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C $Header$ |
C $Header$ |
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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, |
I dPhiHydX,dPhiHydY, phiSurfX, phiSurfY, |
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I K, |
I guDissip, gvDissip, |
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I myThid ) |
I myTime, myIter, myThid ) |
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implicit none |
C !DESCRIPTION: \bv |
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! Common |
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 == |
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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 dPhiHydX,Y :: Gradient (X & Y directions) of Hydrostatic Potential |
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C phiSurfX :: gradient of Surface potential (Pressure/rho, ocean) |
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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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INTEGER myThid |
_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) |
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_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 |
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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 |
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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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#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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ab15=1.5+abeps |
IF (myIter .EQ. 0) THEN |
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ab05=-0.5-abeps |
ab15=1.0 |
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ab05=0.0 |
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ELSE |
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ab15=1.5+abeps |
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ab05=-0.5-abeps |
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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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DO j=jMin,jMax |
psFac = pfFacMom*(1. _d 0 - implicSurfPress) |
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DO i=iMin,iMax |
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gUNm1(i,j,k,bi,bj)=uVel(i,j,k,bi,bj) |
C-- factors for gradient (X & Y directions) of Hydrostatic Potential |
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& +deltaTmom*(ab15*gU(i,j,k,bi,bj)+ab05*gUNm1(i,j,k,bi,bj) |
phxFac = pfFacMom |
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#ifdef ALLOW_CD |
phyFac = pfFacMom |
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& +guCD(i,j,k,bi,bj) |
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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-|--+----| |
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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 |
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gUtmp(i,j) = 0. _d 0 |
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gVtmp(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) |
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ENDDO |
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ENDDO |
ENDDO |
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ENDDO |
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C Step forward meridional velocity (store in Gv) |
IF ( .NOT.staggerTimeStep ) THEN |
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DO j=jMin,jMax |
C-- Synchronous time step: add grad Phi_Hyp to gU,gV before doing Adams-Bashforth |
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DO i=iMin,iMax |
DO j=jMin,jMax |
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gVNm1(i,j,k,bi,bj)=vVel(i,j,k,bi,bj) |
DO i=iMin,iMax |
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& +deltaTmom*(ab15*gV(i,j,k,bi,bj)+ab05*gVNm1(i,j,k,bi,bj) |
gU(i,j,k,bi,bj) = gU(i,j,k,bi,bj) - phxFac*dPhiHydX(i,j) |
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#ifdef ALLOW_CD |
gV(i,j,k,bi,bj) = gV(i,j,k,bi,bj) - phyFac*dPhiHydY(i,j) |
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& +gvCD(i,j,k,bi,bj) |
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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C-- Forcing term outside the Adams-Bashforth: |
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C (not recommanded with CD-scheme ON) |
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IF (momForcing .AND. .NOT.momForcing_In_AB) THEN |
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IF (useCDscheme) THEN |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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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 |
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ENDDO |
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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) |
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C- for CD-scheme, compute gU,Vtmp = gU,V^n + forcing |
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IF (useCDscheme) THEN |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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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 |
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ENDDO |
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ENDIF |
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ENDIF |
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#ifdef ALLOW_CD_CODE |
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IF (useCDscheme) THEN |
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C- Step forward D-grid velocity using C-grid gU,Vtmp = gU,V^n + forcing |
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C and return coriolis terms on C-grid (guCor,gvCor) |
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CALL CD_CODE_SCHEME( |
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I bi,bj,k, dPhiHydX,dPhiHydY, gUtmp,gVtmp, |
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O guCor,gvCor, |
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I myTime, myIter, myThid) |
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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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& + guCor(i,j) |
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gVtmp(i,j) = gV(i,j,k,bi,bj) |
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& + gvCor(i,j) |
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ENDDO |
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ENDDO |
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ELSE |
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#endif /* ALLOW_CD_CODE */ |
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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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#ifdef ALLOW_CD_CODE |
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ENDIF |
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#endif |
#endif |
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& )*_maskS(i,j,k,bi,bj) |
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#ifdef NONLIN_FRSURF |
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IF (.NOT. vectorInvariantMomentum |
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& .AND. nonlinFreeSurf.GT.1) THEN |
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IF (select_rStar.GT.0) THEN |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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gUtmp(i,j) = gUtmp(i,j)/rStarExpW(i,j,bi,bj) |
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gVtmp(i,j) = gVtmp(i,j)/rStarExpS(i,j,bi,bj) |
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ENDDO |
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ENDDO |
ENDDO |
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ENDDO |
ELSE |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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IF ( k.EQ.ksurfW(i,j,bi,bj) ) THEN |
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gUtmp(i,j) = gUtmp(i,j) |
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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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IF ( k.EQ.ksurfS(i,j,bi,bj) ) THEN |
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gVtmp(i,j) = gVtmp(i,j) |
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& *hFacS(i,j,k,bi,bj)/hFac_surfS(i,j,bi,bj) |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDIF |
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#endif /* NONLIN_FRSURF */ |
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C Step forward temperature |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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IF (tempStepping) THEN |
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DO j=jMin,jMax |
C-- Dissipation term outside the Adams-Bashforth: |
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DO i=iMin,iMax |
IF ( momViscosity .AND. .NOT.momDissip_In_AB ) THEN |
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theta(i,j,k,bi,bj)=theta(i,j,k,bi,bj) |
DO j=jMin,jMax |
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& +deltaTtracer*(ab15*gT(i,j,k,bi,bj)+ab05*gTNm1(i,j,k,bi,bj)) |
DO i=iMin,iMax |
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gTNm1(i,j,k,bi,bj)=gT(i,j,k,bi,bj) |
gUtmp(i,j) = gUtmp(i,j) + guDissip(i,j) |
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gVtmp(i,j) = gVtmp(i,j) + gvDissip(i,j) |
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ENDDO |
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ENDDO |
ENDDO |
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ENDDO |
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ENDIF |
ENDIF |
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C Step forward salt |
C Step forward zonal velocity (store in Gu) |
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IF (saltStepping) THEN |
DO j=jMin,jMax |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
DO i=iMin,iMax |
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salt(i,j,k,bi,bj)=salt(i,j,k,bi,bj) |
gU(i,j,k,bi,bj) = uVel(i,j,k,bi,bj) |
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& +deltaTtracer*(ab15*gS(i,j,k,bi,bj)+ab05*gSNm1(i,j,k,bi,bj)) |
& +deltaTmom*( |
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gSNm1(i,j,k,bi,bj)=gS(i,j,k,bi,bj) |
& gUtmp(i,j) |
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& - psFac*phiSurfX(i,j) |
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& - phxFac*dPhiHydX(i,j) |
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& )*_maskW(i,j,k,bi,bj) |
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ENDDO |
ENDDO |
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ENDDO |
ENDDO |
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C Step forward meridional velocity (store in Gv) |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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gV(i,j,k,bi,bj) = vVel(i,j,k,bi,bj) |
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& +deltaTmom*( |
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& gVtmp(i,j) |
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& - psFac*phiSurfY(i,j) |
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& - phyFac*dPhiHydY(i,j) |
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& )*_maskS(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_DIAGNOSTICS |
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#ifdef ALLOW_CD_CODE |
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IF ( useCDscheme .AND. useDiagnostics ) THEN |
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CALL DIAGNOSTICS_FILL(guCor,'Um_Cori ',k,1,2,bi,bj,myThid) |
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CALL DIAGNOSTICS_FILL(gvCor,'Vm_Cori ',k,1,2,bi,bj,myThid) |
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ENDIF |
ENDIF |
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#endif /* ALLOW_CD_CODE */ |
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#endif /* ALLOW_DIAGNOSTICS */ |
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RETURN |
RETURN |
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END |
END |