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source: palm/trunk/SOURCE/init_masks.f90 @ 4187

Last change on this file since 4187 was 4182, checked in by scharf, 5 years ago
corrected "Former revisions" section minor formatting in "Former revisions" section added "Author" section
Property svn:keywords set to `Id`
File size: 31.0 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	!
[3655]	17	! Copyright 1997-2019 Leibniz Universitaet Hannover
[2000]	18	!------------------------------------------------------------------------------!
[1036]	19	!
[484]	20	! Current revisions:
[298]	21	! -----------------
[1805]	22	!
[3589]	23	!
[1321]	24	! Former revisions:
	25	! -----------------
	26	! $Id: init_masks.f90 4182 2019-08-22 15:20:23Z suehring $
[4182]	27	! Corrected "Former revisions" section
	28	!
	29	! 4069 2019-07-01 14:05:51Z Giersch
[4069]	30	! Masked output running index mid has been introduced as a local variable to
	31	! avoid runtime error (Loop variable has been modified) in time_integration
	32	!
	33	! 3766 2019-02-26 16:23:41Z raasch
[3665]	34	! unused variables removed
	35	!
[3766]	36	! 3687 2019-01-22 10:42:06Z knoop
	37	! unused variables removed
	38	!
[3665]	39	! 3655 2019-01-07 16:51:22Z knoop
[3589]	40	! Move the control parameter "salsa" from salsa_mod to control_parameters
	41	! (M. Kurppa)
[2716]	42	!
[4182]	43	! 410 2009-12-04 17:05:40Z letzel
	44	! Initial revision
	45	!
	46	!
[298]	47	! Description:
	48	! ------------
[1682]	49	!> Initialize masked data output
[298]	50	!------------------------------------------------------------------------------!
[1682]	51	SUBROUTINE init_masks
[298]	52
[1320]	53	USE arrays_3d, &
	54	ONLY: zu, zw
	55
[3435]	56	USE bulk_cloud_model_mod, &
	57	ONLY: bulk_cloud_model, microphysics_morrison, microphysics_seifert
	58
[1320]	59	USE control_parameters, &
[3766]	60	ONLY: constant_diffusion, cloud_droplets, &
[1320]	61	data_output_masks, data_output_masks_user, &
[3065]	62	doav, doav_n, domask, domask_no, dz, dz_stretch_level_start, &
	63	humidity, mask, masks, mask_scale, mask_i, &
[1320]	64	mask_i_global, mask_j, mask_j_global, mask_k, mask_k_global, &
[3435]	65	mask_k_over_surface, &
	66	mask_loop, mask_size, mask_size_l, mask_start_l, &
	67	mask_surface, mask_x, &
[1320]	68	mask_x_loop, mask_xyz_dimension, mask_y, mask_y_loop, mask_z, &
[4069]	69	mask_z_loop, max_masks, message_string, &
[3766]	70	passive_scalar, ocean_mode, varnamelength
[1320]	71
	72	USE grid_variables, &
	73	ONLY: dx, dy
	74
	75	USE indices, &
	76	ONLY: nx, nxl, nxr, ny, nyn, nys, nz, nzb, nzt
	77
	78	USE kinds
	79
[3687]	80	USE module_interface, &
	81	ONLY: module_interface_init_masks
	82
[1783]	83	USE netcdf_interface, &
	84	ONLY: domask_unit, netcdf_data_format
[1320]	85
	86	USE particle_attributes, &
	87	ONLY: particle_advection
	88
[3687]	89	USE pegrid
[3435]	90
[298]	91	IMPLICIT NONE
	92
[3554]	93	CHARACTER (LEN=varnamelength) :: var !< contains variable name
	94	CHARACTER (LEN=7) :: unit !< contains unit of variable
[1320]	95
[3554]	96	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask !< list of output variables
	97	CHARACTER (LEN=varnamelength), DIMENSION(max_masks,100) :: do_mask_user !< list of user-specified output variables
[298]	98
[3435]	99	INTEGER(iwp) :: count !< counting masking indices along a dimension
[3554]	100	INTEGER(iwp) :: i !< loop index
	101	INTEGER(iwp) :: ilen !< length of string saved in 'do_mask'
	102	INTEGER(iwp) :: ind(6) !< index limits (lower/upper bounds) of output array
	103	INTEGER(iwp) :: ind_array(1) !< array index
	104	INTEGER(iwp) :: j !< loop index
	105	INTEGER(iwp) :: k !< loop index
[3435]	106	INTEGER(iwp) :: m !< mask index
[4069]	107	INTEGER(iwp) :: mid !< masked output running index
[3554]	108	INTEGER(iwp) :: n !< loop index
	109	INTEGER(iwp) :: sender !< PE id of sending PE
[1320]	110
[3554]	111	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: tmp_array !< temporary 1D array
[298]	112
[3554]	113	LOGICAL :: found !< true if variable is found
[2344]	114
[298]	115	!
