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bdydta.F90 in trunk/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

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source: trunk/NEMOGCM/NEMO/OPA_SRC/BDY/bdydta.F90 @ 3509

Last change on this file since 3509 was 3294, checked in by rblod, 12 years ago
Merge of 3.4beta into the trunk
Property svn:keywords set to `Id`
File size: 30.3 KB

Rev	Line
[911]	1	MODULE bdydta
[1125]	2	!!======================================================================
	3	!! * MODULE bdydta *
[911]	4	!! Open boundary data : read the data for the unstructured open boundaries.
[1125]	5	!!======================================================================
	6	!! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code
	7	!! - ! 2007-01 (D. Storkey) Update to use IOM module
[2528]	8	!! - ! 2007-07 (D. Storkey) add bdy_dta_fla
[1125]	9	!! 3.0 ! 2008-04 (NEMO team) add in the reference version
[2528]	10	!! 3.3 ! 2010-09 (E.O'Dea) modifications for Shelf configurations
	11	!! 3.3 ! 2010-09 (D.Storkey) add ice boundary conditions
[3294]	12	!! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge
[1125]	13	!!----------------------------------------------------------------------
	14	#if defined key_bdy
	15	!!----------------------------------------------------------------------
[3294]	16	!! 'key_bdy' Open Boundary Conditions
[1125]	17	!!----------------------------------------------------------------------
[3294]	18	!! bdy_dta : read external data along open boundaries from file
	19	!! bdy_dta_init : initialise arrays etc for reading of external data
[1125]	20	!!----------------------------------------------------------------------
[3294]	21	USE wrk_nemo ! Memory Allocation
	22	USE timing ! Timing
[911]	23	USE oce ! ocean dynamics and tracers
	24	USE dom_oce ! ocean space and time domain
	25	USE phycst ! physical constants
[3294]	26	USE bdy_oce ! ocean open boundary conditions
[911]	27	USE bdytides ! tidal forcing at boundaries
[3294]	28	USE fldread ! read input fields
	29	USE iom ! IOM library
[911]	30	USE in_out_manager ! I/O logical units
[2528]	31	#if defined key_lim2
	32	USE ice_2
	33	#endif
[911]	34
	35	IMPLICIT NONE
	36	PRIVATE
	37
[3294]	38	PUBLIC bdy_dta ! routine called by step.F90 and dynspg_ts.F90
	39	PUBLIC bdy_dta_init ! routine called by nemogcm.F90
[911]	40
[3294]	41	INTEGER, ALLOCATABLE, DIMENSION(:) :: nb_bdy_fld ! Number of fields to update for each boundary set.
	42	INTEGER :: nb_bdy_fld_sum ! Total number of fields to update for all boundary sets.
[911]	43
[3294]	44	LOGICAL, DIMENSION(jp_bdy) :: ln_full_vel_array ! =T => full velocities in 3D boundary conditions
	45	! =F => baroclinic velocities in 3D boundary conditions
[911]	46
[3294]	47	TYPE(FLD), PUBLIC, ALLOCATABLE, DIMENSION(:), TARGET :: bf ! structure of input fields (file informations, fields read)
[911]	48
[3294]	49	TYPE(MAP_POINTER), ALLOCATABLE, DIMENSION(:) :: nbmap_ptr ! array of pointers to nbmap
[911]	50
[3294]	51	# include "domzgr_substitute.h90"
[1125]	52	!!----------------------------------------------------------------------
[2528]	53	!! NEMO/OPA 3.3 , NEMO Consortium (2010)
[1146]	54	!! $Id$
[2528]	55	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[1125]	56	!!----------------------------------------------------------------------
[911]	57	CONTAINS
	58
[3294]	59	SUBROUTINE bdy_dta( kt, jit, time_offset )
[1125]	60	!!----------------------------------------------------------------------
[3294]	61	!! * SUBROUTINE bdy_dta *
[911]	62	!!
[3294]	63	!! ** Purpose : Update external data for open boundary conditions
[911]	64	!!
[3294]	65	!! ** Method : Use fldread.F90
	66	!!
[1125]	67	!!----------------------------------------------------------------------
[911]	68	!!
[3294]	69	INTEGER, INTENT( in ) :: kt ! ocean time-step index
	70	INTEGER, INTENT( in ), OPTIONAL :: jit ! subcycle time-step index (for timesplitting option)
	71	INTEGER, INTENT( in ), OPTIONAL :: time_offset ! time offset in units of timesteps. NB. if jit
	72	! is present then units = subcycle timesteps.
	73	! time_offset = 0 => get data at "now" time level
	74	! time_offset = -1 => get data at "before" time level
	75	! time_offset = +1 => get data at "after" time level
	76	! etc.
	77	!!
	78	INTEGER :: ib_bdy, jfld, jstart, jend, ib, ii, ij, ik, igrd ! local indices
	79	INTEGER, DIMENSION(jpbgrd) :: ilen1
	80	INTEGER, POINTER, DIMENSION(:) :: nblen, nblenrim ! short cuts
	81	!!
[911]	82	!!---------------------------------------------------------------------------
[3294]	83	!!
