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C $Header: /u/gcmpack/models/MITgcmUV/pkg/shap_filt/Attic/shap_filt_tracer_s2.F,v 1.1.2.5 2001/05/07 18:40:02 adcroft Exp $ |
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C $Name: pre38-close $ |
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|
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#include "SHAP_FILT_OPTIONS.h" |
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|
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SUBROUTINE SHAP_FILT_TRACER_S2( |
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U field, |
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I myTime, myThid ) |
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C /==========================================================\ |
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C | S/R SHAP_FILT_TRACER_S2 | |
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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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|
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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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#include "SHAP_FILT.h" |
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#include "SHAP_FILT_TRACER.h" |
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|
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C == Routine arguments |
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_RL field(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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|
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#ifdef ALLOW_SHAP_FILT |
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|
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C == Local variables == |
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INTEGER bi,bj,K,I,J,N |
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_RL tmpGrd(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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|
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IF (nShapT.gt.0) THEN |
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|
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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 |
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tmpFld(i,j,k,bi,bj)=field(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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|
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|
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C ( d_xx +d_yy )^n tmpFld |
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|
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DO N=1,nShapT |
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|
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_EXCH_XYZ_R8( tmpFld, myThid ) |
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|
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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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|
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DO J=1,sNy |
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DO I=1,sNx |
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tmpGrd(i,j) = -0.125*( |
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& ( tmpFld(i+1,j,k,bi,bj)-tmpFld( i ,j,k,bi,bj) ) |
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& *_maskW(i+1,j,k,bi,bj) |
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& -( tmpFld( i ,j,k,bi,bj)-tmpFld(i-1,j,k,bi,bj) ) |
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& *_maskW( i ,j,k,bi,bj) |
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& +( tmpFld(i,j+1,k,bi,bj)-tmpFld(i, j ,k,bi,bj) ) |
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& *_maskS(i,j+1,k,bi,bj) |
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& -( tmpFld(i, j ,k,bi,bj)-tmpFld(i,j-1,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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|
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DO J=1,sNy |
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DO I=1,sNx |
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tmpFld(i,j,k,bi,bj) = tmpGrd(i,j) |
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ENDDO |
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ENDDO |
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|
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ENDDO |
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ENDDO |
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ENDDO |
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|
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ENDDO |
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|
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C F <- [1-(d_xx+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 |
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field(i,j,k,bi,bj)=field(i,j,k,bi,bj)-tmpFld(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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|
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_EXCH_XYZ_R8( field, myThid ) |
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|
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ENDIF |
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#endif /* ALLOW_SHAP_FILT */ |
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|
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RETURN |
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END |
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