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adcroft |
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C $Header: /u/gcmpack/models/MITgcmUV/model/src/correction_step.F,v 1.3 1998/06/09 16:48:02 cnh Exp $ |
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adcroft |
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#include "CPP_EEOPTIONS.h" |
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C /==========================================================\ |
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C | S/R CORRECTION_STEP | |
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C | o Corrects the horizontal flow fields with the surface | |
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C | pressure gradient. | |
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C \==========================================================/ |
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SUBROUTINE CORRECTION_STEP( bi, bj, iMin, iMax, jMin, jMax, |
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I K, pSurfX, pSurfY, |
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I myThid ) |
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implicit none |
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! Common |
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#include "SIZE.h" |
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#include "DYNVARS.h" |
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cnh |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "GRID.h" |
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#include "CG2D.h" |
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C == Routine Arguments == |
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INTEGER bi,bj,iMin,iMax,jMin,jMax |
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INTEGER K |
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_RL pSurfX(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL pSurfY(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER myThid |
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C == Local variables == |
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INTEGER i,j |
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_RL ab15,ab05,hxFac,hyFac,rRhoNil |
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C Adams-Bashforth timestepping weights |
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ab15=1.5+abeps |
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ab05=-0.5-abeps |
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C On/off scaling paramters |
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hxFac = pfFacMom |
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hyFac = pfFacMom |
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rRhoNil=1. / rhonil |
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C Step forward zonal velocity |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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uVel(i,j,k,bi,bj)=( gUNm1(i,j,k,bi,bj) |
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& -deltaTmom*hxFac*rRhonil *pSurfX(i,j) |
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& )*_maskW(i,j,k,bi,bj) |
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gUNm1(i,j,k,bi,bj)=gU(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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C Step forward meridional velocity |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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vVel(i,j,k,bi,bj)=( gVNm1(i,j,k,bi,bj) |
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& -deltaTmom*hyFac*rRhonil *pSurfY(i,j) |
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& )*_maskS(i,j,k,bi,bj) |
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gVNm1(i,j,k,bi,bj)=gV(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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C Rotate theta/gT/gTnm1 |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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theta(i,j,k,bi,bj)=gTNm1(i,j,k,bi,bj) |
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gTNm1(i,j,k,bi,bj)=gT(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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C Rotate salt/gS/gSnm1 |
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DO j=jMin,jMax |
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DO i=iMin,iMax |
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salt(i,j,k,bi,bj)=gSNm1(i,j,k,bi,bj) |
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gSNm1(i,j,k,bi,bj)=gS(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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RETURN |
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END |