New URL for NEMO forge! http://forge.nemo-ocean.eu

Since March 2022 along with NEMO 4.2 release, the code development moved to a self-hosted GitLab.
This present forge is now archived and remained online for history.

bdyini.F90 in branches/2012/dev_MERGE_2012/NEMOGCM/NEMO/OPA_SRC/BDY – NEMO

Context Navigation

source: branches/2012/dev_MERGE_2012/NEMOGCM/NEMO/OPA_SRC/BDY/bdyini.F90 @ 3680

Last change on this file since 3680 was 3680, checked in by rblod, 11 years ago
First commit of the final branch for 2012 (future nemo_3_5), see ticket #1028
Property svn:keywords set to `Id`
File size: 73.9 KB

Rev	Line
[1125]	1	MODULE bdyini
	2	!!======================================================================
[911]	3	!! * MODULE bdyini *
[1125]	4	!! Unstructured open boundaries : initialisation
	5	!!======================================================================
	6	!! History : 1.0 ! 2005-01 (J. Chanut, A. Sellar) Original code
	7	!! - ! 2007-01 (D. Storkey) Update to use IOM module
	8	!! - ! 2007-01 (D. Storkey) Tidal forcing
	9	!! 3.0 ! 2008-04 (NEMO team) add in the reference version
[2528]	10	!! 3.3 ! 2010-09 (E.O'Dea) updates 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
[3651]	13	!! 3.4 ! 2012 (J. Chanut) straight open boundary case update
[3680]	14	!! 3.5 ! 2012 (S. Mocavero, I. Epicoco) Updates for the
	15	!! optimization of BDY communications
[1125]	16	!!----------------------------------------------------------------------
	17	#if defined key_bdy
	18	!!----------------------------------------------------------------------
	19	!! 'key_bdy' Unstructured Open Boundary Conditions
	20	!!----------------------------------------------------------------------
[911]	21	!! bdy_init : Initialization of unstructured open boundaries
[1125]	22	!!----------------------------------------------------------------------
[3294]	23	USE timing ! Timing
[911]	24	USE oce ! ocean dynamics and tracers variables
	25	USE dom_oce ! ocean space and time domain
	26	USE bdy_oce ! unstructured open boundary conditions
	27	USE in_out_manager ! I/O units
	28	USE lbclnk ! ocean lateral boundary conditions (or mpp link)
	29	USE lib_mpp ! for mpp_sum
	30	USE iom ! I/O
[3651]	31	USE sbctide, ONLY: lk_tide ! Tidal forcing or not
	32	USE phycst, ONLY: rday
[911]	33
	34	IMPLICIT NONE
	35	PRIVATE
	36
[3294]	37	PUBLIC bdy_init ! routine called in nemo_init
[911]	38
[3651]	39	INTEGER, PARAMETER :: jp_nseg = 100
	40	INTEGER, PARAMETER :: nrimmax = 20 ! maximum rimwidth in structured
	41	! open boundary data files
	42	! Straight open boundary segment parameters:
	43	INTEGER :: nbdysege, nbdysegw, nbdysegn, nbdysegs
	44	INTEGER, DIMENSION(jp_nseg) :: jpieob, jpjedt, jpjeft, npckge
	45	INTEGER, DIMENSION(jp_nseg) :: jpiwob, jpjwdt, jpjwft, npckgw
	46	INTEGER, DIMENSION(jp_nseg) :: jpjnob, jpindt, jpinft, npckgn
	47	INTEGER, DIMENSION(jp_nseg) :: jpjsob, jpisdt, jpisft, npckgs
[1125]	48	!!----------------------------------------------------------------------
[2715]	49	!! NEMO/OPA 4.0 , NEMO Consortium (2011)
[1146]	50	!! $Id$
[2715]	51	!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
[2528]	52	!!----------------------------------------------------------------------
[911]	53	CONTAINS
	54
	55	SUBROUTINE bdy_init
	56	!!----------------------------------------------------------------------
	57	!! * ROUTINE bdy_init *
	58	!!
	59	!! ** Purpose : Initialization of the dynamics and tracer fields with
[2715]	60	!! unstructured open boundaries.
[911]	61	!!
[2715]	62	!! ** Method : Read initialization arrays (mask, indices) to identify
	63	!! an unstructured open boundary
[911]	64	!!
	65	!! ** Input : bdy_init.nc, input file for unstructured open boundaries
	66	!!----------------------------------------------------------------------
[3294]	67	! namelist variables
	68	!-------------------
[3651]	69	CHARACTER(LEN=80),DIMENSION(jpbgrd) :: clfile
	70	CHARACTER(LEN=1) :: ctypebdy
	71	INTEGER :: nbdyind, nbdybeg, nbdyend
[3294]	72
	73	! local variables
	74	!-------------------
	75	INTEGER :: ib_bdy, ii, ij, ik, igrd, ib, ir, iseg ! dummy loop indices
	76	INTEGER :: icount, icountr, ibr_max, ilen1, ibm1 ! local integers
	77	INTEGER :: iw, ie, is, in, inum, id_dummy ! - -
	78	INTEGER :: igrd_start, igrd_end, jpbdta ! - -
[3651]	79	INTEGER :: jpbdtau, jpbdtas ! - -
	80	INTEGER :: ib_bdy1, ib_bdy2, ib1, ib2 ! - -
[3294]	81	INTEGER, POINTER :: nbi, nbj, nbr ! short cuts
	82	REAL , POINTER :: flagu, flagv ! - -
	83	REAL(wp) :: zefl, zwfl, znfl, zsfl ! local scalars
[3651]	84	INTEGER, DIMENSION (2) :: kdimsz
[3294]	85	INTEGER, DIMENSION(jpbgrd,jp_bdy) :: nblendta ! Length of index arrays
	86	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbidta, nbjdta ! Index arrays: i and j indices of bdy dta
	87	INTEGER, ALLOCATABLE, DIMENSION(:,:,:) :: nbrdta ! Discrete distance from rim points
[3651]	88	CHARACTER(LEN=1),DIMENSION(jpbgrd) :: cgrid
[3680]	89	INTEGER :: com_east, com_west, com_south, com_north ! Flags for boundaries sending
	90	INTEGER :: com_east_b, com_west_b, com_south_b, com_north_b ! Flags for boundaries receiving
	91	INTEGER :: iw_b(4), ie_b(4), is_b(4), in_b(4) ! Arrays for neighbours coordinates
	92
[1125]	93	!!
[3294]	94	NAMELIST/nambdy/ nb_bdy, ln_coords_file, cn_coords_file, &
	95	& ln_mask_file, cn_mask_file, nn_dyn2d, nn_dyn2d_dta, &
	96	& nn_dyn3d, nn_dyn3d_dta, nn_tra, nn_tra_dta, &
[3651]	97	& ln_tra_dmp, ln_dyn3d_dmp, rn_time_dmp, &
[3294]	98	#if defined key_lim2
	99	& nn_ice_lim2, nn_ice_lim2_dta, &
	100	#endif
	101	& ln_vol, nn_volctl, nn_rimwidth
	102	!!
[3651]	103	NAMELIST/nambdy_index/ ctypebdy, nbdyind, nbdybeg, nbdyend
[3294]	104
[911]	105	!!----------------------------------------------------------------------
	106
[3294]	107	IF( nn_timing == 1 ) CALL timing_start('bdy_init')
	108
	109	IF( bdy_oce_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'bdy_init : unable to allocate oce arrays' )
	110
[911]	111	IF(lwp) WRITE(numout,*)
[3294]	112	IF(lwp) WRITE(numout,*) 'bdy_init : initialization of open boundaries'
[911]	113	IF(lwp) WRITE(numout,*) '~~~~~~~~'
[1125]	114	!
[2715]	115
[2528]	116	IF( jperio /= 0 ) CALL ctl_stop( 'Cyclic or symmetric,', &
[3294]	117	& ' and general open boundary condition are not compatible' )
[911]	118
[3294]	119	cgrid= (/'t','u','v'/)
[3651]	120
[3294]	121	! -----------------------------------------
	122	! Initialise and read namelist parameters
	123	! -----------------------------------------
	124
	125	nb_bdy = 0
	126	ln_coords_file(:) = .false.
	127	cn_coords_file(:) = ''
	128	ln_mask_file = .false.
	129	cn_mask_file(:) = ''
	130	nn_dyn2d(:) = 0
	131	nn_dyn2d_dta(:) = -1 ! uninitialised flag
	132	nn_dyn3d(:) = 0
	133	nn_dyn3d_dta(:) = -1 ! uninitialised flag
	134	nn_tra(:) = 0
	135	nn_tra_dta(:) = -1 ! uninitialised flag
[3651]	136	ln_tra_dmp(:) = .false.
	137	ln_dyn3d_dmp(:) = .false.
	138	rn_time_dmp(:) = 1.
[3294]	139	#if defined key_lim2
	140	nn_ice_lim2(:) = 0
	141	nn_ice_lim2_dta(:)= -1 ! uninitialised flag
	142	#endif
	143	ln_vol = .false.
