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trcbc.F90 in NEMO/branches/2019/dev_r10721_KERNEL-02_Storkey_Coward_IMMERSE_first_steps/src/TOP – NEMO

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source: NEMO/branches/2019/dev_r10721_KERNEL-02_Storkey_Coward_IMMERSE_first_steps/src/TOP/trcbc.F90 @ 11527

Last change on this file since 11527 was 10963, checked in by acc, 5 years ago
2019/dev_r10721_KERNEL-02_Storkey_Coward_IMMERSE_first_steps : Convert TOP routines in top-level TOP directory and all knock on effects of these conversions. SETTE tested.
Property svn:keywords set to `Id`
File size: 23.4 KB

Rev	Line
[4058]	1	MODULE trcbc
	2	!!======================================================================
[6140]	3	!! * MODULE trcbc *
[4058]	4	!! TOP : module for passive tracer boundary conditions
	5	!!=====================================================================
[7646]	6	!! History : 3.5 ! 2014 (M. Vichi, T. Lovato) Original
	7	!! 3.6 ! 2015 (T . Lovato) Revision and BDY support
	8	!! 4.0 ! 2016 (T . Lovato) Include application of sbc and cbc
[4058]	9	!!----------------------------------------------------------------------
[6140]	10	#if defined key_top
[4058]	11	!!----------------------------------------------------------------------
	12	!! 'key_top' TOP model
	13	!!----------------------------------------------------------------------
[7646]	14	!! trc_bc : Apply tracer Boundary Conditions
[4058]	15	!!----------------------------------------------------------------------
	16	USE par_trc ! passive tracers parameters
	17	USE oce_trc ! shared variables between ocean and passive tracers
	18	USE trc ! passive tracers common variables
	19	USE iom ! I/O manager
	20	USE lib_mpp ! MPP library
	21	USE fldread ! read input fields
[7646]	22	USE bdy_oce, ONLY: ln_bdy, nb_bdy , idx_bdy, ln_coords_file, rn_time_dmp, rn_time_dmp_out
[4058]	23
	24	IMPLICIT NONE
	25	PRIVATE
	26
[7646]	27	PUBLIC trc_bc ! called in trcstp.F90 or within TOP modules
	28	PUBLIC trc_bc_ini ! called in trcini.F90
[4058]	29
[6140]	30	INTEGER , SAVE, PUBLIC :: nb_trcobc ! number of tracers with open BC
	31	INTEGER , SAVE, PUBLIC :: nb_trcsbc ! number of tracers with surface BC
	32	INTEGER , SAVE, PUBLIC :: nb_trccbc ! number of tracers with coastal BC
[4058]	33	INTEGER , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: n_trc_indobc ! index of tracer with OBC data
	34	INTEGER , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: n_trc_indsbc ! index of tracer with SBC data
	35	INTEGER , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: n_trc_indcbc ! index of tracer with CBC data
[6140]	36	REAL(wp) , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: rf_trsfac ! multiplicative factor for SBC tracer values
	37	TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_trcsbc ! structure of data input SBC (file informations, fields read)
	38	REAL(wp) , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: rf_trcfac ! multiplicative factor for CBC tracer values
	39	TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_trccbc ! structure of data input CBC (file informations, fields read)
	40	REAL(wp) , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: rf_trofac ! multiplicative factor for OBCtracer values
[9800]	41	#if defined key_agrif
[9788]	42	TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_trcobc ! structure of data input OBC (file informations, fields read)
[9800]	43	#else
	44	TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:), TARGET :: sf_trcobc
	45	#endif
[6140]	46	TYPE(MAP_POINTER), ALLOCATABLE, DIMENSION(:) :: nbmap_ptr ! array of pointers to nbmap
[4058]	47
[7646]	48	!! * Substitutions
	49	# include "vectopt_loop_substitute.h90"
[4058]	50	!!----------------------------------------------------------------------
[9598]	51	!! NEMO/TOP 4.0 , NEMO Consortium (2018)
[6140]	52	!! $Id$
[10068]	53	!! Software governed by the CeCILL license (see ./LICENSE)
[4058]	54	!!----------------------------------------------------------------------
	55	CONTAINS
	56
[10963]	57	SUBROUTINE trc_bc_ini( ntrc, Kmm )
[4058]	58	!!----------------------------------------------------------------------
[7646]	59	!! * ROUTINE trc_bc_ini *
[4058]	60	!!
