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source: palm/trunk/SOURCE/init_masks.f90 @ 1423

Last change on this file since 1423 was 1415, checked in by gronemeier, 11 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	!
[1415]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: init_masks.f90 1415 2014-05-31 11:28:15Z kanani $
	27	!
[1415]	28	! 1414 2014-05-31 11:19:48Z gronemeier
	29	! Bugfix: first and last grid points as they appear in 3D volume data can now
	30	! be included to masked data output
	31	!
[1354]	32	! 1353 2014-04-08 15:21:23Z heinze
	33	! REAL constants provided with KIND-attribute
	34	!
[1325]	35	! 1324 2014-03-21 09:13:16Z suehring
	36	! Bugfix: ONLY statement for module netcdf_control removed
	37	!
[1321]	38	! 1320 2014-03-20 08:40:49Z raasch
[1320]	39	! ONLY-attribute added to USE-statements,
	40	! kind-parameters added to all INTEGER and REAL declaration statements,
	41	! kinds are defined in new module kinds,
	42	! revision history before 2012 removed,
	43	! comment fields (!:) to be used for variable explanations added to
	44	! all variable declaration statements
[298]	45	!
[1187]	46	! 1186 2013-06-18 06:22:52Z raasch
	47	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
	48	! because a zero value does not work in case of ocean runs
	49	!
[1037]	50	! 1036 2012-10-22 13:43:42Z raasch
	51	! code put under GPL (PALM 3.9)
	52	!
[1033]	53	! 1032 2012-10-21 13:03:21Z letzel
	54	! mask locations determined based on scalar positions
	55	!
[1035]	56	! 1031 2012-10-19 14:35:30Z raasch
	57	! netCDF4 without parallel file support implemented
	58	!
[997]	59	! 996 2012-09-07 10:41:47Z raasch
	60	! little reformatting
	61	!
[979]	62	! 978 2012-08-09 08:28:32Z fricke
	63	! +z0h*
	64	!
[810]	65	! 809 2012-01-30 13:32:58Z maronga
	66	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
	67	!
[808]	68	! 807 2012-01-25 11:53:51Z maronga
	69	! New cpp directive "__check" implemented which is used by check_namelist_files
	70	!
[449]	71	! 410 2009-12-04 17:05:40Z letzel
	72	! Initial revision
[298]	73	!
[449]	74	!
[298]	75	! Description:
	76	! ------------
	77	! Initialize masked data output
	78	!------------------------------------------------------------------------------!
	79
[1320]	80	USE arrays_3d, &
	81	ONLY: zu, zw
	82
	83	USE control_parameters, &
	84	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
	85	data_output_masks, data_output_masks_user, &
	86	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
	87	mask, masks, mask_scale, mask_i, &
	88	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
	89	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
	90	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
	91	mask_z_loop, max_masks, message_string, mid, &
	92	netcdf_data_format, passive_scalar, ocean
	93
	94	USE grid_variables, &
	95	ONLY: dx, dy
	96
	97	USE indices, &
	98	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
	99
	100	USE kinds
	101
[1324]	102	USE netcdf_control
[1320]	103
	104	USE particle_attributes, &
	105	ONLY: particle_advection
	106
[298]	107	USE pegrid
	108
	109	IMPLICIT NONE
	110
[1320]	111	CHARACTER (LEN=6) :: var !:
	112	CHARACTER (LEN=7) :: unit !:
	113
	114	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask !:
	115	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask_user !:
[298]	116
[1320]	117	INTEGER(iwp) :: i !:
	118	INTEGER(iwp) :: ilen !:
	119	INTEGER(iwp) :: ind(6) !:
	120	INTEGER(iwp) :: ind_array(1) !:
	121	INTEGER(iwp) :: j !:
	122	INTEGER(iwp) :: k !:
	123	INTEGER(iwp) :: n !:
	124	INTEGER(iwp) :: sender !:
	125
	126	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !:
[298]	127
[1320]	128	LOGICAL :: found !:
[298]	129	!
	130	!-- Allocation and initialization
[1414]	131	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
[298]	132
[1414]	133	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
	134	mask_j(max_masks,nyn-nys+2), &
	135	mask_k(max_masks,nzt-nzb+2) )
[298]	136	!
	137	!-- internal mask arrays ("mask,dimension,selection")
	138	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	139	mask_loop(max_masks,3,3) )
[493]	140
[298]	141	!