	144	nn_volctl = -1 ! uninitialised flag
	145	nn_rimwidth(:) = -1 ! uninitialised flag
	146
	147	REWIND( numnam )
[911]	148	READ ( numnam, nambdy )
	149
[3294]	150	! -----------------------------------------
	151	! Check and write out namelist parameters
	152	! -----------------------------------------
[2528]	153	! ! control prints
[911]	154	IF(lwp) WRITE(numout,*) ' nambdy'
	155
[3294]	156	IF( nb_bdy .eq. 0 ) THEN
	157	IF(lwp) WRITE(numout,*) 'nb_bdy = 0, NO OPEN BOUNDARIES APPLIED.'
[911]	158	ELSE
[3294]	159	IF(lwp) WRITE(numout,*) 'Number of open boundary sets : ',nb_bdy
[911]	160	ENDIF
	161
[3294]	162	DO ib_bdy = 1,nb_bdy
	163	IF(lwp) WRITE(numout,*) ' '
	164	IF(lwp) WRITE(numout,*) '------ Open boundary data set ',ib_bdy,'------'
	165
	166	IF( ln_coords_file(ib_bdy) ) THEN
	167	IF(lwp) WRITE(numout,*) 'Boundary definition read from file '//TRIM(cn_coords_file(ib_bdy))
	168	ELSE
	169	IF(lwp) WRITE(numout,*) 'Boundary defined in namelist.'
	170	ENDIF
[2528]	171	IF(lwp) WRITE(numout,*)
[1125]	172
[3294]	173	IF(lwp) WRITE(numout,*) 'Boundary conditions for barotropic solution: '
	174	SELECT CASE( nn_dyn2d(ib_bdy) )
[3651]	175	CASE(jp_none) ; IF(lwp) WRITE(numout,*) ' no open boundary condition'
	176	CASE(jp_frs) ; IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
	177	CASE(jp_flather) ; IF(lwp) WRITE(numout,*) ' Flather radiation condition'
[3294]	178	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for nn_dyn2d' )
	179	END SELECT
	180	IF( nn_dyn2d(ib_bdy) .gt. 0 ) THEN
	181	SELECT CASE( nn_dyn2d_dta(ib_bdy) ) !
	182	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
	183	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
	184	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' tidal harmonic forcing taken from file'
	185	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' boundary data AND tidal harmonic forcing taken from files'
	186	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn2d_dta must be between 0 and 3' )
	187	END SELECT
[3651]	188	IF (( nn_dyn2d_dta(ib_bdy) .ge. 2 ).AND.(.NOT.lk_tide)) THEN
	189	CALL ctl_stop( 'You must activate key_tide to add tidal forcing at open boundaries' )
	190	ENDIF
[3294]	191	ENDIF
[2528]	192	IF(lwp) WRITE(numout,*)
[911]	193
[3294]	194	IF(lwp) WRITE(numout,*) 'Boundary conditions for baroclinic velocities: '
	195	SELECT CASE( nn_dyn3d(ib_bdy) )
[3651]	196	CASE(jp_none) ; IF(lwp) WRITE(numout,*) ' no open boundary condition'
	197	CASE(jp_frs) ; IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
	198	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' Specified value'
	199	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' Zero baroclinic velocities (runoff case)'
[3294]	200	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for nn_dyn3d' )
	201	END SELECT
	202	IF( nn_dyn3d(ib_bdy) .gt. 0 ) THEN
	203	SELECT CASE( nn_dyn3d_dta(ib_bdy) ) !
	204	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
	205	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
	206	CASE DEFAULT ; CALL ctl_stop( 'nn_dyn3d_dta must be 0 or 1' )
	207	END SELECT
	208	ENDIF
[3651]	209
	210	IF ( ln_dyn3d_dmp(ib_bdy) ) THEN
	211	IF ( nn_dyn3d(ib_bdy).EQ.0 ) THEN
	212	IF(lwp) WRITE(numout,*) 'No open boundary condition for baroclinic velocities: ln_dyn3d_dmp is set to .false.'
	213	ln_dyn3d_dmp(ib_bdy)=.false.
	214	ELSEIF ( nn_dyn3d(ib_bdy).EQ.1 ) THEN
	215	CALL ctl_stop( 'Use FRS OR relaxation' )
	216	ELSE
	217	IF(lwp) WRITE(numout,*) ' + baroclinic velocities relaxation zone'
	218	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
	219	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
	220	ENDIF
	221	ELSE
	222	IF(lwp) WRITE(numout,*) ' NO relaxation on baroclinic velocities'
	223	ENDIF
[2528]	224	IF(lwp) WRITE(numout,*)
[1125]	225
[3294]	226	IF(lwp) WRITE(numout,*) 'Boundary conditions for temperature and salinity: '
	227	SELECT CASE( nn_tra(ib_bdy) )
[3651]	228	CASE(jp_none) ; IF(lwp) WRITE(numout,*) ' no open boundary condition'
	229	CASE(jp_frs) ; IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
	230	CASE( 2 ) ; IF(lwp) WRITE(numout,*) ' Specified value'
	231	CASE( 3 ) ; IF(lwp) WRITE(numout,*) ' Neumann conditions'
	232	CASE( 4 ) ; IF(lwp) WRITE(numout,*) ' Runoff conditions : Neumann for T and specified to 0.1 for salinity'
[3294]	233	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for nn_tra' )
	234	END SELECT
	235	IF( nn_tra(ib_bdy) .gt. 0 ) THEN
	236	SELECT CASE( nn_tra_dta(ib_bdy) ) !
	237	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
	238	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
	239	CASE DEFAULT ; CALL ctl_stop( 'nn_tra_dta must be 0 or 1' )
	240	END SELECT
	241	ENDIF
[3651]	242
	243	IF ( ln_tra_dmp(ib_bdy) ) THEN
	244	IF ( nn_tra(ib_bdy).EQ.0 ) THEN
	245	IF(lwp) WRITE(numout,*) 'No open boundary condition for tracers: ln_tra_dmp is set to .false.'
	246	ln_tra_dmp(ib_bdy)=.false.
	247	ELSEIF ( nn_tra(ib_bdy).EQ.1 ) THEN
	248	CALL ctl_stop( 'Use FRS OR relaxation' )
	249	ELSE
	250	IF(lwp) WRITE(numout,*) ' + T/S relaxation zone'
	251	IF(lwp) WRITE(numout,*) ' Damping time scale: ',rn_time_dmp(ib_bdy),' days'
	252	IF((lwp).AND.rn_time_dmp(ib_bdy)<0) CALL ctl_stop( 'Time scale must be positive' )
	253	ENDIF
	254	ELSE
	255	IF(lwp) WRITE(numout,*) ' NO T/S relaxation'
	256	ENDIF
[2528]	257	IF(lwp) WRITE(numout,*)
[1125]	258
[3294]	259	#if defined key_lim2
	260	IF(lwp) WRITE(numout,*) 'Boundary conditions for sea ice: '
	261	SELECT CASE( nn_ice_lim2(ib_bdy) )
	262	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' no open boundary condition'
	263	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' Flow Relaxation Scheme'
	264	CASE DEFAULT ; CALL ctl_stop( 'unrecognised value for nn_tra' )
	265	END SELECT
	266	IF( nn_ice_lim2(ib_bdy) .gt. 0 ) THEN
	267	SELECT CASE( nn_ice_lim2_dta(ib_bdy) ) !
	268	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' initial state used for bdy data'
	269	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' boundary data taken from file'
	270	CASE DEFAULT ; CALL ctl_stop( 'nn_ice_lim2_dta must be 0 or 1' )
	271	END SELECT
	272	ENDIF
[2528]	273	IF(lwp) WRITE(numout,*)
[3294]	274	#endif
[911]	275
[3651]	276	IF(lwp) WRITE(numout,*) ' Width of relaxation zone = ', nn_rimwidth(ib_bdy)
[3294]	277	IF(lwp) WRITE(numout,*)
[2528]	278
[3294]	279	ENDDO
[2528]	280
[3651]	281	IF (nb_bdy .gt. 0) THEN
	282	IF( ln_vol ) THEN ! check volume conservation (nn_volctl value)
	283	IF(lwp) WRITE(numout,*) 'Volume correction applied at open boundaries'
	284	IF(lwp) WRITE(numout,*)
	285	SELECT CASE ( nn_volctl )
	286	CASE( 1 ) ; IF(lwp) WRITE(numout,*) ' The total volume will be constant'
	287	CASE( 0 ) ; IF(lwp) WRITE(numout,*) ' The total volume will vary according to the surface E-P flux'
	288	CASE DEFAULT ; CALL ctl_stop( 'nn_volctl must be 0 or 1' )
	289	END SELECT
	290	IF(lwp) WRITE(numout,*)
	291	ELSE
	292	IF(lwp) WRITE(numout,*) 'No volume correction applied at open boundaries'
	293	IF(lwp) WRITE(numout,*)
	294	ENDIF
[3294]	295	ENDIF
	296
[1125]	297	! -------------------------------------------------
[3294]	298	! Initialise indices arrays for open boundaries
	299	! -------------------------------------------------
[911]	300
[3294]	301	! Work out global dimensions of boundary data
	302	! ---------------------------------------------
	303	REWIND( numnam )
[3651]	304
	305	nblendta(:,:) = 0
	306	nbdysege = 0
	307	nbdysegw = 0
	308	nbdysegn = 0
	309	nbdysegs = 0
	310	icount = 0 ! count user defined segments
	311	! Dimensions below are used to allocate arrays to read external data
	312	jpbdtas = 1 ! Maximum size of boundary data (structured case)
	313	jpbdtau = 1 ! Maximum size of boundary data (unstructured case)
	314
[3294]	315	DO ib_bdy = 1, nb_bdy
	316
	317	IF( .NOT. ln_coords_file(ib_bdy) ) THEN ! Work out size of global arrays from namelist parameters
	318
[3651]	319	icount = icount + 1
[3294]	320	! No REWIND here because may need to read more than one nambdy_index namelist.
	321	READ ( numnam, nambdy_index )
	322
[3651]	323	SELECT CASE ( TRIM(ctypebdy) )
	324	CASE( 'N' )
	325	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
	326	nbdyind = jpjglo - 2 ! set boundary to whole side of model domain.
	327	nbdybeg = 2
	328	nbdyend = jpiglo - 1
	329	ENDIF
	330	nbdysegn = nbdysegn + 1
	331	npckgn(nbdysegn) = ib_bdy ! Save bdy package number
	332	jpjnob(nbdysegn) = nbdyind
	333	jpindt(nbdysegn) = nbdybeg
	334	jpinft(nbdysegn) = nbdyend
	335	!
	336	CASE( 'S' )
	337	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
	338	nbdyind = 2 ! set boundary to whole side of model domain.
	339	nbdybeg = 2
	340	nbdyend = jpiglo - 1
	341	ENDIF
	342	nbdysegs = nbdysegs + 1
	343	npckgs(nbdysegs) = ib_bdy ! Save bdy package number
	344	jpjsob(nbdysegs) = nbdyind
	345	jpisdt(nbdysegs) = nbdybeg
	346	jpisft(nbdysegs) = nbdyend
	347	!
	348	CASE( 'E' )
	349	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
	350	nbdyind = jpiglo - 2 ! set boundary to whole side of model domain.
	351	nbdybeg = 2
	352	nbdyend = jpjglo - 1
	353	ENDIF
	354	nbdysege = nbdysege + 1
	355	npckge(nbdysege) = ib_bdy ! Save bdy package number
	356	jpieob(nbdysege) = nbdyind
	357	jpjedt(nbdysege) = nbdybeg
	358	jpjeft(nbdysege) = nbdyend
	359	!
