1320]	105	USE arrays_3d, &
	106	ONLY: zu, zw
	107
	108	USE control_parameters, &
	109	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
	110	data_output_masks, data_output_masks_user, &
	111	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
[1822]	112	mask, masks, mask_scale, mask_i, &
[1320]	113	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
	114	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
	115	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
	116	mask_z_loop, max_masks, message_string, mid, &
[1822]	117	microphysics_seifert, passive_scalar, ocean
[1320]	118
	119	USE grid_variables, &
	120	ONLY: dx, dy
	121
	122	USE indices, &
	123	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
	124
	125	USE kinds
	126
[1783]	127	USE netcdf_interface, &
	128	ONLY: domask_unit, netcdf_data_format
[1320]	129
	130	USE particle_attributes, &
	131	ONLY: particle_advection
	132
[298]	133	USE pegrid
	134
	135	IMPLICIT NONE
	136
[1682]	137	CHARACTER (LEN=6) :: var !<
	138	CHARACTER (LEN=7) :: unit !<
[1320]	139
[1682]	140	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask !<
	141	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask_user !<
[298]	142
[1682]	143	INTEGER(iwp) :: i !<
	144	INTEGER(iwp) :: ilen !<
	145	INTEGER(iwp) :: ind(6) !<
	146	INTEGER(iwp) :: ind_array(1) !<
	147	INTEGER(iwp) :: j !<
	148	INTEGER(iwp) :: k !<
	149	INTEGER(iwp) :: n !<
	150	INTEGER(iwp) :: sender !<
[1320]	151
[1682]	152	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
[298]	153
[1682]	154	LOGICAL :: found !<
[298]	155	!
	156	!-- Allocation and initialization
[1414]	157	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
[298]	158
[1414]	159	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
	160	mask_j(max_masks,nyn-nys+2), &
	161	mask_k(max_masks,nzt-nzb+2) )
[298]	162	!
	163	!-- internal mask arrays ("mask,dimension,selection")
	164	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	165	mask_loop(max_masks,3,3) )
[493]	166
[298]	167	!
[493]	168	!-- Parallel mask output not yet tested
[1031]	169	IF ( netcdf_data_format > 4 ) THEN
[996]	170	message_string = 'netCDF file formats '// &
	171	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
[493]	172	'&are currently not supported (not yet tested).'
[564]	173	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	174	ENDIF
[553]	175
[298]	176	!
	177	!-- Store data output parameters for masked data output in few shared arrays
[996]	178	DO mid = 1, masks
[564]	179
[553]	180	do_mask (mid,:) = data_output_masks(mid,:)
	181	do_mask_user(mid,:) = data_output_masks_user(mid,:)
	182	mask (mid,1,:) = mask_x(mid,:)
	183	mask (mid,2,:) = mask_y(mid,:)
	184	mask (mid,3,:) = mask_z(mid,:)
[564]	185
[1353]	186	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
	187	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
	188	mask_loop(mid,1,1:2) = -1.0_wp
	189	mask_loop(mid,1,3) = 0.0_wp
[564]	190	ELSE
	191	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	192	ENDIF
[1353]	193	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
	194	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
	195	mask_loop(mid,2,1:2) = -1.0_wp
	196	mask_loop(mid,2,3) = 0.0_wp
[564]	197	ELSE
	198	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	199	ENDIF
[1353]	200	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
	201	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
	202	mask_loop(mid,3,1:2) = -1.0_wp
	203	mask_loop(mid,3,3) = 0.0_wp
[564]	204	ELSE
	205	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	206	ENDIF
	207
[553]	208	ENDDO
	209
[298]	210	mask_i = -1; mask_j = -1; mask_k = -1
[553]	211
[298]	212	!
	213	!-- Global arrays are required by define_netcdf_header.
[1031]	214	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
[1414]	215	ALLOCATE( mask_i_global(max_masks,nx+2), &
	216	mask_j_global(max_masks,ny+2), &
	217	mask_k_global(max_masks,nz+2) )
[298]	218	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	219	ENDIF
	220
	221	!
