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source: palm/trunk/SOURCE/init_masks.f90 @ 808

Last change on this file since 808 was 808, checked in by maronga, 12 years ago
last commit documented
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[298]	1	SUBROUTINE init_masks
	2
	3	!------------------------------------------------------------------------------!
[484]	4	! Current revisions:
[298]	5	! -----------------
	6	!
[808]	7	!
[298]	8	! Former revisions:
	9	! -----------------
	10	! $Id: init_masks.f90 808 2012-01-25 12:02:30Z maronga $
	11	!
[808]	12	! 807 2012-01-25 11:53:51Z maronga
	13	! New cpp directive "__check" implemented which is used by check_namelist_files
	14	!
[772]	15	! 771 2011-10-27 10:56:21Z heinze
	16	! +lpt
	17	!
[596]	18	! 595 2010-11-12 09:52:10Z helmke
	19	! Calculation of z locations for masked output changed
	20	!
[565]	21	! 564 2010-09-30 13:18:59Z helmke
	22	! assignment of mask_xyz_loop added, palm message identifiers of masked output
	23	! changed
	24	!
[558]	25	! 557 2010-09-07 14:50:07Z weinreis
	26	! bugfix message string in set_mask_locations
	27	!
[554]	28	! 553 2010-09-01 14:09:06Z weinreis
	29	! parameters for masked output are replaced by arrays
	30	!
[494]	31	! 493 2010-03-01 08:30:24Z raasch
	32	! netcdf_format_mask* and format_parallel_io replaced by netcdf_data_format
	33	!
[449]	34	! 410 2009-12-04 17:05:40Z letzel
	35	! Initial revision
[298]	36	!
[449]	37	!
[298]	38	! Description:
	39	! ------------
	40	! Initialize masked data output
	41	!------------------------------------------------------------------------------!
	42
	43	USE arrays_3d
	44	USE control_parameters
	45	USE grid_variables
	46	USE indices
	47	USE netcdf_control
	48	USE particle_attributes
	49	USE pegrid
	50
	51	IMPLICIT NONE
	52
	53	CHARACTER (LEN=6) :: var
	54	CHARACTER (LEN=7) :: unit
	55	CHARACTER (LEN=10), DIMENSION(max_masks,100) :: do_mask, do_mask_user
	56
	57	INTEGER :: i, ilen, ind(6), ind_array(1), j, k, n, sender
	58	INTEGER, DIMENSION(:), ALLOCATABLE :: tmp_array
	59
	60	LOGICAL :: found
	61	!
	62	!-- Allocation and initialization
	63	ALLOCATE( tmp_array( MAX(nx,ny,nz)+1 ) )
	64
	65	ALLOCATE( mask_i(max_masks,nxr-nxl+1), &
	66	mask_j(max_masks,nyn-nys+1), &
	67	mask_k(max_masks,nzt-nzb+1) )
	68	!
	69	!-- internal mask arrays ("mask,dimension,selection")
	70	ALLOCATE( mask(max_masks,3,mask_xyz_dimension), &
	71	mask_loop(max_masks,3,3) )
[493]	72
[298]	73	!
[493]	74	!-- Parallel mask output not yet tested
	75	IF ( netcdf_data_format > 2 ) THEN
	76	message_string = 'NetCDF file formats '// &
	77	'3 (NetCDF 4) and 4 (NetCDF 4 Classic model)'// &
	78	'&are currently not supported (not yet tested).'
[564]	79	CALL message( 'init_masks', 'PA0328', 1, 2, 0, 6, 0 )
[298]	80	ENDIF
[553]	81
[298]	82	!