[2344]	116	!-- Initial values are explicitly set here due to a bug in the Cray compiler
	117	!-- in case of assignments of initial values in declaration statements for
	118	!-- arrays with more than 9999 elements (appears with -eD only)
	119	domask = ' '
	120
	121	!
[298]	122	!-- Allocation and initialization
[1414]	123	ALLOCATE( tmp_array( MAX(nx,ny,nz)+2 ) )
[298]	124
[1414]	125	ALLOCATE( mask_i(max_masks,nxr-nxl+2), &
	126	mask_j(max_masks,nyn-nys+2), &
	127	mask_k(max_masks,nzt-nzb+2) )
[298]	128	!
	129	!-- internal mask arrays ("mask,dimension,selection")
	130	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	131	mask_loop(max_masks,3,3) )
[493]	132
[298]	133	!
[3045]	134	!-- Parallel mask output not yet supported. In check_parameters data format
	135	!-- is restricted and is switched back to non-parallel output. Therefore the
	136	!-- following error can not occur at the moment.
[1031]	137	IF ( netcdf_data_format > 4 ) THEN
[3045]	138	message_string = 'netCDF file formats '// &
	139	'5 and 6 (with parallel I/O support)'// &
	140	' are currently not supported.'
[564]	141	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	142	ENDIF
[553]	143
[298]	144	!
	145	!-- Store data output parameters for masked data output in few shared arrays
[996]	146	DO mid = 1, masks
[564]	147
[553]	148	do_mask (mid,:) = data_output_masks(mid,:)
	149	do_mask_user(mid,:) = data_output_masks_user(mid,:)
	150	mask (mid,1,:) = mask_x(mid,:)
	151	mask (mid,2,:) = mask_y(mid,:)
	152	mask (mid,3,:) = mask_z(mid,:)
[3435]	153	!
	154	!-- Flag a mask as terrain following
	155	IF ( mask_k_over_surface(mid,1) /= -1_iwp ) THEN
	156	mask_surface(mid) = .TRUE.
	157	ENDIF
	158
[1353]	159	IF ( mask_x_loop(mid,1) == -1.0_wp .AND. mask_x_loop(mid,2) == -1.0_wp&
	160	.AND. mask_x_loop(mid,3) == -1.0_wp ) THEN
	161	mask_loop(mid,1,1:2) = -1.0_wp
	162	mask_loop(mid,1,3) = 0.0_wp
[564]	163	ELSE
	164	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	165	ENDIF
[1353]	166	IF ( mask_y_loop(mid,1) == -1.0_wp .AND. mask_y_loop(mid,2) == -1.0_wp&
	167	.AND. mask_y_loop(mid,3) == -1.0_wp ) THEN
	168	mask_loop(mid,2,1:2) = -1.0_wp
	169	mask_loop(mid,2,3) = 0.0_wp
[564]	170	ELSE
	171	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	172	ENDIF
[1353]	173	IF ( mask_z_loop(mid,1) == -1.0_wp .AND. mask_z_loop(mid,2) == -1.0_wp&
	174	.AND. mask_z_loop(mid,3) == -1.0_wp ) THEN
	175	mask_loop(mid,3,1:2) = -1.0_wp
	176	mask_loop(mid,3,3) = 0.0_wp
[564]	177	ELSE
	178	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	179	ENDIF
	180
[553]	181	ENDDO
	182
[298]	183	mask_i = -1; mask_j = -1; mask_k = -1
[553]	184
[298]	185	!
	186	!-- Global arrays are required by define_netcdf_header.
[1031]	187	IF ( myid == 0 .OR. netcdf_data_format > 4 ) THEN
[1414]	188	ALLOCATE( mask_i_global(max_masks,nx+2), &
	189	mask_j_global(max_masks,ny+2), &
	190	mask_k_global(max_masks,nz+2) )
[298]	191	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	192	ENDIF
	193
	194	!