	222	!-- Determine variable names for each mask
	223	DO mid = 1, masks
	224	!
	225	!-- Append user-defined data output variables to the standard data output
	226	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	227	i = 1
	228	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	229	i = i + 1
	230	ENDDO
	231	j = 1
	232	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	233	IF ( i > 100 ) THEN
	234	WRITE ( message_string, * ) 'number of output quantitities ', &
	235	'given by data_output_mask and data_output_mask_user ', &
	236	'exceeds the limit of 100'
[564]	237	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	238	ENDIF
	239	do_mask(mid,i) = do_mask_user(mid,j)
	240	i = i + 1
	241	j = j + 1
	242	ENDDO
	243	ENDIF
	244
	245	!
	246	!-- Check and set steering parameters for mask data output and averaging
	247	i = 1
[996]	248	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
[298]	249	!
	250	!-- Check for data averaging
	251	ilen = LEN_TRIM( do_mask(mid,i) )
	252	j = 0 ! no data averaging
	253	IF ( ilen > 3 ) THEN
	254	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	255	j = 1 ! data averaging
	256	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	257	ENDIF
	258	ENDIF
	259	var = TRIM( do_mask(mid,i) )
	260	!
	261	!-- Check for allowed value and set units
	262	SELECT CASE ( TRIM( var ) )
	263
	264	CASE ( 'e' )
	265	IF ( constant_diffusion ) THEN
	266	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	267	'" requires constant_diffusion = .FALSE.'
[564]	268	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	269	ENDIF
	270	unit = 'm2/s2'
	271
[771]	272	CASE ( 'lpt' )
	273	IF ( .NOT. cloud_physics ) THEN
	274	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	275	'" requires cloud_physics = .TRUE.'
[773]	276	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	277	ENDIF
	278	unit = 'K'
	279
[1438]	280	CASE ( 'nr' )
	281	IF ( .NOT. cloud_physics ) THEN
	282	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	283	'" requires cloud_physics = .TRUE.'
	284	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	285	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	286	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	287	'res cloud_scheme = seifert_beheng'
	288	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	289	ENDIF
	290	unit = '1/m3'
	291
[298]	292	CASE ( 'pc', 'pr' )
	293	IF ( .NOT. particle_advection ) THEN
	294	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	295	'" requires a "particles_par"-NAMELIST in the ', &
	296	'parameter file (PARIN)'
[564]	297	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	298	ENDIF
	299	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	300	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	301
	302	CASE ( 'q', 'vpt' )
	303	IF ( .NOT. humidity ) THEN
	304	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	305	'" requires humidity = .TRUE.'
[564]	306	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	307	ENDIF
	308	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
	309	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
	310
[1438]	311	CASE ( 'qc' )
	312	IF ( .NOT. cloud_physics ) THEN
	313	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	314	'res cloud_physics = .TRUE.'
	315	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
	316	ENDIF
	317	unit = 'kg/kg'
	318
[298]	319	CASE ( 'ql' )
	320	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
	321	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	322	'" requires cloud_physics = .TRUE. or cloud_droplets', &
	323	' = .TRUE.'
[564]	324	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	325	ENDIF
	326	unit = 'kg/kg'
	327
	328	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
	329	IF ( .NOT. cloud_droplets ) THEN
	330	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	331	'" requires cloud_droplets = .TRUE.'
[564]	332	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	333	ENDIF
	334	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	335	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	336	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	337
	338	CASE ( 'qv' )
	339	IF ( .NOT. cloud_physics ) THEN
	340	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	341	'" requires cloud_physics = .TRUE.'
[564]	342	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	343	ENDIF
	344	unit = 'kg/kg'
	345
[1438]	346	CASE ( 'qr' )
	347	IF ( .NOT. cloud_physics ) THEN
	348	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	349	'res cloud_physics = .TRUE.'
	350	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	351	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	352	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	353	'res cloud_scheme = seifert_beheng'
	354	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	355	ENDIF
	356	unit = 'kg/kg'
	357
[2031]	358	CASE ( 'rho_ocean' )
[298]	359	IF ( .NOT. ocean ) THEN
	360	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	361	'" requires ocean = .TRUE.'