	84	IF( nn_timing == 1 ) CALL timing_start('bdy_dta')
[911]	85
[3294]	86	! Initialise data arrays once for all from initial conditions where required
	87	!---------------------------------------------------------------------------
	88	IF( kt .eq. nit000 .and. .not. PRESENT(jit) ) THEN
[1125]	89
[3294]	90	! Calculate depth-mean currents
	91	!-----------------------------
	92	CALL wrk_alloc(jpi,jpj,pu2d,pv2d)
[2528]	93
[3294]	94	pu2d(:,:) = 0.e0
	95	pv2d(:,:) = 0.e0
[911]	96
[3294]	97	DO ik = 1, jpkm1 !! Vertically integrated momentum trends
	98	pu2d(:,:) = pu2d(:,:) + fse3u(:,:,ik) * umask(:,:,ik) * un(:,:,ik)
	99	pv2d(:,:) = pv2d(:,:) + fse3v(:,:,ik) * vmask(:,:,ik) * vn(:,:,ik)
	100	END DO
	101	pu2d(:,:) = pu2d(:,:) * hur(:,:)
	102	pv2d(:,:) = pv2d(:,:) * hvr(:,:)
	103
	104	DO ib_bdy = 1, nb_bdy
[911]	105
[3294]	106	nblen => idx_bdy(ib_bdy)%nblen
	107	nblenrim => idx_bdy(ib_bdy)%nblenrim
[2528]	108
[3294]	109	IF( nn_dyn2d(ib_bdy) .gt. 0 .and. nn_dyn2d_dta(ib_bdy) .eq. 0 ) THEN
	110	IF( nn_dyn2d(ib_bdy) .eq. jp_frs ) THEN
	111	ilen1(:) = nblen(:)
	112	ELSE
	113	ilen1(:) = nblenrim(:)
	114	ENDIF
	115	igrd = 1
	116	DO ib = 1, ilen1(igrd)
	117	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	118	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
	119	dta_bdy(ib_bdy)%ssh(ib) = sshn(ii,ij) * tmask(ii,ij,1)
	120	END DO
	121	igrd = 2
	122	DO ib = 1, ilen1(igrd)
	123	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	124	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
	125	dta_bdy(ib_bdy)%u2d(ib) = pu2d(ii,ij) * umask(ii,ij,1)
	126	END DO
	127	igrd = 3
	128	DO ib = 1, ilen1(igrd)
	129	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	130	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
	131	dta_bdy(ib_bdy)%v2d(ib) = pv2d(ii,ij) * vmask(ii,ij,1)
	132	END DO
	133	ENDIF
[911]	134
[3294]	135	IF( nn_dyn3d(ib_bdy) .gt. 0 .and. nn_dyn3d_dta(ib_bdy) .eq. 0 ) THEN
	136	IF( nn_dyn3d(ib_bdy) .eq. jp_frs ) THEN
	137	ilen1(:) = nblen(:)
	138	ELSE
	139	ilen1(:) = nblenrim(:)
	140	ENDIF
	141	igrd = 2
	142	DO ib = 1, ilen1(igrd)
	143	DO ik = 1, jpkm1
	144	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	145	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
	146	dta_bdy(ib_bdy)%u3d(ib,ik) = ( un(ii,ij,ik) - pu2d(ii,ij) ) * umask(ii,ij,ik)
	147	END DO
	148	END DO
	149	igrd = 3
	150	DO ib = 1, ilen1(igrd)
	151	DO ik = 1, jpkm1
	152	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	153	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
	154	dta_bdy(ib_bdy)%v3d(ib,ik) = ( vn(ii,ij,ik) - pv2d(ii,ij) ) * vmask(ii,ij,ik)
	155	END DO
	156	END DO
	157	ENDIF
[911]	158
[3294]	159	IF( nn_tra(ib_bdy) .gt. 0 .and. nn_tra_dta(ib_bdy) .eq. 0 ) THEN
	160	IF( nn_tra(ib_bdy) .eq. jp_frs ) THEN
	161	ilen1(:) = nblen(:)
	162	ELSE
	163	ilen1(:) = nblenrim(:)
	164	ENDIF
	165	igrd = 1 ! Everything is at T-points here
	166	DO ib = 1, ilen1(igrd)
	167	DO ik = 1, jpkm1
	168	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	169	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
	170	dta_bdy(ib_bdy)%tem(ib,ik) = tsn(ii,ij,ik,jp_tem) * tmask(ii,ij,ik)
