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C $Header$ |
C $Header$ |
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C $Name$ |
C $Name$ |
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_OPTIONS.h" |
#include "CPP_OPTIONS.h" |
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C /==========================================================\ |
CBOP |
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C | S/R TIMESTEP | |
C !ROUTINE: TIMESTEP |
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C | o Step model fields forward in time | |
C !INTERFACE: |
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C \==========================================================/ |
SUBROUTINE TIMESTEP( bi, bj, iMin, iMax, jMin, jMax, k, |
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SUBROUTINE TIMESTEP( bi, bj, iMin, iMax, jMin, jMax, K, |
I dPhiHydX,dPhiHydY, phiSurfX, phiSurfY, |
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I phiHyd, phiSurfX, phiSurfY, |
I guDissip, gvDissip, |
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I myIter, myThid ) |
I myTime, myIter, myThid ) |
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IMPLICIT NONE |
C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R TIMESTEP |
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C | o Step model fields forward in time |
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C *==========================================================* |
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C \ev |
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C !USES: |
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IMPLICIT NONE |
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C == Global variables == |
C == Global variables == |
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#include "SIZE.h" |
#include "SIZE.h" |
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#include "DYNVARS.h" |
#include "DYNVARS.h" |
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#include "EEPARAMS.h" |
#include "EEPARAMS.h" |
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#include "PARAMS.h" |
#include "PARAMS.h" |
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#include "GRID.h" |
#include "GRID.h" |
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#include "SURFACE.h" |
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine Arguments == |
C == Routine Arguments == |
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C phiHyd - Hydrostatic Potential (ocean: pressure/rho) |
C dPhiHydX,Y :: Gradient (X & Y directions) of Hydrostatic Potential |
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C (atmos: geopotentiel) |
C phiSurfX :: gradient of Surface potential (Pressure/rho, ocean) |
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C phiSurfX, - gradient of Surface potentiel (Pressure/rho, ocean) |
C phiSurfY :: or geopotential (atmos) in X and Y direction |
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C phiSurfY or geopotentiel (atmos) in X and Y direction |
C guDissip :: dissipation tendency (all explicit terms), u component |
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C gvDissip :: dissipation tendency (all explicit terms), v component |
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INTEGER bi,bj,iMin,iMax,jMin,jMax |
INTEGER bi,bj,iMin,iMax,jMin,jMax |
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INTEGER K |
INTEGER k |
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_RL phiHyd(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
_RL dPhiHydX(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL dPhiHydY(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL phiSurfX(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL phiSurfX(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
44 |
_RL phiSurfY(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL phiSurfY(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL guDissip(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL gvDissip(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL myTime |
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INTEGER myIter, myThid |
INTEGER myIter, myThid |
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C !LOCAL VARIABLES: |
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C == Local variables == |
C == Local variables == |
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LOGICAL momForcing_In_AB |
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LOGICAL momDissip_In_AB |
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INTEGER i,j |
INTEGER i,j |
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_RL ab15,ab05 |
_RL ab15,ab05 |
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_RL phxFac,phyFac, psFac |
_RL phxFac,phyFac, psFac |
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_RL gUtmp(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL gVtmp(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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C Allow diagnosis of external forcing |
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_RL gUext(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL gVext(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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#ifdef ALLOW_CD_CODE |
