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source: palm/trunk/SOURCE/init_masks.f90 @ 2817

Last change on this file since 2817 was 2718, checked in by maronga, 7 years ago
deleting of deprecated files; headers updated where needed
Property svn:keywords set to `Id`
File size: 30.5 KB

Rev	Line
[1682]	1	!> @file init_masks.f90
[2000]	2	!------------------------------------------------------------------------------!
[2696]	3	! This file is part of the PALM model system.
[1036]	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	!
[2718]	17	! Copyright 1997-2018 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 2718 2018-01-02 08:49:38Z knoop $
[2716]	27	! Corrected "Former revisions" section
	28	!
	29	! 2696 2017-12-14 17:12:51Z kanani
	30	! Change in file header (GPL part)
	31	!
	32	! 2344 2017-08-09 11:00:34Z raasch
[2344]	33	! explicit setting of initial values for array domask required due to a bug
	34	! in the Cray compiler (appears only if option -eD is used)
	35	!
	36	! 2301 2017-06-29 16:41:21Z gronemeier
[2301]	37	! Bugfix: set variable name length to global value
	38	!
	39	!
[2292]	40	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
	41	! includes two more prognostic equations for cloud drop concentration (nc)
	42	! and cloud water content (qc).
	43	!
	44	! 2271 2017-06-09 12:34:55Z sward
[2271]	45	! Changed error message
	46	!
	47	! 2101 2017-01-05 16:42:31Z suehring
[1321]	48	!
[2032]	49	! 2031 2016-10-21 15:11:58Z knoop
	50	! renamed variable rho to rho_ocean
	51	!
[2001]	52	! 2000 2016-08-20 18:09:15Z knoop
	53	! Forced header and separation lines into 80 columns
	54	!
[1823]	55	! 1822 2016-04-07 07:49:42Z hoffmann
	56	! icloud_scheme replaced by microphysics_*
	57	!
[1805]	58	! 1804 2016-04-05 16:30:18Z maronga
	59	! Removed code for parameter file check (__check)
	60	!
[1784]	61	! 1783 2016-03-06 18:36:17Z raasch
	62	! netcdf module name changed + related changes
	63	!
[1683]	64	! 1682 2015-10-07 23:56:08Z knoop
	65	! Code annotations made doxygen readable
	66	!
[1439]	67	! 1438 2014-07-22 14:14:06Z heinze
	68	! +nr, qc, qr
	69	!
[1415]	70	! 1414 2014-05-31 11:19:48Z gronemeier
	71	! Bugfix: first and last grid points as they appear in 3D volume data can now
	72	! be included to masked data output
	73	!
[1354]	74	! 1353 2014-04-08 15:21:23Z heinze
	75	! REAL constants provided with KIND-attribute
	76	!
[1325]	77	! 1324 2014-03-21 09:13:16Z suehring
	78	! Bugfix: ONLY statement for module netcdf_control removed
	79	!
[1321]	80	! 1320 2014-03-20 08:40:49Z raasch
[1320]	81	! ONLY-attribute added to USE-statements,
	82	! kind-parameters added to all INTEGER and REAL declaration statements,
	83	! kinds are defined in new module kinds,
	84	! revision history before 2012 removed,
	85	! comment fields (!:) to be used for variable explanations added to
	86	! all variable declaration statements
[298]	87	!
[1187]	88	! 1186 2013-06-18 06:22:52Z raasch
	89	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
	90	! because a zero value does not work in case of ocean runs
	91	!
[1037]	92	! 1036 2012-10-22 13:43:42Z raasch
	93	! code put under GPL (PALM 3.9)
	94	!
[1033]	95	! 1032 2012-10-21 13:03:21Z letzel
	96	! mask locations determined based on scalar positions
	97	!
[1035]	98	! 1031 2012-10-19 14:35:30Z raasch
	99	! netCDF4 without parallel file support implemented
	100	!
[997]	101	! 996 2012-09-07 10:41:47Z raasch
	102	! little reformatting
	103	!
[979]	104	! 978 2012-08-09 08:28:32Z fricke
	105	! +z0h*
	106	!
[810]	107	! 809 2012-01-30 13:32:58Z maronga
	108	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
	109	!
[808]	110	! 807 2012-01-25 11:53:51Z maronga
	111	! New cpp directive "__check" implemented which is used by check_namelist_files
	112	!
