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source: palm/trunk/SOURCE/init_masks.f90 @ 791

Last change on this file since 791 was 773, checked in by heinze, 13 years ago
Typo in number for error messages
Property svn:keywords set to `Id`
File size: 24.4 KB

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

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