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source: palm/trunk/SOURCE/init_masks.f90 @ 2371

Last change on this file since 2371 was 2344, checked in by raasch, 7 years ago
explicit setting of initial values for array domask required due to a bug in the Cray compiler (appears only if option -eD is used)
Property svn:keywords set to `Id`
File size: 30.4 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 2344 2017-08-09 11:00:34Z kanani $
[2344]	27	! explicit setting of initial values for array domask required due to a bug
	28	! in the Cray compiler (appears only if option -eD is used)
	29	!
	30	! 2301 2017-06-29 16:41:21Z gronemeier
[2301]	31	! Bugfix: set variable name length to global value
	32	!
	33	!
[2292]	34	! Implementation of new microphysic scheme: cloud_scheme = 'morrison'
	35	! includes two more prognostic equations for cloud drop concentration (nc)
	36	! and cloud water content (qc).
	37	!
	38	! 2271 2017-06-09 12:34:55Z sward
[2271]	39	! Changed error message
	40	!
	41	! 2101 2017-01-05 16:42:31Z suehring
[1321]	42	!
[2032]	43	! 2031 2016-10-21 15:11:58Z knoop
	44	! renamed variable rho to rho_ocean
	45	!
[2001]	46	! 2000 2016-08-20 18:09:15Z knoop
	47	! Forced header and separation lines into 80 columns
	48	!
[1823]	49	! 1822 2016-04-07 07:49:42Z hoffmann
	50	! icloud_scheme replaced by microphysics_*
	51	!
[1805]	52	! 1804 2016-04-05 16:30:18Z maronga
	53	! Removed code for parameter file check (__check)
	54	!
[1784]	55	! 1783 2016-03-06 18:36:17Z raasch
	56	! netcdf module name changed + related changes
	57	!
[1683]	58	! 1682 2015-10-07 23:56:08Z knoop
	59	! Code annotations made doxygen readable
	60	!
[1439]	61	! 1438 2014-07-22 14:14:06Z heinze
	62	! +nr, qc, qr
	63	!
[1415]	64	! 1414 2014-05-31 11:19:48Z gronemeier
	65	! Bugfix: first and last grid points as they appear in 3D volume data can now
	66	! be included to masked data output
	67	!
[1354]	68	! 1353 2014-04-08 15:21:23Z heinze
	69	! REAL constants provided with KIND-attribute
	70	!
[1325]	71	! 1324 2014-03-21 09:13:16Z suehring
	72	! Bugfix: ONLY statement for module netcdf_control removed
	73	!
[1321]	74	! 1320 2014-03-20 08:40:49Z raasch
[1320]	75	! ONLY-attribute added to USE-statements,
	76	! kind-parameters added to all INTEGER and REAL declaration statements,
	77	! kinds are defined in new module kinds,
	78	! revision history before 2012 removed,
	79	! comment fields (!:) to be used for variable explanations added to
	80	! all variable declaration statements
[298]	81	!
[1187]	82	! 1186 2013-06-18 06:22:52Z raasch
	83	! bugfix: 0.0 replaced by zu(nzb) as the lowest default height level for masks,
	84	! because a zero value does not work in case of ocean runs
	85	!
[1037]	86	! 1036 2012-10-22 13:43:42Z raasch
	87	! code put under GPL (PALM 3.9)
	88	!
[1033]	89	! 1032 2012-10-21 13:03:21Z letzel
	90	! mask locations determined based on scalar positions
	91	!
[1035]	92	! 1031 2012-10-19 14:35:30Z raasch
	93	! netCDF4 without parallel file support implemented
	94	!
[997]	95	! 996 2012-09-07 10:41:47Z raasch
	96	! little reformatting
	97	!
[979]	98	! 978 2012-08-09 08:28:32Z fricke
	99	! +z0h*
	100	!
[810]	101	! 809 2012-01-30 13:32:58Z maronga
	102	! Bugfix: replaced .AND. and .NOT. with && and ! in the preprocessor directives
	103	!
[808]	104	! 807 2012-01-25 11:53:51Z maronga
	105	! New cpp directive "__check" implemented which is used by check_namelist_files
	106	!
[449]	107	! 410 2009-12-04 17:05:40Z letzel
	108	! Initial revision
[298]	109	!
[449]	110	!
[298]	111	! Description:
	112	! ------------
[1682]	113	!> Initialize masked data output
[298]	114	!------------------------------------------------------------------------------!