	83	!-- Store data output parameters for masked data output in few shared arrays
[553]	84	DO mid = 1, masks
[564]	85
[553]	86	do_mask (mid,:) = data_output_masks(mid,:)
	87	do_mask_user(mid,:) = data_output_masks_user(mid,:)
	88	mask (mid,1,:) = mask_x(mid,:)
	89	mask (mid,2,:) = mask_y(mid,:)
	90	mask (mid,3,:) = mask_z(mid,:)
[564]	91
	92	IF ( mask_x_loop(mid,1) == -1.0 .AND. mask_x_loop(mid,2) == -1.0 &
	93	.AND. mask_x_loop(mid,3) == -1.0 ) THEN
	94	mask_loop(mid,1,1:2) = -1.0
	95	mask_loop(mid,1,3) = 0.0
	96	ELSE
	97	mask_loop(mid,1,:) = mask_x_loop(mid,:)
	98	ENDIF
	99	IF ( mask_y_loop(mid,1) == -1.0 .AND. mask_y_loop(mid,2) == -1.0 &
	100	.AND. mask_y_loop(mid,3) == -1.0 ) THEN
	101	mask_loop(mid,2,1:2) = -1.0
	102	mask_loop(mid,2,3) = 0.0
	103	ELSE
	104	mask_loop(mid,2,:) = mask_y_loop(mid,:)
	105	ENDIF
	106	IF ( mask_z_loop(mid,1) == -1.0 .AND. mask_z_loop(mid,2) == -1.0 &
	107	.AND. mask_z_loop(mid,3) == -1.0 ) THEN
	108	mask_loop(mid,3,1:2) = -1.0
	109	mask_loop(mid,3,3) = 0.0
	110	ELSE
	111	mask_loop(mid,3,:) = mask_z_loop(mid,:)
	112	ENDIF
	113
[553]	114	ENDDO
	115
[298]	116	mask_i = -1; mask_j = -1; mask_k = -1
[553]	117
[298]	118	!
	119	!-- Global arrays are required by define_netcdf_header.
[493]	120	IF ( myid == 0 .OR. netcdf_data_format > 2 ) THEN
[298]	121	ALLOCATE( mask_i_global(max_masks,nx+1), &
	122	mask_j_global(max_masks,ny+1), &
	123	mask_k_global(max_masks,nz+1) )
	124	mask_i_global = -1; mask_j_global = -1; mask_k_global = -1
	125	ENDIF
	126
	127	!
	128	!-- Determine variable names for each mask
	129	DO mid = 1, masks
	130	!
	131	!-- Append user-defined data output variables to the standard data output
	132	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	133	i = 1
	134	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	135	i = i + 1
	136	ENDDO
	137	j = 1
	138	DO WHILE ( do_mask_user(mid,j) /= ' ' .AND. j <= 100 )
	139	IF ( i > 100 ) THEN
	140	WRITE ( message_string, * ) 'number of output quantitities ', &
	141	'given by data_output_mask and data_output_mask_user ', &
	142	'exceeds the limit of 100'
[564]	143	CALL message( 'init_masks', 'PA0329', 1, 2, 0, 6, 0 )
[298]	144	ENDIF
	145	do_mask(mid,i) = do_mask_user(mid,j)
	146	i = i + 1
	147	j = j + 1
	148	ENDDO
	149	ENDIF
	150
	151	!
	152	!-- Check and set steering parameters for mask data output and averaging
	153	i = 1
	154	DO WHILE ( do_mask(mid,i) /= ' ' .AND. i <= 100 )
	155	!
	156	!-- Check for data averaging
	157	ilen = LEN_TRIM( do_mask(mid,i) )
	158	j = 0 ! no data averaging
	159	IF ( ilen > 3 ) THEN
	160	IF ( do_mask(mid,i)(ilen-2:ilen) == '_av' ) THEN
	161	j = 1 ! data averaging
	162	do_mask(mid,i) = do_mask(mid,i)(1:ilen-3)
	163	ENDIF
	164	ENDIF
	165	var = TRIM( do_mask(mid,i) )
	166	!
	167	!-- Check for allowed value and set units
	168	SELECT CASE ( TRIM( var ) )
	169
	170	CASE ( 'e' )
	171	IF ( constant_diffusion ) THEN
	172	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	173	'" requires constant_diffusion = .FALSE.'
