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adcroft |
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C $Header: /u/gcmpack/models/MITgcmUV/pkg/shap_filt/Attic/shap_filt_uv_s4.F,v 1.1.2.1 2001/05/07 19:02:52 adcroft Exp $ |
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C $Name: pre38-close $ |
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#include "SHAP_FILT_OPTIONS.h" |
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SUBROUTINE SHAP_FILT_UV_S4( |
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U uFld, vFld, |
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I myTime, myThid ) |
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C /==========================================================\ |
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C | S/R SHAP_FILT_UV | |
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C | Applies Shapiro filter to tracer field over one XY slice | |
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C | of one tile at a time. | |
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C \==========================================================/ |
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IMPLICIT NONE |
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C == Global variables === |
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#include "SIZE.h" |
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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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#ifdef ALLOW_SHAP_FILT |
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#include "SHAP_FILT.h" |
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#include "SHAP_FILT_UV.h" |
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#endif |
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C == Routine arguments |
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_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL myTime |
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INTEGER myThid |
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#ifdef ALLOW_SHAP_FILT |
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C == Local variables == |
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INTEGER bi,bj,K,I,J,N |
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_RL tmpGrdU(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL tmpGrdV(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL maskZj,maskZp |
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IF (nShapUV.gt.0) THEN |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO K=1,Nr |
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DO J=1,sNy |
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DO I=1,sNx+1 |
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tmpFldU(i,j,k,bi,bj)=uFld(i,j,k,bi,bj) |
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& *_maskW(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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DO J=1,sNy+1 |
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DO I=1,sNx |
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tmpFldV(i,j,k,bi,bj)=vFld(i,j,k,bi,bj) |
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& *_maskS(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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C d_xx^n tmpFld |
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DO N=1,nShapUV |
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CALL EXCH_UV_XYZ_RL(tmpFldU,tmpFldV,.TRUE.,myThid) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO K=1,Nr |
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C Uxx |
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DO J=1,sNy |
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DO I=1,sNx+1 |
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tmpGrdU(i,j) = -0.25*( |
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& tmpFldU(i-1,j,k,bi,bj) + tmpFldU(i+1,j,k,bi,bj) |
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& - 2.*tmpFldU(i,j,k,bi,bj) |
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& )*_maskW(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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DO J=1,sNy |
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DO I=1,sNx+1 |
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tmpFldU(i,j,k,bi,bj) = tmpGrdU(i,j) |
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ENDDO |
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ENDDO |
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C Vyy |
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DO J=1,sNy+1 |
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DO I=1,sNx |
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tmpGrdV(i,j) = -0.25*( |
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& tmpFldV(i,j-1,k,bi,bj) + tmpFldV(i,j+1,k,bi,bj) |
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& - 2.*tmpFldV(i,j,k,bi,bj) |
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& )*_maskS(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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DO J=1,sNy+1 |
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DO I=1,sNx |
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tmpFldV(i,j,k,bi,bj) = tmpGrdV(i,j) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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C F <- [1-d_xx^n]F |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO K=1,Nr |
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DO J=1,sNy |
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DO I=1,sNx+1 |
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tmpFldU(i,j,k,bi,bj)=uFld(i,j,k,bi,bj)-tmpFldU(i,j,k,bi,bj) |
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uFld(i,j,k,bi,bj)=tmpFldU(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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DO J=1,sNy+1 |
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DO I=1,sNx |
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tmpFldV(i,j,k,bi,bj)=vFld(i,j,k,bi,bj)-tmpFldV(i,j,k,bi,bj) |
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vFld(i,j,k,bi,bj)=tmpFldV(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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C d_yy^n tmpFld |
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DO N=1,nShapUV |
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CALL EXCH_UV_XYZ_RL(tmpFldU,tmpFldV,.TRUE.,myThid) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO K=1,Nr |
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C Uyy |
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DO J=1,sNy |
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DO I=1,sNx+1 |
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maskZj=_maskS(i-1, j ,k,bi,bj) |
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& *_maskS( i , j ,k,bi,bj) |
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maskZp=_maskS(i-1,j+1,k,bi,bj) |
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& *_maskS( i ,j+1,k,bi,bj) |
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tmpGrdU(i,j) = -0.25*( |
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& (tmpFldU(i,j+1,k,bi,bj)-tmpFldU(i, j ,k,bi,bj))*maskZp |
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& -(tmpFldU(i, j ,k,bi,bj)-tmpFldU(i,j-1,k,bi,bj))*maskZj |