	195	!-- Determine variable names for each mask
	196	DO mid = 1, masks
	197	!
	198	!-- Append user-defined data output variables to the standard data output
	199	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	200	i = 1
	201	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	202	i = i + 1
	203	ENDDO
	204	j = 1
	205	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	206	IF ( i > 100 ) THEN
[3045]	207	WRITE ( message_string, * ) 'number of output quantitities ', &
	208	'given by data_output_mask and data_output_mask_user ', &
[298]	209	'exceeds the limit of 100'
[564]	210	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	211	ENDIF
	212	do_mask(mid,i) = do_mask_user(mid,j)
	213	i = i + 1
	214	j = j + 1
	215	ENDDO
	216	ENDIF
	217
	218	!
	219	!-- Check and set steering parameters for mask data output and averaging
	220	i = 1
[996]	221	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
[298]	222	!
	223	!-- Check for data averaging
	224	ilen = LEN_TRIM( do_mask(mid,i) )
	225	j = 0 ! no data averaging
	226	IF ( ilen > 3 ) THEN
	227	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	228	j = 1 ! data averaging
	229	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	230	ENDIF
	231	ENDIF
	232	var = TRIM( do_mask(mid,i) )
	233	!
	234	!-- Check for allowed value and set units
	235	SELECT CASE ( TRIM( var ) )
	236
	237	CASE ( 'e' )
	238	IF ( constant_diffusion ) THEN
[3045]	239	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[298]	240	'" requires constant_diffusion = .FALSE.'
[564]	241	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	242	ENDIF
	243	unit = 'm2/s2'
	244
[3421]	245	CASE ( 'thetal' )
[3274]	246	IF ( .NOT. bulk_cloud_model ) THEN
[3045]	247	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[3274]	248	'" requires bulk_cloud_model = .TRUE.'
[773]	249	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	250	ENDIF
	251	unit = 'K'
	252
[2292]	253	CASE ( 'nc' )
[3274]	254	IF ( .NOT. bulk_cloud_model ) THEN
[3045]	255	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[3274]	256	'" requires bulk_cloud_model = .TRUE.'
[2292]	257	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
	258	ELSEIF ( .NOT. microphysics_morrison ) THEN
[3045]	259	message_string = 'output of "' // TRIM( var ) // '" ' // &
	260	'requires = morrison'
[2292]	261	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	262	ENDIF
	263	unit = '1/m3'
	264
[1438]	265	CASE ( 'nr' )
[3274]	266	IF ( .NOT. bulk_cloud_model ) THEN
[3045]	267	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[3274]	268	'" requires bulk_cloud_model = .TRUE.'
[1438]	269	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	270	ELSEIF ( .NOT. microphysics_seifert ) THEN
[3045]	271	message_string = 'output of "' // TRIM( var ) // '"' // &
	272	'requires cloud_scheme = seifert_beheng'
[1438]	273	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	274	ENDIF
	275	unit = '1/m3'
	276
[298]	277	CASE ( 'pc', 'pr' )
	278	IF ( .NOT. particle_advection ) THEN
[3045]	279	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	280	'" requires a "particles_par"-NAMELIST in the ', &
[298]	281	'parameter file (PARIN)'
[564]	282	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	283	ENDIF
	284	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	285	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	286
[3421]	287	CASE ( 'q', 'thetav' )
[298]	288	IF ( .NOT. humidity ) THEN
[3045]	289	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[298]	290	'" requires humidity = .TRUE.'
[564]	291	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	292	ENDIF
	293	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
[3421]	294	IF ( TRIM( var ) == 'thetav' ) unit = 'K'
[298]	295
[1438]	296	CASE ( 'qc' )
[3274]	297	IF ( .NOT. bulk_cloud_model ) THEN
[3045]	298	message_string = 'output of "' // TRIM( var ) // '"' // &
[3274]	299	'requires bulk_cloud_model = .TRUE.'
[1438]	300	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
	301	ENDIF
	302	unit = 'kg/kg'
	303
[298]	304	CASE ( 'ql' )
[3274]	305	IF ( .NOT. ( bulk_cloud_model .OR. cloud_droplets ) ) THEN
[3045]	306	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[3274]	307	'" requires bulk_cloud_model = .TRUE. or ', &
	308	'cloud_droplets = .TRUE.'