[564]	174	CALL message( 'init_masks', 'PA0103', 1, 2, 0, 6, 0 )
[298]	175	ENDIF
	176	unit = 'm2/s2'
	177
[771]	178	CASE ( 'lpt' )
	179	IF ( .NOT. cloud_physics ) THEN
	180	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	181	'" requires cloud_physics = .TRUE.'
[773]	182	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[771]	183	ENDIF
	184	unit = 'K'
	185
[298]	186	CASE ( 'pc', 'pr' )
	187	IF ( .NOT. particle_advection ) THEN
	188	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	189	'" requires a "particles_par"-NAMELIST in the ', &
	190	'parameter file (PARIN)'
[564]	191	CALL message( 'init_masks', 'PA0104', 1, 2, 0, 6, 0 )
[298]	192	ENDIF
	193	IF ( TRIM( var ) == 'pc' ) unit = 'number'
	194	IF ( TRIM( var ) == 'pr' ) unit = 'm'
	195
	196	CASE ( 'q', 'vpt' )
	197	IF ( .NOT. humidity ) THEN
	198	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	199	'" requires humidity = .TRUE.'
[564]	200	CALL message( 'init_masks', 'PA0105', 1, 2, 0, 6, 0 )
[298]	201	ENDIF
	202	IF ( TRIM( var ) == 'q' ) unit = 'kg/kg'
	203	IF ( TRIM( var ) == 'vpt' ) unit = 'K'
	204
	205	CASE ( 'ql' )
	206	IF ( .NOT. ( cloud_physics .OR. cloud_droplets ) ) THEN
	207	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	208	'" requires cloud_physics = .TRUE. or cloud_droplets', &
	209	' = .TRUE.'
[564]	210	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	211	ENDIF
	212	unit = 'kg/kg'
	213
	214	CASE ( 'ql_c', 'ql_v', 'ql_vp' )
	215	IF ( .NOT. cloud_droplets ) THEN
	216	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	217	'" requires cloud_droplets = .TRUE.'
[564]	218	CALL message( 'init_masks', 'PA0107', 1, 2, 0, 6, 0 )
[298]	219	ENDIF
	220	IF ( TRIM( var ) == 'ql_c' ) unit = 'kg/kg'
	221	IF ( TRIM( var ) == 'ql_v' ) unit = 'm3'
	222	IF ( TRIM( var ) == 'ql_vp' ) unit = 'none'
	223
	224	CASE ( 'qv' )
	225	IF ( .NOT. cloud_physics ) THEN
	226	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	227	'" requires cloud_physics = .TRUE.'
[564]	228	CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	229	ENDIF
	230	unit = 'kg/kg'
	231
	232	CASE ( 'rho' )
	233	IF ( .NOT. ocean ) THEN
	234	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	235	'" requires ocean = .TRUE.'
[564]	236	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	237	ENDIF
	238	unit = 'kg/m3'
	239
	240	CASE ( 's' )
	241	IF ( .NOT. passive_scalar ) THEN
	242	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	243	'" requires passive_scalar = .TRUE.'
[564]	244	CALL message( 'init_masks', 'PA0110', 1, 2, 0, 6, 0 )
[298]	245	ENDIF
	246	unit = 'conc'
	247
	248	CASE ( 'sa' )
	249	IF ( .NOT. ocean ) THEN
	250	WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	251	'" requires ocean = .TRUE.'
[564]	252	CALL message( 'init_masks', 'PA0109', 1, 2, 0, 6, 0 )
[298]	253	ENDIF
	254	unit = 'psu'
	255
	256	CASE ( 'u', 't', 'lwp', 'pra', 'prr', 'z0' )
	257	WRITE ( message_string, * ) 'illegal value for data_',&
	258	'output: "', TRIM( var ), '" is only allowed', &
	259	'for horizontal cross section'
[564]	260	CALL message( 'init_masks', 'PA0111', 1, 2, 0, 6, 0 )
[298]	261	! IF ( TRIM( var ) == 'lwp*' .AND. .NOT. cloud_physics ) THEN
	262	! WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	263	! '" requires cloud_physics = .TRUE.'