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_RL guCor(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL gvCor(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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#endif |
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CEOP |
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C Adams-Bashforth timestepping weights |
C Adams-Bashforth timestepping weights |
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IF (myIter .EQ. 0) THEN |
IF (myIter .EQ. 0) THEN |
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ab05=-0.5-abeps |
ab05=-0.5-abeps |
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ENDIF |
ENDIF |
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C Step forward zonal velocity (store in Gu) |
C-- explicit part of the surface potential gradient is added in this S/R |
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psFac = pfFacMom*(1. _d 0 - implicSurfPress) |
psFac = pfFacMom*(1. _d 0 - implicSurfPress) |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
C-- factors for gradient (X & Y directions) of Hydrostatic Potential |
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gUNm1(i,j,k,bi,bj)=uVel(i,j,k,bi,bj) + deltaTmom * ( |
phxFac = pfFacMom |
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& ab15*gU(i,j,k,bi,bj)+ab05*gUNm1(i,j,k,bi,bj) |
phyFac = pfFacMom |
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& - psFac*phiSurfX(i,j) |
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#ifdef INCLUDE_CD_CODE |
C-- including or excluding momentum forcing from Adams-Bashforth: |
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& + guCD(i,j,k,bi,bj) |
momForcing_In_AB = forcing_In_AB |
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momForcing_In_AB = .TRUE. |
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momDissip_In_AB = .TRUE. |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C- Initialize local arrays (not really necessary but safer) |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
94 |
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gUtmp(i,j) = 0. _d 0 |
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gVtmp(i,j) = 0. _d 0 |
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gUext(i,j) = 0. _d 0 |
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gVext(i,j) = 0. _d 0 |
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#ifdef ALLOW_CD_CODE |
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guCor(i,j) = 0. _d 0 |
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gvCor(i,j) = 0. _d 0 |
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#endif |
#endif |
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& )*_maskW(i,j,k,bi,bj) |
ENDDO |
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ENDDO |
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103 |
ENDDO |
ENDDO |
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IF (staggerTimeStep) THEN |
IF ( .NOT.staggerTimeStep ) THEN |
106 |
C-- -grad Phi_Hyd has not been incorporated to gU and is added here: |
C-- Synchronous time step: add grad Phi_Hyp to gU,gV before doing Adams-Bashforth |
107 |
phxFac = pfFacMom*deltaTmom |
DO j=jMin,jMax |
108 |
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DO i=iMin,iMax |
109 |
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gU(i,j,k,bi,bj) = gU(i,j,k,bi,bj) - phxFac*dPhiHydX(i,j) |
110 |
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gV(i,j,k,bi,bj) = gV(i,j,k,bi,bj) - phyFac*dPhiHydY(i,j) |
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ENDDO |
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ENDDO |
113 |
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phxFac = 0. |
114 |
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phyFac = 0. |
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c ELSE |
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C-- Stagger time step: grad Phi_Hyp will be added later |
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ENDIF |
118 |
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119 |
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C-- Dissipation term inside the Adams-Bashforth: |
120 |
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IF ( momViscosity .AND. momDissip_In_AB) THEN |
121 |
DO j=jMin,jMax |
DO j=jMin,jMax |
122 |
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DO i=iMin,iMax |
123 |
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gU(i,j,k,bi,bj) = gU(i,j,k,bi,bj) + guDissip(i,j) |
124 |
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gV(i,j,k,bi,bj) = gV(i,j,k,bi,bj) + gvDissip(i,j) |
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ENDDO |
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ENDDO |
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ENDIF |
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C-- Forcing term inside the Adams-Bashforth: |
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IF (momForcing .AND. momForcing_In_AB) THEN |
131 |
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#ifdef ALLOW_DIAGNOSTICS |
132 |
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IF ( useDiagnostics ) THEN |
133 |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
135 |
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gUext(i,j) = gU(i,j,k,bi,bj) |
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gVext(i,j) = gV(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_DIAGNOSTICS */ |