	171	dta_bdy(ib_bdy)%sal(ib,ik) = tsn(ii,ij,ik,jp_sal) * tmask(ii,ij,ik)
	172	END DO
	173	END DO
	174	ENDIF
[911]	175
[3294]	176	#if defined key_lim2
	177	IF( nn_ice_lim2(ib_bdy) .gt. 0 .and. nn_ice_lim2_dta(ib_bdy) .eq. 0 ) THEN
	178	IF( nn_ice_lim2(ib_bdy) .eq. jp_frs ) THEN
	179	ilen1(:) = nblen(:)
	180	ELSE
	181	ilen1(:) = nblenrim(:)
	182	ENDIF
	183	igrd = 1 ! Everything is at T-points here
	184	DO ib = 1, ilen1(igrd)
	185	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	186	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
	187	dta_bdy(ib_bdy)%frld(ib) = frld(ii,ij) * tmask(ii,ij,1)
	188	dta_bdy(ib_bdy)%hicif(ib) = hicif(ii,ij) * tmask(ii,ij,1)
	189	dta_bdy(ib_bdy)%hsnif(ib) = hsnif(ii,ij) * tmask(ii,ij,1)
	190	END DO
[1125]	191	ENDIF
[3294]	192	#endif
[911]	193
[3294]	194	ENDDO ! ib_bdy
[911]	195
[3294]	196	CALL wrk_dealloc(jpi,jpj,pu2d,pv2d)
[911]	197
[3294]	198	ENDIF ! kt .eq. nit000
[911]	199
[3294]	200	! update external data from files
	201	!--------------------------------
	202
	203	jstart = 1
	204	DO ib_bdy = 1, nb_bdy
	205	IF( nn_dta(ib_bdy) .eq. 1 ) THEN ! skip this bit if no external data required
	206
	207	IF( PRESENT(jit) ) THEN
	208	! Update barotropic boundary conditions only
	209	! jit is optional argument for fld_read and tide_update
	210	IF( nn_dyn2d(ib_bdy) .gt. 0 ) THEN
	211	IF( nn_dyn2d_dta(ib_bdy) .eq. 2 ) THEN ! tidal harmonic forcing ONLY: initialise arrays
	212	dta_bdy(ib_bdy)%ssh(:) = 0.0
	213	dta_bdy(ib_bdy)%u2d(:) = 0.0
	214	dta_bdy(ib_bdy)%v2d(:) = 0.0
	215	ENDIF
	216	IF( nn_dyn2d_dta(ib_bdy) .eq. 1 .or. nn_dyn2d_dta(ib_bdy) .eq. 3 ) THEN ! update external data
	217	jend = jstart + 2
	218	CALL fld_read( kt=kt, kn_fsbc=1, sd=bf(jstart:jend), map=nbmap_ptr(jstart:jend), &
	219	& jit=jit, time_offset=time_offset )
	220	ENDIF
	221	IF( nn_dyn2d_dta(ib_bdy) .ge. 2 ) THEN ! update tidal harmonic forcing
	222	CALL tide_update( kt=kt, idx=idx_bdy(ib_bdy), dta=dta_bdy(ib_bdy), td=tides(ib_bdy), &
	223	& jit=jit, time_offset=time_offset )
	224	ENDIF
[1125]	225	ENDIF
[3294]	226	ELSE
	227	IF( nn_dyn2d(ib_bdy) .gt. 0 .and. nn_dyn2d_dta(ib_bdy) .eq. 2 ) THEN ! tidal harmonic forcing ONLY: initialise arrays
	228	dta_bdy(ib_bdy)%ssh(:) = 0.0
	229	dta_bdy(ib_bdy)%u2d(:) = 0.0
	230	dta_bdy(ib_bdy)%v2d(:) = 0.0
[1125]	231	ENDIF
[3294]	232	IF( nb_bdy_fld(ib_bdy) .gt. 0 ) THEN ! update external data
	233	jend = jstart + nb_bdy_fld(ib_bdy) - 1
	234	CALL fld_read( kt=kt, kn_fsbc=1, sd=bf(jstart:jend), map=nbmap_ptr(jstart:jend), time_offset=time_offset )
[1125]	235	ENDIF
[3294]	236	IF( nn_dyn2d(ib_bdy) .gt. 0 .and. nn_dyn2d_dta(ib_bdy) .ge. 2 ) THEN ! update tidal harmonic forcing
	237	CALL tide_update( kt=kt, idx=idx_bdy(ib_bdy), dta=dta_bdy(ib_bdy), td=tides(ib_bdy), time_offset=time_offset )
[1125]	238	ENDIF
	239	ENDIF
[3294]	240	jstart = jend+1
[911]	241
[3294]	242	! If full velocities in boundary data then split into barotropic and baroclinic data
	243	! (Note that we have already made sure that you can't use ln_full_vel = .true. at the same
	244	! time as the dynspg_ts option).