[564]	264	! CALL message( 'init_masks', 'PA0108', 1, 2, 0, 6, 0 )
[298]	265	! ENDIF
	266	! IF ( TRIM( var ) == 'pra*' .AND. .NOT. precipitation ) THEN
	267	! WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	268	! '" requires precipitation = .TRUE.'
[564]	269	! CALL message( 'init_masks', 'PA0112', 1, 2, 0, 6, 0 )
[298]	270	! ENDIF
	271	! IF ( TRIM( var ) == 'pra*' .AND. j == 1 ) THEN
	272	! WRITE ( message_string, * ) 'temporal averaging of ', &
	273	! ' precipitation amount "', TRIM( var ), &
	274	! '" not possible'
[564]	275	! CALL message( 'init_masks', 'PA0113', 1, 2, 0, 6, 0 )
[298]	276	! ENDIF
	277	! IF ( TRIM( var ) == 'prr*' .AND. .NOT. precipitation ) THEN
	278	! WRITE ( message_string, * ) 'output of "', TRIM( var ), &
	279	! '" requires precipitation = .TRUE.'
[564]	280	! CALL message( 'init_masks', 'PA0112', 1, 2, 0, 6, 0 )
[298]	281	! ENDIF
	282	!
	283	! IF ( TRIM( var ) == 'u*' ) unit = 'm/s'
	284	! IF ( TRIM( var ) == 't*' ) unit = 'K'
	285	! IF ( TRIM( var ) == 'lwp' ) unit = 'kg/kgm'
	286	! IF ( TRIM( var ) == 'pra*' ) unit = 'mm'
	287	! IF ( TRIM( var ) == 'prr*' ) unit = 'mm/s'
	288	! IF ( TRIM( var ) == 'z0*' ) unit = 'm'
	289
	290	CASE ( 'p', 'pt', 'u', 'v', 'w' )
	291	IF ( TRIM( var ) == 'p' ) unit = 'Pa'
	292	IF ( TRIM( var ) == 'pt' ) unit = 'K'
	293	IF ( TRIM( var ) == 'u' ) unit = 'm/s'
	294	IF ( TRIM( var ) == 'v' ) unit = 'm/s'
	295	IF ( TRIM( var ) == 'w' ) unit = 'm/s'
	296	CONTINUE
	297
	298	CASE DEFAULT
	299	CALL user_check_data_output( var, unit )
	300
	301	IF ( unit == 'illegal' ) THEN
	302	IF ( do_mask_user(mid,1) /= ' ' ) THEN
	303	WRITE ( message_string, * ) 'illegal value for data_',&
	304	'output or data_output_user: "', &
	305	TRIM( do_mask(mid,i) ), '"'
[564]	306	CALL message( 'init_masks', 'PA0114', 1, 2, 0, 6, 0 )
[298]	307	ELSE
	308	WRITE ( message_string, * ) 'illegal value for data_',&
	309	'output: "', TRIM( do_mask(mid,i) ), '"'
[564]	310	CALL message( 'init_masks', 'PA0330', 1, 2, 0, 6, 0 )
[298]	311	ENDIF
	312	ENDIF
	313
	314	END SELECT
	315	!
	316	!-- Set the internal steering parameters appropriately
	317	domask_no(mid,j) = domask_no(mid,j) + 1
	318	domask(mid,j,domask_no(mid,j)) = do_mask(mid,i)
	319	domask_unit(mid,j,domask_no(mid,j)) = unit
	320
	321	IF ( j == 1 ) THEN
	322	!
	323	!-- Check, if variable is already subject to averaging
	324	found = .FALSE.