[3045]	309	CALL message( 'init_masks', 'PA0106', 1, 2, 0, 6, 0 )
[298]	310	ENDIF
	311	unit = 'kg/kg'
	312
	313	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
	314	IF ( .NOT. cloud_droplets ) THEN
[3045]	315	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[298]	316	'" requires cloud_droplets = .TRUE.'
[564]	317	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	318	ENDIF
	319	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	320	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	321	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	322
	323	CASE ( 'qv' )
[3274]	324	IF ( .NOT. bulk_cloud_model ) THEN
[3045]	325	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[3274]	326	'" requires bulk_cloud_model = .TRUE.'
[564]	327	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	328	ENDIF
	329	unit = 'kg/kg'
	330
[1438]	331	CASE ( 'qr' )
[3274]	332	IF ( .NOT. bulk_cloud_model ) THEN
[3045]	333	message_string = 'output of "' // TRIM( var ) // '" ' // &
[3274]	334	'requires bulk_cloud_model = .TRUE.'
[1438]	335	CALL message( 'check_parameters', 'PA0108', 1, 2, 0, 6, 0 )
[1822]	336	ELSEIF ( .NOT. microphysics_seifert ) THEN
[3045]	337	message_string = 'output of "' // TRIM( var ) // '" ' // &
	338	'requires cloud_scheme = seifert_beheng'
[1438]	339	CALL message( 'check_parameters', 'PA0359', 1, 2, 0, 6, 0 )
	340	ENDIF
	341	unit = 'kg/kg'
	342
[3421]	343	CASE ( 'rho_sea_water' )
[3294]	344	IF ( .NOT. ocean_mode ) THEN
[3045]	345	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[3294]	346	'" requires ocean mode'
[564]	347	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	348	ENDIF
	349	unit = 'kg/m3'
	350
	351	CASE ( 's' )
	352	IF ( .NOT. passive_scalar ) THEN
[3045]	353	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[298]	354	'" requires passive_scalar = .TRUE.'
[564]	355	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	356	ENDIF
	357	unit = 'conc'
	358
	359	CASE ( 'sa' )
[3294]	360	IF ( .NOT. ocean_mode ) THEN
[3045]	361	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
[3294]	362	'" requires ocean mode'
[564]	363	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	364	ENDIF
	365	unit = 'psu'
	366
[3421]	367	CASE ( 'us', 't', 'lwp', 'pra', 'prr', 'z0', 'z0h*' )
[3045]	368	WRITE ( message_string, * ) 'illegal value for data_', &
	369	'output: "', TRIM( var ), '" is only allowed', &
[298]	370	'for horizontal cross section'
[564]	371	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	372
[3421]	373	CASE ( 'p', 'theta', 'u', 'v', 'w' )
[298]	374	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
[3421]	375	IF ( TRIM( var ) == 'theta' ) unit = 'K'
[298]	376	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	377	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	378	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	379	CONTINUE
	380
	381	CASE DEFAULT
[3687]	382	!
	383	!-- Allocate arrays for other modules
	384	CALL module_interface_init_masks( var, unit )
[298]	385
	386	IF ( unit == 'illegal' ) THEN
	387	IF ( do_mask_user(mid,1) /= ' ' ) THEN
[3045]	388	WRITE ( message_string, * ) 'illegal value for data_', &
	389	'output_masks or data_output_masks_user: "', &
[298]	390	TRIM( do_mask(mid,i) ), '"'
[3045]	391	CALL message( 'init_masks', 'PA0018', 1, 2, 0, 6, 0 )
[298]	392	ELSE
[3045]	393	WRITE ( message_string, * ) 'illegal value for data_', &
	394	' output_masks : "', TRIM( do_mask(mid,i) ), '"'
[564]	395	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	396	ENDIF
	397	ENDIF
	398
	399	END SELECT
	400	!
	401	!-- Set the internal steering parameters appropriately
	402	domask_no(mid,j) = domask_no(mid,j) + 1
	403	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	404	domask_unit(mid,j,domask_no(mid,j)) = unit
	405
	406	IF ( j == 1 ) THEN
	407	!
	408	!-- Check, if variable is already subject to averaging
	409	found = .FALSE.