[911]	245
[3294]	246	IF( ln_full_vel_array(ib_bdy) .and. &
	247	& ( nn_dyn2d_dta(ib_bdy) .eq. 1 .or. nn_dyn2d_dta(ib_bdy) .eq. 3 .or. nn_dyn3d_dta(ib_bdy) .eq. 1 ) ) THEN
[911]	248
[3294]	249	igrd = 2 ! zonal velocity
	250	dta_bdy(ib_bdy)%u2d(:) = 0.0
	251	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
	252	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	253	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
[2528]	254	DO ik = 1, jpkm1
[3294]	255	dta_bdy(ib_bdy)%u2d(ib) = dta_bdy(ib_bdy)%u2d(ib) &
	256	& + fse3u(ii,ij,ik) * umask(ii,ij,ik) * dta_bdy(ib_bdy)%u3d(ib,ik)
[2528]	257	END DO
[3294]	258	dta_bdy(ib_bdy)%u2d(ib) = dta_bdy(ib_bdy)%u2d(ib) * hur(ii,ij)
[2528]	259	DO ik = 1, jpkm1
[3294]	260	dta_bdy(ib_bdy)%u3d(ib,ik) = dta_bdy(ib_bdy)%u3d(ib,ik) - dta_bdy(ib_bdy)%u2d(ib)
[2528]	261	END DO
	262	END DO
[911]	263
[3294]	264	igrd = 3 ! meridional velocity
	265	dta_bdy(ib_bdy)%v2d(:) = 0.0
	266	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
	267	ii = idx_bdy(ib_bdy)%nbi(ib,igrd)
	268	ij = idx_bdy(ib_bdy)%nbj(ib,igrd)
[1125]	269	DO ik = 1, jpkm1
[3294]	270	dta_bdy(ib_bdy)%v2d(ib) = dta_bdy(ib_bdy)%v2d(ib) &
	271	& + fse3v(ii,ij,ik) * vmask(ii,ij,ik) * dta_bdy(ib_bdy)%v3d(ib,ik)
[1125]	272	END DO
[3294]	273	dta_bdy(ib_bdy)%v2d(ib) = dta_bdy(ib_bdy)%v2d(ib) * hvr(ii,ij)
[1125]	274	DO ik = 1, jpkm1
[3294]	275	dta_bdy(ib_bdy)%v3d(ib,ik) = dta_bdy(ib_bdy)%v3d(ib,ik) - dta_bdy(ib_bdy)%v2d(ib)
[1125]	276	END DO
	277	END DO
[3294]	278
[1125]	279	ENDIF
[911]	280
[3294]	281	END IF ! nn_dta(ib_bdy) = 1
	282	END DO ! ib_bdy
[911]	283
[3294]	284	IF( nn_timing == 1 ) CALL timing_stop('bdy_dta')
[911]	285
[3294]	286	END SUBROUTINE bdy_dta
[911]	287
	288
[3294]	289	SUBROUTINE bdy_dta_init
	290	!!----------------------------------------------------------------------
	291	!! * SUBROUTINE bdy_dta_init *
	292	!!
	293	!! ** Purpose : Initialise arrays for reading of external data
	294	!! for open boundary conditions
	295	!!
	296	!! ** Method : Use fldread.F90
	297	!!
	298	!!----------------------------------------------------------------------
	299	USE dynspg_oce, ONLY: lk_dynspg_ts
	300	!!
	301	INTEGER :: ib_bdy, jfld, jstart, jend, ierror ! local indices
	302	!!
	303	CHARACTER(len=100) :: cn_dir ! Root directory for location of data files
	304	CHARACTER(len=100), DIMENSION(nb_bdy) :: cn_dir_array ! Root directory for location of data files
	305	LOGICAL :: ln_full_vel ! =T => full velocities in 3D boundary data
	306	! =F => baroclinic velocities in 3D boundary data
	307	INTEGER :: ilen_global ! Max length required for global bdy dta arrays
	308	INTEGER, DIMENSION(jpbgrd) :: ilen0 ! size of local arrays
	309	INTEGER, ALLOCATABLE, DIMENSION(:) :: ilen1, ilen3 ! size of 1st and 3rd dimensions of local arrays
	310	INTEGER, ALLOCATABLE, DIMENSION(:) :: ibdy ! bdy set for a particular jfld
	311	INTEGER, ALLOCATABLE, DIMENSION(:) :: igrid ! index for grid type (1,2,3 = T,U,V)
	312	INTEGER, POINTER, DIMENSION(:) :: nblen, nblenrim ! short cuts
	313	TYPE(FLD_N), ALLOCATABLE, DIMENSION(:) :: blf_i ! array of namelist information structures
	314	TYPE(FLD_N) :: bn_tem, bn_sal, bn_u3d, bn_v3d !
	315	TYPE(FLD_N) :: bn_ssh, bn_u2d, bn_v2d ! informations about the fields to be read
[2528]	316	#if defined key_lim2
[3294]	317	TYPE(FLD_N) :: bn_frld, bn_hicif, bn_hsnif !