	325	DO k = 1, doav_n
	326	IF ( TRIM( doav(k) ) == TRIM( var ) ) found = .TRUE.
	327	ENDDO
	328
	329	IF ( .NOT. found ) THEN
	330	doav_n = doav_n + 1
	331	doav(doav_n) = var
	332	ENDIF
	333	ENDIF
	334
	335	i = i + 1
	336
	337	ENDDO ! do_mask(mid,i)
	338	ENDDO ! mid
	339
	340
	341	!
	342	!-- Determine mask locations for each mask
	343	DO mid = 1, masks
	344	!
	345	!-- Set local masks for each subdomain along all three dimensions
	346	CALL set_mask_locations( 1, dx, 'dx', nx, 'nx', nxl, nxr )
	347	CALL set_mask_locations( 2, dy, 'dy', ny, 'ny', nys, nyn )
	348	CALL set_mask_locations( 3, dz, 'dz', nz, 'nz', nzb, nzt )
	349	!
	350	!-- Set global masks along all three dimensions (required by
	351	!-- define_netcdf_header).
[807]	352	#if defined( __parallel ) .AND. .NOT. defined ( __check )
[298]	353	!
	354	!-- PE0 receives partial arrays from all processors of the respective mask
	355	!-- and outputs them. Here a barrier has to be set, because otherwise
	356	!-- "-MPI- FATAL: Remote protocol queue full" may occur.
[807]	357
[298]	358	CALL MPI_BARRIER( comm2d, ierr )
	359
	360	IF ( myid == 0 ) THEN
	361	!
	362	!-- Local arrays can be relocated directly.
	363	mask_i_global(mid,mask_start_l(mid,1): &
	364	mask_start_l(mid,1)+mask_size_l(mid,1)-1) = &
	365	mask_i(mid,:mask_size_l(mid,1))
	366	mask_j_global(mid,mask_start_l(mid,2): &
	367	mask_start_l(mid,2)+mask_size_l(mid,2)-1) = &
	368	mask_j(mid,:mask_size_l(mid,2))
	369	mask_k_global(mid,mask_start_l(mid,3): &
	370	mask_start_l(mid,3)+mask_size_l(mid,3)-1) = &
	371	mask_k(mid,:mask_size_l(mid,3))
	372	!
	373	!-- Receive data from all other PEs.
	374	DO n = 1, numprocs-1
	375	!
	376	!-- Receive index limits first, then arrays.
	377	!-- Index limits are received in arbitrary order from the PEs.
	378	CALL MPI_RECV( ind(1), 6, MPI_INTEGER, MPI_ANY_SOURCE, 0, &
	379	comm2d, status, ierr )
	380	!
	381	!-- Not all PEs have data for the mask.
	382	IF ( ind(1) /= -9999 ) THEN
	383	sender = status(MPI_SOURCE)
	384	CALL MPI_RECV( tmp_array(ind(1)), ind(2)-ind(1)+1, &
[363]	385	MPI_INTEGER, sender, 1, comm2d, status, ierr )
[298]	386	mask_i_global(mid,ind(1):ind(2)) = tmp_array(ind(1):ind(2))
	387	CALL MPI_RECV( tmp_array(ind(3)), ind(4)-ind(3)+1, &
[363]	388	MPI_INTEGER, sender, 2, comm2d, status, ierr )
[298]	389	mask_j_global(mid,ind(3):ind(4)) = tmp_array(ind(3):ind(4))
	390	CALL MPI_RECV( tmp_array(ind(5)), ind(6)-ind(5)+1, &
[363]	391	MPI_INTEGER, sender, 3, comm2d, status, ierr )
[298]	392	mask_k_global(mid,ind(5):ind(6)) = tmp_array(ind(5):ind(6))
	393	ENDIF
	394	ENDDO
	395
	396	ELSE
	397	!
	398	!-- If at least part of the mask resides on the PE, send the index limits
	399	!-- for the target array, otherwise send -9999 to PE0.