	61	!! ** Purpose : initialisation of passive tracer BC data
	62	!!
	63	!! ** Method : - Read namtsd namelist
	64	!! - allocates passive tracer BC data structure
	65	!!----------------------------------------------------------------------
[10963]	66	INTEGER, INTENT(in) :: ntrc ! number of tracers
	67	INTEGER, INTENT(in) :: Kmm ! time level index
[9169]	68	!
[6140]	69	INTEGER :: jl, jn , ib, ibd, ii, ij, ik ! dummy loop indices
[4058]	70	INTEGER :: ierr0, ierr1, ierr2, ierr3 ! temporary integers
[6140]	71	INTEGER :: ios ! Local integer output status for namelist read
	72	INTEGER :: nblen, igrd ! support arrays for BDY
[4058]	73	CHARACTER(len=100) :: clndta, clntrc
	74	!
[6140]	75	CHARACTER(len=100) :: cn_dir_sbc, cn_dir_cbc, cn_dir_obc
[4058]	76	TYPE(FLD_N), ALLOCATABLE, DIMENSION(:) :: slf_i ! local array of namelist informations on the fields to read
	77	TYPE(FLD_N), DIMENSION(jpmaxtrc) :: sn_trcobc ! open
	78	TYPE(FLD_N), DIMENSION(jpmaxtrc) :: sn_trcsbc ! surface
	79	TYPE(FLD_N), DIMENSION(jpmaxtrc) :: sn_trccbc ! coastal
	80	REAL(wp) , DIMENSION(jpmaxtrc) :: rn_trofac ! multiplicative factor for tracer values
	81	REAL(wp) , DIMENSION(jpmaxtrc) :: rn_trsfac ! multiplicative factor for tracer values
	82	REAL(wp) , DIMENSION(jpmaxtrc) :: rn_trcfac ! multiplicative factor for tracer values
	83	!!
[7646]	84	NAMELIST/namtrc_bc/ cn_dir_obc, sn_trcobc, rn_trofac, cn_dir_sbc, sn_trcsbc, rn_trsfac, &
	85	& cn_dir_cbc, sn_trccbc, rn_trcfac, ln_rnf_ctl, rn_bc_time
[6140]	86	NAMELIST/namtrc_bdy/ cn_trc_dflt, cn_trc, nn_trcdmp_bdy
[4058]	87	!!----------------------------------------------------------------------
	88	!
[6140]	89	IF( lwp ) THEN
[9169]	90	WRITE(numout,*)
[7646]	91	WRITE(numout,*) 'trc_bc_ini : Tracers Boundary Conditions (BC)'
[6140]	92	WRITE(numout,*) '~~~~~~~~~~~ '
	93	ENDIF
[4058]	94	! Initialisation and local array allocation
[9169]	95	ierr0 = 0 ; ierr1 = 0 ; ierr2 = 0 ; ierr3 = 0
[4058]	96	ALLOCATE( slf_i(ntrc), STAT=ierr0 )
	97	IF( ierr0 > 0 ) THEN
[7646]	98	CALL ctl_stop( 'trc_bc_ini: unable to allocate local slf_i' ) ; RETURN
[4058]	99	ENDIF
	100
	101	! Compute the number of tracers to be initialised with open, surface and boundary data
	102	ALLOCATE( n_trc_indobc(ntrc), STAT=ierr0 )
	103	IF( ierr0 > 0 ) THEN
[7646]	104	CALL ctl_stop( 'trc_bc_ini: unable to allocate n_trc_indobc' ) ; RETURN
[4058]	105	ENDIF
[9169]	106	nb_trcobc = 0
[4058]	107	n_trc_indobc(:) = 0
	108	!