[449]	113	! 410 2009-12-04 17:05:40Z letzel
	114	! Initial revision
[298]	115	!
[449]	116	!
[298]	117	! Description:
	118	! ------------
[1682]	119	!> Initialize masked data output
[298]	120	!------------------------------------------------------------------------------!
[1682]	121	SUBROUTINE init_masks
[298]	122
[1320]	123	USE arrays_3d, &
	124	ONLY: zu, zw
	125
	126	USE control_parameters, &
	127	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
	128	data_output_masks, data_output_masks_user, &
	129	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
[1822]	130	mask, masks, mask_scale, mask_i, &
[1320]	131	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
	132	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
	133	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
	134	mask_z_loop, max_masks, message_string, mid, &
[2292]	135	microphysics_morrison, microphysics_seifert, passive_scalar, &
[2301]	136	ocean, varnamelength
[1320]	137
	138	USE grid_variables, &
	139	ONLY: dx, dy
	140
	141	USE indices, &
	142	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
	143
	144	USE kinds
	145
[1783]	146	USE netcdf_interface, &
	147	ONLY: domask_unit, netcdf_data_format
[1320]	148
	149	USE particle_attributes, &
	150	ONLY: particle_advection
	151
[298]	152	USE pegrid
	153
	154	IMPLICIT NONE
	155
[2301]	156	CHARACTER (LEN=varnamelength) :: var !<
[1682]	157	CHARACTER (LEN=7) :: unit !<
[1320]	158
[2301]	159	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !<
	160	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !<
[298]	161
[1682]	162	INTEGER(iwp) :: i !<
	163	INTEGER(iwp) :: ilen !<
	164	INTEGER(iwp) :: ind(6) !<
	165	INTEGER(iwp) :: ind_array(1) !<
	166	INTEGER(iwp) :: j !<
	167	INTEGER(iwp) :: k !<
	168	INTEGER(iwp) :: n !<
	169	INTEGER(iwp) :: sender !<
[1320]	170
[1682]	171	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
[298]	172
[1682]	173	LOGICAL :: found !<
[2344]	174
[298]	175	!
[2344]	176	!-- Initial values are explicitly set here due to a bug in the Cray compiler
	177	!-- in case of assignments of initial values in declaration statements for
	178	!-- arrays with more than 9999 elements (appears with -eD only)
	179	domask = ' '
	180
	181	!
[298]	182	!-- Allocation and initialization
[1414]	183	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
[298]	184
[1414]	185	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
	186	mask_j(max_masks,nyn-nys+2), &
	187	mask_k(max_masks,nzt-nzb+2) )
[298]	188	!
	189	!-- internal mask arrays ("mask,dimension,selection")
	190	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	191	mask_loop(max_masks,3,3) )
[493]	192
[298]	193	!
[493]	194	!-- Parallel mask output not yet tested
[1031]	195	IF ( netcdf_data_format > 4 ) THEN
[996]	196	message_string = 'netCDF file formats '// &
	197	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
[493]	198	'&are currently not supported (not yet tested).'
[564]	199	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	200	ENDIF
[553]	201
[298]	202	!
	203	!-- Store data output parameters for masked data output in few shared arrays
[996]	204	DO mid = 1, masks
[564]	205
[553]	206	do_mask (mid,:) = data_output_masks(mid,:)
	207	do_mask_user(mid,:) = data_output_masks_user(mid,:)
	208	mask (mid,1,:) = mask_x(mid,:)
	209	mask (mid,2,:) = mask_y(mid,:)
	210	mask (mid,3,:) = mask_z(mid,:)
[564]	211
[1353]	212	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
	213	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
	214	mask_loop(mid,1,1:2) = -1.0_wp
	215	mask_loop(mid,1,3) = 0.0_wp
[564]	216	ELSE
	217	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	218	ENDIF
[1353]	219	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
	220	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
	221	mask_loop(mid,2,1:2) = -1.0_wp
	222	mask_loop(mid,2,3) = 0.0_wp
[564]	223	ELSE
	224	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	225	ENDIF
[1353]	226	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
	227	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
	228	mask_loop(mid,3,1:2) = -1.0_wp
	229	mask_loop(mid,3,3) = 0.0_wp
[564]	230	ELSE
	231	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	232	ENDIF
	233
[553]	234	ENDDO
	235
[298]	236	mask_i = -1; mask_j = -1; mask_k = -1
[553]	237
[298]	238	!
