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trcbc.F90 23.65 KiB
MODULE trcbc
!!======================================================================
!! *** MODULE trcbc ***
!! TOP : module for passive tracer boundary conditions
!!=====================================================================
!! History : 3.5 ! 2014 (M. Vichi, T. Lovato) Original
!! 3.6 ! 2015 (T . Lovato) Revision and BDY support
!! 4.0 ! 2016 (T . Lovato) Include application of sbc and cbc
!!----------------------------------------------------------------------
!! trc_bc : Apply tracer Boundary Conditions
!!----------------------------------------------------------------------
USE par_trc ! passive tracers parameters
USE oce_trc ! shared variables between ocean and passive tracers
USE trc ! passive tracers common variables
USE iom ! I/O manager
USE lib_mpp ! MPP library
USE fldread ! read input fields
USE bdy_oce, ONLY: ln_bdy, nb_bdy , idx_bdy, ln_coords_file, rn_time_dmp, rn_time_dmp_out
IMPLICIT NONE
PRIVATE
PUBLIC trc_bc ! called in trcstp.F90 or within TOP modules
PUBLIC trc_bc_ini ! called in trcini.F90
INTEGER , SAVE, PUBLIC :: nb_trcobc ! number of tracers with open BC
INTEGER , SAVE, PUBLIC :: nb_trcsbc ! number of tracers with surface BC
INTEGER , SAVE, PUBLIC :: nb_trccbc ! number of tracers with coastal BC
INTEGER , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: n_trc_indobc ! index of tracer with OBC data
INTEGER , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: n_trc_indsbc ! index of tracer with SBC data
INTEGER , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: n_trc_indcbc ! index of tracer with CBC data
REAL(wp) , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: rf_trsfac ! multiplicative factor for SBC tracer values
TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_trcsbc ! structure of data input SBC (file informations, fields read)
REAL(wp) , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: rf_trcfac ! multiplicative factor for CBC tracer values
TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_trccbc ! structure of data input CBC (file informations, fields read)
REAL(wp) , SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: rf_trofac ! multiplicative factor for OBCtracer values
#if defined key_agrif
TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:) :: sf_trcobc ! structure of data input OBC (file informations, fields read)
#else
TYPE(FLD), SAVE, PUBLIC, ALLOCATABLE, DIMENSION(:), TARGET :: sf_trcobc
#endif
#if defined key_top
!!----------------------------------------------------------------------
!! 'key_top' TOP model
!!----------------------------------------------------------------------
!! * Substitutions
# include "do_loop_substitute.h90"
# include "domzgr_substitute.h90"
!!----------------------------------------------------------------------
!! NEMO/TOP 4.0 , NEMO Consortium (2018)
!! $Id: trcbc.F90 15446 2021-10-26 14:34:38Z cetlod $
!! Software governed by the CeCILL license (see ./LICENSE)
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE trc_bc_ini( ntrc, Kmm )
!!----------------------------------------------------------------------
!! *** ROUTINE trc_bc_ini ***
!!
!! ** Purpose : initialisation of passive tracer BC data
!!
!! ** Method : - Read namtsd namelist
!! - allocates passive tracer BC data structure
!!----------------------------------------------------------------------
INTEGER, INTENT(in) :: ntrc ! number of tracers
INTEGER, INTENT(in) :: Kmm ! time level index
!
INTEGER :: jl, jn , ib, ibd, ii, ij, ik ! dummy loop indices INTEGER :: ierr0, ierr1, ierr2, ierr3 ! temporary integers
INTEGER :: ios ! Local integer output status for namelist read
INTEGER :: nblen, igrd ! support arrays for BDY
CHARACTER(len=100) :: clndta, clntrc
!
CHARACTER(len=100) :: cn_dir_sbc, cn_dir_cbc, cn_dir_obc
TYPE(FLD_N), ALLOCATABLE, DIMENSION(:) :: slf_i ! local array of namelist informations on the fields to read
TYPE(FLD_N), DIMENSION(jpmaxtrc) :: sn_trcobc ! open
TYPE(FLD_N), DIMENSION(jpmaxtrc) :: sn_trcsbc ! surface
TYPE(FLD_N), DIMENSION(jpmaxtrc) :: sn_trccbc ! coastal
REAL(wp) , DIMENSION(jpmaxtrc) :: rn_trofac ! multiplicative factor for tracer values
REAL(wp) , DIMENSION(jpmaxtrc) :: rn_trsfac ! multiplicative factor for tracer values
REAL(wp) , DIMENSION(jpmaxtrc) :: rn_trcfac ! multiplicative factor for tracer values
!!