	410	DO k = 1, doav_n
	411	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	412	ENDDO
	413
	414	IF ( .NOT. found ) THEN
	415	doav_n = doav_n + 1
	416	doav(doav_n) = var
	417	ENDIF
	418	ENDIF
	419
	420	i = i + 1
	421
	422	ENDDO ! do_mask(mid,i)
	423	ENDDO ! mid
	424
	425
	426	!
	427	!-- Determine mask locations for each mask
	428	DO mid = 1, masks
	429	!
	430	!-- Set local masks for each subdomain along all three dimensions
	431	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	432	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
[3435]	433	IF ( .NOT. mask_surface(mid) ) THEN
	434	CALL set_mask_locations( 3, dz(1), 'dz', nz, 'nz', nzb, nzt )
	435	ELSE
[298]	436	!
[3435]	437	!-- Set vertical mask locations and size in case of terrain-following
	438	!-- output
	439	count = 0
	440	DO WHILE ( mask_k_over_surface(mid, count+1) >= 0 )
	441	m = mask_k_over_surface(mid, count+1)
	442	IF ( m > nz+1 ) THEN
	443	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	444	m,' in mask ',mid,' along dimension ', 3, &
	445	' exceeds (nz+1) = ',nz+1
	446	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
	447	ENDIF
	448	count = count + 1
	449	mask_k(mid,count) = mask_k_over_surface(mid, count)
	450	IF ( count == mask_xyz_dimension ) EXIT
	451	ENDDO
	452	mask_start_l(mid,3) = 1
	453	mask_size(mid,3) = count
	454	mask_size_l(mid,3) = count
	455	ENDIF
	456	!
[298]	457	!-- Set global masks along all three dimensions (required by
	458	!-- define_netcdf_header).
[1804]	459	#if defined( __parallel )
[298]	460	!
	461	!-- PE0 receives partial arrays from all processors of the respective mask
	462	!-- and outputs them. Here a barrier has to be set, because otherwise
	463	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	464
[298]	465	CALL MPI_BARRIER( comm2d, ierr )
	466
	467	IF ( myid == 0 ) THEN
	468	!
	469	!-- Local arrays can be relocated directly.
	470	mask_i_global(mid,mask_start_l(mid,1): &
	471	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	472	mask_i(mid,:mask_size_l(mid,1))
	473	mask_j_global(mid,mask_start_l(mid,2): &
	474	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	475	mask_j(mid,:mask_size_l(mid,2))
	476	mask_k_global(mid,mask_start_l(mid,3): &
	477	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	478	mask_k(mid,:mask_size_l(mid,3))
	479	!
	480	!-- Receive data from all other PEs.
	481	DO n = 1, numprocs-1
	482	!
	483	!-- Receive index limits first, then arrays.
	484	!-- Index limits are received in arbitrary order from the PEs.
	485	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	486	comm2d, status, ierr )
	487	!
	488	!-- Not all PEs have data for the mask.
	489	IF ( ind(1) /= -9999 ) THEN
	490	sender = status(MPI_SOURCE)
	491	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	492	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	493	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	494	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	495	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	496	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	497	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	498	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	499	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	500	ENDIF
	501	ENDDO
	502
	503	ELSE
	504	!
	505	!-- If at least part of the mask resides on the PE, send the index limits
	506	!-- for the target array, otherwise send -9999 to PE0.
[996]	507	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	508	mask_size_l(mid,3) > 0 ) THEN
[298]	509	ind(1) = mask_start_l(mid,1)
	510	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	511	ind(3) = mask_start_l(mid,2)
	512	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	513	ind(5) = mask_start_l(mid,3)
	514	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	515	ELSE
	516	ind(1) = -9999; ind(2) = -9999
	517	ind(3) = -9999; ind(4) = -9999
	518	ind(5) = -9999; ind(6) = -9999
	519	ENDIF
	520	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	521	!
	522	!-- If applicable, send data to PE0.
	523	IF ( ind(1) /= -9999 ) THEN
	524	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	525	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	526	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	527	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	528	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	529	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	530	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	531	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	532	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	533	ENDIF
	534	ENDIF
	535	!
	536	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	537	!-- so that PE0 may receive wrong data on tag 0.