	360	CASE( 'W' )
	361	IF( nbdyind == -1 ) THEN ! Automatic boundary definition: if nbdysegX = -1
	362	nbdyind = 2 ! set boundary to whole side of model domain.
	363	nbdybeg = 2
	364	nbdyend = jpjglo - 1
	365	ENDIF
	366	nbdysegw = nbdysegw + 1
	367	npckgw(nbdysegw) = ib_bdy ! Save bdy package number
	368	jpiwob(nbdysegw) = nbdyind
	369	jpjwdt(nbdysegw) = nbdybeg
	370	jpjwft(nbdysegw) = nbdyend
	371	!
	372	CASE DEFAULT ; CALL ctl_stop( 'ctypebdy must be N, S, E or W' )
	373	END SELECT
[3294]	374
[3651]	375	! For simplicity we assume that in case of straight bdy, arrays have the same length
	376	! (even if it is true that last tangential velocity points
	377	! are useless). This simplifies a little bit boundary data format (and agrees with format
	378	! used so far in obc package)
[3294]	379
[3651]	380	nblendta(1:jpbgrd,ib_bdy) = (nbdyend - nbdybeg + 1) * nn_rimwidth(ib_bdy)
	381	jpbdtas = MAX(jpbdtas, (nbdyend - nbdybeg + 1))
	382	IF (lwp.and.(nn_rimwidth(ib_bdy)>nrimmax)) &
	383	& CALL ctl_stop( 'rimwidth must be lower than nrimmax' )
[3294]	384
	385	ELSE ! Read size of arrays in boundary coordinates file.
	386	CALL iom_open( cn_coords_file(ib_bdy), inum )
	387	DO igrd = 1, jpbgrd
	388	id_dummy = iom_varid( inum, 'nbi'//cgrid(igrd), kdimsz=kdimsz )
	389	nblendta(igrd,ib_bdy) = kdimsz(1)
[3651]	390	jpbdtau = MAX(jpbdtau, kdimsz(1))
[3294]	391	ENDDO
[3651]	392	CALL iom_close( inum )
[3294]	393
	394	ENDIF
	395
	396	ENDDO ! ib_bdy
	397
[3651]	398	IF (nb_bdy>0) THEN
	399	jpbdta = MAXVAL(nblendta(1:jpbgrd,1:nb_bdy))
[3294]	400
[3651]	401	! Allocate arrays
	402	!---------------
	403	ALLOCATE( nbidta(jpbdta, jpbgrd, nb_bdy), nbjdta(jpbdta, jpbgrd, nb_bdy), &
	404	& nbrdta(jpbdta, jpbgrd, nb_bdy) )
[3294]	405
[3651]	406	ALLOCATE( dta_global(jpbdtau, 1, jpk) )
	407	IF ( icount>0 ) ALLOCATE( dta_global2(jpbdtas, nrimmax, jpk) )
	408	!
	409	ENDIF
	410
	411	! Now look for crossings in user (namelist) defined open boundary segments:
	412	!--------------------------------------------------------------------------
	413	IF ( icount>0 ) CALL bdy_ctl_seg
	414
[3294]	415	! Calculate global boundary index arrays or read in from file
[3651]	416	!------------------------------------------------------------
	417	! 1. Read global index arrays from boundary coordinates file.
[3294]	418	DO ib_bdy = 1, nb_bdy
	419
[3651]	420	IF( ln_coords_file(ib_bdy) ) THEN
[3294]	421
[3651]	422	CALL iom_open( cn_coords_file(ib_bdy), inum )
[3294]	423	DO igrd = 1, jpbgrd
	424	CALL iom_get( inum, jpdom_unknown, 'nbi'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
	425	DO ii = 1,nblendta(igrd,ib_bdy)
	426	nbidta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
	427	END DO
	428	CALL iom_get( inum, jpdom_unknown, 'nbj'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
	429	DO ii = 1,nblendta(igrd,ib_bdy)
	430	nbjdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
	431	END DO
	432	CALL iom_get( inum, jpdom_unknown, 'nbr'//cgrid(igrd), dta_global(1:nblendta(igrd,ib_bdy),:,1) )
	433	DO ii = 1,nblendta(igrd,ib_bdy)
	434	nbrdta(ii,igrd,ib_bdy) = INT( dta_global(ii,1,1) )
	435	END DO
	436
	437	ibr_max = MAXVAL( nbrdta(:,igrd,ib_bdy) )
	438	IF(lwp) WRITE(numout,*)
	439	IF(lwp) WRITE(numout,*) ' Maximum rimwidth in file is ', ibr_max
	440	IF(lwp) WRITE(numout,*) ' nn_rimwidth from namelist is ', nn_rimwidth(ib_bdy)
	441	IF (ibr_max < nn_rimwidth(ib_bdy)) &
	442	CALL ctl_stop( 'nn_rimwidth is larger than maximum rimwidth in file',cn_coords_file(ib_bdy) )
	443	END DO
	444	CALL iom_close( inum )
	445
	446	ENDIF
	447
[3651]	448	ENDDO
	449
	450	! 2. Now fill indices corresponding to straight open boundary arrays:
	451	! East
	452	!-----
	453	DO iseg = 1, nbdysege
	454	ib_bdy = npckge(iseg)
	455	!
	456	! ------------ T points -------------
	457	igrd=1
	458	icount=0
	459	DO ir = 1, nn_rimwidth(ib_bdy)
	460	DO ij = jpjedt(iseg), jpjeft(iseg)
	461	icount = icount + 1
	462	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
	463	nbjdta(icount, igrd, ib_bdy) = ij
	464	nbrdta(icount, igrd, ib_bdy) = ir
	465	ENDDO
	466	ENDDO
	467	!
	468	! ------------ U points -------------
	469	igrd=2
	470	icount=0
	471	DO ir = 1, nn_rimwidth(ib_bdy)
	472	DO ij = jpjedt(iseg), jpjeft(iseg)
	473	icount = icount + 1
	474	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 1 - ir
	475	nbjdta(icount, igrd, ib_bdy) = ij
	476	nbrdta(icount, igrd, ib_bdy) = ir
	477	ENDDO
	478	ENDDO
	479	!
	480	! ------------ V points -------------
	481	igrd=3
	482	icount=0
	483	DO ir = 1, nn_rimwidth(ib_bdy)
	484	! DO ij = jpjedt(iseg), jpjeft(iseg) - 1
	485	DO ij = jpjedt(iseg), jpjeft(iseg)
	486	icount = icount + 1
	487	nbidta(icount, igrd, ib_bdy) = jpieob(iseg) + 2 - ir
	488	nbjdta(icount, igrd, ib_bdy) = ij
	489	nbrdta(icount, igrd, ib_bdy) = ir
	490	ENDDO
	491	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	492	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	493	ENDDO
	494	ENDDO
	495	!
	496	! West
	497	!-----
	498	DO iseg = 1, nbdysegw
	499	ib_bdy = npckgw(iseg)
	500	!
	501	! ------------ T points -------------
	502	igrd=1
	503	icount=0
	504	DO ir = 1, nn_rimwidth(ib_bdy)
	505	DO ij = jpjwdt(iseg), jpjwft(iseg)
	506	icount = icount + 1
	507	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
	508	nbjdta(icount, igrd, ib_bdy) = ij
	509	nbrdta(icount, igrd, ib_bdy) = ir
	510	ENDDO
	511	ENDDO
	512	!
	513	! ------------ U points -------------
	514	igrd=2
	515	icount=0
	516	DO ir = 1, nn_rimwidth(ib_bdy)
	517	DO ij = jpjwdt(iseg), jpjwft(iseg)
	518	icount = icount + 1
	519	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
	520	nbjdta(icount, igrd, ib_bdy) = ij
	521	nbrdta(icount, igrd, ib_bdy) = ir
	522	ENDDO
	523	ENDDO
	524	!
	525	! ------------ V points -------------
	526	igrd=3
	527	icount=0
	528	DO ir = 1, nn_rimwidth(ib_bdy)
	529	! DO ij = jpjwdt(iseg), jpjwft(iseg) - 1
	530	DO ij = jpjwdt(iseg), jpjwft(iseg)
	531	icount = icount + 1
	532	nbidta(icount, igrd, ib_bdy) = jpiwob(iseg) + ir - 1
	533	nbjdta(icount, igrd, ib_bdy) = ij
	534	nbrdta(icount, igrd, ib_bdy) = ir
	535	ENDDO
	536	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	537	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	538	ENDDO
	539	ENDDO
	540	!
	541	! North
	542	!-----
	543	DO iseg = 1, nbdysegn
	544	ib_bdy = npckgn(iseg)
	545	!
	546	! ------------ T points -------------
	547	igrd=1
	548	icount=0
	549	DO ir = 1, nn_rimwidth(ib_bdy)
	550	DO ii = jpindt(iseg), jpinft(iseg)
	551	icount = icount + 1
	552	nbidta(icount, igrd, ib_bdy) = ii
	553	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
	554	nbrdta(icount, igrd, ib_bdy) = ir
	555	ENDDO
	556	ENDDO
	557	!
	558	! ------------ U points -------------
	559	igrd=2
	560	icount=0
	561	DO ir = 1, nn_rimwidth(ib_bdy)
	562	! DO ii = jpindt(iseg), jpinft(iseg) - 1
	563	DO ii = jpindt(iseg), jpinft(iseg)
	564	icount = icount + 1
	565	nbidta(icount, igrd, ib_bdy) = ii
	566	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 2 - ir
	567	nbrdta(icount, igrd, ib_bdy) = ir
	568	ENDDO
	569	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	570	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	571	ENDDO
	572	!
	573	! ------------ V points -------------
	574	igrd=3
	575	icount=0
	576	DO ir = 1, nn_rimwidth(ib_bdy)
	577	DO ii = jpindt(iseg), jpinft(iseg)
	578	icount = icount + 1
	579	nbidta(icount, igrd, ib_bdy) = ii
	580	nbjdta(icount, igrd, ib_bdy) = jpjnob(iseg) + 1 - ir
	581	nbrdta(icount, igrd, ib_bdy) = ir
	582	ENDDO
	583	ENDDO
	584	ENDDO
	585	!
	586	! South
	587	!-----
	588	DO iseg = 1, nbdysegs
	589	ib_bdy = npckgs(iseg)
	590	!