NAMELIST/namtrc_bc/ cn_dir_obc, sn_trcobc, rn_trofac, cn_dir_sbc, sn_trcsbc, rn_trsfac, &
& cn_dir_cbc, sn_trccbc, rn_trcfac, ln_rnf_ctl, rn_sbc_time, rn_cbc_time
NAMELIST/namtrc_bdy/ cn_trc_dflt, cn_trc, nn_trcdmp_bdy
!!----------------------------------------------------------------------
!
IF( lwp ) THEN
WRITE(numout,*)
WRITE(numout,*) 'trc_bc_ini : Tracers Boundary Conditions (BC)'
WRITE(numout,*) '~~~~~~~~~~~ '
ENDIF
! Initialisation and local array allocation
ierr0 = 0 ; ierr1 = 0 ; ierr2 = 0 ; ierr3 = 0
ALLOCATE( slf_i(ntrc), STAT=ierr0 )
IF( ierr0 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini: unable to allocate local slf_i' ) ; RETURN
ENDIF
! Compute the number of tracers to be initialised with open, surface and boundary data
ALLOCATE( n_trc_indobc(ntrc), STAT=ierr0 )
IF( ierr0 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini: unable to allocate n_trc_indobc' ) ; RETURN
ENDIF
nb_trcobc = 0
n_trc_indobc(:) = 0
!
ALLOCATE( n_trc_indsbc(ntrc), STAT=ierr0 )
IF( ierr0 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini: unable to allocate n_trc_indsbc' ) ; RETURN
ENDIF
nb_trcsbc = 0
n_trc_indsbc(:) = 0
!
ALLOCATE( n_trc_indcbc(ntrc), STAT=ierr0 )
IF( ierr0 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini: unable to allocate n_trc_indcbc' ) ; RETURN
ENDIF
nb_trccbc = 0
n_trc_indcbc(:) = 0
!
! Read Boundary Conditions Namelists
READ ( numnat_ref, namtrc_bc, IOSTAT = ios, ERR = 901)
901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_bc in reference namelist' )
READ ( numnat_cfg, namtrc_bc, IOSTAT = ios, ERR = 902 )
902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtrc_bc in configuration namelist' )
IF(lwm) WRITE ( numont, namtrc_bc )
IF ( ln_bdy ) THEN
READ ( numnat_ref, namtrc_bdy, IOSTAT = ios, ERR = 903)
903 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namtrc_bdy in reference namelist' )
! make sur that all elements of the namelist variables have a default definition from namelist_ref
cn_trc (2:jp_bdy) = cn_trc (1)
cn_trc_dflt(2:jp_bdy) = cn_trc_dflt(1)
READ ( numnat_cfg, namtrc_bdy, IOSTAT = ios, ERR = 904 )
904 IF( ios > 0 ) CALL ctl_nam ( ios , 'namtrc_bdy in configuration namelist' )
IF(lwm) WRITE ( numont, namtrc_bdy )
! setup up preliminary informations for BDY structure
DO jn = 1, ntrc
DO ib = 1, nb_bdy
! Set type of obc in BDY data structure (around here we may plug user override of obc type from nml)
IF ( ln_trc_obc(jn) ) THEN ; trcdta_bdy(jn,ib)%cn_obc = TRIM( cn_trc (ib) )
ELSE ; trcdta_bdy(jn,ib)%cn_obc = TRIM( cn_trc_dflt(ib) )
ENDIF
! set damping use in BDY data structure
trcdta_bdy(jn,ib)%dmp = .false.
IF(nn_trcdmp_bdy(ib) == 1 .AND. ln_trc_obc(jn) ) trcdta_bdy(jn,ib)%dmp = .true.
IF(nn_trcdmp_bdy(ib) == 2 ) trcdta_bdy(jn,ib)%dmp = .true.