	109	ALLOCATE( n_trc_indsbc(ntrc), STAT=ierr0 )
	110	IF( ierr0 > 0 ) THEN
[7646]	111	CALL ctl_stop( 'trc_bc_ini: unable to allocate n_trc_indsbc' ) ; RETURN
[4058]	112	ENDIF
[9169]	113	nb_trcsbc = 0
[4058]	114	n_trc_indsbc(:) = 0
	115	!
	116	ALLOCATE( n_trc_indcbc(ntrc), STAT=ierr0 )
	117	IF( ierr0 > 0 ) THEN
[7646]	118	CALL ctl_stop( 'trc_bc_ini: unable to allocate n_trc_indcbc' ) ; RETURN
[4058]	119	ENDIF
[9169]	120	nb_trccbc = 0
[4058]	121	n_trc_indcbc(:) = 0
	122	!
[6140]	123	! Read Boundary Conditions Namelists
	124	REWIND( numnat_ref ) ! Namelist namtrc_bc in reference namelist : Passive tracer data structure
	125	READ ( numnat_ref, namtrc_bc, IOSTAT = ios, ERR = 901)
[9169]	126	901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_bc in reference namelist', lwp )
[6140]	127	REWIND( numnat_cfg ) ! Namelist namtrc_bc in configuration namelist : Passive tracer data structure
	128	READ ( numnat_cfg, namtrc_bc, IOSTAT = ios, ERR = 902 )
[9169]	129	902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtrc_bc in configuration namelist', lwp )
[6140]	130	IF(lwm) WRITE ( numont, namtrc_bc )
	131
[7646]	132	IF ( ln_bdy ) THEN
	133	REWIND( numnat_ref ) ! Namelist namtrc_bdy in reference namelist : Passive tracer data structure
	134	READ ( numnat_ref, namtrc_bdy, IOSTAT = ios, ERR = 903)
[9169]	135	903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_bdy in reference namelist', lwp )
[6140]	136
[7646]	137	REWIND( numnat_cfg ) ! Namelist namtrc_bdy in configuration namelist : Passive tracer data structure
	138	READ ( numnat_cfg, namtrc_bdy, IOSTAT = ios, ERR = 904 )
[9169]	139	904 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtrc_bdy in configuration namelist', lwp )
[7646]	140	IF(lwm) WRITE ( numont, namtrc_bdy )
	141
	142	! setup up preliminary informations for BDY structure
	143	DO jn = 1, ntrc
	144	DO ib = 1, nb_bdy
	145	! Set type of obc in BDY data structure (around here we may plug user override of obc type from nml)
[9169]	146	IF ( ln_trc_obc(jn) ) THEN ; trcdta_bdy(jn,ib)%cn_obc = TRIM( cn_trc (ib) )
	147	ELSE ; trcdta_bdy(jn,ib)%cn_obc = TRIM( cn_trc_dflt(ib) )
[7646]	148	ENDIF
	149	! set damping use in BDY data structure
	150	trcdta_bdy(jn,ib)%dmp = .false.
[9169]	151	IF(nn_trcdmp_bdy(ib) == 1 .AND. ln_trc_obc(jn) ) trcdta_bdy(jn,ib)%dmp = .true.
	152	IF(nn_trcdmp_bdy(ib) == 2 ) trcdta_bdy(jn,ib)%dmp = .true.
	153	IF(trcdta_bdy(jn,ib)%cn_obc == 'frs' .AND. nn_trcdmp_bdy(ib) /= 0 ) &
	154	& CALL ctl_stop( 'trc_bc_ini: Use FRS OR relaxation' )
	155	IF( .NOT.( 0 < nn_trcdmp_bdy(ib) .AND. nn_trcdmp_bdy(ib) <= 2 ) ) &
	156	& CALL ctl_stop( 'trc_bc_ini: Not a valid option for nn_trcdmp_bdy. Allowed: 0,1,2.' )
	157	END DO
	158	END DO
[7646]	159	ELSE
	160	! Force all tracers OBC to false if bdy not used
	161	ln_trc_obc = .false.