	591	! ------------ T points -------------
	592	igrd=1
	593	icount=0
	594	DO ir = 1, nn_rimwidth(ib_bdy)
	595	DO ii = jpisdt(iseg), jpisft(iseg)
	596	icount = icount + 1
	597	nbidta(icount, igrd, ib_bdy) = ii
	598	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
	599	nbrdta(icount, igrd, ib_bdy) = ir
	600	ENDDO
	601	ENDDO
	602	!
	603	! ------------ U points -------------
	604	igrd=2
	605	icount=0
	606	DO ir = 1, nn_rimwidth(ib_bdy)
	607	! DO ii = jpisdt(iseg), jpisft(iseg) - 1
	608	DO ii = jpisdt(iseg), jpisft(iseg)
	609	icount = icount + 1
	610	nbidta(icount, igrd, ib_bdy) = ii
	611	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
	612	nbrdta(icount, igrd, ib_bdy) = ir
	613	ENDDO
	614	nbidta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	615	nbjdta(icount, igrd, ib_bdy) = -ib_bdy ! Discount this point
	616	ENDDO
	617	!
	618	! ------------ V points -------------
	619	igrd=3
	620	icount=0
	621	DO ir = 1, nn_rimwidth(ib_bdy)
	622	DO ii = jpisdt(iseg), jpisft(iseg)
	623	icount = icount + 1
	624	nbidta(icount, igrd, ib_bdy) = ii
	625	nbjdta(icount, igrd, ib_bdy) = jpjsob(iseg) + ir - 1
	626	nbrdta(icount, igrd, ib_bdy) = ir
	627	ENDDO
	628	ENDDO
	629	ENDDO
[3294]	630
[3651]	631	! Deal with duplicated points
	632	!-----------------------------
	633	! We assign negative indices to duplicated points (to remove them from bdy points to be updated)
	634	! if their distance to the bdy is greater than the other
	635	! If their distance are the same, just keep only one to avoid updating a point twice
	636	DO igrd = 1, jpbgrd
	637	DO ib_bdy1 = 1, nb_bdy
	638	DO ib_bdy2 = 1, nb_bdy
	639	IF (ib_bdy1/=ib_bdy2) THEN
	640	DO ib1 = 1, nblendta(igrd,ib_bdy1)
	641	DO ib2 = 1, nblendta(igrd,ib_bdy2)
	642	IF ((nbidta(ib1, igrd, ib_bdy1)==nbidta(ib2, igrd, ib_bdy2)).AND. &
	643	& (nbjdta(ib1, igrd, ib_bdy1)==nbjdta(ib2, igrd, ib_bdy2))) THEN
	644	! IF ((lwp).AND.(igrd==1)) WRITE(numout,*) ' found coincident point ji, jj:', &
	645	! & nbidta(ib1, igrd, ib_bdy1), &
	646	! & nbjdta(ib2, igrd, ib_bdy2)
	647	! keep only points with the lowest distance to boundary:
	648	IF (nbrdta(ib1, igrd, ib_bdy1)<nbrdta(ib2, igrd, ib_bdy2)) THEN
	649	nbidta(ib2, igrd, ib_bdy2) =-ib_bdy2
	650	nbjdta(ib2, igrd, ib_bdy2) =-ib_bdy2
	651	ELSEIF (nbrdta(ib1, igrd, ib_bdy1)>nbrdta(ib2, igrd, ib_bdy2)) THEN
	652	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
	653	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
	654	! Arbitrary choice if distances are the same:
	655	ELSE
	656	nbidta(ib1, igrd, ib_bdy1) =-ib_bdy1
	657	nbjdta(ib1, igrd, ib_bdy1) =-ib_bdy1
	658	ENDIF
	659	END IF
	660	END DO
	661	END DO
	662	ENDIF
	663	END DO
	664	END DO
	665	END DO
	666
[3294]	667	! Work out dimensions of boundary data on each processor
	668	! ------------------------------------------------------
	669
[3651]	670	! Rather assume that boundary data indices are given on global domain
	671	! TO BE DISCUSSED ?
	672	! iw = mig(1) + 1 ! if monotasking and no zoom, iw=2
	673	! ie = mig(1) + nlci-1 - 1 ! if monotasking and no zoom, ie=jpim1
	674	! is = mjg(1) + 1 ! if monotasking and no zoom, is=2
	675	! in = mjg(1) + nlcj-1 - 1 ! if monotasking and no zoom, in=jpjm1
	676	iw = mig(1) - jpizoom + 2 ! if monotasking and no zoom, iw=2
	677	ie = mig(1) + nlci - jpizoom - 1 ! if monotasking and no zoom, ie=jpim1
	678	is = mjg(1) - jpjzoom + 2 ! if monotasking and no zoom, is=2
	679	in = mjg(1) + nlcj - jpjzoom - 1 ! if monotasking and no zoom, in=jpjm1
	680
[3680]	681	ALLOCATE( nbondi_bdy(nb_bdy))
	682	ALLOCATE( nbondj_bdy(nb_bdy))
	683	nbondi_bdy(:)=2
	684	nbondj_bdy(:)=2
	685	ALLOCATE( nbondi_bdy_b(nb_bdy))
	686	ALLOCATE( nbondj_bdy_b(nb_bdy))
	687	nbondi_bdy_b(:)=2
	688	nbondj_bdy_b(:)=2
	689
	690	! Work out dimensions of boundary data on each neighbour process
	691	IF(nbondi .eq. 0) THEN
	692	iw_b(1) = jpizoom + nimppt(nowe+1)
	693	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
	694	is_b(1) = jpjzoom + njmppt(nowe+1)
	695	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
	696
	697	iw_b(2) = jpizoom + nimppt(noea+1)
	698	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
	699	is_b(2) = jpjzoom + njmppt(noea+1)
	700	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
	701	ELSEIF(nbondi .eq. 1) THEN
	702	iw_b(1) = jpizoom + nimppt(nowe+1)
	703	ie_b(1) = jpizoom + nimppt(nowe+1)+nlcit(nowe+1)-3
	704	is_b(1) = jpjzoom + njmppt(nowe+1)
	705	in_b(1) = jpjzoom + njmppt(nowe+1)+nlcjt(nowe+1)-3
	706	ELSEIF(nbondi .eq. -1) THEN
	707	iw_b(2) = jpizoom + nimppt(noea+1)
	708	ie_b(2) = jpizoom + nimppt(noea+1)+nlcit(noea+1)-3
	709	is_b(2) = jpjzoom + njmppt(noea+1)
	710	in_b(2) = jpjzoom + njmppt(noea+1)+nlcjt(noea+1)-3
	711	ENDIF
	712
	713	IF(nbondj .eq. 0) THEN
	714	iw_b(3) = jpizoom + nimppt(noso+1)
	715	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
	716	is_b(3) = jpjzoom + njmppt(noso+1)
	717	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
	718
	719	iw_b(4) = jpizoom + nimppt(nono+1)
	720	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
	721	is_b(4) = jpjzoom + njmppt(nono+1)
	722	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
	723	ELSEIF(nbondj .eq. 1) THEN
	724	iw_b(3) = jpizoom + nimppt(noso+1)
	725	ie_b(3) = jpizoom + nimppt(noso+1)+nlcit(noso+1)-3
	726	is_b(3) = jpjzoom + njmppt(noso+1)
	727	in_b(3) = jpjzoom + njmppt(noso+1)+nlcjt(noso+1)-3
	728	ELSEIF(nbondj .eq. -1) THEN
	729	iw_b(4) = jpizoom + nimppt(nono+1)
	730	ie_b(4) = jpizoom + nimppt(nono+1)+nlcit(nono+1)-3
	731	is_b(4) = jpjzoom + njmppt(nono+1)
	732	in_b(4) = jpjzoom + njmppt(nono+1)+nlcjt(nono+1)-3
	733	ENDIF
	734
[3294]	735	DO ib_bdy = 1, nb_bdy
	736	DO igrd = 1, jpbgrd
	737	icount = 0
	738	icountr = 0
	739	idx_bdy(ib_bdy)%nblen(igrd) = 0
	740	idx_bdy(ib_bdy)%nblenrim(igrd) = 0
	741	DO ib = 1, nblendta(igrd,ib_bdy)
	742	! check that data is in correct order in file
	743	ibm1 = MAX(1,ib-1)
	744	IF(lwp) THEN ! Since all procs read global data only need to do this check on one proc...
	745	IF( nbrdta(ib,igrd,ib_bdy) < nbrdta(ibm1,igrd,ib_bdy) ) THEN
	746	CALL ctl_stop('bdy_init : ERROR : boundary data in file must be defined in order of distance from edge nbr.', &
	747	'A utility for re-ordering boundary coordinates and data files exists in the TOOLS/OBC directory')
	748	ENDIF
	749	ENDIF
	750	! check if point is in local domain
	751	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
	752	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in ) THEN
	753	!
	754	icount = icount + 1
	755	!
	756	IF( nbrdta(ib,igrd,ib_bdy) == 1 ) icountr = icountr+1
	757	ENDIF
	758	ENDDO
	759	idx_bdy(ib_bdy)%nblenrim(igrd) = icountr !: length of rim boundary data on each proc
	760	idx_bdy(ib_bdy)%nblen (igrd) = icount !: length of boundary data on each proc
	761	ENDDO ! igrd
	762
	763	! Allocate index arrays for this boundary set
	764	!--------------------------------------------
	765	ilen1 = MAXVAL(idx_bdy(ib_bdy)%nblen(:))
	766	ALLOCATE( idx_bdy(ib_bdy)%nbi(ilen1,jpbgrd) )
	767	ALLOCATE( idx_bdy(ib_bdy)%nbj(ilen1,jpbgrd) )
	768	ALLOCATE( idx_bdy(ib_bdy)%nbr(ilen1,jpbgrd) )
[3651]	769	ALLOCATE( idx_bdy(ib_bdy)%nbd(ilen1,jpbgrd) )
[3294]	770	ALLOCATE( idx_bdy(ib_bdy)%nbmap(ilen1,jpbgrd) )
	771	ALLOCATE( idx_bdy(ib_bdy)%nbw(ilen1,jpbgrd) )
	772	ALLOCATE( idx_bdy(ib_bdy)%flagu(ilen1) )
	773	ALLOCATE( idx_bdy(ib_bdy)%flagv(ilen1) )
	774
	775	! Dispatch mapping indices and discrete distances on each processor
	776	! -----------------------------------------------------------------
	777
[3680]	778	com_east = 0
	779	com_west = 0
	780	com_south = 0
	781	com_north = 0
	782
	783	com_east_b = 0
	784	com_west_b = 0
	785	com_south_b = 0
	786	com_north_b = 0
[3294]	787	DO igrd = 1, jpbgrd
	788	icount = 0
	789	! Loop on rimwidth to ensure outermost points come first in the local arrays.