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#ifdef NO_SLIP_SHAP |
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& -2.*(2.-maskZj-maskZp)*tmpFldU(i,j,k,bi,bj) |
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#endif |
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& )*_maskW(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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IF (useCubedSphereExchange) THEN |
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J=1 |
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DO I=1,sNx+1,sNx |
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maskZj=maskS(i-1, j ,k,bi,bj)*maskS( i , j ,k,bi,bj) |
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maskZp=maskS(i-1,j+1,k,bi,bj)*maskS( i ,j+1,k,bi,bj) |
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tmpGrdU(i,j) = -0.25*( |
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& (tmpFldU(i,j+1,k,bi,bj)-tmpFldU(i, j ,k,bi,bj))*maskZp |
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& -(tmpFldU(i, j ,k,bi,bj)-0*tmpFldU(i,j-1,k,bi,bj))*maskZj |
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#ifdef NO_SLIP_SHAP |
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& -2.*(2.-maskZj-maskZp)*tmpFldU(i,j,k,bi,bj) |
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#endif |
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& )*_maskW(i,j,k,bi,bj) |
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ENDDO |
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J=sNy |
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DO I=1,sNx+1,sNx |
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maskZj=maskS(i-1, j ,k,bi,bj)*maskS( i , j ,k,bi,bj) |
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maskZp=maskS(i-1,j+1,k,bi,bj)*maskS( i ,j+1,k,bi,bj) |
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tmpGrdU(i,j) = -0.25*( |
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& (0*tmpFldU(i,j+1,k,bi,bj)-tmpFldU(i, j ,k,bi,bj))*maskZp |
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& -(tmpFldU(i, j ,k,bi,bj)-tmpFldU(i,j-1,k,bi,bj))*maskZj |
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#ifdef NO_SLIP_SHAP |
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& -2.*(2.-maskZj-maskZp)*tmpFldU(i,j,k,bi,bj) |
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#endif |
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& )*_maskW(i,j,k,bi,bj) |
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ENDDO |
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ENDIF |
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DO J=1,sNy |
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DO I=1,sNx+1 |
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tmpFldU(i,j,k,bi,bj) = tmpGrdU(i,j) |
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ENDDO |
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ENDDO |
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C Vxx |
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DO J=1,sNy+1 |
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DO I=1,sNx |
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maskZj=_maskW( i ,j-1,k,bi,bj) |
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& *_maskW( i , j ,k,bi,bj) |
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maskZp=_maskW(i+1,j-1,k,bi,bj) |
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& *_maskW(i+1, j ,k,bi,bj) |
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tmpGrdV(i,j) = -0.25*( |
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& (tmpFldV(i+1,j,k,bi,bj)-tmpFldV( i ,j,k,bi,bj))*maskZp |
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& -(tmpFldV( i ,j,k,bi,bj)-tmpFldV(i-1,j,k,bi,bj))*maskZj |
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#ifdef NO_SLIP_SHAP |
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& -2.*(2.-maskZj-maskZp)*tmpFldV(i,j,k,bi,bj) |
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#endif |
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& )*_maskS(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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IF (useCubedSphereExchange) THEN |
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DO J=1,sNy+1,sNy |
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I=1 |
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maskZj=maskW( i ,j-1,k,bi,bj)*maskW( i , j ,k,bi,bj) |
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maskZp=maskW(i+1,j-1,k,bi,bj)*maskW(i+1, j ,k,bi,bj) |
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tmpGrdV(i,j) = -0.25*( |
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& (tmpFldV(i+1,j,k,bi,bj)-tmpFldV( i ,j,k,bi,bj))*maskZp |
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& -(tmpFldV( i ,j,k,bi,bj)-0*tmpFldV(i-1,j,k,bi,bj))*maskZj |
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#ifdef NO_SLIP_SHAP |
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& -2.*(2.-maskZj-maskZp)*tmpFldV(i,j,k,bi,bj) |
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#endif |
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& )*_maskS(i,j,k,bi,bj) |
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ENDDO |
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DO J=1,sNy+1,sNy |
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I=sNx |
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maskZj=maskW( i ,j-1,k,bi,bj)*maskW( i , j ,k,bi,bj) |
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maskZp=maskW(i+1,j-1,k,bi,bj)*maskW(i+1, j ,k,bi,bj) |
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tmpGrdV(i,j) = -0.25*( |
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& (0*tmpFldV(i+1,j,k,bi,bj)-tmpFldV( i ,j,k,bi,bj))*maskZp |
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& -(tmpFldV( i ,j,k,bi,bj)-tmpFldV(i-1,j,k,bi,bj))*maskZj |
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#ifdef NO_SLIP_SHAP |
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& -2.*(2.-maskZj-maskZp)*tmpFldV(i,j,k,bi,bj) |
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#endif |
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& )*_maskS(i,j,k,bi,bj) |
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ENDDO |
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ENDIF |
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DO J=1,sNy+1 |
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DO I=1,sNx |
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tmpFldV(i,j,k,bi,bj) = tmpGrdV(i,j) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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C F <- [1-d_yy^n]F |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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DO K=1,Nr |
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DO J=1,sNy |
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DO I=1,sNx+1 |
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uFld(i,j,k,bi,bj)=uFld(i,j,k,bi,bj)-tmpFldU(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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DO J=1,sNy+1 |
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DO I=1,sNx |
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vFld(i,j,k,bi,bj)=vFld(i,j,k,bi,bj)-tmpFldV(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_SHAP_FILT */ |
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RETURN |
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END |