	162	ENDIF
[6140]	163
	164	! compose BC data indexes
	165	DO jn = 1, ntrc
[4058]	166	IF( ln_trc_obc(jn) ) THEN
[9169]	167	nb_trcobc = nb_trcobc + 1 ; n_trc_indobc(jn) = nb_trcobc
[4058]	168	ENDIF
	169	IF( ln_trc_sbc(jn) ) THEN
[9169]	170	nb_trcsbc = nb_trcsbc + 1 ; n_trc_indsbc(jn) = nb_trcsbc
[4058]	171	ENDIF
	172	IF( ln_trc_cbc(jn) ) THEN
[9169]	173	nb_trccbc = nb_trccbc + 1 ; n_trc_indcbc(jn) = nb_trccbc
[4058]	174	ENDIF
[9169]	175	END DO
[4058]	176
[6140]	177	! Print summmary of Boundary Conditions
	178	IF( lwp ) THEN
[9169]	179	WRITE(numout,*)
[6140]	180	WRITE(numout,'(a,i3)') ' Total tracers to be initialized with SURFACE BCs data:', nb_trcsbc
	181	IF ( nb_trcsbc > 0 ) THEN
	182	WRITE(numout,*) ' #trc NAME Boundary Mult.Fact. '
	183	DO jn = 1, ntrc
	184	IF ( ln_trc_sbc(jn) ) WRITE(numout,9001) jn, TRIM( sn_trcsbc(jn)%clvar ), 'SBC', rn_trsfac(jn)
[9169]	185	END DO
[6140]	186	ENDIF
	187	WRITE(numout,'(2a)') ' SURFACE BC data repository : ', TRIM(cn_dir_sbc)
[9169]	188	!
	189	WRITE(numout,*)
[6140]	190	WRITE(numout,'(a,i3)') ' Total tracers to be initialized with COASTAL BCs data:', nb_trccbc
[7646]	191	IF( nb_trccbc > 0 ) THEN
[6140]	192	WRITE(numout,*) ' #trc NAME Boundary Mult.Fact. '
	193	DO jn = 1, ntrc
	194	IF ( ln_trc_cbc(jn) ) WRITE(numout, 9001) jn, TRIM( sn_trccbc(jn)%clvar ), 'CBC', rn_trcfac(jn)
[9169]	195	END DO
[6140]	196	ENDIF
	197	WRITE(numout,'(2a)') ' COASTAL BC data repository : ', TRIM(cn_dir_cbc)
[9169]	198	IF( .NOT.ln_rnf .OR. .NOT.ln_linssh ) ln_rnf_ctl = .FALSE.
[9119]	199	IF( ln_rnf_ctl ) WRITE(numout,'(a)') &
	200	& ' -> Remove runoff dilution effect on tracers with absent river load (ln_rnf_ctl = .TRUE.)'
[9169]	201	WRITE(numout,*)
[6140]	202	WRITE(numout,'(a,i3)') ' Total tracers to be initialized with OPEN BCs data:', nb_trcobc
[7646]	203
	204	IF( ln_bdy .AND. nb_trcobc > 0 ) THEN
[6140]	205	WRITE(numout,*) ' #trc NAME Boundary Mult.Fact. OBC Settings'
	206	DO jn = 1, ntrc
[9119]	207	IF ( ln_trc_obc(jn) ) WRITE(numout, 9001) jn, TRIM( sn_trcobc(jn)%clvar ), 'OBC', rn_trofac(jn), &
	208	& (trcdta_bdy(jn,ib)%cn_obc,ib=1,nb_bdy)
	209	IF ( .NOT. ln_trc_obc(jn) ) WRITE(numout, 9002) jn, 'Set data to IC and use default condition' , &
	210	& (trcdta_bdy(jn,ib)%cn_obc,ib=1,nb_bdy)
[9169]	211	END DO
[6140]	212	WRITE(numout,*) ' '
	213	DO ib = 1, nb_bdy
[9169]	214	IF(nn_trcdmp_bdy(ib) == 0) WRITE(numout,9003) ' Boundary ', ib, &
	215	& ' -> NO damping of tracers'
	216	IF(nn_trcdmp_bdy(ib) == 1) WRITE(numout,9003) ' Boundary ', ib, &
	217	& ' -> damping ONLY for tracers with external data provided'
	218	IF(nn_trcdmp_bdy(ib) == 2) WRITE(numout,9003) ' Boundary ', ib, &
	219	& ' -> damping of ALL tracers'
	220	IF(nn_trcdmp_bdy(ib) > 0) THEN
[6140]	221	WRITE(numout,9003) ' USE damping parameters from nambdy for boundary ', ib,' : '
[9169]	222	WRITE(numout,'(a,f10.2,a)') ' - Inflow damping time scale : ',rn_time_dmp (ib),' days'
[6140]	223	WRITE(numout,'(a,f10.2,a)') ' - Outflow damping time scale : ',rn_time_dmp_out(ib),' days'
[9169]	224	ENDIF
	225	END DO
[6140]	226	ENDIF
[9169]	227	!