	790	DO ir=1, nn_rimwidth(ib_bdy)
	791	DO ib = 1, nblendta(igrd,ib_bdy)
	792	! check if point is in local domain and equals ir
	793	IF( nbidta(ib,igrd,ib_bdy) >= iw .AND. nbidta(ib,igrd,ib_bdy) <= ie .AND. &
	794	& nbjdta(ib,igrd,ib_bdy) >= is .AND. nbjdta(ib,igrd,ib_bdy) <= in .AND. &
	795	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	796	!
	797	icount = icount + 1
[3651]	798
	799	! Rather assume that boundary data indices are given on global domain
	800	! TO BE DISCUSSED ?
	801	! idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+1
	802	! idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+1
	803	idx_bdy(ib_bdy)%nbi(icount,igrd) = nbidta(ib,igrd,ib_bdy)- mig(1)+jpizoom
	804	idx_bdy(ib_bdy)%nbj(icount,igrd) = nbjdta(ib,igrd,ib_bdy)- mjg(1)+jpjzoom
[3680]	805	! check if point has to be sent
	806	ii = idx_bdy(ib_bdy)%nbi(icount,igrd)
	807	ij = idx_bdy(ib_bdy)%nbj(icount,igrd)
	808	if((com_east .ne. 1) .and. (ii .eq. (nlci-1)) .and. (nbondi .le. 0)) then
	809	com_east = 1
	810	elseif((com_west .ne. 1) .and. (ii .eq. 2) .and. (nbondi .ge. 0) .and. (nbondi .ne. 2)) then
	811	com_west = 1
	812	endif
	813	if((com_south .ne. 1) .and. (ij .eq. 2) .and. (nbondj .ge. 0) .and. (nbondj .ne. 2)) then
	814	com_south = 1
	815	elseif((com_north .ne. 1) .and. (ij .eq. (nlcj-1)) .and. (nbondj .le. 0)) then
	816	com_north = 1
	817	endif
[3294]	818	idx_bdy(ib_bdy)%nbr(icount,igrd) = nbrdta(ib,igrd,ib_bdy)
	819	idx_bdy(ib_bdy)%nbmap(icount,igrd) = ib
	820	ENDIF
[3680]	821	! check if point has to be received from a neighbour
	822	IF(nbondi .eq. 0) THEN
	823	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
	824	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
	825	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	826	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
	827	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
	828	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
	829	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
	830	com_south = 1
	831	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
	832	com_north = 1
	833	endif
	834	com_west_b = 1
	835	endif
	836	ENDIF
	837	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
	838	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
	839	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	840	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
	841	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
	842	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
	843	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
	844	com_south = 1
	845	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
	846	com_north = 1
	847	endif
	848	com_east_b = 1
	849	endif
	850	ENDIF
	851	ELSEIF(nbondi .eq. 1) THEN
	852	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(1) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(1) .AND. &
	853	& nbjdta(ib,igrd,ib_bdy) >= is_b(1) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(1) .AND. &
	854	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	855	ii = nbidta(ib,igrd,ib_bdy)- iw_b(1)+2
	856	if((com_west_b .ne. 1) .and. (ii .eq. (nlcit(nowe+1)-1))) then
	857	ij = nbjdta(ib,igrd,ib_bdy) - is_b(1)+2
	858	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
	859	com_south = 1
	860	elseif((ij .eq. nlcjt(nowe+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
	861	com_north = 1
	862	endif
	863	com_west_b = 1
	864	endif
	865	ENDIF
	866	ELSEIF(nbondi .eq. -1) THEN
	867	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(2) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(2) .AND. &
	868	& nbjdta(ib,igrd,ib_bdy) >= is_b(2) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(2) .AND. &
	869	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	870	ii = nbidta(ib,igrd,ib_bdy)- iw_b(2)+2
	871	if((com_east_b .ne. 1) .and. (ii .eq. 2)) then
	872	ij = nbjdta(ib,igrd,ib_bdy) - is_b(2)+2
	873	if((ij .eq. 2) .and. (nbondj .eq. 0 .or. nbondj .eq. 1)) then
	874	com_south = 1
	875	elseif((ij .eq. nlcjt(noea+1)-1) .and. (nbondj .eq. 0 .or. nbondj .eq. -1)) then
	876	com_north = 1
	877	endif
	878	com_east_b = 1
	879	endif
	880	ENDIF
	881	ENDIF
	882	IF(nbondj .eq. 0) THEN
	883	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
	884	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
	885	com_north_b = 1
	886	ENDIF
	887	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
	888	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
	889	com_south_b = 1
	890	ENDIF
	891	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
	892	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
	893	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	894	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
	895	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
	896	com_south_b = 1
	897	endif
	898	ENDIF
	899	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
	900	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
	901	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	902	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
	903	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
	904	com_north_b = 1
	905	endif
	906	ENDIF
	907	ELSEIF(nbondj .eq. 1) THEN
	908	IF(com_south_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(3)-1 .OR. nbidta(ib,igrd,ib_bdy) == ie_b(3)+1) .AND. &
	909	& nbjdta(ib,igrd,ib_bdy) == in_b(3) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
	910	com_south_b = 1
	911	ENDIF
	912	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(3) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(3) .AND. &
	913	& nbjdta(ib,igrd,ib_bdy) >= is_b(3) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(3) .AND. &
	914	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	915	ij = nbjdta(ib,igrd,ib_bdy)- is_b(3)+2
	916	if((com_south_b .ne. 1) .and. (ij .eq. (nlcjt(noso+1)-1))) then
	917	com_south_b = 1
	918	endif
	919	ENDIF
	920	ELSEIF(nbondj .eq. -1) THEN
	921	IF(com_north_b .ne. 1 .AND. (nbidta(ib,igrd,ib_bdy) == iw_b(4)-1 .OR. nbidta(ib,igrd,ib_bdy) == ie_b(4)+1) .AND. &
	922	& nbjdta(ib,igrd,ib_bdy) == is_b(4) .AND. nbrdta(ib,igrd,ib_bdy) == ir) THEN
	923	com_north_b = 1
	924	ENDIF
	925	IF( nbidta(ib,igrd,ib_bdy) >= iw_b(4) .AND. nbidta(ib,igrd,ib_bdy) <= ie_b(4) .AND. &
	926	& nbjdta(ib,igrd,ib_bdy) >= is_b(4) .AND. nbjdta(ib,igrd,ib_bdy) <= in_b(4) .AND. &
	927	& nbrdta(ib,igrd,ib_bdy) == ir ) THEN
	928	ij = nbjdta(ib,igrd,ib_bdy)- is_b(4)+2
	929	if((com_north_b .ne. 1) .and. (ij .eq. 2)) then
	930	com_north_b = 1
	931	endif
	932	ENDIF
	933	ENDIF
[3294]	934	ENDDO
	935	ENDDO
	936	ENDDO
[3680]	937	! definition of the i- and j- direction local boundaries arrays
	938	! used for sending the boudaries
	939	IF((com_east .eq. 1) .and. (com_west .eq. 1)) THEN
	940	nbondi_bdy(ib_bdy) = 0
	941	ELSEIF ((com_east .eq. 1) .and. (com_west .eq. 0)) THEN
	942	nbondi_bdy(ib_bdy) = -1
	943	ELSEIF ((com_east .eq. 0) .and. (com_west .eq. 1)) THEN
	944	nbondi_bdy(ib_bdy) = 1
	945	ENDIF
[3294]	946
[3680]	947	IF((com_north .eq. 1) .and. (com_south .eq. 1)) THEN
	948	nbondj_bdy(ib_bdy) = 0
	949	ELSEIF ((com_north .eq. 1) .and. (com_south .eq. 0)) THEN
	950	nbondj_bdy(ib_bdy) = -1
	951	ELSEIF ((com_north .eq. 0) .and. (com_south .eq. 1)) THEN
	952	nbondj_bdy(ib_bdy) = 1
	953	ENDIF
	954
	955	! definition of the i- and j- direction local boundaries arrays
	956	! used for receiving the boudaries
	957	IF((com_east_b .eq. 1) .and. (com_west_b .eq. 1)) THEN
	958	nbondi_bdy_b(ib_bdy) = 0
	959	ELSEIF ((com_east_b .eq. 1) .and. (com_west_b .eq. 0)) THEN
	960	nbondi_bdy_b(ib_bdy) = -1
	961	ELSEIF ((com_east_b .eq. 0) .and. (com_west_b .eq. 1)) THEN
	962	nbondi_bdy_b(ib_bdy) = 1
	963	ENDIF
	964
	965	IF((com_north_b .eq. 1) .and. (com_south_b .eq. 1)) THEN
	966	nbondj_bdy_b(ib_bdy) = 0
	967	ELSEIF ((com_north_b .eq. 1) .and. (com_south_b .eq. 0)) THEN
	968	nbondj_bdy_b(ib_bdy) = -1
	969	ELSEIF ((com_north_b .eq. 0) .and. (com_south_b .eq. 1)) THEN
	970	nbondj_bdy_b(ib_bdy) = 1
	971	ENDIF
	972
[3294]	973	! Compute rim weights for FRS scheme
	974	! ----------------------------------
	975	DO igrd = 1, jpbgrd
	976	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
	977	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
	978	idx_bdy(ib_bdy)%nbw(ib,igrd) = 1.- TANH( FLOAT( nbr - 1 ) *0.5 ) ! tanh formulation
[3651]	979	! idx_bdy(ib_bdy)%nbw(ib,igrd) = (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))**2. ! quadratic
	980	! idx_bdy(ib_bdy)%nbw(ib,igrd) = FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)) ! linear
[3294]	981	END DO
	982	END DO
	983
[3651]	984	! Compute damping coefficients
	985	! ----------------------------
	986	DO igrd = 1, jpbgrd
	987	DO ib = 1, idx_bdy(ib_bdy)%nblen(igrd)
	988	nbr => idx_bdy(ib_bdy)%nbr(ib,igrd)
	989	idx_bdy(ib_bdy)%nbd(ib,igrd) = 1. / ( rn_time_dmp(ib_bdy) * rday ) &
	990	& (FLOAT(nn_rimwidth(ib_bdy)+1-nbr)/FLOAT(nn_rimwidth(ib_bdy)))*2. ! quadratic
	991	END DO
	992	END DO
	993
[3294]	994	ENDDO
	995
	996	! ------------------------------------------------------
	997	! Initialise masks and find normal/tangential directions
	998	! ------------------------------------------------------
	999
[1125]	1000	! Read global 2D mask at T-points: bdytmask
[3294]	1001	! -----------------------------------------
[1125]	1002	! bdytmask = 1 on the computational domain AND on open boundaries
	1003	! = 0 elsewhere
[911]	1004
[3651]	1005	IF( ln_mask_file ) THEN
[3294]	1006	CALL iom_open( cn_mask_file, inum )
[3651]	1007	CALL iom_get ( inum, jpdom_data, 'bdy_msk', bdytmask(:,:) )
[1125]	1008	CALL iom_close( inum )
[911]	1009
[3651]	1010	! Derive mask on U and V grid from mask on T grid
	1011	bdyumask(:,:) = 0.e0
	1012	bdyvmask(:,:) = 0.e0
	1013	DO ij=1, jpjm1
	1014	DO ii=1, jpim1
	1015	bdyumask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii+1, ij )
	1016	bdyvmask(ii,ij)=bdytmask(ii,ij)*bdytmask(ii ,ij+1)
	1017	END DO
[1125]	1018	END DO
[3651]	1019	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. ) ! Lateral boundary cond.