	239	!-- Global arrays are required by define_netcdf_header.
[1031]	240	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
[1414]	241	ALLOCATE( mask_i_global(max_masks,nx+2), &
	242	mask_j_global(max_masks,ny+2), &
	243	mask_k_global(max_masks,nz+2) )
[298]	244	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	245	ENDIF
	246
	247	!
	248	!-- Determine variable names for each mask
	249	DO mid = 1, masks
	250	!
	251	!-- Append user-defined data output variables to the standard data output
	252	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	253	i = 1
	254	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	255	i = i + 1
	256	ENDDO
	257	j = 1
	258	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	259	IF ( i > 100 ) THEN
	260	WRITE ( message_string, * ) 'number of output quantitities ', &
	261	'given by data_output_mask and data_output_mask_user ', &
	262	'exceeds the limit of 100'
[564]	263	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	264	ENDIF
	265	do_mask(mid,i) = do_mask_user(mid,j)
	266	i = i + 1
	267	j = j + 1
	268	ENDDO
	269	ENDIF
	270
	271	!
	272	!-- Check and set steering parameters for mask data output and averaging
	273	i = 1
[996]	274	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
[298]	275	!
	276	!-- Check for data averaging
	277	ilen = LEN_TRIM( do_mask(mid,i) )
	278	j = 0 ! no data averaging
	279	IF ( ilen > 3 ) THEN
	280	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	281	j = 1 ! data averaging
	282	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	283	ENDIF
	284	ENDIF
	285	var = TRIM( do_mask(mid,i) )
	286	!
	287	!-- Check for allowed value and set units
	288	SELECT CASE ( TRIM( var ) )
	289
	290	CASE ( 'e' )
	291	IF ( constant_diffusion ) THEN
	292	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	293	'" requires constant_diffusion = .FALSE.'
[564]	294	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	295	ENDIF
	296	unit = 'm2/s2'
	297
[771]	298	CASE ( 'lpt' )
	299	IF ( .NOT. cloud_physics ) THEN
	300	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	301	'" requires cloud_physics = .TRUE.'
[773]	302	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	303	ENDIF
	304	unit = 'K'
	305
[2292]	306	CASE ( 'nc' )
	307	IF ( .NOT. cloud_physics ) THEN
	308	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	309	'" requires cloud_physics = .TRUE.'
	310	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
	311	ELSEIF ( .NOT. microphysics_morrison ) THEN
	312	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	313	'res = morrison'
	314	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	315	ENDIF
	316	unit = '1/m3'
	317
[1438]	318	CASE ( 'nr' )
	319	IF ( .NOT. cloud_physics ) THEN
	320	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	321	'" requires cloud_physics = .TRUE.'
	322	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	323	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	324	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	325	'res cloud_scheme = seifert_beheng'
	326	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	327	ENDIF
	328	unit = '1/m3'
	329
[298]	330	CASE ( 'pc', 'pr' )
	331	IF ( .NOT. particle_advection ) THEN
	332	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	333	'" requires a "particles_par"-NAMELIST in the ', &
	334	'parameter file (PARIN)'
[564]	335	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	336	ENDIF
	337	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	338	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	339
	340	CASE ( 'q', 'vpt' )
	341	IF ( .NOT. humidity ) THEN
	342	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	343	'" requires humidity = .TRUE.'
[564]	344	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	345	ENDIF
	346	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
	347	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
	348
[1438]	349	CASE ( 'qc' )
	350	IF ( .NOT. cloud_physics ) THEN
	351	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	352	'res cloud_physics = .TRUE.'
	353	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
	354	ENDIF
	355	unit = 'kg/kg'
	356
[298]	357	CASE ( 'ql' )
	358	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
	359	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	360	'" requires cloud_physics = .TRUE. or cloud_droplets', &
	361	' = .TRUE.'
[564]	362	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	363	ENDIF
	364	unit = 'kg/kg'
	365
	366	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
	367	IF ( .NOT. cloud_droplets ) THEN
	368	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	369	'" requires cloud_droplets = .TRUE.'
