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bdydyn.F90
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MODULE bdydyn
!!======================================================================
!! *** MODULE bdydyn ***
!! Unstructured Open Boundary Cond. : Apply boundary conditions to velocities
!!======================================================================
!! History : 1.0 ! 2005-02 (J. Chanut, A. Sellar) Original code
!! - ! 2007-07 (D. Storkey) Move Flather implementation to separate routine.
!! 3.0 ! 2008-04 (NEMO team) add in the reference version
!! 3.2 ! 2008-04 (R. Benshila) consider velocity instead of transport
!! 3.3 ! 2010-09 (E.O'Dea) modifications for Shelf configurations
!! 3.3 ! 2010-09 (D.Storkey) add ice boundary conditions
!! 3.4 ! 2011 (D. Storkey) rewrite in preparation for OBC-BDY merge
!!----------------------------------------------------------------------
#if defined key_bdy
!!----------------------------------------------------------------------
!! 'key_bdy' : Unstructured Open Boundary Condition
!!----------------------------------------------------------------------
!! bdy_dyn : split velocities into barotropic and baroclinic parts
!! and call bdy_dyn2d and bdy_dyn3d to apply boundary
!! conditions
!!----------------------------------------------------------------------
USE wrk_nemo ! Memory Allocation
USE timing ! Timing
USE oce ! ocean dynamics and tracers
USE dom_oce ! ocean space and time domain
USE dynspg_oce
USE bdy_oce ! ocean open boundary conditions
USE bdydyn2d ! open boundary conditions for barotropic solution
USE bdydyn3d ! open boundary conditions for baroclinic velocities
USE lbclnk ! ocean lateral boundary conditions (or mpp link)
USE in_out_manager !
USE domvvl ! variable volume
IMPLICIT NONE
PRIVATE
PUBLIC bdy_dyn ! routine called in dynspg_flt (if lk_dynspg_flt) or
! dyn_nxt (if lk_dynspg_ts or lk_dynspg_exp)
# include "domzgr_substitute.h90"
!!----------------------------------------------------------------------
!! NEMO/OPA 3.3 , NEMO Consortium (2010)
!! $Id$
!! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE bdy_dyn( kt, dyn3d_only )
!!----------------------------------------------------------------------
!! *** SUBROUTINE bdy_dyn ***
!!
!! ** Purpose : - Wrapper routine for bdy_dyn2d and bdy_dyn3d.
!!
!!----------------------------------------------------------------------
!!
INTEGER, INTENT( in ) :: kt ! Main time step counter
LOGICAL, INTENT( in ), OPTIONAL :: dyn3d_only ! T => only update baroclinic velocities
!!
INTEGER :: jk,ii,ij,ib_bdy,ib,igrd ! Loop counter
LOGICAL :: ll_dyn2d, ll_dyn3d, ll_orlanski
!!
REAL(wp), POINTER, DIMENSION(:,:) :: pua2d, pva2d ! after barotropic velocities
IF( nn_timing == 1 ) CALL timing_start('bdy_dyn')
ll_dyn2d = .true.
ll_dyn3d = .true.
IF( PRESENT(dyn3d_only) ) THEN
IF( dyn3d_only ) ll_dyn2d = .false.
ENDIF
ll_orlanski = .false.
DO ib_bdy = 1, nb_bdy
IF ( cn_dyn2d(ib_bdy) == 'orlanski' .or. cn_dyn2d(ib_bdy) == 'orlanski_npo' &
& .or. cn_dyn3d(ib_bdy) == 'orlanski' .or. cn_dyn3d(ib_bdy) == 'orlanski_npo') ll_orlanski = .true.
ENDDO
!-------------------------------------------------------
! Set pointers
!-------------------------------------------------------
CALL wrk_alloc(jpi,jpj,pua2d,pva2d)
!-------------------------------------------------------
! Split velocities into barotropic and baroclinic parts
!-------------------------------------------------------
! "After" velocities:
pua2d(:,:) = 0.e0
pva2d(:,:) = 0.e0
DO jk = 1, jpkm1
pua2d(:,:) = pua2d(:,:) + fse3u_a(:,:,jk) * umask(:,:,jk) * ua(:,:,jk)
pva2d(:,:) = pva2d(:,:) + fse3v_a(:,:,jk) * vmask(:,:,jk) * va(:,:,jk)
END DO
pua2d(:,:) = pua2d(:,:) * hur_a(:,:)
pva2d(:,:) = pva2d(:,:) * hvr_a(:,:)
DO jk = 1 , jpkm1
ua(:,:,jk) = (ua(:,:,jk) - pua2d(:,:)) * umask(:,:,jk)
va(:,:,jk) = (va(:,:,jk) - pva2d(:,:)) * vmask(:,:,jk)
END DO
! "Before" velocities (required for Orlanski condition):
IF ( ll_orlanski ) THEN
DO jk = 1 , jpkm1
ub(:,:,jk) = (ub(:,:,jk) - ub_b(:,:)) * umask(:,:,jk)
vb(:,:,jk) = (vb(:,:,jk) - vb_b(:,:)) * vmask(:,:,jk)
END DO
END IF
!-------------------------------------------------------
! Apply boundary conditions to barotropic and baroclinic
! parts separately
!-------------------------------------------------------
IF( ll_dyn2d ) CALL bdy_dyn2d( kt, pua2d, pva2d, ub_b, vb_b, hur_a(:,:), hvr_a(:,:), ssha )
IF( ll_dyn3d ) CALL bdy_dyn3d( kt )
!-------------------------------------------------------
! Recombine velocities
!-------------------------------------------------------
DO jk = 1 , jpkm1
ua(:,:,jk) = ( ua(:,:,jk) + pua2d(:,:) ) * umask(:,:,jk)
va(:,:,jk) = ( va(:,:,jk) + pva2d(:,:) ) * vmask(:,:,jk)
END DO
IF ( ll_orlanski ) THEN
DO jk = 1 , jpkm1
ub(:,:,jk) = ( ub(:,:,jk) + ub_b(:,:) ) * umask(:,:,jk)
vb(:,:,jk) = ( vb(:,:,jk) + vb_b(:,:) ) * vmask(:,:,jk)
END DO
END IF
CALL wrk_dealloc(jpi,jpj,pua2d,pva2d)
IF( nn_timing == 1 ) CALL timing_stop('bdy_dyn')
END SUBROUTINE bdy_dyn
#else
!!----------------------------------------------------------------------
!! Dummy module NO Unstruct Open Boundary Conditions
!!----------------------------------------------------------------------
CONTAINS
SUBROUTINE bdy_dyn( kt ) ! Empty routine
WRITE(*,*) 'bdy_dyn: You should not have seen this print! error?', kt
END SUBROUTINE bdy_dyn
#endif
!!======================================================================
END MODULE bdydyn