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mom_v_coriolis.F
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mom_v_coriolis.F
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#include "MOM_FLUXFORM_OPTIONS.h"
CBOP
C !ROUTINE: MOM_V_CORIOLIS
C !INTERFACE: ==========================================================
SUBROUTINE MOM_V_CORIOLIS(
I bi,bj,k,uFld,
U vCoriolisTerm,
I myThid)
C !DESCRIPTION:
C Calculates the horizontal Coriolis term in the meridional equation:
C \begin{equation*}
C -\overline{f}^j \overline{u}^{ij}
C \end{equation*}
C !USES: ===============================================================
IMPLICIT NONE
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
#include "SURFACE.h"
C !INPUT PARAMETERS: ===================================================
C bi,bj :: tile indices
C k :: vertical level
C uFld :: zonal flow
C myThid :: thread number
INTEGER bi,bj,k
_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
INTEGER myThid
C !OUTPUT PARAMETERS: ==================================================
C vCoriolisTerm :: Coriolis term
_RL vCoriolisTerm(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
C !LOCAL VARIABLES: ====================================================
C i,j :: loop indices
INTEGER i,j
_RS one
PARAMETER( one = 1. _d 0 )
CEOP
IF ( selectCoriScheme.GE.2 ) THEN
C Energy conserving discretization
DO j=1-OLy+1,sNy+OLy
DO i=1-OLx,sNx+OLx-1
vCoriolisTerm(i,j) =
& -0.5*( _fCori(i, j ,bi,bj)
& *0.5*( uFld( i , j )+uFld(i+1, j ) )
& + _fCori(i,j-1,bi,bj)
& *0.5*( uFld( i ,j-1)+uFld(i+1,j-1) ) )
ENDDO
ENDDO
ELSE
C Original discretization
DO j=1-OLy+1,sNy+OLy
DO i=1-OLx,sNx+OLx-1
vCoriolisTerm(i,j) =
& -0.5*(_fCori(i, j ,bi,bj)+_fCori(i,j-1,bi,bj))
& *0.25*( uFld(i, j )+uFld(i+1, j )
& +uFld(i,j-1)+uFld(i+1,j-1)
& )
ENDDO
ENDDO
ENDIF
IF ( selectCoriScheme.EQ.1 .OR. selectCoriScheme.EQ.3 ) THEN
C Scale term so that only "wet" points are used
C Due to: Jamart and Ozer, 1986, JGR 91 (C9), 10,621-10,631
C "Numerical Boundary Layers and Spurious Residual Flows"
DO j=1-OLy+1,sNy+OLy
DO i=1-OLx,sNx+OLx-1
vCoriolisTerm(i,j) = vCoriolisTerm(i,j)
& *4. _d 0/MAX( one,
& maskW( i , j ,k,bi,bj)+maskW(i+1, j ,k,bi,bj)
& +maskW( i ,j-1,k,bi,bj)+maskW(i+1,j-1,k,bi,bj) )
ENDDO
ENDDO
ENDIF
RETURN
END