[564]	370	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	371	ENDIF
	372	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	373	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	374	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	375
	376	CASE ( 'qv' )
	377	IF ( .NOT. cloud_physics ) THEN
	378	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	379	'" requires cloud_physics = .TRUE.'
[564]	380	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	381	ENDIF
	382	unit = 'kg/kg'
	383
[1438]	384	CASE ( 'qr' )
	385	IF ( .NOT. cloud_physics ) THEN
	386	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	387	'res cloud_physics = .TRUE.'
	388	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	389	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	390	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	391	'res cloud_scheme = seifert_beheng'
	392	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	393	ENDIF
	394	unit = 'kg/kg'
	395
[2031]	396	CASE ( 'rho_ocean' )
[298]	397	IF ( .NOT. ocean ) THEN
	398	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	399	'" requires ocean = .TRUE.'
[564]	400	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	401	ENDIF
	402	unit = 'kg/m3'
	403
	404	CASE ( 's' )
	405	IF ( .NOT. passive_scalar ) THEN
	406	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	407	'" requires passive_scalar = .TRUE.'
[564]	408	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	409	ENDIF
	410	unit = 'conc'
	411
	412	CASE ( 'sa' )
	413	IF ( .NOT. ocean ) THEN
	414	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	415	'" requires ocean = .TRUE.'
[564]	416	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	417	ENDIF
	418	unit = 'psu'
	419
[978]	420	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
[298]	421	WRITE ( message_string, * ) 'illegal value for data_',&
	422	'output: "', TRIM( var ), '" is only allowed', &
	423	'for horizontal cross section'
[564]	424	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	425
	426	CASE ( 'p', 'pt', 'u', 'v', 'w' )
	427	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
	428	IF ( TRIM( var ) == 'pt' ) unit = 'K'
	429	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	430	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	431	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	432	CONTINUE
	433
	434	CASE DEFAULT
	435	CALL user_check_data_output( var, unit )
	436
	437	IF ( unit == 'illegal' ) THEN
	438	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	439	WRITE ( message_string, * ) 'illegal value for data_',&
	440	'output or data_output_user: "', &
	441	TRIM( do_mask(mid,i) ), '"'
[564]	442	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
[298]	443	ELSE
	444	WRITE ( message_string, * ) 'illegal value for data_',&
	445	'output: "', TRIM( do_mask(mid,i) ), '"'
[564]	446	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	447	ENDIF
	448	ENDIF
	449
	450	END SELECT
	451	!
	452	!-- Set the internal steering parameters appropriately
	453	domask_no(mid,j) = domask_no(mid,j) + 1
	454	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	455	domask_unit(mid,j,domask_no(mid,j)) = unit
	456
	457	IF ( j == 1 ) THEN
	458	!
	459	!-- Check, if variable is already subject to averaging
	460	found = .FALSE.
	461	DO k = 1, doav_n
	462	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	463	ENDDO
	464
	465	IF ( .NOT. found ) THEN
	466	doav_n = doav_n + 1
	467	doav(doav_n) = var
	468	ENDIF
	469	ENDIF
	470
	471	i = i + 1
	472
	473	ENDDO ! do_mask(mid,i)
	474	ENDDO ! mid
	475
	476
	477	!
	478	!-- Determine mask locations for each mask
	479	DO mid = 1, masks
	480	!
	481	!-- Set local masks for each subdomain along all three dimensions
	482	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	483	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
	484	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
	485	!
	486	!-- Set global masks along all three dimensions (required by
	487	!-- define_netcdf_header).
[1804]	488	#if defined( __parallel )
[298]	489	!
	490	!-- PE0 receives partial arrays from all processors of the respective mask
	491	!-- and outputs them. Here a barrier has to be set, because otherwise
	492	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	493
[298]	494	CALL MPI_BARRIER( comm2d, ierr )
	495
	496	IF ( myid == 0 ) THEN
	497	!
	498	!-- Local arrays can be relocated directly.
	499	mask_i_global(mid,mask_start_l(mid,1): &
	500	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	501	mask_i(mid,:mask_size_l(mid,1))
	502	mask_j_global(mid,mask_start_l(mid,2): &
	503	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	504	mask_j(mid,:mask_size_l(mid,2))
	505	mask_k_global(mid,mask_start_l(mid,3): &
	506	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	507	mask_k(mid,:mask_size_l(mid,3))
	508	!