[564]	362	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	363	ENDIF
	364	unit = 'kg/m3'
	365
	366	CASE ( 's' )
	367	IF ( .NOT. passive_scalar ) THEN
	368	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	369	'" requires passive_scalar = .TRUE.'
[564]	370	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	371	ENDIF
	372	unit = 'conc'
	373
	374	CASE ( 'sa' )
	375	IF ( .NOT. ocean ) THEN
	376	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	377	'" requires ocean = .TRUE.'
[564]	378	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	379	ENDIF
	380	unit = 'psu'
	381
[978]	382	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
[298]	383	WRITE ( message_string, * ) 'illegal value for data_',&
	384	'output: "', TRIM( var ), '" is only allowed', &
	385	'for horizontal cross section'
[564]	386	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	387
	388	CASE ( 'p', 'pt', 'u', 'v', 'w' )
	389	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
	390	IF ( TRIM( var ) == 'pt' ) unit = 'K'
	391	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	392	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	393	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	394	CONTINUE
	395
	396	CASE DEFAULT
	397	CALL user_check_data_output( var, unit )
	398
	399	IF ( unit == 'illegal' ) THEN
	400	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	401	WRITE ( message_string, * ) 'illegal value for data_',&
	402	'output or data_output_user: "', &
	403	TRIM( do_mask(mid,i) ), '"'
[564]	404	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
[298]	405	ELSE
	406	WRITE ( message_string, * ) 'illegal value for data_',&
	407	'output: "', TRIM( do_mask(mid,i) ), '"'
[564]	408	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	409	ENDIF
	410	ENDIF
	411
	412	END SELECT
	413	!
	414	!-- Set the internal steering parameters appropriately
	415	domask_no(mid,j) = domask_no(mid,j) + 1
	416	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	417	domask_unit(mid,j,domask_no(mid,j)) = unit
	418
	419	IF ( j == 1 ) THEN
	420	!
	421	!-- Check, if variable is already subject to averaging
	422	found = .FALSE.
	423	DO k = 1, doav_n
	424	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	425	ENDDO
	426
	427	IF ( .NOT. found ) THEN
	428	doav_n = doav_n + 1
	429	doav(doav_n) = var
	430	ENDIF
	431	ENDIF
	432
	433	i = i + 1
	434
	435	ENDDO ! do_mask(mid,i)
	436	ENDDO ! mid
	437
	438
	439	!
	440	!-- Determine mask locations for each mask
	441	DO mid = 1, masks
	442	!
	443	!-- Set local masks for each subdomain along all three dimensions
	444	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	445	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
	446	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
	447	!
	448	!-- Set global masks along all three dimensions (required by
	449	!-- define_netcdf_header).
[1804]	450	#if defined( __parallel )
[298]	451	!
	452	!-- PE0 receives partial arrays from all processors of the respective mask
	453	!-- and outputs them. Here a barrier has to be set, because otherwise
	454	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	455
[298]	456	CALL MPI_BARRIER( comm2d, ierr )
	457
	458	IF ( myid == 0 ) THEN
	459	!
	460	!-- Local arrays can be relocated directly.
	461	mask_i_global(mid,mask_start_l(mid,1): &
	462	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	463	mask_i(mid,:mask_size_l(mid,1))
	464	mask_j_global(mid,mask_start_l(mid,2): &
	465	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	466	mask_j(mid,:mask_size_l(mid,2))
	467	mask_k_global(mid,mask_start_l(mid,3): &
	468	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	469	mask_k(mid,:mask_size_l(mid,3))
	470	!
	471	!-- Receive data from all other PEs.
	472	DO n = 1, numprocs-1
	473	!
	474	!-- Receive index limits first, then arrays.
	475	!-- Index limits are received in arbitrary order from the PEs.
	476	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	477	comm2d, status, ierr )
	478	!
	479	!-- Not all PEs have data for the mask.