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142 |
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CALL EXTERNAL_FORCING_U( |
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I iMin,iMax,jMin,jMax,bi,bj,k, |
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I myTime,myThid) |
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CALL EXTERNAL_FORCING_V( |
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I iMin,iMax,jMin,jMax,bi,bj,k, |
147 |
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I myTime,myThid) |
148 |
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149 |
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#ifdef ALLOW_DIAGNOSTICS |
150 |
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IF ( useDiagnostics ) THEN |
151 |
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DO j=jMin,jMax |
152 |
DO i=iMin,iMax |
DO i=iMin,iMax |
153 |
gUNm1(i,j,k,bi,bj)=gUNm1(i,j,k,bi,bj) |
gUext(i,j) = gU(i,j,k,bi,bj)-gUext(i,j) |
154 |
& - _recip_dxC(i,j,bi,bj) |
gVext(i,j) = gV(i,j,k,bi,bj)-gVext(i,j) |
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& *(phiHyd(i,j,k)-phiHyd(i-1,j,k))*phxFac |
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& *_maskW(i,j,k,bi,bj) |
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155 |
ENDDO |
ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_DIAGNOSTICS */ |
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ENDIF |
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IF (useCDscheme) THEN |
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C- for CD-scheme, store gU,Vtmp = gU,V^n + forcing |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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gUtmp(i,j) = gU(i,j,k,bi,bj) |
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gVtmp(i,j) = gV(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
ENDDO |
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ENDIF |
ENDIF |
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C- Compute effective gU,gV_[n+1/2] terms (including Adams-Bashforth weights) |
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C and save gU,gV_[n] into guNm1,gvNm1 for the next time step. |
173 |
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#ifdef ALLOW_ADAMSBASHFORTH_3 |
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CALL ADAMS_BASHFORTH3( |
175 |
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I bi, bj, k, |
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U gU, guNm, |
177 |
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I myIter, myThid ) |
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CALL ADAMS_BASHFORTH3( |
179 |
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I bi, bj, k, |
180 |
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U gV, gvNm, |
181 |
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I myIter, myThid ) |
182 |
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#else /* ALLOW_ADAMSBASHFORTH_3 */ |
183 |
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CALL ADAMS_BASHFORTH2( |
184 |
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I bi, bj, k, |
185 |
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U gU, guNm1, |
186 |
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I myIter, myThid ) |
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CALL ADAMS_BASHFORTH2( |
188 |
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I bi, bj, k, |
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U gV, gvNm1, |
190 |
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I myIter, myThid ) |
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#endif /* ALLOW_ADAMSBASHFORTH_3 */ |
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C-- Forcing term outside the Adams-Bashforth: |
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C (not recommended with CD-scheme ON) |
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IF (momForcing .AND. .NOT.momForcing_In_AB) THEN |
196 |
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IF (useCDscheme) THEN |
197 |
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DO j=jMin,jMax |
198 |
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DO i=iMin,iMax |
199 |
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gUtmp(i,j) = gUtmp(i,j) - gU(i,j,k,bi,bj) |
200 |
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gVtmp(i,j) = gVtmp(i,j) - gV(i,j,k,bi,bj) |
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ENDDO |
202 |
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ENDDO |
203 |
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ENDIF |
204 |
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#ifdef ALLOW_DIAGNOSTICS |
205 |
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IF ( useDiagnostics ) THEN |
206 |
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DO j=jMin,jMax |
207 |
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DO i=iMin,iMax |
208 |
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gUext(i,j) = gU(i,j,k,bi,bj) |
209 |
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gVext(i,j) = gV(i,j,k,bi,bj) |
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ENDDO |
211 |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_DIAGNOSTICS */ |
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CALL EXTERNAL_FORCING_U( |