[6140]	228	WRITE(numout,'(2a)') ' OPEN BC data repository : ', TRIM(cn_dir_obc)
[4058]	229	ENDIF
[6140]	230	9001 FORMAT(2x,i5, 3x, a15, 3x, a5, 6x, e11.3, 4x, 10a13)
	231	9002 FORMAT(2x,i5, 3x, a41, 3x, 10a13)
	232	9003 FORMAT(a, i5, a)
[4058]	233	!
[9169]	234	!
[4058]	235	! OPEN Lateral boundary conditions
[7646]	236	IF( ln_bdy .AND. nb_trcobc > 0 ) THEN
[6140]	237	ALLOCATE ( sf_trcobc(nb_trcobc), rf_trofac(nb_trcobc), nbmap_ptr(nb_trcobc), STAT=ierr1 )
[4058]	238	IF( ierr1 > 0 ) THEN
[7646]	239	CALL ctl_stop( 'trc_bc_ini: unable to allocate sf_trcobc structure' ) ; RETURN
[4058]	240	ENDIF
[9169]	241	!
[6140]	242	igrd = 1 ! Everything is at T-points here
[9169]	243	!
[4058]	244	DO jn = 1, ntrc
[6140]	245	DO ib = 1, nb_bdy
[9169]	246	!
[6140]	247	nblen = idx_bdy(ib)%nblen(igrd)
[9169]	248	!
	249	IF( ln_trc_obc(jn) ) THEN !* Initialise from external data *!
[6140]	250	jl = n_trc_indobc(jn)
	251	slf_i(jl) = sn_trcobc(jn)
	252	rf_trofac(jl) = rn_trofac(jn)
[9169]	253	ALLOCATE( sf_trcobc(jl)%fnow(nblen,1,jpk) , STAT=ierr2 )
	254	IF( sn_trcobc(jn)%ln_tint ) ALLOCATE( sf_trcobc(jl)%fdta(nblen,1,jpk,2) , STAT=ierr3 )
[6140]	255	IF( ierr2 + ierr3 > 0 ) THEN
[7646]	256	CALL ctl_stop( 'trc_bc_ini : unable to allocate passive tracer OBC data arrays' ) ; RETURN
[6140]	257	ENDIF
	258	trcdta_bdy(jn,ib)%trc => sf_trcobc(jl)%fnow(:,1,:)
	259	trcdta_bdy(jn,ib)%rn_fac = rf_trofac(jl)
	260	! create OBC mapping array
	261	nbmap_ptr(jl)%ptr => idx_bdy(ib)%nbmap(:,igrd)
	262	nbmap_ptr(jl)%ll_unstruc = ln_coords_file(igrd)
[9169]	263	!
	264	ELSE !* Initialise obc arrays from initial conditions *!
[6140]	265	ALLOCATE ( trcdta_bdy(jn,ib)%trc(nblen,jpk) )
	266	DO ibd = 1, nblen
	267	DO ik = 1, jpkm1
	268	ii = idx_bdy(ib)%nbi(ibd,igrd)
	269	ij = idx_bdy(ib)%nbj(ibd,igrd)
[10963]	270	trcdta_bdy(jn,ib)%trc(ibd,ik) = tr(ii,ij,ik,jn,Kmm) * tmask(ii,ij,ik)
[6140]	271	END DO
	272	END DO
	273	trcdta_bdy(jn,ib)%rn_fac = 1._wp
[4058]	274	ENDIF
[9169]	275	END DO
	276	END DO
	277	!
