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mom_v_metric_nh.F
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mom_v_metric_nh.F
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C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_v_metric_nh.F,v 1.3 2007/03/12 23:54:26 jmc Exp $
C $Name: $
#include "MOM_COMMON_OPTIONS.h"
CBOP
C !ROUTINE: MOM_V_METRIC_NH
C !INTERFACE: ==========================================================
SUBROUTINE MOM_V_METRIC_NH(
I bi,bj,k,
I vFld,wFld,
O vMetricTerms,
I myThid )
C !DESCRIPTION:
C Calculates the zonal metric term due to non-hydrostaticity on the sphere:
C \begin{equation}
C -\frac{v}{a} \overline{w}^{jk}
C \end{equation}
C !USES: ===============================================================
IMPLICIT NONE
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "GRID.h"
C !INPUT PARAMETERS: ===================================================
C bi,bj :: tile indices
C k :: vertical level
C vFld :: merdional flow
C wFld :: vertical flow
C myThid :: thread number
INTEGER bi,bj,k
_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
_RL wFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy)
INTEGER myThid
C !OUTPUT PARAMETERS: ==================================================
C vMetricTerms :: metric term
_RL vMetricTerms(1-OLx:sNx+OLx,1-OLy:sNy+OLy)
C !LOCAL VARIABLES: ====================================================
C i,j :: loop indices
INTEGER i,j,kp1
_RL wVelBottomOverride
CEOP
kp1=min(k+1,Nr)
wVelBottomOverride=1.
IF (k.EQ.Nr) wVelBottomOverride=0.
DO j=1-Olx+1,sNy+Oly
DO i=1-Olx,sNx+Olx
vMetricTerms(i,j) = vFld(i,j)*recip_rSphere*recip_deepFacC(k)
& *0.25*( (wFld(i,j-1,kp1,bi,bj)+wFld(i,j,kp1,bi,bj))
& *rVel2wUnit(kp1)*wVelBottomOverride
& + (wFld(i,j-1, k ,bi,bj)+wFld(i,j, k ,bi,bj))
& *rVel2wUnit( k )
& )*gravitySign
ENDDO
ENDDO
RETURN
END