IF(trcdta_bdy(jn,ib)%cn_obc == 'frs' .AND. nn_trcdmp_bdy(ib) /= 0 ) &
& CALL ctl_stop( 'trc_bc_ini: Use FRS OR relaxation' )
IF( .NOT.( 0 <= nn_trcdmp_bdy(ib) .AND. nn_trcdmp_bdy(ib) <= 2 ) ) &
& CALL ctl_stop( 'trc_bc_ini: Not a valid option for nn_trcdmp_bdy. Allowed: 0,1,2.' )
END DO
END DO
ELSE
! Force all tracers OBC to false if bdy not used
ln_trc_obc = .false.
ENDIF
! compose BC data indexes
DO jn = 1, ntrc
IF( ln_trc_obc(jn) ) THEN
nb_trcobc = nb_trcobc + 1 ; n_trc_indobc(jn) = nb_trcobc
ENDIF
IF( ln_trc_sbc(jn) ) THEN
nb_trcsbc = nb_trcsbc + 1 ; n_trc_indsbc(jn) = nb_trcsbc
ENDIF
IF( ln_trc_cbc(jn) ) THEN
nb_trccbc = nb_trccbc + 1 ; n_trc_indcbc(jn) = nb_trccbc
ENDIF
END DO
! Print summmary of Boundary Conditions
IF( lwp ) THEN
WRITE(numout,*)
WRITE(numout,'(a,i3)') ' Total tracers to be initialized with SURFACE BCs data:', nb_trcsbc
IF ( nb_trcsbc > 0 ) THEN
WRITE(numout,*) ' #trc NAME Boundary Mult.Fact. '
DO jn = 1, ntrc
IF ( ln_trc_sbc(jn) ) WRITE(numout,9001) jn, TRIM( sn_trcsbc(jn)%clvar ), 'SBC', rn_trsfac(jn)
END DO
ENDIF
WRITE(numout,'(2a)') ' SURFACE BC data repository : ', TRIM(cn_dir_sbc)
!
WRITE(numout,*)
WRITE(numout,'(a,i3)') ' Total tracers to be initialized with COASTAL BCs data:', nb_trccbc
IF( nb_trccbc > 0 ) THEN
WRITE(numout,*) ' #trc NAME Boundary Mult.Fact. '
DO jn = 1, ntrc
IF ( ln_trc_cbc(jn) ) WRITE(numout, 9001) jn, TRIM( sn_trccbc(jn)%clvar ), 'CBC', rn_trcfac(jn)
END DO
ENDIF
WRITE(numout,'(2a)') ' COASTAL BC data repository : ', TRIM(cn_dir_cbc)
IF( .NOT.ln_rnf .OR. .NOT.ln_linssh ) ln_rnf_ctl = .FALSE.
IF( ln_rnf_ctl ) WRITE(numout,'(a)') &
& ' -> Remove runoff dilution effect on tracers with absent river load (ln_rnf_ctl = .TRUE.)'
WRITE(numout,*)
WRITE(numout,'(a,i3)') ' Total tracers to be initialized with OPEN BCs data:', nb_trcobc
IF( ln_bdy .AND. nb_trcobc > 0 ) THEN
WRITE(numout,*) ' #trc NAME Boundary Mult.Fact. OBC Settings'
DO jn = 1, ntrc
IF ( ln_trc_obc(jn) ) WRITE(numout, 9001) jn, TRIM( sn_trcobc(jn)%clvar ), 'OBC', rn_trofac(jn), &
& (trcdta_bdy(jn,ib)%cn_obc,ib=1,nb_bdy)
IF ( .NOT. ln_trc_obc(jn) ) WRITE(numout, 9002) jn, 'Set data to IC and use default condition' , &
& (trcdta_bdy(jn,ib)%cn_obc,ib=1,nb_bdy)
END DO WRITE(numout,*) ' '
DO ib = 1, nb_bdy
IF(nn_trcdmp_bdy(ib) == 0) WRITE(numout,9003) ' Boundary ', ib, &
& ' -> NO damping of tracers'
IF(nn_trcdmp_bdy(ib) == 1) WRITE(numout,9003) ' Boundary ', ib, &
& ' -> damping ONLY for tracers with external data provided'
IF(nn_trcdmp_bdy(ib) == 2) WRITE(numout,9003) ' Boundary ', ib, &
& ' -> damping of ALL tracers'
IF(nn_trcdmp_bdy(ib) > 0) THEN
WRITE(numout,9003) ' USE damping parameters from nambdy for boundary ', ib,' : '
WRITE(numout,'(a,f10.2,a)') ' - Inflow damping time scale : ',rn_time_dmp (ib),' days'
WRITE(numout,'(a,f10.2,a)') ' - Outflow damping time scale : ',rn_time_dmp_out(ib),' days'
ENDIF
END DO
ENDIF
!