[911]	1020
	1021
[3651]	1022	! Mask corrections
	1023	! ----------------
	1024	DO ik = 1, jpkm1
	1025	DO ij = 1, jpj
	1026	DO ii = 1, jpi
	1027	tmask(ii,ij,ik) = tmask(ii,ij,ik) * bdytmask(ii,ij)
	1028	umask(ii,ij,ik) = umask(ii,ij,ik) * bdyumask(ii,ij)
	1029	vmask(ii,ij,ik) = vmask(ii,ij,ik) * bdyvmask(ii,ij)
	1030	bmask(ii,ij) = bmask(ii,ij) * bdytmask(ii,ij)
	1031	END DO
	1032	END DO
[1125]	1033	END DO
[911]	1034
[3651]	1035	DO ik = 1, jpkm1
	1036	DO ij = 2, jpjm1
	1037	DO ii = 2, jpim1
	1038	fmask(ii,ij,ik) = fmask(ii,ij,ik) * bdytmask(ii,ij ) * bdytmask(ii+1,ij ) &
	1039	& * bdytmask(ii,ij+1) * bdytmask(ii+1,ij+1)
	1040	END DO
	1041	END DO
[1125]	1042	END DO
[911]	1043
[3651]	1044	tmask_i (:,:) = tmask(:,:,1) * tmask_i(:,:)
	1045
	1046	ENDIF ! ln_mask_file=.TRUE.
	1047
[1125]	1048	bdytmask(:,:) = tmask(:,:,1)
[911]	1049
	1050	! bdy masks and bmask are now set to zero on boundary points:
[1125]	1051	igrd = 1 ! In the free surface case, bmask is at T-points
[3294]	1052	DO ib_bdy = 1, nb_bdy
	1053	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1054	bmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
	1055	ENDDO
	1056	ENDDO
[1125]	1057	!
	1058	igrd = 1
[3294]	1059	DO ib_bdy = 1, nb_bdy
	1060	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1061	bdytmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
	1062	ENDDO
	1063	ENDDO
[1125]	1064	!
	1065	igrd = 2
[3294]	1066	DO ib_bdy = 1, nb_bdy
	1067	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1068	bdyumask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
	1069	ENDDO
	1070	ENDDO
[1125]	1071	!
	1072	igrd = 3
[3294]	1073	DO ib_bdy = 1, nb_bdy
	1074	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1075	bdyvmask(idx_bdy(ib_bdy)%nbi(ib,igrd), idx_bdy(ib_bdy)%nbj(ib,igrd)) = 0.e0
	1076	ENDDO
	1077	ENDDO
[911]	1078
[1125]	1079	! Lateral boundary conditions
[2528]	1080	CALL lbc_lnk( fmask , 'F', 1. ) ; CALL lbc_lnk( bdytmask(:,:), 'T', 1. )
	1081	CALL lbc_lnk( bdyumask(:,:), 'U', 1. ) ; CALL lbc_lnk( bdyvmask(:,:), 'V', 1. )
[911]	1082
[3294]	1083	DO ib_bdy = 1, nb_bdy ! Indices and directions of rim velocity components
	1084
	1085	idx_bdy(ib_bdy)%flagu(:) = 0.e0
	1086	idx_bdy(ib_bdy)%flagv(:) = 0.e0
	1087	icount = 0
	1088
[1125]	1089	!flagu = -1 : u component is normal to the dynamical boundary but its direction is outward
	1090	!flagu = 0 : u is tangential
	1091	!flagu = 1 : u is normal to the boundary and is direction is inward
[3294]	1092
[1125]	1093	igrd = 2 ! u-component
[3294]	1094	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1095	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
	1096	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
	1097	zefl = bdytmask(nbi ,nbj)
	1098	zwfl = bdytmask(nbi+1,nbj)
	1099	IF( zefl + zwfl == 2 ) THEN
	1100	icount = icount + 1
[1125]	1101	ELSE
[3294]	1102	idx_bdy(ib_bdy)%flagu(ib)=-zefl+zwfl
[1125]	1103	ENDIF
	1104	END DO
[911]	1105
[1125]	1106	!flagv = -1 : u component is normal to the dynamical boundary but its direction is outward
	1107	!flagv = 0 : u is tangential
	1108	!flagv = 1 : u is normal to the boundary and is direction is inward
[911]	1109
[1125]	1110	igrd = 3 ! v-component
[3294]	1111	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1112	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
	1113	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
	1114	znfl = bdytmask(nbi,nbj )
	1115	zsfl = bdytmask(nbi,nbj+1)
	1116	IF( znfl + zsfl == 2 ) THEN
[1125]	1117	icount = icount + 1
	1118	ELSE
[3294]	1119	idx_bdy(ib_bdy)%flagv(ib) = -znfl + zsfl
[1125]	1120	END IF
	1121	END DO
[3651]	1122
[1125]	1123	IF( icount /= 0 ) THEN
	1124	IF(lwp) WRITE(numout,*)
	1125	IF(lwp) WRITE(numout,*) ' E R R O R : Some data velocity points,', &
[3294]	1126	' are not boundary points. Check nbi, nbj, indices for boundary set ',ib_bdy
[1125]	1127	IF(lwp) WRITE(numout,*) ' ========== '
	1128	IF(lwp) WRITE(numout,*)
	1129	nstop = nstop + 1
	1130	ENDIF
[911]	1131
[3294]	1132	ENDDO
[911]	1133
[1125]	1134	! Compute total lateral surface for volume correction:
	1135	! ----------------------------------------------------
[3651]	1136	! JC: this must be done at each time step with key_vvl
[911]	1137	bdysurftot = 0.e0
[2528]	1138	IF( ln_vol ) THEN
[1125]	1139	igrd = 2 ! Lateral surface at U-points
[3294]	1140	DO ib_bdy = 1, nb_bdy
	1141	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1142	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
[3632]	1143	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
[3294]	1144	flagu => idx_bdy(ib_bdy)%flagu(ib)
	1145	bdysurftot = bdysurftot + hu (nbi , nbj) &
	1146	& * e2u (nbi , nbj) * ABS( flagu ) &
	1147	& * tmask_i(nbi , nbj) &
	1148	& * tmask_i(nbi+1, nbj)
	1149	ENDDO
	1150	ENDDO
[911]	1151
[1125]	1152	igrd=3 ! Add lateral surface at V-points
[3294]	1153	DO ib_bdy = 1, nb_bdy
	1154	DO ib = 1, idx_bdy(ib_bdy)%nblenrim(igrd)
	1155	nbi => idx_bdy(ib_bdy)%nbi(ib,igrd)
[3632]	1156	nbj => idx_bdy(ib_bdy)%nbj(ib,igrd)
[3294]	1157	flagv => idx_bdy(ib_bdy)%flagv(ib)
	1158	bdysurftot = bdysurftot + hv (nbi, nbj ) &
	1159	& * e1v (nbi, nbj ) * ABS( flagv ) &
	1160	& * tmask_i(nbi, nbj ) &
	1161	& * tmask_i(nbi, nbj+1)
	1162	ENDDO
	1163	ENDDO
[2528]	1164	!
[1125]	1165	IF( lk_mpp ) CALL mpp_sum( bdysurftot ) ! sum over the global domain
[911]	1166	END IF
[3294]	1167	!
	1168	! Tidy up
	1169	!--------
[3651]	1170	IF (nb_bdy>0) THEN
	1171	DEALLOCATE(nbidta, nbjdta, nbrdta)
	1172	ENDIF
[911]	1173
[3294]	1174	IF( nn_timing == 1 ) CALL timing_stop('bdy_init')
[911]	1175
	1176	END SUBROUTINE bdy_init
	1177
[3651]	1178	SUBROUTINE bdy_ctl_seg
	1179	!!----------------------------------------------------------------------
	1180	!! * ROUTINE bdy_ctl_seg *
	1181	!!
	1182	!! ** Purpose : Check straight open boundary segments location
	1183	!!
	1184	!! ** Method : - Look for open boundary corners
	1185	!! - Check that segments start or end on land
	1186	!!----------------------------------------------------------------------
	1187	INTEGER :: ib, ib1, ib2, ji ,jj, itest
	1188	INTEGER, DIMENSION(jp_nseg,2) :: icorne, icornw, icornn, icorns
	1189	REAL(wp), DIMENSION(2) :: ztestmask
	1190	!!----------------------------------------------------------------------
	1191	!
	1192	IF (lwp) WRITE(numout,*) ' '
	1193	IF (lwp) WRITE(numout,*) 'bdy_ctl_seg: Check analytical segments'
	1194	IF (lwp) WRITE(numout,*) '~~~~~~~~~~~~'
	1195	!