	400	IF ( mask_size_l(mid,1) > 0 .AND. mask_size_l(mid,2) > 0 .AND. &
	401	mask_size_l(mid,3) > 0 ) &
	402	THEN
	403	ind(1) = mask_start_l(mid,1)
	404	ind(2) = mask_start_l(mid,1) + mask_size_l(mid,1) - 1
	405	ind(3) = mask_start_l(mid,2)
	406	ind(4) = mask_start_l(mid,2) + mask_size_l(mid,2) - 1
	407	ind(5) = mask_start_l(mid,3)
	408	ind(6) = mask_start_l(mid,3) + mask_size_l(mid,3) - 1
	409	ELSE
	410	ind(1) = -9999; ind(2) = -9999
	411	ind(3) = -9999; ind(4) = -9999
	412	ind(5) = -9999; ind(6) = -9999
	413	ENDIF
	414	CALL MPI_SEND( ind(1), 6, MPI_INTEGER, 0, 0, comm2d, ierr )
	415	!
	416	!-- If applicable, send data to PE0.
	417	IF ( ind(1) /= -9999 ) THEN
	418	tmp_array(:mask_size_l(mid,1)) = mask_i(mid,:mask_size_l(mid,1))
	419	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,1), &
[363]	420	MPI_INTEGER, 0, 1, comm2d, ierr )
[298]	421	tmp_array(:mask_size_l(mid,2)) = mask_j(mid,:mask_size_l(mid,2))
	422	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,2), &
[363]	423	MPI_INTEGER, 0, 2, comm2d, ierr )
[298]	424	tmp_array(:mask_size_l(mid,3)) = mask_k(mid,:mask_size_l(mid,3))
	425	CALL MPI_SEND( tmp_array(1), mask_size_l(mid,3), &
[363]	426	MPI_INTEGER, 0, 3, comm2d, ierr )
[298]	427	ENDIF
	428	ENDIF
	429	!
	430	!-- A barrier has to be set, because otherwise some PEs may proceed too fast
	431	!-- so that PE0 may receive wrong data on tag 0.
	432	CALL MPI_BARRIER( comm2d, ierr )
[409]	433
[493]	434	IF ( netcdf_data_format > 2 ) THEN
[409]	435
[493]	436	CALL MPI_BCAST( mask_i_global(mid,:), nx+1, MPI_INTEGER, 0, comm2d, &
	437	ierr )
	438	CALL MPI_BCAST( mask_j_global(mid,:), ny+1, MPI_INTEGER, 0, comm2d, &
	439	ierr )
	440	CALL MPI_BCAST( mask_k_global(mid,:), nz+1, MPI_INTEGER, 0, comm2d, &
	441	ierr )
[409]	442
	443	ENDIF
[298]	444
[807]	445	#elif .NOT. defined ( __parallel )
[298]	446	!
	447	!-- Local arrays can be relocated directly.
	448	mask_i_global(mid,:) = mask_i(mid,:)
	449	mask_j_global(mid,:) = mask_j(mid,:)
	450	mask_k_global(mid,:) = mask_k(mid,:)
	451	#endif
	452	ENDDO ! mid
	453
	454	DEALLOCATE( tmp_array )
	455	!
	456	!-- Internal mask arrays cannot be deallocated on PE 0 because they are
	457	!-- required for header output on PE 0.
	458	IF ( myid /= 0 ) DEALLOCATE( mask, mask_loop )
	459
	460	CONTAINS
[493]	461
[298]	462	SUBROUTINE set_mask_locations( dim, dxyz, dxyz_string, nxyz, nxyz_string, &
	463	lb, ub )
	464	!------------------------------------------------------------------------------!
	465	!
	466	! Description:
	467	! ------------
	468	! Set local mask for each subdomain along 'dim' direction.
	469	!------------------------------------------------------------------------------!