[2528]	318	#endif
[3294]	319	NAMELIST/nambdy_dta/ cn_dir, bn_tem, bn_sal, bn_u3d, bn_v3d, bn_ssh, bn_u2d, bn_v2d
[2528]	320	#if defined key_lim2
[3294]	321	NAMELIST/nambdy_dta/ bn_frld, bn_hicif, bn_hsnif
	322	#endif
	323	NAMELIST/nambdy_dta/ ln_full_vel
	324	!!---------------------------------------------------------------------------
[911]	325
[3294]	326	IF( nn_timing == 1 ) CALL timing_start('bdy_dta_init')
[911]	327
[3294]	328	! Set nn_dta
	329	DO ib_bdy = 1, nb_bdy
	330	nn_dta(ib_bdy) = MAX( nn_dyn2d_dta(ib_bdy) &
	331	,nn_dyn3d_dta(ib_bdy) &
	332	,nn_tra_dta(ib_bdy) &
[2528]	333	#if defined key_lim2
[3294]	334	,nn_ice_lim2_dta(ib_bdy) &
[2528]	335	#endif
[3294]	336	)
	337	IF(nn_dta(ib_bdy) .gt. 1) nn_dta(ib_bdy) = 1
	338	END DO
[911]	339
[3294]	340	! Work out upper bound of how many fields there are to read in and allocate arrays
	341	! ---------------------------------------------------------------------------
	342	ALLOCATE( nb_bdy_fld(nb_bdy) )
	343	nb_bdy_fld(:) = 0
	344	DO ib_bdy = 1, nb_bdy
	345	IF( nn_dyn2d(ib_bdy) .gt. 0 .and. ( nn_dyn2d_dta(ib_bdy) .eq. 1 .or. nn_dyn2d_dta(ib_bdy) .eq. 3 ) ) THEN
	346	nb_bdy_fld(ib_bdy) = nb_bdy_fld(ib_bdy) + 3
	347	ENDIF
	348	IF( nn_dyn3d(ib_bdy) .gt. 0 .and. nn_dyn3d_dta(ib_bdy) .eq. 1 ) THEN
	349	nb_bdy_fld(ib_bdy) = nb_bdy_fld(ib_bdy) + 2
	350	ENDIF
	351	IF( nn_tra(ib_bdy) .gt. 0 .and. nn_tra_dta(ib_bdy) .eq. 1 ) THEN
	352	nb_bdy_fld(ib_bdy) = nb_bdy_fld(ib_bdy) + 2
	353	ENDIF
[2528]	354	#if defined key_lim2
[3294]	355	IF( nn_ice_lim2(ib_bdy) .gt. 0 .and. nn_ice_lim2_dta(ib_bdy) .eq. 1 ) THEN
	356	nb_bdy_fld(ib_bdy) = nb_bdy_fld(ib_bdy) + 3
	357	ENDIF
	358	#endif
	359	ENDDO
[2528]	360
[3294]	361	nb_bdy_fld_sum = SUM( nb_bdy_fld )
[911]	362
[3294]	363	ALLOCATE( bf(nb_bdy_fld_sum), STAT=ierror )
	364	IF( ierror > 0 ) THEN
	365	CALL ctl_stop( 'bdy_dta: unable to allocate bf structure' ) ; RETURN
[911]	366	ENDIF
[3294]	367	ALLOCATE( blf_i(nb_bdy_fld_sum), STAT=ierror )
	368	IF( ierror > 0 ) THEN
	369	CALL ctl_stop( 'bdy_dta: unable to allocate blf_i structure' ) ; RETURN
[1125]	370	ENDIF
[3294]	371	ALLOCATE( nbmap_ptr(nb_bdy_fld_sum), STAT=ierror )
	372	IF( ierror > 0 ) THEN
	373	CALL ctl_stop( 'bdy_dta: unable to allocate nbmap_ptr structure' ) ; RETURN
	374	ENDIF
	375	ALLOCATE( ilen1(nb_bdy_fld_sum), ilen3(nb_bdy_fld_sum) )
	376	ALLOCATE( ibdy(nb_bdy_fld_sum) )
	377	ALLOCATE( igrid(nb_bdy_fld_sum) )
[911]	378
[3294]	379	! Read namelists
	380	! --------------
	381	REWIND(numnam)
	382	jfld = 0
	383	DO ib_bdy = 1, nb_bdy
	384	IF( nn_dta(ib_bdy) .eq. 1 ) THEN
	385	! set file information
	386	cn_dir = './' ! directory in which the model is executed
	387	ln_full_vel = .false.
	388	! ... default values (NB: frequency positive => hours, negative => months)
	389	! ! file ! frequency ! variable ! time intep ! clim ! 'yearly' or ! weights ! rotation !
	390	! ! name ! hours ! name ! (T/F) ! (T/F) ! 'monthly' ! filename ! pairs !
	391	bn_ssh = FLD_N( 'bdy_ssh' , 24 , 'sossheig' , .false. , .false. , 'yearly' , '' , '' )
	392	bn_u2d = FLD_N( 'bdy_vel2d_u' , 24 , 'vobtcrtx' , .false. , .false. , 'yearly' , '' , '' )
	393	bn_v2d = FLD_N( 'bdy_vel2d_v' , 24 , 'vobtcrty' , .false. , .false. , 'yearly' , '' , '' )
	394	bn_u3d = FLD_N( 'bdy_vel3d_u' , 24 , 'vozocrtx' , .false. , .false. , 'yearly' , '' , '' )
	395	bn_v3d = FLD_N( 'bdy_vel3d_v' , 24 , 'vomecrty' , .false. , .false. , 'yearly' , '' , '' )
	396	bn_tem = FLD_N( 'bdy_tem' , 24 , 'votemper' , .false. , .false. , 'yearly' , '' , '' )
	397	bn_sal = FLD_N( 'bdy_sal' , 24 , 'vosaline' , .false. , .false. , 'yearly' , '' , '' )
	398	#if defined key_lim2
	399	bn_frld = FLD_N( 'bdy_frld' , 24 , 'ildsconc' , .false. , .false. , 'yearly' , '' , '' )
	400	bn_hicif = FLD_N( 'bdy_hicif' , 24 , 'iicethic' , .false. , .false. , 'yearly' , '' , '' )
	401	bn_hsnif = FLD_N( 'bdy_hsnif' , 24 , 'isnothic' , .false. , .false. , 'yearly' , '' , '' )
	402	#endif
[911]	403
[3294]	404	! Important NOT to rewind here.