[1682]	115	SUBROUTINE init_masks
[298]	116
[1320]	117	USE arrays_3d, &
	118	ONLY: zu, zw
	119
	120	USE control_parameters, &
	121	ONLY: constant_diffusion, cloud_droplets, cloud_physics, &
	122	data_output_masks, data_output_masks_user, &
	123	doav, doav_n, domask, domask_no, dz, dz_stretch_level, humidity,&
[1822]	124	mask, masks, mask_scale, mask_i, &
[1320]	125	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
	126	mask_loop, mask_size, mask_size_l, mask_start_l, mask_x, &
	127	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
	128	mask_z_loop, max_masks, message_string, mid, &
[2292]	129	microphysics_morrison, microphysics_seifert, passive_scalar, &
[2301]	130	ocean, varnamelength
[1320]	131
	132	USE grid_variables, &
	133	ONLY: dx, dy
	134
	135	USE indices, &
	136	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
	137
	138	USE kinds
	139
[1783]	140	USE netcdf_interface, &
	141	ONLY: domask_unit, netcdf_data_format
[1320]	142
	143	USE particle_attributes, &
	144	ONLY: particle_advection
	145
[298]	146	USE pegrid
	147
	148	IMPLICIT NONE
	149
[2301]	150	CHARACTER (LEN=varnamelength) :: var !<
[1682]	151	CHARACTER (LEN=7) :: unit !<
[1320]	152
[2301]	153	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !<
	154	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !<
[298]	155
[1682]	156	INTEGER(iwp) :: i !<
	157	INTEGER(iwp) :: ilen !<
	158	INTEGER(iwp) :: ind(6) !<
	159	INTEGER(iwp) :: ind_array(1) !<
	160	INTEGER(iwp) :: j !<
	161	INTEGER(iwp) :: k !<
	162	INTEGER(iwp) :: n !<
	163	INTEGER(iwp) :: sender !<
[1320]	164
[1682]	165	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !<
[298]	166
[1682]	167	LOGICAL :: found !<
[2344]	168
[298]	169	!
[2344]	170	!-- Initial values are explicitly set here due to a bug in the Cray compiler
	171	!-- in case of assignments of initial values in declaration statements for
	172	!-- arrays with more than 9999 elements (appears with -eD only)
	173	domask = ' '
	174
	175	!
[298]	176	!-- Allocation and initialization
[1414]	177	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
[298]	178
[1414]	179	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
	180	mask_j(max_masks,nyn-nys+2), &
	181	mask_k(max_masks,nzt-nzb+2) )
[298]	182	!
	183	!-- internal mask arrays ("mask,dimension,selection")
	184	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	185	mask_loop(max_masks,3,3) )
[493]	186
[298]	187	!
[493]	188	!-- Parallel mask output not yet tested
[1031]	189	IF ( netcdf_data_format > 4 ) THEN
[996]	190	message_string = 'netCDF file formats '// &
	191	'3 (netCDF 4) and 4 (netCDF 4 Classic model)'// &
[493]	192	'&are currently not supported (not yet tested).'
[564]	193	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	194	ENDIF
[553]	195
[298]	196	!
	197	!-- Store data output parameters for masked data output in few shared arrays
[996]	198	DO mid = 1, masks
[564]	199
[553]	200	do_mask (mid,:) = data_output_masks(mid,:)
	201	do_mask_user(mid,:) = data_output_masks_user(mid,:)
	202	mask (mid,1,:) = mask_x(mid,:)
	203	mask (mid,2,:) = mask_y(mid,:)
	204	mask (mid,3,:) = mask_z(mid,:)
[564]	205
[1353]	206	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
	207	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
	208	mask_loop(mid,1,1:2) = -1.0_wp
	209	mask_loop(mid,1,3) = 0.0_wp
[564]	210	ELSE
	211	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	212	ENDIF
[1353]	213	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
	214	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
	215	mask_loop(mid,2,1:2) = -1.0_wp
	216	mask_loop(mid,2,3) = 0.0_wp
[564]	217	ELSE
	218	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	219	ENDIF
[1353]	220	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
	221	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
	222	mask_loop(mid,3,1:2) = -1.0_wp
	223	mask_loop(mid,3,3) = 0.0_wp
[564]	224	ELSE
	225	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	226	ENDIF
	227
[553]	228	ENDDO
	229
[298]	230	mask_i = -1; mask_j = -1; mask_k = -1
[553]	231
[298]	232	!