WRITE(numout,'(2a)') ' OPEN BC data repository : ', TRIM(cn_dir_obc)
ENDIF
9001 FORMAT(2x,i5, 3x, a15, 3x, a5, 6x, e11.3, 4x, 10a13)
9002 FORMAT(2x,i5, 3x, a41, 3x, 10a13)
9003 FORMAT(a, i5, a)
!
!
! OPEN Lateral boundary conditions
IF( ln_bdy .AND. nb_trcobc > 0 ) THEN
ALLOCATE ( sf_trcobc(nb_trcobc), rf_trofac(nb_trcobc), STAT=ierr1 )
IF( ierr1 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini: unable to allocate sf_trcobc structure' ) ; RETURN
ENDIF
!
igrd = 1 ! Everything is at T-points here
!
DO jn = 1, ntrc
DO ib = 1, nb_bdy
!
nblen = idx_bdy(ib)%nblen(igrd)
!
IF( ln_trc_obc(jn) ) THEN !* Initialise from external data *!
jl = n_trc_indobc(jn)
slf_i(jl) = sn_trcobc(jn)
rf_trofac(jl) = rn_trofac(jn)
ALLOCATE( sf_trcobc(jl)%fnow(nblen,1,jpk) , STAT=ierr2 )
IF( sn_trcobc(jn)%ln_tint ) ALLOCATE( sf_trcobc(jl)%fdta(nblen,1,jpk,2) , STAT=ierr3 )
IF( ierr2 + ierr3 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini : unable to allocate passive tracer OBC data arrays' ) ; RETURN
ENDIF
trcdta_bdy(jn,ib)%trc => sf_trcobc(jl)%fnow(:,1,:)
trcdta_bdy(jn,ib)%rn_fac = rf_trofac(jl)
ELSE !* Initialise obc arrays from initial conditions *!
ALLOCATE ( trcdta_bdy(jn,ib)%trc(nblen,jpk) )
DO ibd = 1, nblen
DO ik = 1, jpkm1
ii = idx_bdy(ib)%nbi(ibd,igrd)
ij = idx_bdy(ib)%nbj(ibd,igrd)
trcdta_bdy(jn,ib)%trc(ibd,ik) = tr(ii,ij,ik,jn,Kmm) * tmask(ii,ij,ik)
END DO
END DO
trcdta_bdy(jn,ib)%rn_fac = 1._wp
ENDIF
END DO
END DO
!
CALL fld_fill( sf_trcobc, slf_i, cn_dir_obc, 'trc_bc_ini', 'Passive tracer OBC data', 'namtrc_bc' )
DO jn = 1, ntrc ! define imap pointer, must be done after the call to fld_fill
DO ib = 1, nb_bdy
IF( ln_trc_obc(jn) ) THEN !* Initialise from external data *!
jl = n_trc_indobc(jn)
sf_trcobc(jl)%imap => idx_bdy(ib)%nbmap(1:idx_bdy(ib)%nblen(igrd),igrd)
ENDIF
END DO END DO
!
ENDIF
! SURFACE Boundary conditions
IF( nb_trcsbc > 0 ) THEN ! allocate only if the number of tracer to initialise is greater than zero
ALLOCATE( sf_trcsbc(nb_trcsbc), rf_trsfac(nb_trcsbc), STAT=ierr1 )
IF( ierr1 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini: unable to allocate sf_trcsbc structure' ) ; RETURN
ENDIF
!
DO jn = 1, ntrc
IF( ln_trc_sbc(jn) ) THEN ! update passive tracers arrays with input data read from file
jl = n_trc_indsbc(jn)
slf_i(jl) = sn_trcsbc(jn)
rf_trsfac(jl) = rn_trsfac(jn)
ALLOCATE( sf_trcsbc(jl)%fnow(jpi,jpj,1) , STAT=ierr2 )
IF( sn_trcsbc(jn)%ln_tint ) ALLOCATE( sf_trcsbc(jl)%fdta(jpi,jpj,1,2) , STAT=ierr3 )
IF( ierr2 + ierr3 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini : unable to allocate passive tracer SBC data arrays' ) ; RETURN
ENDIF
ENDIF
!