	405	READ( numnam, nambdy_dta )
[911]	406
[3294]	407	cn_dir_array(ib_bdy) = cn_dir
	408	ln_full_vel_array(ib_bdy) = ln_full_vel
[911]	409
[3294]	410	IF( ln_full_vel_array(ib_bdy) .and. lk_dynspg_ts ) THEN
	411	CALL ctl_stop( 'bdy_dta_init: ERROR, cannot specify full velocities in boundary data',&
	412	& 'with dynspg_ts option' ) ; RETURN
	413	ENDIF
[911]	414
[3294]	415	nblen => idx_bdy(ib_bdy)%nblen
	416	nblenrim => idx_bdy(ib_bdy)%nblenrim
[911]	417
[3294]	418	! Only read in necessary fields for this set.
	419	! Important that barotropic variables come first.
	420	IF( nn_dyn2d(ib_bdy) .gt. 0 .and. ( nn_dyn2d_dta(ib_bdy) .eq. 1 .or. nn_dyn2d_dta(ib_bdy) .eq. 3 ) ) THEN
[911]	421
[3294]	422	IF( nn_dyn2d(ib_bdy) .ne. jp_frs ) THEN
	423	jfld = jfld + 1
	424	blf_i(jfld) = bn_ssh
	425	ibdy(jfld) = ib_bdy
	426	igrid(jfld) = 1
	427	ilen1(jfld) = nblenrim(igrid(jfld))
	428	ilen3(jfld) = 1
	429	ENDIF
[911]	430
[3294]	431	IF( .not. ln_full_vel_array(ib_bdy) ) THEN
[911]	432
[3294]	433	jfld = jfld + 1
	434	blf_i(jfld) = bn_u2d
	435	ibdy(jfld) = ib_bdy
	436	igrid(jfld) = 2
	437	IF( nn_dyn2d(ib_bdy) .eq. jp_frs ) THEN
	438	ilen1(jfld) = nblen(igrid(jfld))
	439	ELSE
	440	ilen1(jfld) = nblenrim(igrid(jfld))
	441	ENDIF
	442	ilen3(jfld) = 1
[911]	443
[3294]	444	jfld = jfld + 1
	445	blf_i(jfld) = bn_v2d
	446	ibdy(jfld) = ib_bdy
	447	igrid(jfld) = 3
	448	IF( nn_dyn2d(ib_bdy) .eq. jp_frs ) THEN
	449	ilen1(jfld) = nblen(igrid(jfld))
	450	ELSE
	451	ilen1(jfld) = nblenrim(igrid(jfld))
	452	ENDIF
	453	ilen3(jfld) = 1
[911]	454
[3294]	455	ENDIF
[911]	456
[3294]	457	ENDIF
[1125]	458
[3294]	459	! baroclinic velocities
	460	IF( ( nn_dyn3d(ib_bdy) .gt. 0 .and. nn_dyn3d_dta(ib_bdy) .eq. 1 ) .or. &
	461	& ( ln_full_vel_array(ib_bdy) .and. nn_dyn2d(ib_bdy) .gt. 0 .and. &
	462	& ( nn_dyn2d_dta(ib_bdy) .eq. 1 .or. nn_dyn2d_dta(ib_bdy) .eq. 3 ) ) ) THEN
[911]	463
[3294]	464	jfld = jfld + 1
	465	blf_i(jfld) = bn_u3d
	466	ibdy(jfld) = ib_bdy
	467	igrid(jfld) = 2
	468	IF( nn_dyn3d(ib_bdy) .eq. jp_frs ) THEN
	469	ilen1(jfld) = nblen(igrid(jfld))
	470	ELSE
	471	ilen1(jfld) = nblenrim(igrid(jfld))
	472	ENDIF
	473	ilen3(jfld) = jpk
[911]	474
[3294]	475	jfld = jfld + 1
	476	blf_i(jfld) = bn_v3d
	477	ibdy(jfld) = ib_bdy
	478	igrid(jfld) = 3
	479	IF( nn_dyn3d(ib_bdy) .eq. jp_frs ) THEN
	480	ilen1(jfld) = nblen(igrid(jfld))
	481	ELSE
	482	ilen1(jfld) = nblenrim(igrid(jfld))
	483	ENDIF
	484	ilen3(jfld) = jpk
[911]	485
[3294]	486	ENDIF
[911]	487
[3294]	488	! temperature and salinity
	489	IF( nn_tra(ib_bdy) .gt. 0 .and. nn_tra_dta(ib_bdy) .eq. 1 ) THEN
[911]	490
[3294]	491	jfld = jfld + 1
	492	blf_i(jfld) = bn_tem
	493	ibdy(jfld) = ib_bdy
	494	igrid(jfld) = 1
	495	IF( nn_tra(ib_bdy) .eq. jp_frs ) THEN
	496	ilen1(jfld) = nblen(igrid(jfld))
	497	ELSE
	498	ilen1(jfld) = nblenrim(igrid(jfld))
	499	ENDIF
	500	ilen3(jfld) = jpk
[911]	501
[3294]	502	jfld = jfld + 1
	503	blf_i(jfld) = bn_sal
	504	ibdy(jfld) = ib_bdy
	505	igrid(jfld) = 1
	506	IF( nn_tra(ib_bdy) .eq. jp_frs ) THEN
	507	ilen1(jfld) = nblen(igrid(jfld))
	508	ELSE
	509	ilen1(jfld) = nblenrim(igrid(jfld))