	470
	471	IMPLICIT NONE
	472
	473	CHARACTER (LEN=2) :: dxyz_string, nxyz_string
	474	INTEGER :: count, count_l, dim, m, loop_begin, loop_end, loop_stride, &
	475	lb, nxyz, ub
	476	REAL :: dxyz, ddxyz, tmp1, tmp2
	477
	478	count = 0; count_l = 0; ddxyz = 1.0 / dxyz; tmp1 = 0.0; tmp2 = 0.0
	479
	480	IF ( mask(mid,dim,1) >= 0.0 ) THEN
	481	!
	482	!-- use predefined mask_* array
	483	DO WHILE ( mask(mid,dim,count+1) >= 0.0 )
	484	count = count + 1
	485	IF ( dim == 1 .OR. dim == 2 ) THEN
[303]	486	m = NINT( mask(mid,dim,count) * mask_scale(dim) * ddxyz )
[298]	487	ELSEIF ( dim == 3 ) THEN
	488	ind_array = &
[595]	489	MINLOC( ABS( mask(mid,dim,count) * mask_scale(dim) - zu ) )
[298]	490	m = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	491	ENDIF
	492	IF ( m > nxyz ) THEN
[303]	493	WRITE ( message_string, '(I3,A,I3,A,I1,3A,I3)' ) &
	494	m,' in mask ',mid,' along dimension ',dim, &
	495	' exceeds ',nxyz_string,' = ',nxyz
[564]	496	CALL message( 'init_masks', 'PA0331', 1, 2, 0, 6, 0 )
[298]	497	ENDIF
	498	IF ( m >= lb .AND. m <= ub ) THEN
	499	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	500	count_l = count_l + 1
	501	IF ( dim == 1 ) THEN
	502	mask_i(mid,count_l) = m
	503	ELSEIF ( dim == 2 ) THEN
	504	mask_j(mid,count_l) = m
	505	ELSEIF ( dim == 3 ) THEN
	506	mask_k(mid,count_l) = m
	507	ENDIF
	508	ENDIF
	509	IF ( count == mask_xyz_dimension ) EXIT
	510	ENDDO
	511	mask_size(mid,dim) = count
	512	mask_size_l(mid,dim) = count_l
	513
	514	ELSE
	515	!
	516	!-- use predefined mask_loop_* array, or use the default (all grid points
	517	!-- along this direction)
	518	IF ( mask_loop(mid,dim,1) < 0.0 ) THEN
	519	tmp1 = mask_loop(mid,dim,1)
	520	mask_loop(mid,dim,1) = 0.0 ! (default)
	521	ENDIF
	522	IF ( dim == 1 .OR. dim == 2 ) THEN
	523	IF ( mask_loop(mid,dim,2) < 0.0 ) THEN
	524	tmp2 = mask_loop(mid,dim,2)
[303]	525	mask_loop(mid,dim,2) = nxyz*dxyz / mask_scale(dim) ! (default)
[298]	526	ENDIF
	527	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[303]	528	> nxyz * dxyz / mask_scale(dim) ) THEN
	529	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),5A,I1,A,F9.3)' ) &
	530	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	531	' and/or mask_loop(',mid,',',dim,',2)=', &
	532	mask_loop(mid,dim,2),'&exceed ', &
	533	nxyz_string,'*',dxyz_string,'/mask_scale(',dim,')=', &
	534	nxyz*dxyz/mask_scale(dim)
[564]	535	CALL message( 'init_masks', 'PA0332', 1, 2, 0, 6, 0 )
[298]	536	ENDIF
[303]	537	loop_begin = NINT( mask_loop(mid,dim,1) * mask_scale(dim) * ddxyz )
	538	loop_end = NINT( mask_loop(mid,dim,2) * mask_scale(dim) * ddxyz )
	539	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
[298]	540	ELSEIF ( dim == 3 ) THEN
	541	IF ( mask_loop(mid,dim,2) < 0.0 ) THEN
	542	tmp2 = mask_loop(mid,dim,2)