[493]	142	!-- Parallel mask output not yet tested
[1031]	143	IF ( netcdf_data_format > 4 ) THEN
[996]	144	message_string = 'netCDF file formats '// &
	145	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
[493]	146	'&are currently not supported (not yet tested).'
[564]	147	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	148	ENDIF
[553]	149
[298]	150	!
	151	!-- Store data output parameters for masked data output in few shared arrays
[996]	152	DO mid = 1, masks
[564]	153
[553]	154	do_mask (mid,:) = data_output_masks(mid,:)
	155	do_mask_user(mid,:) = data_output_masks_user(mid,:)
	156	mask (mid,1,:) = mask_x(mid,:)
	157	mask (mid,2,:) = mask_y(mid,:)
	158	mask (mid,3,:) = mask_z(mid,:)
[564]	159
[1353]	160	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
	161	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
	162	mask_loop(mid,1,1:2) = -1.0_wp
	163	mask_loop(mid,1,3) = 0.0_wp
[564]	164	ELSE
	165	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	166	ENDIF
[1353]	167	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
	168	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
	169	mask_loop(mid,2,1:2) = -1.0_wp
	170	mask_loop(mid,2,3) = 0.0_wp
[564]	171	ELSE
	172	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	173	ENDIF
[1353]	174	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
	175	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
	176	mask_loop(mid,3,1:2) = -1.0_wp
	177	mask_loop(mid,3,3) = 0.0_wp
[564]	178	ELSE
	179	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	180	ENDIF
	181
[553]	182	ENDDO
	183
[298]	184	mask_i = -1; mask_j = -1; mask_k = -1
[553]	185
[298]	186	!
	187	!-- Global arrays are required by define_netcdf_header.
[1031]	188	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
[1414]	189	ALLOCATE( mask_i_global(max_masks,nx+2), &
	190	mask_j_global(max_masks,ny+2), &
	191	mask_k_global(max_masks,nz+2) )
[298]	192	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	193	ENDIF
	194
	195	!
	196	!-- Determine variable names for each mask
	197	DO mid = 1, masks
	198	!
	199	!-- Append user-defined data output variables to the standard data output
	200	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	201	i = 1
	202	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	203	i = i + 1
	204	ENDDO
	205	j = 1
	206	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	207	IF ( i > 100 ) THEN
	208	WRITE ( message_string, * ) 'number of output quantitities ', &
	209	'given by data_output_mask and data_output_mask_user ', &
	210	'exceeds the limit of 100'
[564]	211	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	212	ENDIF
	213	do_mask(mid,i) = do_mask_user(mid,j)
	214	i = i + 1
	215	j = j + 1
	216	ENDDO
	217	ENDIF
	218
	219	!
	220	!-- Check and set steering parameters for mask data output and averaging
	221	i = 1
[996]	222	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
[298]	223	!
	224	!-- Check for data averaging
	225	ilen = LEN_TRIM( do_mask(mid,i) )
	226	j = 0 ! no data averaging
	227	IF ( ilen > 3 ) THEN
	228	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	229	j = 1 ! data averaging
	230	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	231	ENDIF
	232	ENDIF
	233	var = TRIM( do_mask(mid,i) )
	234	!
	235	!-- Check for allowed value and set units
	236	SELECT CASE ( TRIM( var ) )
	237
	238	CASE ( 'e' )
	239	IF ( constant_diffusion ) THEN
	240	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	241	'" requires constant_diffusion = .FALSE.'
[564]	242	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	243	ENDIF
	244	unit = 'm2/s2'
	245
[771]	246	CASE ( 'lpt' )
	247	IF ( .NOT. cloud_physics ) THEN
	248	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	249	'" requires cloud_physics = .TRUE.'
[773]	250	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	251	ENDIF
	252	unit = 'K'
	253
[298]	254	CASE ( 'pc', 'pr' )
	255	IF ( .NOT. particle_advection ) THEN
	256	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	257	'" requires a "particles_par"-NAMELIST in the ', &
	258	'parameter file (PARIN)'
[564]	259	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	260	ENDIF
	261	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	262	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	263
	264	CASE ( 'q', 'vpt' )
	265	IF ( .NOT. humidity ) THEN
	266	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	267	'" requires humidity = .TRUE.'