	480	IF ( ind(1) /= -9999 ) THEN
	481	sender = status(MPI_SOURCE)
	482	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	483	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	484	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	485	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	486	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	487	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	488	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	489	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	490	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	491	ENDIF
	492	ENDDO
	493
	494	ELSE
	495	!
	496	!-- If at least part of the mask resides on the PE, send the index limits
	497	!-- for the target array, otherwise send -9999 to PE0.
[996]	498	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	499	mask_size_l(mid,3) > 0 ) THEN
[298]	500	ind(1) = mask_start_l(mid,1)
	501	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	502	ind(3) = mask_start_l(mid,2)
	503	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	504	ind(5) = mask_start_l(mid,3)
	505	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	506	ELSE
	507	ind(1) = -9999; ind(2) = -9999
	508	ind(3) = -9999; ind(4) = -9999
	509	ind(5) = -9999; ind(6) = -9999
	510	ENDIF
	511	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	512	!
	513	!-- If applicable, send data to PE0.
	514	IF ( ind(1) /= -9999 ) THEN
	515	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	516	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	517	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	518	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	519	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	520	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	521	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	522	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	523	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	524	ENDIF
	525	ENDIF
	526	!
	527	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	528	!-- so that PE0 may receive wrong data on tag 0.
	529	CALL MPI_BARRIER( comm2d, ierr )
[409]	530
[1031]	531	IF ( netcdf_data_format > 4 ) THEN
[409]	532
[1414]	533	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
[493]	534	ierr )
[1414]	535	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
[493]	536	ierr )
[1414]	537	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
[493]	538	ierr )
[1682]	539
[409]	540	ENDIF
[298]	541
[1804]	542	#else
[298]	543	!
	544	!-- Local arrays can be relocated directly.
	545	mask_i_global(mid,:) = mask_i(mid,:)
	546	mask_j_global(mid,:) = mask_j(mid,:)
	547	mask_k_global(mid,:) = mask_k(mid,:)
	548	#endif
	549	ENDDO ! mid
	550
	551	DEALLOCATE( tmp_array )
	552	!
	553	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	554	!-- required for header output on PE 0.
	555	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	556
	557	CONTAINS
[493]	558
[298]	559	!------------------------------------------------------------------------------!
	560	! Description:
	561	! ------------
[1682]	562	!> Set local mask for each subdomain along 'dim' direction.
[298]	563	!------------------------------------------------------------------------------!
[1682]	564	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	565	lb, ub )
[298]	566
	567	IMPLICIT NONE
	568
[1682]	569	CHARACTER (LEN=2) :: dxyz_string !<
	570	CHARACTER (LEN=2) :: nxyz_string !<
[1320]	571
[1682]	572	INTEGER(iwp) :: count !<
	573	INTEGER(iwp) :: count_l !<
	574	INTEGER(iwp) :: dim !<
	575	INTEGER(iwp) :: m !<
	576	INTEGER(iwp) :: loop_begin !<
	577	INTEGER(iwp) :: loop_end !<
	578	INTEGER(iwp) :: loop_stride !<
	579	INTEGER(iwp) :: lb !<
	580	INTEGER(iwp) :: nxyz !<
	581	INTEGER(iwp) :: ub !<
[1320]	582
[1682]	583	REAL(wp) :: dxyz !<
	584	REAL(wp) :: ddxyz !<
	585	REAL(wp) :: tmp1 !<
	586	REAL(wp) :: tmp2 !<
[298]	587
[1353]	588	count = 0; count_l = 0
	589	ddxyz = 1.0_wp / dxyz
	590	tmp1 = 0.0_wp
	591	tmp2 = 0.0_wp
[298]	592
[1353]	593	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
[298]	594	!