END DO
! ! fill sf_trcsbc with slf_i and control print
CALL fld_fill( sf_trcsbc, slf_i, cn_dir_sbc, 'trc_bc_ini', 'Passive tracer SBC data', 'namtrc_bc' )
!
ENDIF
!
! COSTAL Boundary conditions
IF( nb_trccbc > 0 ) THEN ! allocate only if the number of tracer to initialise is greater than zero
ALLOCATE( sf_trccbc(nb_trccbc), rf_trcfac(nb_trccbc), STAT=ierr1 )
IF( ierr1 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini: unable to allocate sf_trccbc structure' ) ; RETURN
ENDIF
!
DO jn = 1, ntrc
IF( ln_trc_cbc(jn) ) THEN ! update passive tracers arrays with input data read from file
jl = n_trc_indcbc(jn)
slf_i(jl) = sn_trccbc(jn)
rf_trcfac(jl) = rn_trcfac(jn)
ALLOCATE( sf_trccbc(jl)%fnow(jpi,jpj,1) , STAT=ierr2 )
IF( sn_trccbc(jn)%ln_tint ) ALLOCATE( sf_trccbc(jl)%fdta(jpi,jpj,1,2) , STAT=ierr3 )
IF( ierr2 + ierr3 > 0 ) THEN
CALL ctl_stop( 'trc_bc_ini : unable to allocate passive tracer CBC data arrays' ) ; RETURN
ENDIF
ENDIF
!
END DO
! ! fill sf_trccbc with slf_i and control print
CALL fld_fill( sf_trccbc, slf_i, cn_dir_cbc, 'trc_bc_ini', 'Passive tracer CBC data', 'namtrc_bc' )
!
ENDIF
!
DEALLOCATE( slf_i ) ! deallocate local field structure
!
END SUBROUTINE trc_bc_ini
SUBROUTINE trc_bc(kt, Kmm, ptr, Krhs, jit)
!!----------------------------------------------------------------------
!! *** ROUTINE trc_bc ***
!!
!! ** Purpose : Apply Boundary Conditions data to tracers
!!
!! ** Method : 1) Read BC inputs and update data structures using fldread
!! 2) Apply Boundary Conditions to tracers
!!----------------------------------------------------------------------
USE fldread
!! INTEGER , INTENT(in) :: kt ! ocean time-step index
INTEGER , INTENT(in) :: Kmm, Krhs ! time level indices
INTEGER , INTENT(in), OPTIONAL :: jit ! subcycle time-step index (for timesplitting option)
REAL(wp), DIMENSION(jpi,jpj,jpk,jptra,jpt), INTENT(inout) :: ptr ! passive tracers and RHS of tracer equation
!!
INTEGER :: ji, jj, jk, jn, jl ! Loop index
REAL(wp) :: zfact, zrnf
!!---------------------------------------------------------------------
!
IF( ln_timing ) CALL timing_start('trc_bc')
IF( kt == nit000 .AND. lwp) THEN
WRITE(numout,*)
WRITE(numout,*) 'trc_bc : Surface boundary conditions for passive tracers.'
WRITE(numout,*) '~~~~~~~ '
ENDIF
! 1. Update Boundary conditions data
IF( PRESENT(jit) ) THEN
!
! BDY: use pt_offset=0.5 as applied at the end of the step and fldread is referenced at the middle of the step
IF( nb_trcobc > 0 ) THEN
if (lwp) write(numout,'(a,i5,a,i10)') ' reading OBC data for ', nb_trcobc ,' variable(s) at step ', kt
CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcobc, kit=jit, pt_offset = 0.5_wp )
ENDIF
!
! SURFACE boundary conditions
IF( nb_trcsbc > 0 ) THEN
if (lwp) write(numout,'(a,i5,a,i10)') ' reading SBC data for ', nb_trcsbc ,' variable(s) at step ', kt
CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcsbc, kit=jit)
ENDIF
!
! COASTAL boundary conditions
IF( nb_trccbc > 0 ) THEN
if (lwp) write(numout,'(a,i5,a,i10)') ' reading CBC data for ', nb_trccbc ,' variable(s) at step ', kt
CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trccbc, kit=jit)
ENDIF
!
ELSE
!