[564]	268	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	269	ENDIF
	270	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
	271	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
	272
	273	CASE ( 'ql' )
	274	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
	275	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	276	'" requires cloud_physics = .TRUE. or cloud_droplets', &
	277	' = .TRUE.'
[564]	278	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	279	ENDIF
	280	unit = 'kg/kg'
	281
	282	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
	283	IF ( .NOT. cloud_droplets ) THEN
	284	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	285	'" requires cloud_droplets = .TRUE.'
[564]	286	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	287	ENDIF
	288	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	289	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	290	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	291
	292	CASE ( 'qv' )
	293	IF ( .NOT. cloud_physics ) THEN
	294	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	295	'" requires cloud_physics = .TRUE.'
[564]	296	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	297	ENDIF
	298	unit = 'kg/kg'
	299
	300	CASE ( 'rho' )
	301	IF ( .NOT. ocean ) THEN
	302	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	303	'" requires ocean = .TRUE.'
[564]	304	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	305	ENDIF
	306	unit = 'kg/m3'
	307
	308	CASE ( 's' )
	309	IF ( .NOT. passive_scalar ) THEN
	310	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	311	'" requires passive_scalar = .TRUE.'
[564]	312	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	313	ENDIF
	314	unit = 'conc'
	315
	316	CASE ( 'sa' )
	317	IF ( .NOT. ocean ) THEN
	318	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	319	'" requires ocean = .TRUE.'
[564]	320	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	321	ENDIF
	322	unit = 'psu'
	323
[978]	324	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
[298]	325	WRITE ( message_string, * ) 'illegal value for data_',&
	326	'output: "', TRIM( var ), '" is only allowed', &
	327	'for horizontal cross section'
[564]	328	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	329
	330	CASE ( 'p', 'pt', 'u', 'v', 'w' )
	331	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
	332	IF ( TRIM( var ) == 'pt' ) unit = 'K'
	333	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	334	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	335	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	336	CONTINUE
	337
	338	CASE DEFAULT
	339	CALL user_check_data_output( var, unit )
	340
	341	IF ( unit == 'illegal' ) THEN
	342	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	343	WRITE ( message_string, * ) 'illegal value for data_',&
	344	'output or data_output_user: "', &
	345	TRIM( do_mask(mid,i) ), '"'
[564]	346	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
[298]	347	ELSE
	348	WRITE ( message_string, * ) 'illegal value for data_',&
	349	'output: "', TRIM( do_mask(mid,i) ), '"'
[564]	350	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	351	ENDIF
	352	ENDIF
	353
	354	END SELECT
	355	!
	356	!-- Set the internal steering parameters appropriately
	357	domask_no(mid,j) = domask_no(mid,j) + 1
	358	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	359	domask_unit(mid,j,domask_no(mid,j)) = unit
	360
	361	IF ( j == 1 ) THEN
	362	!
	363	!-- Check, if variable is already subject to averaging
	364	found = .FALSE.
	365	DO k = 1, doav_n
	366	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	367	ENDDO
	368
	369	IF ( .NOT. found ) THEN
	370	doav_n = doav_n + 1
	371	doav(doav_n) = var
	372	ENDIF
	373	ENDIF
	374
	375	i = i + 1
	376
	377	ENDDO ! do_mask(mid,i)
	378	ENDDO ! mid
	379
	380
	381	!
	382	!-- Determine mask locations for each mask
	383	DO mid = 1, masks
	384	!
	385	!-- Set local masks for each subdomain along all three dimensions
	386	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	387	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
	388	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
	389	!
	390	!-- Set global masks along all three dimensions (required by
	391	!-- define_netcdf_header).
[809]	392	#if defined( __parallel ) && ! defined ( __check )
[298]	393	!
	394	!-- PE0 receives partial arrays from all processors of the respective mask
	395	!-- and outputs them. Here a barrier has to be set, because otherwise
	396	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	397
[298]	398	CALL MPI_BARRIER( comm2d, ierr )
	399
	400	IF ( myid == 0 ) THEN
	401	!
	402	!-- Local arrays can be relocated directly.
	403	mask_i_global(mid,mask_start_l(mid,1): &
	404	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	405	mask_i(mid,:mask_size_l(mid,1))
	406	mask_j_global(mid,mask_start_l(mid,2): &
	407	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	408	mask_j(mid,:mask_size_l(mid,2))
	409	mask_k_global(mid,mask_start_l(mid,3): &
	410	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	411	mask_k(mid,:mask_size_l(mid,3))
	412	!