[595]	543	mask_loop(mid,dim,2) = zu(nz) / mask_scale(dim) ! (default)
[298]	544	ENDIF
	545	IF ( MAXVAL( mask_loop(mid,dim,1:2) ) &
[595]	546	> zu(nz) / mask_scale(dim) ) THEN
[303]	547	WRITE ( message_string, '(2(A,I3,A,I1,A,F9.3),A,I1,A,F9.3)' ) &
	548	'mask_loop(',mid,',',dim,',1)=',mask_loop(mid,dim,1), &
	549	' and/or mask_loop(',mid,',',dim,',2)=', &
[595]	550	mask_loop(mid,dim,2),'&exceed zu(nz)/mask_scale(',dim, &
	551	')=',zu(nz)/mask_scale(dim)
[564]	552	CALL message( 'init_masks', 'PA0333', 1, 2, 0, 6, 0 )
[298]	553	ENDIF
[303]	554	ind_array = &
[595]	555	MINLOC( ABS( mask_loop(mid,dim,1) * mask_scale(dim) - zu ) )
[298]	556	loop_begin = &
[303]	557	ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	558	ind_array = &
[595]	559	MINLOC( ABS( mask_loop(mid,dim,2) * mask_scale(dim) - zu ) )
[298]	560	loop_end = ind_array(1) - 1 + nzb ! MINLOC uses lower array bound 1
	561	!
[303]	562	!-- The following line assumes a constant vertical grid spacing within
	563	!-- the vertical mask range; it fails for vertical grid stretching.
	564	!-- Maybe revise later. Issue warning but continue execution.
	565	loop_stride = NINT( mask_loop(mid,dim,3) * mask_scale(dim) * ddxyz )
	566
	567	IF ( mask_loop(mid,dim,2) * mask_scale(dim) > dz_stretch_level ) &
	568	THEN
[557]	569	WRITE ( message_string, '(A,I3,A,I1,A,F9.3,A,F8.2,3A)' ) &
	570	'mask_loop(',mid,',',dim,',2)=', mask_loop(mid,dim,2),&
[303]	571	' exceeds dz_stretch_level=',dz_stretch_level, &
	572	'.&Vertical mask locations will not ', &
	573	'match the desired heights&within the stretching ', &
	574	'region. Recommendation: use mask instead of mask_loop.'
[564]	575	CALL message( 'init_masks', 'PA0334', 0, 1, 0, 6, 0 )
[303]	576	ENDIF
	577
[298]	578	ENDIF
	579	!
	580	!-- If necessary, reset mask_loop(mid,dim,1) and mask_loop(mid,dim,2).
	581	IF ( tmp1 < 0.0 ) mask_loop(mid,dim,1) = tmp1
	582	IF ( tmp2 < 0.0 ) mask_loop(mid,dim,2) = tmp2
	583	!
	584	!-- The default stride +/-1 (every grid point) applies if
	585	!-- mask_loop(mid,dim,3) is not specified (its default is zero).
	586	IF ( loop_stride == 0 ) THEN
	587	IF ( loop_end >= loop_begin ) THEN
	588	loop_stride = 1
	589	ELSE
	590	loop_stride = -1
	591	ENDIF
	592	ENDIF
	593	DO m = loop_begin, loop_end, loop_stride
	594	count = count + 1
	595	IF ( m >= lb .AND. m <= ub ) THEN
	596	IF ( count_l == 0 ) mask_start_l(mid,dim) = count
	597	count_l = count_l + 1
	598	IF ( dim == 1 ) THEN
	599	mask_i(mid,count_l) = m
	600	ELSEIF ( dim == 2 ) THEN
	601	mask_j(mid,count_l) = m
	602	ELSEIF ( dim == 3 ) THEN
	603	mask_k(mid,count_l) = m
	604	ENDIF
	605	ENDIF
	606	ENDDO
	607	mask_size(mid,dim) = count
	608	mask_size_l(mid,dim) = count_l
	609	ENDIF
	610
	611	END SUBROUTINE set_mask_locations
	612
	613	END SUBROUTINE init_masks

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