! BDY: use pt_offset=0.5 as applied at the end of the step and fldread is referenced at the middle of the step
IF( nb_trcobc > 0 ) THEN
if (lwp) write(numout,'(a,i5,a,i10)') ' reading OBC data for ', nb_trcobc ,' variable(s) at step ', kt
CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcobc, pt_offset = 0.5_wp )
ENDIF
!
! SURFACE boundary conditions
IF( nb_trcsbc > 0 ) THEN
if (lwp) write(numout,'(a,i5,a,i10)') ' reading SBC data for ', nb_trcsbc ,' variable(s) at step ', kt
CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trcsbc )
ENDIF
!
! COASTAL boundary conditions
IF( nb_trccbc > 0 ) THEN
if (lwp) write(numout,'(a,i5,a,i10)') ' reading CBC data for ', nb_trccbc ,' variable(s) at step ', kt
CALL fld_read( kt=kt, kn_fsbc=1, sd=sf_trccbc )
ENDIF
!
ENDIF
! 2. Apply Boundary conditions data
!
DO jn = 1 , jptra
!
! Remove river dilution for tracers with absent river load
IF( ln_rnf_ctl .AND. .NOT.ln_trc_cbc(jn) ) THEN
DO_2D( 0, 0, 0, 1 )
DO jk = 1, nk_rnf(ji,jj)
zrnf = (rnf(ji,jj) + rnf_b(ji,jj)) * 0.5_wp * r1_rho0 / h_rnf(ji,jj)
ptr(ji,jj,jk,jn,Krhs) = ptr(ji,jj,jk,jn,Krhs) + (ptr(ji,jj,jk,jn,Kmm) * zrnf) END DO
END_2D
ENDIF
!
! OPEN boundary conditions: trcbdy is called in trcnxt !
!
! SURFACE boundary conditions
IF( ln_trc_sbc(jn) ) THEN
jl = n_trc_indsbc(jn)
sf_trcsbc(jl)%fnow(:,:,1) = MAX( rtrn, sf_trcsbc(jl)%fnow(:,:,1) ) ! avoid nedgative value due to interpolation
DO_2D( 0, 0, 0, 1 )
zfact = 1. / ( e3t(ji,jj,1,Kmm) * rn_sbc_time )
ptr(ji,jj,1,jn,Krhs) = ptr(ji,jj,1,jn,Krhs) + rf_trsfac(jl) * sf_trcsbc(jl)%fnow(ji,jj,1) * zfact
END_2D
ENDIF
!
! COASTAL boundary conditions
IF( ( ln_rnf .OR. l_offline ) .AND. ln_trc_cbc(jn) ) THEN
IF( l_offline ) rn_rfact = 1._wp
jl = n_trc_indcbc(jn)
sf_trccbc(jl)%fnow(:,:,1) = MAX( rtrn, sf_trccbc(jl)%fnow(:,:,1) ) ! avoid nedgative value due to interpolation
DO_2D( 0, 0, 0, 1 )
DO jk = 1, nk_rnf(ji,jj)
zfact = rn_rfact / ( e1e2t(ji,jj) * h_rnf(ji,jj) * rn_cbc_time )
ptr(ji,jj,jk,jn,Krhs) = ptr(ji,jj,jk,jn,Krhs) + rf_trcfac(jl) * sf_trccbc(jl)%fnow(ji,jj,1) * zfact
END DO
END_2D
ENDIF
! ! ===========
END DO ! tracer loop
! ! ===========
IF( ln_timing ) CALL timing_stop('trc_bc')
!
END SUBROUTINE trc_bc
#else
!!----------------------------------------------------------------------
!! Dummy module NO 3D passive tracer data
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE trc_bc_ini( ntrc, Kmm ) ! Empty routine
INTEGER, INTENT(IN) :: ntrc ! number of tracers
INTEGER, INTENT(in) :: Kmm ! time level index
WRITE(*,*) 'trc_bc_ini: You should not have seen this print! error?', ntrc, Kmm
END SUBROUTINE trc_bc_ini
SUBROUTINE trc_bc( kt, Kmm, Krhs ) ! Empty routine
INTEGER, INTENT(in) :: kt, Kmm, Krhs ! time level indices
WRITE(*,*) 'trc_bc: You should not have seen this print! error?', kt, Kmm, Krhs
END SUBROUTINE trc_bc
#endif
!!======================================================================
END MODULE trcbc