	510	ENDIF
	511	ilen3(jfld) = jpk
[911]	512
	513	ENDIF
	514
[3294]	515	#if defined key_lim2
	516	! sea ice
	517	IF( nn_ice_lim2(ib_bdy) .gt. 0 .and. nn_ice_lim2_dta(ib_bdy) .eq. 1 ) THEN
[911]	518
[3294]	519	jfld = jfld + 1
	520	blf_i(jfld) = bn_frld
	521	ibdy(jfld) = ib_bdy
	522	igrid(jfld) = 1
	523	IF( nn_ice_lim2(ib_bdy) .eq. jp_frs ) THEN
	524	ilen1(jfld) = nblen(igrid(jfld))
	525	ELSE
	526	ilen1(jfld) = nblenrim(igrid(jfld))
	527	ENDIF
	528	ilen3(jfld) = 1
[911]	529
[3294]	530	jfld = jfld + 1
	531	blf_i(jfld) = bn_hicif
	532	ibdy(jfld) = ib_bdy
	533	igrid(jfld) = 1
	534	IF( nn_ice_lim2(ib_bdy) .eq. jp_frs ) THEN
	535	ilen1(jfld) = nblen(igrid(jfld))
	536	ELSE
	537	ilen1(jfld) = nblenrim(igrid(jfld))
	538	ENDIF
	539	ilen3(jfld) = 1
[911]	540
[3294]	541	jfld = jfld + 1
	542	blf_i(jfld) = bn_hsnif
	543	ibdy(jfld) = ib_bdy
	544	igrid(jfld) = 1
	545	IF( nn_ice_lim2(ib_bdy) .eq. jp_frs ) THEN
	546	ilen1(jfld) = nblen(igrid(jfld))
	547	ELSE
	548	ilen1(jfld) = nblenrim(igrid(jfld))
	549	ENDIF
	550	ilen3(jfld) = 1
[911]	551
[3294]	552	ENDIF
	553	#endif
	554	! Recalculate field counts
	555	!-------------------------
	556	nb_bdy_fld_sum = 0
	557	IF( ib_bdy .eq. 1 ) THEN
	558	nb_bdy_fld(ib_bdy) = jfld
	559	nb_bdy_fld_sum = jfld
	560	ELSE
	561	nb_bdy_fld(ib_bdy) = jfld - nb_bdy_fld_sum
	562	nb_bdy_fld_sum = nb_bdy_fld_sum + nb_bdy_fld(ib_bdy)
	563	ENDIF
[911]	564
[3294]	565	ENDIF ! nn_dta .eq. 1
	566	ENDDO ! ib_bdy
[911]	567
	568
[3294]	569	DO jfld = 1, nb_bdy_fld_sum
	570	ALLOCATE( bf(jfld)%fnow(ilen1(jfld),1,ilen3(jfld)) )
	571	IF( blf_i(jfld)%ln_tint ) ALLOCATE( bf(jfld)%fdta(ilen1(jfld),1,ilen3(jfld),2) )
	572	nbmap_ptr(jfld)%ptr => idx_bdy(ibdy(jfld))%nbmap(:,igrid(jfld))
	573	ENDDO
[911]	574
[3294]	575	! fill bf with blf_i and control print
	576	!-------------------------------------
	577	jstart = 1
	578	DO ib_bdy = 1, nb_bdy
	579	jend = jstart + nb_bdy_fld(ib_bdy) - 1
	580	CALL fld_fill( bf(jstart:jend), blf_i(jstart:jend), cn_dir_array(ib_bdy), 'bdy_dta', &
	581	& 'open boundary conditions', 'nambdy_dta' )
	582	jstart = jend + 1
	583	ENDDO
[911]	584
[3294]	585	! Initialise local boundary data arrays
	586	! nn_xxx_dta=0 : allocate space - will be filled from initial conditions later
	587	! nn_xxx_dta=1 : point to "fnow" arrays
	588	!-------------------------------------
[911]	589
[3294]	590	jfld = 0
	591	DO ib_bdy=1, nb_bdy
[911]	592
[3294]	593	nblen => idx_bdy(ib_bdy)%nblen
	594	nblenrim => idx_bdy(ib_bdy)%nblenrim
[911]	595
[3294]	596	IF (nn_dyn2d(ib_bdy) .gt. 0) THEN
	597	IF( nn_dyn2d_dta(ib_bdy) .eq. 0 .or. nn_dyn2d_dta(ib_bdy) .eq. 2 .or. ln_full_vel_array(ib_bdy) ) THEN
	598	IF( nn_dyn2d(ib_bdy) .eq. jp_frs ) THEN
	599	ilen0(1:3) = nblen(1:3)
	600	ELSE
	601	ilen0(1:3) = nblenrim(1:3)
	602	ENDIF
	603	ALLOCATE( dta_bdy(ib_bdy)%ssh(ilen0(1)) )
	604	ALLOCATE( dta_bdy(ib_bdy)%u2d(ilen0(2)) )
	605	ALLOCATE( dta_bdy(ib_bdy)%v2d(ilen0(3)) )
	606	ELSE
	607	IF( nn_dyn2d(ib_bdy) .ne. jp_frs ) THEN
	608	jfld = jfld + 1
	609	dta_bdy(ib_bdy)%ssh => bf(jfld)%fnow(:,1,1)
	610	ENDIF
	611	jfld = jfld + 1