	233	!-- Global arrays are required by define_netcdf_header.
[1031]	234	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
[1414]	235	ALLOCATE( mask_i_global(max_masks,nx+2), &
	236	mask_j_global(max_masks,ny+2), &
	237	mask_k_global(max_masks,nz+2) )
[298]	238	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	239	ENDIF
	240
	241	!
	242	!-- Determine variable names for each mask
	243	DO mid = 1, masks
	244	!
	245	!-- Append user-defined data output variables to the standard data output
	246	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	247	i = 1
	248	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	249	i = i + 1
	250	ENDDO
	251	j = 1
	252	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	253	IF ( i > 100 ) THEN
	254	WRITE ( message_string, * ) 'number of output quantitities ', &
	255	'given by data_output_mask and data_output_mask_user ', &
	256	'exceeds the limit of 100'
[564]	257	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	258	ENDIF
	259	do_mask(mid,i) = do_mask_user(mid,j)
	260	i = i + 1
	261	j = j + 1
	262	ENDDO
	263	ENDIF
	264
	265	!
	266	!-- Check and set steering parameters for mask data output and averaging
	267	i = 1
[996]	268	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
[298]	269	!
	270	!-- Check for data averaging
	271	ilen = LEN_TRIM( do_mask(mid,i) )
	272	j = 0 ! no data averaging
	273	IF ( ilen > 3 ) THEN
	274	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	275	j = 1 ! data averaging
	276	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	277	ENDIF
	278	ENDIF
	279	var = TRIM( do_mask(mid,i) )
	280	!
	281	!-- Check for allowed value and set units
	282	SELECT CASE ( TRIM( var ) )
	283
	284	CASE ( 'e' )
	285	IF ( constant_diffusion ) THEN
	286	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	287	'" requires constant_diffusion = .FALSE.'
[564]	288	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	289	ENDIF
	290	unit = 'm2/s2'
	291
[771]	292	CASE ( 'lpt' )
	293	IF ( .NOT. cloud_physics ) THEN
	294	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	295	'" requires cloud_physics = .TRUE.'
[773]	296	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	297	ENDIF
	298	unit = 'K'
	299
[2292]	300	CASE ( 'nc' )
	301	IF ( .NOT. cloud_physics ) THEN
	302	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	303	'" requires cloud_physics = .TRUE.'
	304	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
	305	ELSEIF ( .NOT. microphysics_morrison ) THEN
	306	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	307	'res = morrison'
	308	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	309	ENDIF
	310	unit = '1/m3'
	311
[1438]	312	CASE ( 'nr' )
	313	IF ( .NOT. cloud_physics ) THEN
	314	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	315	'" requires cloud_physics = .TRUE.'
	316	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	317	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	318	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	319	'res cloud_scheme = seifert_beheng'
	320	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	321	ENDIF
	322	unit = '1/m3'
	323
[298]	324	CASE ( 'pc', 'pr' )
	325	IF ( .NOT. particle_advection ) THEN
	326	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	327	'" requires a "particles_par"-NAMELIST in the ', &
	328	'parameter file (PARIN)'
[564]	329	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	330	ENDIF
	331	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	332	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	333
	334	CASE ( 'q', 'vpt' )
	335	IF ( .NOT. humidity ) THEN
	336	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	337	'" requires humidity = .TRUE.'
[564]	338	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	339	ENDIF
	340	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
	341	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
	342
[1438]	343	CASE ( 'qc' )
	344	IF ( .NOT. cloud_physics ) THEN
	345	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	346	'res cloud_physics = .TRUE.'
	347	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
	348	ENDIF
	349	unit = 'kg/kg'
	350
[298]	351	CASE ( 'ql' )
	352	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
	353	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	354	'" requires cloud_physics = .TRUE. or cloud_droplets', &
	355	' = .TRUE.'
[564]	356	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	357	ENDIF
	358	unit = 'kg/kg'
	359
	360	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
	361	IF ( .NOT. cloud_droplets ) THEN
	362	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	363	'" requires cloud_droplets = .TRUE.'
[564]	364	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	365	ENDIF
	366	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	367	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	368	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	369
	370	CASE ( 'qv' )
	371	IF ( .NOT. cloud_physics ) THEN
	372	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	373	'" requires cloud_physics = .TRUE.'