	595	!-- use predefined mask_* array
[1353]	596	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
[298]	597	count = count + 1
	598	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	599	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
[1414]	600	IF ( m < 0 ) m = 0 ! avoid negative values
[298]	601	ELSEIF ( dim == 3 ) THEN
	602	ind_array = &
[595]	603	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	604	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	605	ENDIF
[1414]	606	IF ( m > (nxyz+1) ) THEN
[303]	607	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	608	m,' in mask ',mid,' along dimension ',dim, &
[1414]	609	' exceeds (',nxyz_string,'+1) = ',nxyz+1
[564]	610	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	611	ENDIF
[1414]	612	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	613	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	614	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	615	count_l = count_l + 1
	616	IF ( dim == 1 ) THEN
	617	mask_i(mid,count_l) = m
	618	ELSEIF ( dim == 2 ) THEN
	619	mask_j(mid,count_l) = m
	620	ELSEIF ( dim == 3 ) THEN
	621	mask_k(mid,count_l) = m
	622	ENDIF
	623	ENDIF
	624	IF ( count == mask_xyz_dimension ) EXIT
	625	ENDDO
	626	mask_size(mid,dim) = count
	627	mask_size_l(mid,dim) = count_l
	628
	629	ELSE
	630	!
	631	!-- use predefined mask_loop_* array, or use the default (all grid points
	632	!-- along this direction)
[1353]	633	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
[298]	634	tmp1 = mask_loop(mid,dim,1)
[1186]	635	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
[298]	636	ENDIF
	637	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	638	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	639	tmp2 = mask_loop(mid,dim,2)
[1414]	640	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
[298]	641	ENDIF
	642	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	643	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
[303]	644	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
	645	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	646	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	647	mask_loop(mid,dim,2),'&exceed (', &
	648	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
	649	(nxyz+1)*dxyz/mask_scale(dim)
[564]	650	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	651	ENDIF
[1032]	652	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
[1353]	653	* ddxyz - 0.5_wp )
[1032]	654	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
[1353]	655	* ddxyz - 0.5_wp )
[1032]	656	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
	657	* ddxyz )
[1414]	658	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
[298]	659	ELSEIF ( dim == 3 ) THEN
[1353]	660	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	661	tmp2 = mask_loop(mid,dim,2)
[1414]	662	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
[298]	663	ENDIF
	664	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	665	> zu(nz+1) / mask_scale(dim) ) THEN
[303]	666	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	667	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	668	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	669	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
	670	')=',zu(nz+1)/mask_scale(dim)
[564]	671	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	672	ENDIF
[303]	673	ind_array = &
[595]	674	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	675	loop_begin = &
[303]	676	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	677	ind_array = &
[595]	678	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	679	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	680	!
[303]	681	!-- The following line assumes a constant vertical grid spacing within
	682	!-- the vertical mask range; it fails for vertical grid stretching.
	683	!-- Maybe revise later. Issue warning but continue execution.
	684	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	685
	686	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
	687	THEN
[557]	688	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	689	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
[303]	690	' exceeds dz_stretch_level=',dz_stretch_level, &
	691	'.&Vertical mask locations will not ', &
	692	'match the desired heights&within the stretching ', &
[2271]	693	'region.'
[564]	694	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	695	ENDIF
	696
[298]	697	ENDIF
	698	!
	699	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
[1353]	700	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
	701	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
[298]	702	!
	703	!-- The default stride +/-1 (every grid point) applies if
	704	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	705	IF ( loop_stride == 0 ) THEN
	706	IF ( loop_end >= loop_begin ) THEN
	707	loop_stride = 1
	708	ELSE
	709	loop_stride = -1
	710	ENDIF
	711	ENDIF
	712	DO m = loop_begin, loop_end, loop_stride
	713	count = count + 1
[1414]	714	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	715	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	716	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	717	count_l = count_l + 1
	718	IF ( dim == 1 ) THEN
	719	mask_i(mid,count_l) = m
	720	ELSEIF ( dim == 2 ) THEN
	721	mask_j(mid,count_l) = m
	722	ELSEIF ( dim == 3 ) THEN
	723	mask_k(mid,count_l) = m
	724	ENDIF
	725	ENDIF
	726	ENDDO
	727	mask_size(mid,dim) = count
	728	mask_size_l(mid,dim) = count_l
[1414]	729
[298]	730	ENDIF
	731
	732	END SUBROUTINE set_mask_locations
	733
	734	END SUBROUTINE init_masks

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