	413	!-- Receive data from all other PEs.
	414	DO n = 1, numprocs-1
	415	!
	416	!-- Receive index limits first, then arrays.
	417	!-- Index limits are received in arbitrary order from the PEs.
	418	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	419	comm2d, status, ierr )
	420	!
	421	!-- Not all PEs have data for the mask.
	422	IF ( ind(1) /= -9999 ) THEN
	423	sender = status(MPI_SOURCE)
	424	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	425	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	426	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	427	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	428	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	429	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	430	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	431	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	432	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	433	ENDIF
	434	ENDDO
	435
	436	ELSE
	437	!
	438	!-- If at least part of the mask resides on the PE, send the index limits
	439	!-- for the target array, otherwise send -9999 to PE0.
[996]	440	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	441	mask_size_l(mid,3) > 0 ) THEN
[298]	442	ind(1) = mask_start_l(mid,1)
	443	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	444	ind(3) = mask_start_l(mid,2)
	445	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	446	ind(5) = mask_start_l(mid,3)
	447	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	448	ELSE
	449	ind(1) = -9999; ind(2) = -9999
	450	ind(3) = -9999; ind(4) = -9999
	451	ind(5) = -9999; ind(6) = -9999
	452	ENDIF
	453	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	454	!
	455	!-- If applicable, send data to PE0.
	456	IF ( ind(1) /= -9999 ) THEN
	457	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	458	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	459	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	460	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	461	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	462	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	463	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	464	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	465	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	466	ENDIF
	467	ENDIF
	468	!
	469	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	470	!-- so that PE0 may receive wrong data on tag 0.
	471	CALL MPI_BARRIER( comm2d, ierr )
[409]	472
[1031]	473	IF ( netcdf_data_format > 4 ) THEN
[409]	474
[1414]	475	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
[493]	476	ierr )
[1414]	477	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
[493]	478	ierr )
[1414]	479	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
[493]	480	ierr )
[409]	481
	482	ENDIF
[298]	483
[809]	484	#elif ! defined ( __parallel )
[298]	485	!
	486	!-- Local arrays can be relocated directly.
	487	mask_i_global(mid,:) = mask_i(mid,:)
	488	mask_j_global(mid,:) = mask_j(mid,:)
	489	mask_k_global(mid,:) = mask_k(mid,:)
	490	#endif
	491	ENDDO ! mid
	492
	493	DEALLOCATE( tmp_array )
	494	!
	495	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	496	!-- required for header output on PE 0.
	497	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	498
	499	CONTAINS
[493]	500
[298]	501	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	502	lb, ub )
	503	!------------------------------------------------------------------------------!
	504	!
	505	! Description:
	506	! ------------
	507	! Set local mask for each subdomain along 'dim' direction.
	508	!------------------------------------------------------------------------------!
	509
	510	IMPLICIT NONE
	511
[1320]	512	CHARACTER (LEN=2) :: dxyz_string !:
	513	CHARACTER (LEN=2) :: nxyz_string !:
	514
	515	INTEGER(iwp) :: count !:
	516	INTEGER(iwp) :: count_l !:
	517	INTEGER(iwp) :: dim !:
	518	INTEGER(iwp) :: m !:
	519	INTEGER(iwp) :: loop_begin !:
	520	INTEGER(iwp) :: loop_end !:
	521	INTEGER(iwp) :: loop_stride !:
	522	INTEGER(iwp) :: lb !:
	523	INTEGER(iwp) :: nxyz !:
	524	INTEGER(iwp) :: ub !:
	525
	526	REAL(wp) :: dxyz !:
	527	REAL(wp) :: ddxyz !:
	528	REAL(wp) :: tmp1 !:
	529	REAL(wp) :: tmp2 !:
[298]	530
[1353]	531	count = 0; count_l = 0
	532	ddxyz = 1.0_wp / dxyz
	533	tmp1 = 0.0_wp
	534	tmp2 = 0.0_wp
[298]	535
[1353]	536	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
[298]	537	!