216 |
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I iMin,iMax,jMin,jMax,bi,bj,k, |
217 |
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I myTime,myThid) |
218 |
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CALL EXTERNAL_FORCING_V( |
219 |
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I iMin,iMax,jMin,jMax,bi,bj,k, |
220 |
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I myTime,myThid) |
221 |
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222 |
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#ifdef ALLOW_DIAGNOSTICS |
223 |
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IF ( useDiagnostics ) THEN |
224 |
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DO j=jMin,jMax |
225 |
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DO i=iMin,iMax |
226 |
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gUext(i,j) = gU(i,j,k,bi,bj)-gUext(i,j) |
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gVext(i,j) = gV(i,j,k,bi,bj)-gVext(i,j) |
228 |
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ENDDO |
229 |
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ENDDO |
230 |
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ENDIF |
231 |
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#endif /* ALLOW_DIAGNOSTICS */ |
232 |
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233 |
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#ifdef ALLOW_DIAGNOSTICS |
234 |
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IF ( useDiagnostics ) THEN |
235 |
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CALL DIAGNOSTICS_FILL(gUext,'Um_Ext ',k,1,2,bi,bj,myThid) |
236 |
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CALL DIAGNOSTICS_FILL(gVext,'Vm_Ext ',k,1,2,bi,bj,myThid) |
237 |
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ENDIF |
238 |
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#endif /* ALLOW_DIAGNOSTICS */ |
239 |
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240 |
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C- for CD-scheme, compute gU,Vtmp = gU,V^n + forcing |
241 |
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IF (useCDscheme) THEN |
242 |
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DO j=jMin,jMax |
243 |
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DO i=iMin,iMax |
244 |
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gUtmp(i,j) = gUtmp(i,j) + gU(i,j,k,bi,bj) |
245 |
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gVtmp(i,j) = gVtmp(i,j) + gV(i,j,k,bi,bj) |
246 |
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ENDDO |
247 |
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ENDDO |
248 |
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ENDIF |
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ENDIF |
250 |
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#ifdef ALLOW_CD_CODE |
252 |
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IF (useCDscheme) THEN |
253 |
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C- Step forward D-grid velocity using C-grid gU,Vtmp = gU,V^n + forcing |
254 |
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C and return coriolis terms on C-grid (guCor,gvCor) |
255 |
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CALL CD_CODE_SCHEME( |
256 |
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I bi,bj,k, dPhiHydX,dPhiHydY, gUtmp,gVtmp, |
257 |
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O guCor,gvCor, |
258 |
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I myTime, myIter, myThid) |
259 |
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DO j=jMin,jMax |
260 |
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DO i=iMin,iMax |
261 |
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gUtmp(i,j) = gU(i,j,k,bi,bj) |
262 |
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& + guCor(i,j) |
263 |
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gVtmp(i,j) = gV(i,j,k,bi,bj) |
264 |
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& + gvCor(i,j) |
265 |
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ENDDO |
266 |
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ENDDO |
267 |
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ELSE |
268 |
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#endif /* ALLOW_CD_CODE */ |
269 |
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DO j=jMin,jMax |
270 |
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DO i=iMin,iMax |
271 |
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gUtmp(i,j) = gU(i,j,k,bi,bj) |
272 |
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gVtmp(i,j) = gV(i,j,k,bi,bj) |
273 |
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ENDDO |
274 |
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ENDDO |
275 |
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#ifdef ALLOW_CD_CODE |
276 |
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ENDIF |
277 |
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#endif |
278 |
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279 |
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#ifdef NONLIN_FRSURF |
280 |
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IF (.NOT. vectorInvariantMomentum |
281 |
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& .AND. nonlinFreeSurf.GT.1) THEN |
282 |