	1196	IF(lwp) WRITE(numout,*) 'Number of east segments : ', nbdysege
	1197	IF(lwp) WRITE(numout,*) 'Number of west segments : ', nbdysegw
	1198	IF(lwp) WRITE(numout,*) 'Number of north segments : ', nbdysegn
	1199	IF(lwp) WRITE(numout,*) 'Number of south segments : ', nbdysegs
	1200	! 1. Check bounds
	1201	!----------------
	1202	DO ib = 1, nbdysegn
	1203	IF (lwp) WRITE(numout,) '*check north seg bounds pckg: ', npckgn(ib)
	1204	IF ((jpjnob(ib).ge.jpjglo-1).or.&
	1205	&(jpjnob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
	1206	IF (jpindt(ib).ge.jpinft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
	1207	IF (jpindt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
	1208	IF (jpinft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
	1209	END DO
	1210	!
	1211	DO ib = 1, nbdysegs
	1212	IF (lwp) WRITE(numout,) '*check south seg bounds pckg: ', npckgs(ib)
	1213	IF ((jpjsob(ib).ge.jpjglo-1).or.&
	1214	&(jpjsob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
	1215	IF (jpisdt(ib).ge.jpisft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
	1216	IF (jpisdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
	1217	IF (jpisft(ib).ge.jpiglo) CALL ctl_stop( 'End index out of domain' )
	1218	END DO
	1219	!
	1220	DO ib = 1, nbdysege
	1221	IF (lwp) WRITE(numout,) '*check east seg bounds pckg: ', npckge(ib)
	1222	IF ((jpieob(ib).ge.jpiglo-1).or.&
	1223	&(jpieob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
	1224	IF (jpjedt(ib).ge.jpjeft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
	1225	IF (jpjedt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
	1226	IF (jpjeft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
	1227	END DO
	1228	!
	1229	DO ib = 1, nbdysegw
	1230	IF (lwp) WRITE(numout,) '*check west seg bounds pckg: ', npckgw(ib)
	1231	IF ((jpiwob(ib).ge.jpiglo-1).or.&
	1232	&(jpiwob(ib).le.1)) CALL ctl_stop( 'nbdyind out of domain' )
	1233	IF (jpjwdt(ib).ge.jpjwft(ib)) CALL ctl_stop( 'Bdy start index is greater than end index' )
	1234	IF (jpjwdt(ib).le.1 ) CALL ctl_stop( 'Start index out of domain' )
	1235	IF (jpjwft(ib).ge.jpjglo) CALL ctl_stop( 'End index out of domain' )
	1236	ENDDO
	1237	!
	1238	!
	1239	! 2. Look for segment crossings
	1240	!------------------------------
	1241	IF (lwp) WRITE(numout,) '*Look for segments corners :'
	1242	!
	1243	itest = 0 ! corner number
	1244	!
	1245	! flag to detect if start or end of open boundary belongs to a corner
	1246	! if not (=0), it must be on land.
	1247	! if a corner is detected, save bdy package number for further tests
	1248	icorne(:,:)=0. ; icornw(:,:)=0. ; icornn(:,:)=0. ; icorns(:,:)=0.
	1249	! South/West crossings
	1250	IF ((nbdysegw > 0).AND.(nbdysegs > 0)) THEN
	1251	DO ib1 = 1, nbdysegw
	1252	DO ib2 = 1, nbdysegs
	1253	IF (( jpisdt(ib2)<=jpiwob(ib1)).AND. &
	1254	& ( jpisft(ib2)>=jpiwob(ib1)).AND. &
	1255	& ( jpjwdt(ib1)<=jpjsob(ib2)).AND. &
	1256	& ( jpjwft(ib1)>=jpjsob(ib2))) THEN
	1257	IF ((jpjwdt(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpiwob(ib1))) THEN
	1258	! We have a possible South-West corner
	1259	! WRITE(numout,*) ' Found a South-West corner at (i,j): ', jpisdt(ib2), jpjwdt(ib1)
	1260	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgs(ib2)
	1261	icornw(ib1,1) = npckgs(ib2)
	1262	icorns(ib2,1) = npckgw(ib1)
	1263	ELSEIF ((jpisft(ib2)==jpiwob(ib1)).AND.(jpjwft(ib1)==jpjsob(ib2))) THEN
	1264	IF(lwp) WRITE(numout,*)
	1265	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
	1266	& jpisft(ib2), jpjwft(ib1)
	1267	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
	1268	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
	1269	& ' and South segment: ',npckgs(ib2)
	1270	IF(lwp) WRITE(numout,*)
	1271	nstop = nstop + 1
	1272	ELSE
	1273	IF(lwp) WRITE(numout,*)
	1274	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and West Open boundary indices'
	1275	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1) , &
	1276	& ' and South segment: ',npckgs(ib2)
	1277	IF(lwp) WRITE(numout,*)
	1278	nstop = nstop+1
	1279	END IF
	1280	END IF
	1281	END DO
	1282	END DO
	1283	END IF
	1284	!
	1285	! South/East crossings
	1286	IF ((nbdysege > 0).AND.(nbdysegs > 0)) THEN
	1287	DO ib1 = 1, nbdysege
	1288	DO ib2 = 1, nbdysegs
	1289	IF (( jpisdt(ib2)<=jpieob(ib1)+1).AND. &
	1290	& ( jpisft(ib2)>=jpieob(ib1)+1).AND. &
	1291	& ( jpjedt(ib1)<=jpjsob(ib2) ).AND. &
	1292	& ( jpjeft(ib1)>=jpjsob(ib2) )) THEN
	1293	IF ((jpjedt(ib1)==jpjsob(ib2)).AND.(jpisft(ib2)==jpieob(ib1)+1)) THEN
	1294	! We have a possible South-East corner
	1295	! WRITE(numout,*) ' Found a South-East corner at (i,j): ', jpisft(ib2), jpjedt(ib1)
	1296	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgs(ib2)
	1297	icorne(ib1,1) = npckgs(ib2)
	1298	icorns(ib2,2) = npckge(ib1)
	1299	ELSEIF ((jpjeft(ib1)==jpjsob(ib2)).AND.(jpisdt(ib2)==jpieob(ib1)+1)) THEN
	1300	IF(lwp) WRITE(numout,*)
	1301	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
	1302	& jpisdt(ib2), jpjeft(ib1)
	1303	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
	1304	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
	1305	& ' and South segment: ',npckgs(ib2)
	1306	IF(lwp) WRITE(numout,*)
	1307	nstop = nstop + 1
	1308	ELSE
	1309	IF(lwp) WRITE(numout,*)
	1310	IF(lwp) WRITE(numout,*) ' E R R O R : Check South and East Open boundary indices'
	1311	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
	1312	& ' and South segment: ',npckgs(ib2)
	1313	IF(lwp) WRITE(numout,*)
	1314	nstop = nstop + 1
	1315	END IF
	1316	END IF
	1317	END DO
	1318	END DO
	1319	END IF
	1320	!
	1321	! North/West crossings
	1322	IF ((nbdysegn > 0).AND.(nbdysegw > 0)) THEN
	1323	DO ib1 = 1, nbdysegw
	1324	DO ib2 = 1, nbdysegn
	1325	IF (( jpindt(ib2)<=jpiwob(ib1) ).AND. &
	1326	& ( jpinft(ib2)>=jpiwob(ib1) ).AND. &
	1327	& ( jpjwdt(ib1)<=jpjnob(ib2)+1).AND. &
	1328	& ( jpjwft(ib1)>=jpjnob(ib2)+1)) THEN
	1329	IF ((jpjwft(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpiwob(ib1))) THEN
	1330	! We have a possible North-West corner
	1331	! WRITE(numout,*) ' Found a North-West corner at (i,j): ', jpindt(ib2), jpjwft(ib1)
	1332	! WRITE(numout,*) ' between segments: ', npckgw(ib1), npckgn(ib2)
	1333	icornw(ib1,2) = npckgn(ib2)
	1334	icornn(ib2,1) = npckgw(ib1)
	1335	ELSEIF ((jpjwdt(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpiwob(ib1))) THEN
	1336	IF(lwp) WRITE(numout,*)
	1337	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
	1338	& jpinft(ib2), jpjwdt(ib1)
	1339	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
	1340	IF(lwp) WRITE(numout,*) ' Crossing problem with West segment: ',npckgw(ib1), &
	1341	& ' and North segment: ',npckgn(ib2)
	1342	IF(lwp) WRITE(numout,*)
	1343	nstop = nstop + 1
	1344	ELSE
	1345	IF(lwp) WRITE(numout,*)
	1346	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and West Open boundary indices'
	1347	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with West segment: ',npckgw(ib1), &
	1348	& ' and North segment: ',npckgn(ib2)
	1349	IF(lwp) WRITE(numout,*)
	1350	nstop = nstop + 1
	1351	END IF
	1352	END IF
	1353	END DO
	1354	END DO
	1355	END IF
	1356	!
	1357	! North/East crossings
	1358	IF ((nbdysegn > 0).AND.(nbdysege > 0)) THEN
	1359	DO ib1 = 1, nbdysege
	1360	DO ib2 = 1, nbdysegn
	1361	IF (( jpindt(ib2)<=jpieob(ib1)+1).AND. &
	1362	& ( jpinft(ib2)>=jpieob(ib1)+1).AND. &
	1363	& ( jpjedt(ib1)<=jpjnob(ib2)+1).AND. &
	1364	& ( jpjeft(ib1)>=jpjnob(ib2)+1)) THEN
	1365	IF ((jpjeft(ib1)==jpjnob(ib2)+1).AND.(jpinft(ib2)==jpieob(ib1)+1)) THEN
	1366	! We have a possible North-East corner
	1367	! WRITE(numout,*) ' Found a North-East corner at (i,j): ', jpinft(ib2), jpjeft(ib1)
	1368	! WRITE(numout,*) ' between segments: ', npckge(ib1), npckgn(ib2)
	1369	icorne(ib1,2) = npckgn(ib2)
	1370	icornn(ib2,2) = npckge(ib1)
	1371	ELSEIF ((jpjedt(ib1)==jpjnob(ib2)+1).AND.(jpindt(ib2)==jpieob(ib1)+1)) THEN
	1372	IF(lwp) WRITE(numout,*)
	1373	IF(lwp) WRITE(numout,*) ' E R R O R : Found an acute open boundary corner at point (i,j)= ', &
	1374	& jpindt(ib2), jpjedt(ib1)
	1375	IF(lwp) WRITE(numout,*) ' ========== Not allowed yet'
	1376	IF(lwp) WRITE(numout,*) ' Crossing problem with East segment: ',npckge(ib1), &
	1377	& ' and North segment: ',npckgn(ib2)
	1378	IF(lwp) WRITE(numout,*)
	1379	nstop = nstop + 1
	1380	ELSE
	1381	IF(lwp) WRITE(numout,*)
	1382	IF(lwp) WRITE(numout,*) ' E R R O R : Check North and East Open boundary indices'
	1383	IF(lwp) WRITE(numout,*) ' ========== Crossing problem with East segment: ',npckge(ib1), &
	1384	& ' and North segment: ',npckgn(ib2)
	1385	IF(lwp) WRITE(numout,*)
	1386	nstop = nstop + 1
	1387	END IF
	1388	END IF
	1389	END DO
	1390	END DO
	1391	END IF
	1392	!