[564]	374	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	375	ENDIF
	376	unit = 'kg/kg'
	377
[1438]	378	CASE ( 'qr' )
	379	IF ( .NOT. cloud_physics ) THEN
	380	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	381	'res cloud_physics = .TRUE.'
	382	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	383	ELSEIF ( .NOT. microphysics_seifert ) THEN
[1438]	384	message_string = 'output of "' // TRIM( var ) // '" requi' // &
	385	'res cloud_scheme = seifert_beheng'
	386	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	387	ENDIF
	388	unit = 'kg/kg'
	389
[2031]	390	CASE ( 'rho_ocean' )
[298]	391	IF ( .NOT. ocean ) THEN
	392	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	393	'" requires ocean = .TRUE.'
[564]	394	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	395	ENDIF
	396	unit = 'kg/m3'
	397
	398	CASE ( 's' )
	399	IF ( .NOT. passive_scalar ) THEN
	400	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	401	'" requires passive_scalar = .TRUE.'
[564]	402	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	403	ENDIF
	404	unit = 'conc'
	405
	406	CASE ( 'sa' )
	407	IF ( .NOT. ocean ) THEN
	408	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	409	'" requires ocean = .TRUE.'
[564]	410	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	411	ENDIF
	412	unit = 'psu'
	413
[978]	414	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
[298]	415	WRITE ( message_string, * ) 'illegal value for data_',&
	416	'output: "', TRIM( var ), '" is only allowed', &
	417	'for horizontal cross section'
[564]	418	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	419
	420	CASE ( 'p', 'pt', 'u', 'v', 'w' )
	421	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
	422	IF ( TRIM( var ) == 'pt' ) unit = 'K'
	423	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	424	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	425	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	426	CONTINUE
	427
	428	CASE DEFAULT
	429	CALL user_check_data_output( var, unit )
	430
	431	IF ( unit == 'illegal' ) THEN
	432	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	433	WRITE ( message_string, * ) 'illegal value for data_',&
	434	'output or data_output_user: "', &
	435	TRIM( do_mask(mid,i) ), '"'
[564]	436	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
[298]	437	ELSE
	438	WRITE ( message_string, * ) 'illegal value for data_',&
	439	'output: "', TRIM( do_mask(mid,i) ), '"'
[564]	440	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	441	ENDIF
	442	ENDIF
	443
	444	END SELECT
	445	!
	446	!-- Set the internal steering parameters appropriately
	447	domask_no(mid,j) = domask_no(mid,j) + 1
	448	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	449	domask_unit(mid,j,domask_no(mid,j)) = unit
	450
	451	IF ( j == 1 ) THEN
	452	!
	453	!-- Check, if variable is already subject to averaging
	454	found = .FALSE.
	455	DO k = 1, doav_n
	456	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	457	ENDDO
	458
	459	IF ( .NOT. found ) THEN
	460	doav_n = doav_n + 1
	461	doav(doav_n) = var
	462	ENDIF
	463	ENDIF
	464
	465	i = i + 1
	466
	467	ENDDO ! do_mask(mid,i)
	468	ENDDO ! mid
	469
	470
	471	!
	472	!-- Determine mask locations for each mask
	473	DO mid = 1, masks
	474	!
	475	!-- Set local masks for each subdomain along all three dimensions
	476	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	477	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
	478	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
	479	!
	480	!-- Set global masks along all three dimensions (required by
	481	!-- define_netcdf_header).
[1804]	482	#if defined( __parallel )
[298]	483	!
	484	!-- PE0 receives partial arrays from all processors of the respective mask
	485	!-- and outputs them. Here a barrier has to be set, because otherwise
	486	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	487
[298]	488	CALL MPI_BARRIER( comm2d, ierr )
	489
	490	IF ( myid == 0 ) THEN
	491	!
	492	!-- Local arrays can be relocated directly.
	493	mask_i_global(mid,mask_start_l(mid,1): &
	494	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	495	mask_i(mid,:mask_size_l(mid,1))
	496	mask_j_global(mid,mask_start_l(mid,2): &
	497	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	498	mask_j(mid,:mask_size_l(mid,2))
	499	mask_k_global(mid,mask_start_l(mid,3): &
	500	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	501	mask_k(mid,:mask_size_l(mid,3))
	502	!
	503	!-- Receive data from all other PEs.