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IF (select_rStar.GT.0) THEN |
283 |
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DO j=jMin,jMax |
284 |
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DO i=iMin,iMax |
285 |
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gUtmp(i,j) = gUtmp(i,j)/rStarExpW(i,j,bi,bj) |
286 |
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gVtmp(i,j) = gVtmp(i,j)/rStarExpS(i,j,bi,bj) |
287 |
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ENDDO |
288 |
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ENDDO |
289 |
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ELSE |
290 |
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DO j=jMin,jMax |
291 |
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DO i=iMin,iMax |
292 |
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IF ( k.EQ.ksurfW(i,j,bi,bj) ) THEN |
293 |
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gUtmp(i,j) = gUtmp(i,j) |
294 |
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& *hFacW(i,j,k,bi,bj)/hFac_surfW(i,j,bi,bj) |
295 |
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ENDIF |
296 |
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IF ( k.EQ.ksurfS(i,j,bi,bj) ) THEN |
297 |
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gVtmp(i,j) = gVtmp(i,j) |
298 |
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& *hFacS(i,j,k,bi,bj)/hFac_surfS(i,j,bi,bj) |
299 |
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ENDIF |
300 |
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ENDDO |
301 |
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ENDDO |
302 |
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ENDIF |
303 |
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ENDIF |
304 |
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#endif /* NONLIN_FRSURF */ |
305 |
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306 |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
307 |
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308 |
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C-- Dissipation term outside the Adams-Bashforth: |
309 |
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IF ( momViscosity .AND. .NOT.momDissip_In_AB ) THEN |
310 |
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DO j=jMin,jMax |
311 |
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DO i=iMin,iMax |
312 |
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gUtmp(i,j) = gUtmp(i,j) + guDissip(i,j) |
313 |
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gVtmp(i,j) = gVtmp(i,j) + gvDissip(i,j) |
314 |
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ENDDO |
315 |
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ENDDO |
316 |
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ENDIF |
317 |
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318 |
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C Step forward zonal velocity (store in Gu) |
319 |
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DO j=jMin,jMax |
320 |
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DO i=iMin,iMax |
321 |
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gU(i,j,k,bi,bj) = uVel(i,j,k,bi,bj) |
322 |
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& +deltaTmom*( |
323 |
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& gUtmp(i,j) |
324 |
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& - psFac*phiSurfX(i,j) |
325 |
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& - phxFac*dPhiHydX(i,j) |
326 |
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& )*_maskW(i,j,k,bi,bj) |
327 |
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ENDDO |
328 |
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ENDDO |
329 |
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330 |
C Step forward meridional velocity (store in Gv) |
C Step forward meridional velocity (store in Gv) |
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psFac = pfFacMom*(1. _d 0 - implicSurfPress) |
|
331 |
DO j=jMin,jMax |
DO j=jMin,jMax |
332 |
DO i=iMin,iMax |
DO i=iMin,iMax |
333 |
gVNm1(i,j,k,bi,bj)=vVel(i,j,k,bi,bj) + deltaTmom * ( |
gV(i,j,k,bi,bj) = vVel(i,j,k,bi,bj) |
334 |
& ab15*gV(i,j,k,bi,bj)+ab05*gVNm1(i,j,k,bi,bj) |
& +deltaTmom*( |
335 |
& - psFac*phiSurfY(i,j) |
& gVtmp(i,j) |
336 |
#ifdef INCLUDE_CD_CODE |
& - psFac*phiSurfY(i,j) |
337 |
& + gvCD(i,j,k,bi,bj) |
& - phyFac*dPhiHydY(i,j) |
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#endif |
|
338 |
& )*_maskS(i,j,k,bi,bj) |
& )*_maskS(i,j,k,bi,bj) |
339 |
ENDDO |
ENDDO |
340 |
ENDDO |
ENDDO |
341 |
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342 |
IF (staggerTimeStep) THEN |
#ifdef ALLOW_DIAGNOSTICS |
343 |
C-- -grad Phi_Hyd has not been incorporated to gV and is added here: |
#ifdef ALLOW_CD_CODE |
344 |
phyFac = pfFacMom*deltaTmom |
IF ( useCDscheme .AND. useDiagnostics ) THEN |
345 |
DO j=jMin,jMax |
CALL DIAGNOSTICS_FILL(guCor,'Um_Cori ',k,1,2,bi,bj,myThid) |
346 |
DO i=iMin,iMax |
CALL DIAGNOSTICS_FILL(gvCor,'Vm_Cori ',k,1,2,bi,bj,myThid) |
|
gVNm1(i,j,k,bi,bj)=gVNm1(i,j,k,bi,bj) |
|
|
& - _recip_dyC(i,j,bi,bj) |
|
|
& *(phiHyd(i,j,k)-phiHyd(i,j-1,k))*phyFac |
|
|
& *_maskS(i,j,k,bi,bj) |
|
|
ENDDO |
|
|
ENDDO |
|
347 |
ENDIF |
ENDIF |
348 |
|
#endif /* ALLOW_CD_CODE */ |
349 |
|
#endif /* ALLOW_DIAGNOSTICS */ |
350 |
|
|
351 |
RETURN |
RETURN |
352 |
END |
END |