	1393	! 3. Check if segment extremities are on land
	1394	!--------------------------------------------
	1395	!
	1396	! West segments
	1397	DO ib = 1, nbdysegw
	1398	! get mask at boundary extremities:
	1399	ztestmask(1:2)=0.
	1400	DO ji = 1, jpi
	1401	DO jj = 1, jpj
	1402	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
	1403	& ((jj + njmpp - 1) == jpjwdt(ib))) ztestmask(1)=tmask(ji,jj,1)
	1404	IF (((ji + nimpp - 1) == jpiwob(ib)).AND. &
	1405	& ((jj + njmpp - 1) == jpjwft(ib))) ztestmask(2)=tmask(ji,jj,1)
	1406	END DO
	1407	END DO
	1408	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
	1409
	1410	IF (ztestmask(1)==1) THEN
	1411	IF (icornw(ib,1)==0) THEN
	1412	IF(lwp) WRITE(numout,*)
	1413	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
	1414	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
	1415	IF(lwp) WRITE(numout,*)
	1416	nstop = nstop + 1
	1417	ELSE
	1418	! This is a corner
	1419	WRITE(numout,*) 'Found a South-West corner at (i,j): ', jpiwob(ib), jpjwdt(ib)
	1420	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,1))
	1421	itest=itest+1
	1422	ENDIF
	1423	ENDIF
	1424	IF (ztestmask(2)==1) THEN
	1425	IF (icornw(ib,2)==0) THEN
	1426	IF(lwp) WRITE(numout,*)
	1427	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgw(ib)
	1428	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
	1429	IF(lwp) WRITE(numout,*)
	1430	nstop = nstop + 1
	1431	ELSE
	1432	! This is a corner
	1433	WRITE(numout,*) 'Found a North-West corner at (i,j): ', jpiwob(ib), jpjwft(ib)
	1434	CALL bdy_ctl_corn(npckgw(ib), icornw(ib,2))
	1435	itest=itest+1
	1436	ENDIF
	1437	ENDIF
	1438	END DO
	1439	!
	1440	! East segments
	1441	DO ib = 1, nbdysege
	1442	! get mask at boundary extremities:
	1443	ztestmask(1:2)=0.
	1444	DO ji = 1, jpi
	1445	DO jj = 1, jpj
	1446	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
	1447	& ((jj + njmpp - 1) == jpjedt(ib))) ztestmask(1)=tmask(ji,jj,1)
	1448	IF (((ji + nimpp - 1) == jpieob(ib)+1).AND. &
	1449	& ((jj + njmpp - 1) == jpjeft(ib))) ztestmask(2)=tmask(ji,jj,1)
	1450	END DO
	1451	END DO
	1452	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
	1453
	1454	IF (ztestmask(1)==1) THEN
	1455	IF (icorne(ib,1)==0) THEN
	1456	IF(lwp) WRITE(numout,*)
	1457	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
	1458	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
	1459	IF(lwp) WRITE(numout,*)
	1460	nstop = nstop + 1
	1461	ELSE
	1462	! This is a corner
	1463	WRITE(numout,*) 'Found a South-East corner at (i,j): ', jpieob(ib)+1, jpjedt(ib)
	1464	CALL bdy_ctl_corn(npckge(ib), icorne(ib,1))
	1465	itest=itest+1
	1466	ENDIF
	1467	ENDIF
	1468	IF (ztestmask(2)==1) THEN
	1469	IF (icorne(ib,2)==0) THEN
	1470	IF(lwp) WRITE(numout,*)
	1471	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckge(ib)
	1472	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
	1473	IF(lwp) WRITE(numout,*)
	1474	nstop = nstop + 1
	1475	ELSE
	1476	! This is a corner
	1477	WRITE(numout,*) 'Found a North-East corner at (i,j): ', jpieob(ib)+1, jpjeft(ib)
	1478	CALL bdy_ctl_corn(npckge(ib), icorne(ib,2))
	1479	itest=itest+1
	1480	ENDIF
	1481	ENDIF
	1482	END DO
	1483	!
	1484	! South segments
	1485	DO ib = 1, nbdysegs
	1486	! get mask at boundary extremities:
	1487	ztestmask(1:2)=0.
	1488	DO ji = 1, jpi
	1489	DO jj = 1, jpj
	1490	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
	1491	& ((ji + nimpp - 1) == jpisdt(ib))) ztestmask(1)=tmask(ji,jj,1)
	1492	IF (((jj + njmpp - 1) == jpjsob(ib)).AND. &
	1493	& ((ji + nimpp - 1) == jpisft(ib))) ztestmask(2)=tmask(ji,jj,1)
	1494	END DO
	1495	END DO
	1496	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
	1497
	1498	IF ((ztestmask(1)==1).AND.(icorns(ib,1)==0)) THEN
	1499	IF(lwp) WRITE(numout,*)
	1500	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
	1501	IF(lwp) WRITE(numout,*) ' ========== does not start on land or on a corner'
	1502	IF(lwp) WRITE(numout,*)
	1503	nstop = nstop + 1
	1504	ENDIF
	1505	IF ((ztestmask(2)==1).AND.(icorns(ib,2)==0)) THEN
	1506	IF(lwp) WRITE(numout,*)
	1507	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgs(ib)
	1508	IF(lwp) WRITE(numout,*) ' ========== does not end on land or on a corner'
	1509	IF(lwp) WRITE(numout,*)
	1510	nstop = nstop + 1
	1511	ENDIF
	1512	END DO
	1513	!
	1514	! North segments
	1515	DO ib = 1, nbdysegn
	1516	! get mask at boundary extremities:
	1517	ztestmask(1:2)=0.
	1518	DO ji = 1, jpi
	1519	DO jj = 1, jpj
	1520	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
	1521	& ((ji + nimpp - 1) == jpindt(ib))) ztestmask(1)=tmask(ji,jj,1)
	1522	IF (((jj + njmpp - 1) == jpjnob(ib)+1).AND. &
	1523	& ((ji + nimpp - 1) == jpinft(ib))) ztestmask(2)=tmask(ji,jj,1)
	1524	END DO
	1525	END DO
	1526	IF( lk_mpp ) CALL mpp_sum( ztestmask, 2 ) ! sum over the global domain
	1527
	1528	IF ((ztestmask(1)==1).AND.(icornn(ib,1)==0)) THEN
	1529	IF(lwp) WRITE(numout,*)
	1530	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
	1531	IF(lwp) WRITE(numout,*) ' ========== does not start on land'
	1532	IF(lwp) WRITE(numout,*)
	1533	nstop = nstop + 1
	1534	ENDIF
	1535	IF ((ztestmask(2)==1).AND.(icornn(ib,2)==0)) THEN
	1536	IF(lwp) WRITE(numout,*)
	1537	IF(lwp) WRITE(numout,*) ' E R R O R : Open boundary segment ', npckgn(ib)
	1538	IF(lwp) WRITE(numout,*) ' ========== does not end on land'
	1539	IF(lwp) WRITE(numout,*)
	1540	nstop = nstop + 1
	1541	ENDIF
	1542	END DO
	1543	!
	1544	IF ((itest==0).AND.(lwp)) WRITE(numout,*) 'NO open boundary corner found'
	1545	!
	1546	! Other tests TBD:
	1547	! segments completly on land
	1548	! optimized open boundary array length according to landmask
	1549	! Nudging layers that overlap with interior domain
	1550	!
	1551	END SUBROUTINE bdy_ctl_seg
	1552
	1553	SUBROUTINE bdy_ctl_corn( ib1, ib2 )
	1554	!!----------------------------------------------------------------------
	1555	!! * ROUTINE bdy_ctl_corn *
	1556	!!
	1557	!! ** Purpose : Check numerical schemes consistency between
	1558	!! segments having a common corner
	1559	!!
	1560	!! ** Method :
	1561	!!----------------------------------------------------------------------
	1562	INTEGER, INTENT(in) :: ib1, ib2
	1563	INTEGER :: itest
	1564	!!----------------------------------------------------------------------
	1565	itest = 0
	1566
	1567	IF (nn_dyn2d(ib1)/=nn_dyn2d(ib2)) itest = itest + 1
	1568	IF (nn_dyn3d(ib1)/=nn_dyn3d(ib2)) itest = itest + 1
	1569	IF (nn_tra(ib1)/=nn_tra(ib2)) itest = itest + 1
	1570	!
	1571	IF (nn_dyn2d_dta(ib1)/=nn_dyn2d_dta(ib2)) itest = itest + 1
	1572	IF (nn_dyn3d_dta(ib1)/=nn_dyn3d_dta(ib2)) itest = itest + 1
	1573	IF (nn_tra_dta(ib1)/=nn_tra_dta(ib2)) itest = itest + 1
	1574	!
	1575	IF (nn_rimwidth(ib1)/=nn_rimwidth(ib2)) itest = itest + 1
	1576	!
	1577	IF ( itest>0 ) THEN
	1578	IF(lwp) WRITE(numout,*) ' E R R O R : Segments ', ib1, 'and ', ib2
	1579	IF(lwp) WRITE(numout,*) ' ========== have different open bdy schemes'
	1580	IF(lwp) WRITE(numout,*)
	1581	nstop = nstop + 1
	1582	ENDIF
	1583	!
	1584	END SUBROUTINE bdy_ctl_corn
	1585
[911]	1586	#else
	1587	!!---------------------------------------------------------------------------------
[3294]	1588	!! Dummy module NO open boundaries
[911]	1589	!!---------------------------------------------------------------------------------
	1590	CONTAINS
	1591	SUBROUTINE bdy_init ! Dummy routine
	1592	END SUBROUTINE bdy_init
	1593	#endif
	1594
	1595	!!=================================================================================
	1596	END MODULE bdyini

Note: See TracBrowser for help on using the repository browser.

Download in other formats: