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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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CBOP |
CBOP |
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C !ROUTINE: TIMESTEP |
C !ROUTINE: TIMESTEP |
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C !INTERFACE: |
C !INTERFACE: |
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SUBROUTINE TIMESTEP( bi, bj, iMin, iMax, jMin, jMax, K, |
SUBROUTINE TIMESTEP( bi, bj, iMin, iMax, jMin, jMax, k, |
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I dPhiHydX,dPhiHydY, phiSurfX, phiSurfY, |
I dPhiHydX,dPhiHydY, phiSurfX, phiSurfY, |
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I myIter, myThid ) |
I guDissip, gvDissip, |
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I myTime, myIter, myThid ) |
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C !DESCRIPTION: \bv |
C !DESCRIPTION: \bv |
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C *==========================================================* |
C *==========================================================* |
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C | S/R TIMESTEP |
C | S/R TIMESTEP |
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C dPhiHydX,Y :: Gradient (X & Y directions) of Hydrostatic Potential |
C dPhiHydX,Y :: Gradient (X & Y directions) of Hydrostatic Potential |
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C phiSurfX :: gradient of Surface potential (Pressure/rho, ocean) |
C phiSurfX :: gradient of Surface potential (Pressure/rho, ocean) |
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C phiSurfY :: or geopotential (atmos) in X and Y direction |
C phiSurfY :: or geopotential (atmos) in X and Y direction |
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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 dPhiHydX(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
_RL dPhiHydX(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
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_RL dPhiHydY(1-Olx:sNx+Olx,1-Oly:sNy+Oly) |
_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) |
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_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: |
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) |
_RL gUtmp(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL gVtmp(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
_RL gVtmp(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 |
CEOP |
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C Adams-Bashforth timestepping weights |
C Adams-Bashforth timestepping weights |
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ab05=-0.5-abeps |
ab05=-0.5-abeps |
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ENDIF |
ENDIF |
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C-- stagger time step: grad Phi_Hyp is not in gU,gV => add it in this S/R |
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IF (staggerTimeStep) THEN |
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phxFac = pfFacMom |
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phyFac = pfFacMom |
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ELSE |
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phxFac = 0. |
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phyFac = 0. |
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ENDIF |
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C-- explicit part of the surface potential gradient is added in this S/R |
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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C-- factors for gradient (X & Y directions) of Hydrostatic Potential |
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phxFac = pfFacMom |
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phyFac = pfFacMom |
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C-- including or excluding momentum forcing from Adams-Bashforth: |
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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-|--+----| |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C- Compute effective gU term (including Adams-Bashforth weights) : |
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DO j=jMin,jMax |
C- Initialize local arrays (not really necessary but safer) |
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DO i=iMin,iMax |
DO j=1-Oly,sNy+Oly |
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gUtmp(i,j) = ab15*gU(i,j,k,bi,bj) |
DO i=1-Olx,sNx+Olx |
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& + ab05*gUNm1(i,j,k,bi,bj) |
gUtmp(i,j) = 0. _d 0 |
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#ifdef INCLUDE_CD_CODE |
gVtmp(i,j) = 0. _d 0 |
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& + guCD(i,j,k,bi,bj) |
#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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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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IF ( .NOT.staggerTimeStep ) THEN |
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C-- Synchronous time step: add grad Phi_Hyp to gU,gV before doing Adams-Bashforth |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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gU(i,j,k,bi,bj) = gU(i,j,k,bi,bj) - phxFac*dPhiHydX(i,j) |
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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 |
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phxFac = 0. |
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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 |
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C-- Dissipation term inside the Adams-Bashforth: |
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IF ( momViscosity .AND. momDissip_In_AB) THEN |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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gU(i,j,k,bi,bj) = gU(i,j,k,bi,bj) + guDissip(i,j) |
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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 |
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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, |
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I myTime,myThid) |
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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 |
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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. |
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#ifdef ALLOW_ADAMSBASHFORTH_3 |
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CALL ADAMS_BASHFORTH3( |
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I bi, bj, k, |
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U gU, guNm, |
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I myIter, myThid ) |
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CALL ADAMS_BASHFORTH3( |
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I bi, bj, k, |
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U gV, gvNm, |
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I myIter, myThid ) |
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#else /* ALLOW_ADAMSBASHFORTH_3 */ |
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CALL ADAMS_BASHFORTH2( |
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I bi, bj, k, |
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U gU, guNm1, |
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I myIter, myThid ) |
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CALL ADAMS_BASHFORTH2( |
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I bi, bj, k, |
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U gV, gvNm1, |
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I myIter, myThid ) |
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#endif /* ALLOW_ADAMSBASHFORTH_3 */ |
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#ifdef NONLIN_FRSURF |
C-- Forcing term outside the Adams-Bashforth: |
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IF (.NOT. vectorInvariantMomentum |
C (not recommanded with CD-scheme ON) |
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& .AND. nonlinFreeSurf.GT.1) THEN |
IF (momForcing .AND. .NOT.momForcing_In_AB) THEN |
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IF (select_rStar.GT.0) THEN |
IF (useCDscheme) THEN |
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DO j=jMin,jMax |
DO j=jMin,jMax |
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DO i=iMin,iMax |
DO i=iMin,iMax |
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gUtmp(i,j) = gUtmp(i,j)/rStarExpW(i,j,bi,bj) |
gUtmp(i,j) = gUtmp(i,j) - gU(i,j,k,bi,bj) |
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gVtmp(i,j) = gVtmp(i,j) - gV(i,j,k,bi,bj) |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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ELSE |
ENDIF |
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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, |
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I myTime,myThid) |
183 |
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C- for CD-scheme, compute gU,Vtmp = gU,V^n + forcing |
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IF (useCDscheme) THEN |
186 |
DO j=jMin,jMax |
DO j=jMin,jMax |
187 |
DO i=iMin,iMax |
DO i=iMin,iMax |
188 |
IF ( k.EQ.ksurfW(i,j,bi,bj) ) THEN |
gUtmp(i,j) = gUtmp(i,j) + gU(i,j,k,bi,bj) |
189 |
gUtmp(i,j) = gUtmp(i,j) |
gVtmp(i,j) = gVtmp(i,j) + gV(i,j,k,bi,bj) |
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& *hFacW(i,j,k,bi,bj)/hFac_surfW(i,j,bi,bj) |
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ENDIF |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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ENDIF |
ENDIF |
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ENDIF |
ENDIF |
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#endif |
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C Step forward zonal velocity (store in Gu) |
#ifdef ALLOW_CD_CODE |
196 |
DO j=jMin,jMax |
IF (useCDscheme) THEN |
197 |
DO i=iMin,iMax |
C- Step forward D-grid velocity using C-grid gU,Vtmp = gU,V^n + forcing |
198 |
gUNm1(i,j,k,bi,bj) = uVel(i,j,k,bi,bj) |
C and return coriolis terms on C-grid (guCor,gvCor) |
199 |
& +deltaTmom*( |
CALL CD_CODE_SCHEME( |
200 |
& gUtmp(i,j) |
I bi,bj,k, dPhiHydX,dPhiHydY, gUtmp,gVtmp, |
201 |
& - psFac*phiSurfX(i,j) |
O guCor,gvCor, |
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& - phxFac*dPhiHydX(i,j) |
I myTime, myIter, myThid) |
203 |
& )*_maskW(i,j,k,bi,bj) |
DO j=jMin,jMax |
204 |
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DO i=iMin,iMax |
205 |
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gUtmp(i,j) = gU(i,j,k,bi,bj) |
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& + guCor(i,j) |
207 |
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gVtmp(i,j) = gV(i,j,k,bi,bj) |
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& + gvCor(i,j) |
209 |
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ENDDO |
210 |
ENDDO |
ENDDO |
211 |
ENDDO |
ELSE |
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#endif /* ALLOW_CD_CODE */ |
213 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
DO j=jMin,jMax |
214 |
C- Compute effective gV term (including Adams-Bashforth weights) : |
DO i=iMin,iMax |
215 |
DO j=jMin,jMax |
gUtmp(i,j) = gU(i,j,k,bi,bj) |
216 |
DO i=iMin,iMax |
gVtmp(i,j) = gV(i,j,k,bi,bj) |
217 |
gVtmp(i,j) = ab15*gV(i,j,k,bi,bj) |
ENDDO |
218 |
& + ab05*gVNm1(i,j,k,bi,bj) |
ENDDO |
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#ifdef INCLUDE_CD_CODE |
#ifdef ALLOW_CD_CODE |
220 |
& + gvCD(i,j,k,bi,bj) |
ENDIF |
221 |
#endif |
#endif |
222 |
ENDDO |
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ENDDO |
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#ifdef NONLIN_FRSURF |
#ifdef NONLIN_FRSURF |
224 |
IF (.NOT. vectorInvariantMomentum |
IF (.NOT. vectorInvariantMomentum |
225 |
& .AND. nonlinFreeSurf.GT.1) THEN |
& .AND. nonlinFreeSurf.GT.1) THEN |
226 |
IF (select_rStar.GT.0) THEN |
IF (select_rStar.GT.0) THEN |
227 |
DO j=jMin,jMax |
DO j=jMin,jMax |
228 |
DO i=iMin,iMax |
DO i=iMin,iMax |
229 |
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gUtmp(i,j) = gUtmp(i,j)/rStarExpW(i,j,bi,bj) |
230 |
gVtmp(i,j) = gVtmp(i,j)/rStarExpS(i,j,bi,bj) |
gVtmp(i,j) = gVtmp(i,j)/rStarExpS(i,j,bi,bj) |
231 |
ENDDO |
ENDDO |
232 |
ENDDO |
ENDDO |
233 |
ELSE |
ELSE |
234 |
DO j=jMin,jMax |
DO j=jMin,jMax |
235 |
DO i=iMin,iMax |
DO i=iMin,iMax |
236 |
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IF ( k.EQ.ksurfW(i,j,bi,bj) ) THEN |
237 |
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gUtmp(i,j) = gUtmp(i,j) |
238 |
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& *hFacW(i,j,k,bi,bj)/hFac_surfW(i,j,bi,bj) |
239 |
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ENDIF |
240 |
IF ( k.EQ.ksurfS(i,j,bi,bj) ) THEN |
IF ( k.EQ.ksurfS(i,j,bi,bj) ) THEN |
241 |
gVtmp(i,j) = gVtmp(i,j) |
gVtmp(i,j) = gVtmp(i,j) |
242 |
& *hFacS(i,j,k,bi,bj)/hFac_surfS(i,j,bi,bj) |
& *hFacS(i,j,k,bi,bj)/hFac_surfS(i,j,bi,bj) |
245 |
ENDDO |
ENDDO |
246 |
ENDIF |
ENDIF |
247 |
ENDIF |
ENDIF |
248 |
#endif |
#endif /* NONLIN_FRSURF */ |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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252 |
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C-- Dissipation term outside the Adams-Bashforth: |
253 |
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IF ( momViscosity .AND. .NOT.momDissip_In_AB ) THEN |
254 |
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DO j=jMin,jMax |
255 |
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DO i=iMin,iMax |
256 |
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gUtmp(i,j) = gUtmp(i,j) + guDissip(i,j) |
257 |
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gVtmp(i,j) = gVtmp(i,j) + gvDissip(i,j) |
258 |
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ENDDO |
259 |
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ENDDO |
260 |
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ENDIF |
261 |
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262 |
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C Step forward zonal velocity (store in Gu) |
263 |
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DO j=jMin,jMax |
264 |
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DO i=iMin,iMax |
265 |
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gU(i,j,k,bi,bj) = uVel(i,j,k,bi,bj) |
266 |
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& +deltaTmom*( |
267 |
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& gUtmp(i,j) |
268 |
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& - psFac*phiSurfX(i,j) |
269 |
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& - phxFac*dPhiHydX(i,j) |
270 |
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& )*_maskW(i,j,k,bi,bj) |
271 |
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ENDDO |
272 |
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ENDDO |
273 |
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274 |
C Step forward meridional velocity (store in Gv) |
C Step forward meridional velocity (store in Gv) |
275 |
DO j=jMin,jMax |
DO j=jMin,jMax |
276 |
DO i=iMin,iMax |
DO i=iMin,iMax |
277 |
gVNm1(i,j,k,bi,bj) = vVel(i,j,k,bi,bj) |
gV(i,j,k,bi,bj) = vVel(i,j,k,bi,bj) |
278 |
& +deltaTmom*( |
& +deltaTmom*( |
279 |
& gVtmp(i,j) |
& gVtmp(i,j) |
280 |
& - psFac*phiSurfY(i,j) |
& - psFac*phiSurfY(i,j) |
283 |
ENDDO |
ENDDO |
284 |
ENDDO |
ENDDO |
285 |
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286 |
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#ifdef ALLOW_DIAGNOSTICS |
287 |
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#ifdef ALLOW_CD_CODE |
288 |
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IF ( useCDscheme .AND. useDiagnostics ) THEN |
289 |
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CALL DIAGNOSTICS_FILL(guCor,'Um_Cori ',k,1,2,bi,bj,myThid) |
290 |
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CALL DIAGNOSTICS_FILL(gvCor,'Vm_Cori ',k,1,2,bi,bj,myThid) |
291 |
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ENDIF |
292 |
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#endif /* ALLOW_CD_CODE */ |
293 |
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#endif /* ALLOW_DIAGNOSTICS */ |
294 |
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295 |
RETURN |
RETURN |
296 |
END |
END |