	538	!-- use predefined mask_* array
[1353]	539	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
[298]	540	count = count + 1
	541	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	542	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
[1414]	543	IF ( m < 0 ) m = 0 ! avoid negative values
[298]	544	ELSEIF ( dim == 3 ) THEN
	545	ind_array = &
[595]	546	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	547	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	548	ENDIF
[1414]	549	IF ( m > (nxyz+1) ) THEN
[303]	550	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	551	m,' in mask ',mid,' along dimension ',dim, &
[1414]	552	' exceeds (',nxyz_string,'+1) = ',nxyz+1
[564]	553	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	554	ENDIF
[1414]	555	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	556	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	557	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	558	count_l = count_l + 1
	559	IF ( dim == 1 ) THEN
	560	mask_i(mid,count_l) = m
	561	ELSEIF ( dim == 2 ) THEN
	562	mask_j(mid,count_l) = m
	563	ELSEIF ( dim == 3 ) THEN
	564	mask_k(mid,count_l) = m
	565	ENDIF
	566	ENDIF
	567	IF ( count == mask_xyz_dimension ) EXIT
	568	ENDDO
	569	mask_size(mid,dim) = count
	570	mask_size_l(mid,dim) = count_l
	571
	572	ELSE
	573	!
	574	!-- use predefined mask_loop_* array, or use the default (all grid points
	575	!-- along this direction)
[1353]	576	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
[298]	577	tmp1 = mask_loop(mid,dim,1)
[1186]	578	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
[298]	579	ENDIF
	580	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	581	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	582	tmp2 = mask_loop(mid,dim,2)
[1414]	583	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
[298]	584	ENDIF
	585	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	586	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
[303]	587	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
	588	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	589	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	590	mask_loop(mid,dim,2),'&exceed (', &
	591	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
	592	(nxyz+1)*dxyz/mask_scale(dim)
[564]	593	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	594	ENDIF
[1032]	595	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
[1353]	596	* ddxyz - 0.5_wp )
[1032]	597	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
[1353]	598	* ddxyz - 0.5_wp )
[1032]	599	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
	600	* ddxyz )
[1414]	601	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
[298]	602	ELSEIF ( dim == 3 ) THEN
[1353]	603	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	604	tmp2 = mask_loop(mid,dim,2)
[1414]	605	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
[298]	606	ENDIF
	607	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	608	> zu(nz+1) / mask_scale(dim) ) THEN
[303]	609	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	610	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	611	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	612	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
	613	')=',zu(nz+1)/mask_scale(dim)
[564]	614	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	615	ENDIF
[303]	616	ind_array = &
[595]	617	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	618	loop_begin = &
[303]	619	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	620	ind_array = &
[595]	621	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	622	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	623	!
[303]	624	!-- The following line assumes a constant vertical grid spacing within
	625	!-- the vertical mask range; it fails for vertical grid stretching.
	626	!-- Maybe revise later. Issue warning but continue execution.
	627	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	628
	629	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
	630	THEN
[557]	631	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	632	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
[303]	633	' exceeds dz_stretch_level=',dz_stretch_level, &
	634	'.&Vertical mask locations will not ', &
	635	'match the desired heights&within the stretching ', &
	636	'region. Recommendation: use mask instead of mask_loop.'
[564]	637	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	638	ENDIF
	639
[298]	640	ENDIF
	641	!
	642	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
[1353]	643	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
	644	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
[298]	645	!
	646	!-- The default stride +/-1 (every grid point) applies if
	647	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	648	IF ( loop_stride == 0 ) THEN
	649	IF ( loop_end >= loop_begin ) THEN
	650	loop_stride = 1
	651	ELSE
	652	loop_stride = -1
	653	ENDIF
	654	ENDIF
	655	DO m = loop_begin, loop_end, loop_stride
	656	count = count + 1
[1414]	657	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	658	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	659	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	660	count_l = count_l + 1
	661	IF ( dim == 1 ) THEN
	662	mask_i(mid,count_l) = m
	663	ELSEIF ( dim == 2 ) THEN
	664	mask_j(mid,count_l) = m
	665	ELSEIF ( dim == 3 ) THEN
	666	mask_k(mid,count_l) = m
	667	ENDIF
	668	ENDIF
	669	ENDDO
	670	mask_size(mid,dim) = count
	671	mask_size_l(mid,dim) = count_l
[1414]	672
[298]	673	ENDIF
	674
	675	END SUBROUTINE set_mask_locations
	676
	677	END SUBROUTINE init_masks

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