	538	CALL MPI_BARRIER( comm2d, ierr )
[409]	539
[1031]	540	IF ( netcdf_data_format > 4 ) THEN
[409]	541
[1414]	542	CALL MPI_BCAST( mask_i_global(mid,:), nx+2, MPI_INTEGER, 0, comm2d, &
[493]	543	ierr )
[1414]	544	CALL MPI_BCAST( mask_j_global(mid,:), ny+2, MPI_INTEGER, 0, comm2d, &
[493]	545	ierr )
[1414]	546	CALL MPI_BCAST( mask_k_global(mid,:), nz+2, MPI_INTEGER, 0, comm2d, &
[493]	547	ierr )
[1682]	548
[409]	549	ENDIF
[298]	550
[1804]	551	#else
[298]	552	!
	553	!-- Local arrays can be relocated directly.
	554	mask_i_global(mid,:) = mask_i(mid,:)
	555	mask_j_global(mid,:) = mask_j(mid,:)
	556	mask_k_global(mid,:) = mask_k(mid,:)
	557	#endif
	558	ENDDO ! mid
	559
	560	DEALLOCATE( tmp_array )
	561	!
	562	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	563	!-- required for header output on PE 0.
	564	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	565
	566	CONTAINS
[493]	567
[298]	568	!------------------------------------------------------------------------------!
	569	! Description:
	570	! ------------
[1682]	571	!> Set local mask for each subdomain along 'dim' direction.
[298]	572	!------------------------------------------------------------------------------!
[1682]	573	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	574	lb, ub )
[298]	575
	576	IMPLICIT NONE
	577
[1682]	578	CHARACTER (LEN=2) :: dxyz_string !<
	579	CHARACTER (LEN=2) :: nxyz_string !<
[1320]	580
[1682]	581	INTEGER(iwp) :: count !<
	582	INTEGER(iwp) :: count_l !<
	583	INTEGER(iwp) :: dim !<
	584	INTEGER(iwp) :: m !<
	585	INTEGER(iwp) :: loop_begin !<
	586	INTEGER(iwp) :: loop_end !<
	587	INTEGER(iwp) :: loop_stride !<
	588	INTEGER(iwp) :: lb !<
	589	INTEGER(iwp) :: nxyz !<
	590	INTEGER(iwp) :: ub !<
[1320]	591
[1682]	592	REAL(wp) :: dxyz !<
	593	REAL(wp) :: ddxyz !<
	594	REAL(wp) :: tmp1 !<
	595	REAL(wp) :: tmp2 !<
[298]	596
[1353]	597	count = 0; count_l = 0
	598	ddxyz = 1.0_wp / dxyz
	599	tmp1 = 0.0_wp
	600	tmp2 = 0.0_wp
[298]	601
[1353]	602	IF ( mask(mid,dim,1) >= 0.0_wp ) THEN
[298]	603	!
	604	!-- use predefined mask_* array
[1353]	605	DO WHILE ( mask(mid,dim,count+1) >= 0.0_wp )
[298]	606	count = count + 1
	607	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	608	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz - 0.5_wp )
[1414]	609	IF ( m < 0 ) m = 0 ! avoid negative values
[298]	610	ELSEIF ( dim == 3 ) THEN
	611	ind_array = &
[595]	612	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	613	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	614	ENDIF
[1414]	615	IF ( m > (nxyz+1) ) THEN
[3045]	616	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	617	m,' in mask ',mid,' along dimension ',dim, &
[1414]	618	' exceeds (',nxyz_string,'+1) = ',nxyz+1
[564]	619	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	620	ENDIF
[1414]	621	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	622	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	623	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	624	count_l = count_l + 1
	625	IF ( dim == 1 ) THEN
	626	mask_i(mid,count_l) = m
	627	ELSEIF ( dim == 2 ) THEN
	628	mask_j(mid,count_l) = m
	629	ELSEIF ( dim == 3 ) THEN
	630	mask_k(mid,count_l) = m
	631	ENDIF
	632	ENDIF
	633	IF ( count == mask_xyz_dimension ) EXIT
	634	ENDDO
	635	mask_size(mid,dim) = count
	636	mask_size_l(mid,dim) = count_l
	637
	638	ELSE
	639	!