	509	!-- Receive data from all other PEs.
	510	DO n = 1, numprocs-1
	511	!
	512	!-- Receive index limits first, then arrays.
	513	!-- Index limits are received in arbitrary order from the PEs.
	514	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	515	comm2d, status, ierr )
	516	!
	517	!-- Not all PEs have data for the mask.
	518	IF ( ind(1) /= -9999 ) THEN
	519	sender = status(MPI_SOURCE)
	520	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	521	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	522	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	523	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	524	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	525	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	526	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	527	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	528	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	529	ENDIF
	530	ENDDO
	531
	532	ELSE
	533	!
	534	!-- If at least part of the mask resides on the PE, send the index limits
	535	!-- for the target array, otherwise send -9999 to PE0.
[996]	536	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	537	mask_size_l(mid,3) > 0 ) THEN
[298]	538	ind(1) = mask_start_l(mid,1)
	539	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	540	ind(3) = mask_start_l(mid,2)
	541	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	542	ind(5) = mask_start_l(mid,3)
	543	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	544	ELSE
	545	ind(1) = -9999; ind(2) = -9999
	546	ind(3) = -9999; ind(4) = -9999
	547	ind(5) = -9999; ind(6) = -9999
	548	ENDIF
	549	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	550	!
	551	!-- If applicable, send data to PE0.
	552	IF ( ind(1) /= -9999 ) THEN
	553	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	554	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	555	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	556	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	557	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	558	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	559	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	560	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	561	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	562	ENDIF
	563	ENDIF
	564	!
	565	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	566	!-- so that PE0 may receive wrong data on tag 0.
	567	CALL MPI_BARRIER( comm2d, ierr )
[409]	568
[1031]	569	IF ( netcdf_data_format > 4 ) THEN
[409]	570
[1414]	571	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
[493]	572	ierr )
[1414]	573	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
[493]	574	ierr )
[1414]	575	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
[493]	576	ierr )
[1682]	577
[409]	578	ENDIF
[298]	579
[1804]	580	#else
[298]	581	!
	582	!-- Local arrays can be relocated directly.
	583	mask_i_global(mid,:) = mask_i(mid,:)
	584	mask_j_global(mid,:) = mask_j(mid,:)
	585	mask_k_global(mid,:) = mask_k(mid,:)
	586	#endif
	587	ENDDO ! mid
	588
	589	DEALLOCATE( tmp_array )
	590	!
	591	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	592	!-- required for header output on PE 0.
	593	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	594
	595	CONTAINS
[493]	596
[298]	597	!------------------------------------------------------------------------------!
	598	! Description:
	599	! ------------
[1682]	600	!> Set local mask for each subdomain along 'dim' direction.
[298]	601	!------------------------------------------------------------------------------!
[1682]	602	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	603	lb, ub )
[298]	604
	605	IMPLICIT NONE
	606
[1682]	607	CHARACTER (LEN=2) :: dxyz_string !<
	608	CHARACTER (LEN=2) :: nxyz_string !<
[1320]	609
[1682]	610	INTEGER(iwp) :: count !<
	611	INTEGER(iwp) :: count_l !<
	612	INTEGER(iwp) :: dim !<
	613	INTEGER(iwp) :: m !<
	614	INTEGER(iwp) :: loop_begin !<
	615	INTEGER(iwp) :: loop_end !<
	616	INTEGER(iwp) :: loop_stride !<
	617	INTEGER(iwp) :: lb !<
	618	INTEGER(iwp) :: nxyz !<
	619	INTEGER(iwp) :: ub !<
[1320]	620
[1682]	621	REAL(wp) :: dxyz !<
	622	REAL(wp) :: ddxyz !<
	623	REAL(wp) :: tmp1 !<
	624	REAL(wp) :: tmp2 !<
[298]	625
[1353]	626	count = 0; count_l = 0
	627	ddxyz = 1.0_wp / dxyz
	628	tmp1 = 0.0_wp
	629	tmp2 = 0.0_wp
[298]	630
[1353]	631	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
[298]	632	!