	504	DO n = 1, numprocs-1
	505	!
	506	!-- Receive index limits first, then arrays.
	507	!-- Index limits are received in arbitrary order from the PEs.
	508	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	509	comm2d, status, ierr )
	510	!
	511	!-- Not all PEs have data for the mask.
	512	IF ( ind(1) /= -9999 ) THEN
	513	sender = status(MPI_SOURCE)
	514	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	515	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	516	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	517	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	518	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	519	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	520	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	521	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	522	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	523	ENDIF
	524	ENDDO
	525
	526	ELSE
	527	!
	528	!-- If at least part of the mask resides on the PE, send the index limits
	529	!-- for the target array, otherwise send -9999 to PE0.
[996]	530	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	531	mask_size_l(mid,3) > 0 ) THEN
[298]	532	ind(1) = mask_start_l(mid,1)
	533	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	534	ind(3) = mask_start_l(mid,2)
	535	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	536	ind(5) = mask_start_l(mid,3)
	537	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	538	ELSE
	539	ind(1) = -9999; ind(2) = -9999
	540	ind(3) = -9999; ind(4) = -9999
	541	ind(5) = -9999; ind(6) = -9999
	542	ENDIF
	543	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	544	!
	545	!-- If applicable, send data to PE0.
	546	IF ( ind(1) /= -9999 ) THEN
	547	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	548	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	549	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	550	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	551	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	552	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	553	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	554	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	555	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	556	ENDIF
	557	ENDIF
	558	!
	559	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	560	!-- so that PE0 may receive wrong data on tag 0.
	561	CALL MPI_BARRIER( comm2d, ierr )
[409]	562
[1031]	563	IF ( netcdf_data_format > 4 ) THEN
[409]	564
[1414]	565	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
[493]	566	ierr )
[1414]	567	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
[493]	568	ierr )
[1414]	569	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
[493]	570	ierr )
[1682]	571
[409]	572	ENDIF
[298]	573
[1804]	574	#else
[298]	575	!
	576	!-- Local arrays can be relocated directly.
	577	mask_i_global(mid,:) = mask_i(mid,:)
	578	mask_j_global(mid,:) = mask_j(mid,:)
	579	mask_k_global(mid,:) = mask_k(mid,:)
	580	#endif
	581	ENDDO ! mid
	582
	583	DEALLOCATE( tmp_array )
	584	!
	585	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	586	!-- required for header output on PE 0.
	587	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	588
	589	CONTAINS
[493]	590
[298]	591	!------------------------------------------------------------------------------!
	592	! Description:
	593	! ------------
[1682]	594	!> Set local mask for each subdomain along 'dim' direction.
[298]	595	!------------------------------------------------------------------------------!
[1682]	596	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	597	lb, ub )
[298]	598
	599	IMPLICIT NONE
	600
[1682]	601	CHARACTER (LEN=2) :: dxyz_string !<
	602	CHARACTER (LEN=2) :: nxyz_string !<
[1320]	603
[1682]	604	INTEGER(iwp) :: count !<
	605	INTEGER(iwp) :: count_l !<
	606	INTEGER(iwp) :: dim !<
	607	INTEGER(iwp) :: m !<
	608	INTEGER(iwp) :: loop_begin !<
	609	INTEGER(iwp) :: loop_end !<
	610	INTEGER(iwp) :: loop_stride !<
	611	INTEGER(iwp) :: lb !<
	612	INTEGER(iwp) :: nxyz !<
	613	INTEGER(iwp) :: ub !<
[1320]	614
[1682]	615	REAL(wp) :: dxyz !<
	616	REAL(wp) :: ddxyz !<
	617	REAL(wp) :: tmp1 !<
	618	REAL(wp) :: tmp2 !<
[298]	619
[1353]	620	count = 0; count_l = 0
	621	ddxyz = 1.0_wp / dxyz
	622	tmp1 = 0.0_wp
	623	tmp2 = 0.0_wp
[298]	624
[1353]	625	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
[298]	626	!