	640	!-- use predefined mask_loop_* array, or use the default (all grid points
	641	!-- along this direction)
[1353]	642	IF ( mask_loop(mid,dim,1) < 0.0_wp ) THEN
[298]	643	tmp1 = mask_loop(mid,dim,1)
[1186]	644	mask_loop(mid,dim,1) = zw(nzb) ! lowest level (default)
[298]	645	ENDIF
	646	IF ( dim == 1 .OR. dim == 2 ) THEN
[1353]	647	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	648	tmp2 = mask_loop(mid,dim,2)
[3512]	649	mask_loop(mid,dim,2) = nxyz*dxyz / mask_scale(dim) ! (default)
[298]	650	ENDIF
	651	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	652	> (nxyz+1) * dxyz / mask_scale(dim) ) THEN
[303]	653	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
[3045]	654	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
[303]	655	' and/or mask_loop(',mid,',',dim,',2)=', &
[3045]	656	mask_loop(mid,dim,2),' exceed (', &
	657	nxyz_string,'+1)*',dxyz_string,'/mask_scale(',dim,')=', &
[1414]	658	(nxyz+1)*dxyz/mask_scale(dim)
[564]	659	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	660	ENDIF
[3045]	661	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) &
[1353]	662	* ddxyz - 0.5_wp )
[3045]	663	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) &
[1353]	664	* ddxyz - 0.5_wp )
[3045]	665	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) &
[1032]	666	* ddxyz )
[1414]	667	IF ( loop_begin == -1 ) loop_begin = 0 ! avoid negative values
[298]	668	ELSEIF ( dim == 3 ) THEN
[1353]	669	IF ( mask_loop(mid,dim,2) < 0.0_wp ) THEN
[298]	670	tmp2 = mask_loop(mid,dim,2)
[1414]	671	mask_loop(mid,dim,2) = zu(nz+1) / mask_scale(dim) ! (default)
[298]	672	ENDIF
	673	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[1414]	674	> zu(nz+1) / mask_scale(dim) ) THEN
[3045]	675	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	676	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
[303]	677	' and/or mask_loop(',mid,',',dim,',2)=', &
[3045]	678	mask_loop(mid,dim,2),' exceed zu(nz+1)/mask_scale(',dim, &
[1414]	679	')=',zu(nz+1)/mask_scale(dim)
[564]	680	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	681	ENDIF
[303]	682	ind_array = &
[595]	683	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	684	loop_begin = &
[303]	685	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	686	ind_array = &
[595]	687	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	688	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	689	!
[303]	690	!-- The following line assumes a constant vertical grid spacing within
	691	!-- the vertical mask range; it fails for vertical grid stretching.
[3065]	692	!-- Maybe revise later. Issue warning but continue execution. ABS(...)
	693	!-- within the IF statement is necessary because the default value of
	694	!-- dz_stretch_level_start is -9999999.9_wp.
[303]	695	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	696
[3065]	697	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > &
	698	ABS( dz_stretch_level_start(1) ) ) THEN
[3045]	699	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	700	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2), &
[3065]	701	' exceeds dz_stretch_level=',dz_stretch_level_start(1), &
[3046]	702	'.&Vertical mask locations will not ', &
[3045]	703	'match the desired heights within the stretching ', &
[2271]	704	'region.'
[564]	705	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	706	ENDIF
	707
[298]	708	ENDIF
	709	!
	710	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
[1353]	711	IF ( tmp1 < 0.0_wp ) mask_loop(mid,dim,1) = tmp1
	712	IF ( tmp2 < 0.0_wp ) mask_loop(mid,dim,2) = tmp2
[298]	713	!
	714	!-- The default stride +/-1 (every grid point) applies if
	715	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	716	IF ( loop_stride == 0 ) THEN
	717	IF ( loop_end >= loop_begin ) THEN
	718	loop_stride = 1
	719	ELSE
	720	loop_stride = -1
	721	ENDIF
	722	ENDIF
	723	DO m = loop_begin, loop_end, loop_stride
	724	count = count + 1
[1414]	725	IF ( ( m >= lb .AND. m <= ub ) .OR. &
	726	( m == (nxyz+1) .AND. ub == nxyz ) ) THEN
[298]	727	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	728	count_l = count_l + 1
	729	IF ( dim == 1 ) THEN
	730	mask_i(mid,count_l) = m
	731	ELSEIF ( dim == 2 ) THEN
	732	mask_j(mid,count_l) = m
	733	ELSEIF ( dim == 3 ) THEN
	734	mask_k(mid,count_l) = m
	735	ENDIF
	736	ENDIF
	737	ENDDO
	738	mask_size(mid,dim) = count
	739	mask_size_l(mid,dim) = count_l
[1414]	740
[298]	741	ENDIF
	742
	743	END SUBROUTINE set_mask_locations
	744
	745	END SUBROUTINE init_masks

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