	633	!-- use predefined mask_* array
[1353]	634	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
[298]	635	count = count + 1
	636	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	637	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
[1414]	638	IF ( m < 0 ) m = 0 ! avoid negative values
[298]	639	ELSEIF ( dim == 3 ) THEN
	640	ind_array = &
[595]	641	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	642	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	643	ENDIF
[1414]	644	IF ( m > (nxyz+1) ) THEN
[303]	645	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	646	m,' in mask ',mid,' along dimension ',dim, &
[1414]	647	' exceeds (',nxyz_string,'+1) = ',nxyz+1
[564]	648	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	649	ENDIF
[1414]	650	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	651	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	652	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	653	count_l = count_l + 1
	654	IF ( dim == 1 ) THEN
	655	mask_i(mid,count_l) = m
	656	ELSEIF ( dim == 2 ) THEN
	657	mask_j(mid,count_l) = m
	658	ELSEIF ( dim == 3 ) THEN
	659	mask_k(mid,count_l) = m
	660	ENDIF
	661	ENDIF
	662	IF ( count == mask_xyz_dimension ) EXIT
	663	ENDDO
	664	mask_size(mid,dim) = count
	665	mask_size_l(mid,dim) = count_l
	666
	667	ELSE
	668	!
	669	!-- use predefined mask_loop_* array, or use the default (all grid points
	670	!-- along this direction)
[1353]	671	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
[298]	672	tmp1 = mask_loop(mid,dim,1)
[1186]	673	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
[298]	674	ENDIF
	675	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	676	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	677	tmp2 = mask_loop(mid,dim,2)
[1414]	678	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
[298]	679	ENDIF
	680	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	681	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
[303]	682	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
	683	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	684	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	685	mask_loop(mid,dim,2),'&exceed (', &
	686	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
	687	(nxyz+1)*dxyz/mask_scale(dim)
[564]	688	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	689	ENDIF
[1032]	690	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
[1353]	691	* ddxyz - 0.5_wp )
[1032]	692	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
[1353]	693	* ddxyz - 0.5_wp )
[1032]	694	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
	695	* ddxyz )
[1414]	696	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
[298]	697	ELSEIF ( dim == 3 ) THEN
[1353]	698	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	699	tmp2 = mask_loop(mid,dim,2)
[1414]	700	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
[298]	701	ENDIF
	702	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	703	> zu(nz+1) / mask_scale(dim) ) THEN
[303]	704	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	705	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	706	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	707	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
	708	')=',zu(nz+1)/mask_scale(dim)
[564]	709	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	710	ENDIF
[303]	711	ind_array = &
[595]	712	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	713	loop_begin = &
[303]	714	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	715	ind_array = &
[595]	716	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	717	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	718	!
[303]	719	!-- The following line assumes a constant vertical grid spacing within
	720	!-- the vertical mask range; it fails for vertical grid stretching.
	721	!-- Maybe revise later. Issue warning but continue execution.
	722	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	723
	724	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
	725	THEN
[557]	726	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	727	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
[303]	728	' exceeds dz_stretch_level=',dz_stretch_level, &
	729	'.&Vertical mask locations will not ', &
	730	'match the desired heights&within the stretching ', &
[2271]	731	'region.'
[564]	732	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	733	ENDIF
	734
[298]	735	ENDIF
	736	!
	737	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
[1353]	738	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
	739	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
[298]	740	!
	741	!-- The default stride +/-1 (every grid point) applies if
	742	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	743	IF ( loop_stride == 0 ) THEN
	744	IF ( loop_end >= loop_begin ) THEN
	745	loop_stride = 1
	746	ELSE
	747	loop_stride = -1
	748	ENDIF
	749	ENDIF
	750	DO m = loop_begin, loop_end, loop_stride
	751	count = count + 1
[1414]	752	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	753	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	754	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	755	count_l = count_l + 1
	756	IF ( dim == 1 ) THEN
	757	mask_i(mid,count_l) = m
	758	ELSEIF ( dim == 2 ) THEN
	759	mask_j(mid,count_l) = m
	760	ELSEIF ( dim == 3 ) THEN
	761	mask_k(mid,count_l) = m
	762	ENDIF
	763	ENDIF
	764	ENDDO
	765	mask_size(mid,dim) = count
	766	mask_size_l(mid,dim) = count_l
[1414]	767
[298]	768	ENDIF
	769
	770	END SUBROUTINE set_mask_locations
	771
	772	END SUBROUTINE init_masks

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