[7646]	278	CALL fld_fill( sf_trcobc, slf_i, cn_dir_obc, 'trc_bc_ini', 'Passive tracer OBC data', 'namtrc_bc' )
[4058]	279	ENDIF
[7646]	280
[4058]	281	! SURFACE Boundary conditions
	282	IF( nb_trcsbc > 0 ) THEN ! allocate only if the number of tracer to initialise is greater than zero
	283	ALLOCATE( sf_trcsbc(nb_trcsbc), rf_trsfac(nb_trcsbc), STAT=ierr1 )
	284	IF( ierr1 > 0 ) THEN
[7646]	285	CALL ctl_stop( 'trc_bc_ini: unable to allocate sf_trcsbc structure' ) ; RETURN
[4058]	286	ENDIF
	287	!
	288	DO jn = 1, ntrc
	289	IF( ln_trc_sbc(jn) ) THEN ! update passive tracers arrays with input data read from file
	290	jl = n_trc_indsbc(jn)
	291	slf_i(jl) = sn_trcsbc(jn)
	292	rf_trsfac(jl) = rn_trsfac(jn)
	293	ALLOCATE( sf_trcsbc(jl)%fnow(jpi,jpj,1) , STAT=ierr2 )
	294	IF( sn_trcsbc(jn)%ln_tint ) ALLOCATE( sf_trcsbc(jl)%fdta(jpi,jpj,1,2) , STAT=ierr3 )
	295	IF( ierr2 + ierr3 > 0 ) THEN
[7646]	296	CALL ctl_stop( 'trc_bc_ini : unable to allocate passive tracer SBC data arrays' ) ; RETURN
[4058]	297	ENDIF
	298	ENDIF
	299	!
[9169]	300	END DO
[4058]	301	! ! fill sf_trcsbc with slf_i and control print
[7646]	302	CALL fld_fill( sf_trcsbc, slf_i, cn_dir_sbc, 'trc_bc_ini', 'Passive tracer SBC data', 'namtrc_bc' )
[4058]	303	!
	304	ENDIF
	305	!
	306	! COSTAL Boundary conditions
	307	IF( nb_trccbc > 0 ) THEN ! allocate only if the number of tracer to initialise is greater than zero
	308	ALLOCATE( sf_trccbc(nb_trccbc), rf_trcfac(nb_trccbc), STAT=ierr1 )
	309	IF( ierr1 > 0 ) THEN
	310	CALL ctl_stop( 'trc_bc_ini: unable to allocate sf_trccbc structure' ) ; RETURN
	311	ENDIF
	312	!
	313	DO jn = 1, ntrc
	314	IF( ln_trc_cbc(jn) ) THEN ! update passive tracers arrays with input data read from file
	315	jl = n_trc_indcbc(jn)
	316	slf_i(jl) = sn_trccbc(jn)
	317	rf_trcfac(jl) = rn_trcfac(jn)
	318	ALLOCATE( sf_trccbc(jl)%fnow(jpi,jpj,1) , STAT=ierr2 )
	319	IF( sn_trccbc(jn)%ln_tint ) ALLOCATE( sf_trccbc(jl)%fdta(jpi,jpj,1,2) , STAT=ierr3 )
	320	IF( ierr2 + ierr3 > 0 ) THEN
	321	CALL ctl_stop( 'trc_bc_ini : unable to allocate passive tracer CBC data arrays' ) ; RETURN
	322	ENDIF
	323	ENDIF
	324	!
[9169]	325	END DO
[4058]	326	! ! fill sf_trccbc with slf_i and control print
[7646]	327	CALL fld_fill( sf_trccbc, slf_i, cn_dir_cbc, 'trc_bc_ini', 'Passive tracer CBC data', 'namtrc_bc' )
[4058]	328	!
	329	ENDIF
[6140]	330	!