	612	dta_bdy(ib_bdy)%u2d => bf(jfld)%fnow(:,1,1)
	613	jfld = jfld + 1
	614	dta_bdy(ib_bdy)%v2d => bf(jfld)%fnow(:,1,1)
	615	ENDIF
	616	ENDIF
[911]	617
[3294]	618	IF ( nn_dyn3d(ib_bdy) .gt. 0 .and. nn_dyn3d_dta(ib_bdy) .eq. 0 ) THEN
	619	IF( nn_dyn3d(ib_bdy) .eq. jp_frs ) THEN
	620	ilen0(1:3) = nblen(1:3)
	621	ELSE
	622	ilen0(1:3) = nblenrim(1:3)
	623	ENDIF
	624	ALLOCATE( dta_bdy(ib_bdy)%u3d(ilen0(2),jpk) )
	625	ALLOCATE( dta_bdy(ib_bdy)%v3d(ilen0(3),jpk) )
	626	ENDIF
	627	IF ( ( nn_dyn3d(ib_bdy) .gt. 0 .and. nn_dyn3d_dta(ib_bdy) .eq. 1 ).or. &
	628	& ( ln_full_vel_array(ib_bdy) .and. nn_dyn2d(ib_bdy) .gt. 0 .and. &
	629	& ( nn_dyn2d_dta(ib_bdy) .eq. 1 .or. nn_dyn2d_dta(ib_bdy) .eq. 3 ) ) ) THEN
	630	jfld = jfld + 1
	631	dta_bdy(ib_bdy)%u3d => bf(jfld)%fnow(:,1,:)
	632	jfld = jfld + 1
	633	dta_bdy(ib_bdy)%v3d => bf(jfld)%fnow(:,1,:)
	634	ENDIF
[911]	635
[3294]	636	IF (nn_tra(ib_bdy) .gt. 0) THEN
	637	IF( nn_tra_dta(ib_bdy) .eq. 0 ) THEN
	638	IF( nn_tra(ib_bdy) .eq. jp_frs ) THEN
	639	ilen0(1:3) = nblen(1:3)
	640	ELSE
	641	ilen0(1:3) = nblenrim(1:3)
	642	ENDIF
	643	ALLOCATE( dta_bdy(ib_bdy)%tem(ilen0(1),jpk) )
	644	ALLOCATE( dta_bdy(ib_bdy)%sal(ilen0(1),jpk) )
	645	ELSE
	646	jfld = jfld + 1
	647	dta_bdy(ib_bdy)%tem => bf(jfld)%fnow(:,1,:)
	648	jfld = jfld + 1
	649	dta_bdy(ib_bdy)%sal => bf(jfld)%fnow(:,1,:)
	650	ENDIF
	651	ENDIF
[911]	652
[3294]	653	#if defined key_lim2
	654	IF (nn_ice_lim2(ib_bdy) .gt. 0) THEN
	655	IF( nn_ice_lim2_dta(ib_bdy) .eq. 0 ) THEN
	656	IF( nn_ice_lim2(ib_bdy) .eq. jp_frs ) THEN
	657	ilen0(1:3) = nblen(1:3)
	658	ELSE
	659	ilen0(1:3) = nblenrim(1:3)
	660	ENDIF
	661	ALLOCATE( dta_bdy(ib_bdy)%frld(ilen0(1)) )
	662	ALLOCATE( dta_bdy(ib_bdy)%hicif(ilen0(1)) )
	663	ALLOCATE( dta_bdy(ib_bdy)%hsnif(ilen0(1)) )
	664	ELSE
	665	jfld = jfld + 1
	666	dta_bdy(ib_bdy)%frld => bf(jfld)%fnow(:,1,1)
	667	jfld = jfld + 1
	668	dta_bdy(ib_bdy)%hicif => bf(jfld)%fnow(:,1,1)
	669	jfld = jfld + 1
	670	dta_bdy(ib_bdy)%hsnif => bf(jfld)%fnow(:,1,1)
	671	ENDIF
[911]	672	ENDIF
[3294]	673	#endif
[911]	674
[3294]	675	ENDDO ! ib_bdy
[911]	676
[3294]	677	IF( nn_timing == 1 ) CALL timing_stop('bdy_dta_init')
[911]	678
[3294]	679	END SUBROUTINE bdy_dta_init
[911]	680
	681	#else
[1125]	682	!!----------------------------------------------------------------------
[3294]	683	!! Dummy module NO Open Boundary Conditions
[1125]	684	!!----------------------------------------------------------------------
[911]	685	CONTAINS
[3294]	686	SUBROUTINE bdy_dta( kt, jit, time_offset ) ! Empty routine
	687	INTEGER, INTENT( in ) :: kt
	688	INTEGER, INTENT( in ), OPTIONAL :: jit
	689	INTEGER, INTENT( in ), OPTIONAL :: time_offset
	690	WRITE(,) 'bdy_dta: You should not have seen this print! error?', kt
	691	END SUBROUTINE bdy_dta
	692	SUBROUTINE bdy_dta_init() ! Empty routine
	693	WRITE(,) 'bdy_dta_init: You should not have seen this print! error?'
	694	END SUBROUTINE bdy_dta_init
[911]	695	#endif
	696
	697	!!==============================================================================
	698	END MODULE bdydta

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