	627	!-- use predefined mask_* array
[1353]	628	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
[298]	629	count = count + 1
	630	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	631	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
[1414]	632	IF ( m < 0 ) m = 0 ! avoid negative values
[298]	633	ELSEIF ( dim == 3 ) THEN
	634	ind_array = &
[595]	635	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	636	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	637	ENDIF
[1414]	638	IF ( m > (nxyz+1) ) THEN
[303]	639	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	640	m,' in mask ',mid,' along dimension ',dim, &
[1414]	641	' exceeds (',nxyz_string,'+1) = ',nxyz+1
[564]	642	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	643	ENDIF
[1414]	644	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	645	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	646	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	647	count_l = count_l + 1
	648	IF ( dim == 1 ) THEN
	649	mask_i(mid,count_l) = m
	650	ELSEIF ( dim == 2 ) THEN
	651	mask_j(mid,count_l) = m
	652	ELSEIF ( dim == 3 ) THEN
	653	mask_k(mid,count_l) = m
	654	ENDIF
	655	ENDIF
	656	IF ( count == mask_xyz_dimension ) EXIT
	657	ENDDO
	658	mask_size(mid,dim) = count
	659	mask_size_l(mid,dim) = count_l
	660
	661	ELSE
	662	!
	663	!-- use predefined mask_loop_* array, or use the default (all grid points
	664	!-- along this direction)
[1353]	665	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
[298]	666	tmp1 = mask_loop(mid,dim,1)
[1186]	667	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
[298]	668	ENDIF
	669	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	670	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	671	tmp2 = mask_loop(mid,dim,2)
[1414]	672	mask_loop(mid,dim,2) = (nxyz+1)*dxyz / mask_scale(dim) ! (default)
[298]	673	ENDIF
	674	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	675	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
[303]	676	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
	677	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	678	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	679	mask_loop(mid,dim,2),'&exceed (', &
	680	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
	681	(nxyz+1)*dxyz/mask_scale(dim)
[564]	682	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	683	ENDIF
[1032]	684	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
[1353]	685	* ddxyz - 0.5_wp )
[1032]	686	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
[1353]	687	* ddxyz - 0.5_wp )
[1032]	688	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
	689	* ddxyz )
[1414]	690	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
[298]	691	ELSEIF ( dim == 3 ) THEN
[1353]	692	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	693	tmp2 = mask_loop(mid,dim,2)
[1414]	694	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
[298]	695	ENDIF
	696	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	697	> zu(nz+1) / mask_scale(dim) ) THEN
[303]	698	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	699	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	700	' and/or mask_loop(',mid,',',dim,',2)=', &
[1414]	701	mask_loop(mid,dim,2),'&exceed zu(nz+1)/mask_scale(',dim, &
	702	')=',zu(nz+1)/mask_scale(dim)
[564]	703	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	704	ENDIF
[303]	705	ind_array = &
[595]	706	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	707	loop_begin = &
[303]	708	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	709	ind_array = &
[595]	710	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	711	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	712	!
[303]	713	!-- The following line assumes a constant vertical grid spacing within
	714	!-- the vertical mask range; it fails for vertical grid stretching.
	715	!-- Maybe revise later. Issue warning but continue execution.
	716	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	717
	718	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
	719	THEN
[557]	720	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	721	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
[303]	722	' exceeds dz_stretch_level=',dz_stretch_level, &
	723	'.&Vertical mask locations will not ', &
	724	'match the desired heights&within the stretching ', &
[2271]	725	'region.'
[564]	726	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	727	ENDIF
	728
[298]	729	ENDIF
	730	!
	731	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
[1353]	732	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
	733	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
[298]	734	!
	735	!-- The default stride +/-1 (every grid point) applies if
	736	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	737	IF ( loop_stride == 0 ) THEN
	738	IF ( loop_end >= loop_begin ) THEN
	739	loop_stride = 1
	740	ELSE
	741	loop_stride = -1
	742	ENDIF
	743	ENDIF
	744	DO m = loop_begin, loop_end, loop_stride
	745	count = count + 1
[1414]	746	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	747	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	748	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	749	count_l = count_l + 1
	750	IF ( dim == 1 ) THEN
	751	mask_i(mid,count_l) = m
	752	ELSEIF ( dim == 2 ) THEN
	753	mask_j(mid,count_l) = m
	754	ELSEIF ( dim == 3 ) THEN
	755	mask_k(mid,count_l) = m
	756	ENDIF
	757	ENDIF
	758	ENDDO
	759	mask_size(mid,dim) = count
	760	mask_size_l(mid,dim) = count_l
[1414]	761
[298]	762	ENDIF
	763
	764	END SUBROUTINE set_mask_locations
	765
	766	END SUBROUTINE init_masks

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