[4058]	331	DEALLOCATE( slf_i ) ! deallocate local field structure
[6140]	332	!
[7646]	333	END SUBROUTINE trc_bc_ini
[4058]	334
	335
[10963]	336	SUBROUTINE trc_bc(kt, Kmm, Krhs, jit)
[4058]	337	!!----------------------------------------------------------------------
[7646]	338	!! * ROUTINE trc_bc *
[4058]	339	!!
[7646]	340	!! ** Purpose : Apply Boundary Conditions data to tracers
[4058]	341	!!
[7646]	342	!! ** Method : 1) Read BC inputs and update data structures using fldread
	343	!! 2) Apply Boundary Conditions to tracers
[4058]	344	!!----------------------------------------------------------------------
	345	USE fldread
[9124]	346	!!
[10963]	347	INTEGER, INTENT(in) :: kt ! ocean time-step index
	348	INTEGER, INTENT(in) :: Kmm, Krhs ! time level indices
	349	INTEGER, INTENT(in), OPTIONAL :: jit ! subcycle time-step index (for timesplitting option)
[7646]	350	!!
	351	INTEGER :: ji, jj, jk, jn, jl ! Loop index
	352	REAL(wp) :: zfact, zrnf
[4058]	353	!!---------------------------------------------------------------------
	354	!
[9124]	355	IF( ln_timing ) CALL timing_start('trc_bc')
[4058]	356
[6140]	357	IF( kt == nit000 .AND. lwp) THEN
	358	WRITE(numout,*)
[7646]	359	WRITE(numout,*) 'trc_bc : Surface boundary conditions for passive tracers.'
[9169]	360	WRITE(numout,*) '~~~~~~~ '
[4058]	361	ENDIF
	362
[7646]	363	! 1. Update Boundary conditions data
[9169]	364	IF( PRESENT(jit) ) THEN
	365	!
[6140]	366	! OPEN boundary conditions (use time_offset=+1 as they are applied at the end of the step)
	367	IF( nb_trcobc > 0 ) THEN
	368	if (lwp) write(numout,'(a,i5,a,i10)') ' reading OBC data for ', nb_trcobc ,' variable(s) at step ', kt
[9169]	369	CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcobc, map=nbmap_ptr, kit=jit, kt_offset=+1)
[6140]	370	ENDIF
[9169]	371	!
[6140]	372	! SURFACE boundary conditions
	373	IF( nb_trcsbc > 0 ) THEN
	374	if (lwp) write(numout,'(a,i5,a,i10)') ' reading SBC data for ', nb_trcsbc ,' variable(s) at step ', kt
[9169]	375	CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcsbc, kit=jit)
[6140]	376	ENDIF
[9169]	377	!
[6140]	378	! COASTAL boundary conditions
	379	IF( nb_trccbc > 0 ) THEN
	380	if (lwp) write(numout,'(a,i5,a,i10)') ' reading CBC data for ', nb_trccbc ,' variable(s) at step ', kt
[9169]	381	CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trccbc, kit=jit)
[6140]	382	ENDIF
[9169]	383	!
[6140]	384	ELSE
[9169]	385	!
[6140]	386	! OPEN boundary conditions (use time_offset=+1 as they are applied at the end of the step)
	387	IF( nb_trcobc > 0 ) THEN
	388	if (lwp) write(numout,'(a,i5,a,i10)') ' reading OBC data for ', nb_trcobc ,' variable(s) at step ', kt
[9169]	389	CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcobc, map=nbmap_ptr, kt_offset=+1)
[6140]	390	ENDIF
[9169]	391	!
[6140]	392	! SURFACE boundary conditions
	393	IF( nb_trcsbc > 0 ) THEN
	394	if (lwp) write(numout,'(a,i5,a,i10)') ' reading SBC data for ', nb_trcsbc ,' variable(s) at step ', kt
[9169]	395	CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcsbc )
[6140]	396	ENDIF
[9169]	397	!
[6140]	398	! COASTAL boundary conditions
	399	IF( nb_trccbc > 0 ) THEN
	400	if (lwp) write(numout,'(a,i5,a,i10)') ' reading CBC data for ', nb_trccbc ,' variable(s) at step ', kt
[9169]	401	CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trccbc )
[6140]	402	ENDIF
[9169]	403	!
[4058]	404	ENDIF
	405
[7646]	406	! 2. Apply Boundary conditions data
	407	!
	408	DO jn = 1 , jptra
	409	!
	410	! Remove river dilution for tracers with absent river load
[9169]	411	IF( ln_rnf_ctl .AND. .NOT.ln_trc_cbc(jn) ) THEN
[7646]	412	DO jj = 2, jpj
	413	DO ji = fs_2, fs_jpim1
	414	DO jk = 1, nk_rnf(ji,jj)
	415	zrnf = (rnf(ji,jj) + rnf_b(ji,jj)) * 0.5_wp * r1_rau0 / h_rnf(ji,jj)
[10963]	416	tr(ji,jj,jk,jn,Krhs) = tr(ji,jj,jk,jn,Krhs) + (tr(ji,jj,jk,jn,Kmm) * zrnf)
[9169]	417	END DO
	418	END DO
	419	END DO
[7646]	420	ENDIF
[9169]	421	!
[7646]	422	! OPEN boundary conditions: trcbdy is called in trcnxt !
[9169]	423	!
[7646]	424	! SURFACE boundary conditions
[9169]	425	IF( ln_trc_sbc(jn) ) THEN
[7646]	426	jl = n_trc_indsbc(jn)
	427	DO jj = 2, jpj
	428	DO ji = fs_2, fs_jpim1 ! vector opt.
[10963]	429	zfact = 1. / ( e3t(ji,jj,1,Kmm) * rn_bc_time )
	430	tr(ji,jj,1,jn,Krhs) = tr(ji,jj,1,jn,Krhs) + rf_trsfac(jl) * sf_trcsbc(jl)%fnow(ji,jj,1) * zfact
[7646]	431	END DO
	432	END DO
[9169]	433	ENDIF
	434	!
[7646]	435	! COASTAL boundary conditions
[9169]	436	IF( ln_rnf .AND. ln_trc_cbc(jn) ) THEN
[7646]	437	jl = n_trc_indcbc(jn)
	438	DO jj = 2, jpj
	439	DO ji = fs_2, fs_jpim1 ! vector opt.
	440	DO jk = 1, nk_rnf(ji,jj)
	441	zfact = rn_rfact / ( e1e2t(ji,jj) * h_rnf(ji,jj) * rn_bc_time )
[10963]	442	tr(ji,jj,jk,jn,Krhs) = tr(ji,jj,jk,jn,Krhs) + rf_trcfac(jl) * sf_trccbc(jl)%fnow(ji,jj,1) * zfact
[9169]	443	END DO
[7646]	444	END DO
	445	END DO
[9169]	446	ENDIF
[7646]	447	! ! ===========
	448	END DO ! tracer loop
	449	! ! ===========
[9124]	450	IF( ln_timing ) CALL timing_stop('trc_bc')
[4058]	451	!
[7646]	452	END SUBROUTINE trc_bc
[4058]	453
	454	#else
	455	!!----------------------------------------------------------------------
	456	!! Dummy module NO 3D passive tracer data
	457	!!----------------------------------------------------------------------
	458	CONTAINS
[10963]	459	SUBROUTINE trc_bc_ini( ntrc, Kmm ) ! Empty routine
	460	INTEGER, INTENT(IN) :: ntrc ! number of tracers
	461	INTEGER, INTENT(in) :: Kmm ! time level index
[7646]	462	WRITE(,) 'trc_bc_ini: You should not have seen this print! error?', kt
	463	END SUBROUTINE trc_bc_ini
[10963]	464	SUBROUTINE trc_bc( kt, Kmm, Krhs ) ! Empty routine
	465	INTEGER, INTENT(in) :: Kmm, Krhs ! time level indices
[7646]	466	WRITE(,) 'trc_bc: You should not have seen this print! error?', kt
	467	END SUBROUTINE trc_bc
[4058]	468	#endif
	469
	470	!!======================================================================
	471	END MODULE trcbc

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