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C $Header: /u/gcmpack/MITgcm/verification/aim.5l_cs/code/shap_filt_relvort3.F,v 1.3 2003/10/31 20:35:32 edhill Exp $ |
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C $Name: $ |
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|
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#include "SHAP_FILT_OPTIONS.h" |
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|
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SUBROUTINE SHAP_FILT_RELVORT3( |
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I bi,bj,k, |
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I uFld, vFld, hFacZ, |
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O vort3, |
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I myThid) |
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IMPLICIT NONE |
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C *==========================================================* |
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C | S/R SHAP_FILT_RELVORT3 |
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C *==========================================================* |
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C | copy of S/R MOM_VI_CALC_RELVORT3 (keep pkgs independent) |
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C *==========================================================* |
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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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C == Routine arguments == |
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C myThid - Instance number for this innvocation of CALC_MOM_RHS |
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INTEGER bi,bj,k |
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_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vort3(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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INTEGER myThid |
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|
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#ifdef ALLOW_SHAP_FILT |
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C == Local variables == |
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INTEGER i,j |
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_RL AZcorner |
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|
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DO J=2-Oly,sNy+Oly |
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DO I=2-Olx,sNx+Olx |
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|
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C Horizontal curl of flow field - ignoring lopping factors |
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vort3(I,J)= |
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& recip_rAz(I,J,bi,bj)*( |
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& vFld(I,J)*dyc(I,J,bi,bj) |
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& -vFld(I-1,J)*dyc(I-1,J,bi,bj) |
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& -uFld(I,J)*dxc(I,J,bi,bj) |
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& +uFld(I,J-1)*dxc(I,J-1,bi,bj) |
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& ) |
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|
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C Horizontal curl of flow field - including lopping factors |
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c IF (hFacZ(i,j).NE.0.) THEN |
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c vort3(I,J)= |
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c & recip_rAz(I,J,bi,bj)*( |
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c & vFld(I,J)*dyc(I,J,bi,bj)*_hFacW(i,j,k,bi,bj) |
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c & -vFld(I-1,J)*dyc(I-1,J,bi,bj)*_hFacW(i-1,j,k,bi,bj) |
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c & -uFld(I,J)*dxc(I,J,bi,bj)*_hFacS(i,j,k,bi,bj) |
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c & +uFld(I,J-1)*dxc(I,J-1,bi,bj)*_hFacS(i,j-1,k,bi,bj) |
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c & ) |
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c & /hFacZ(i,j) |
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c ELSE |
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c vort3(I,J)=0. |
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c ENDIF |
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|
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ENDDO |
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ENDDO |
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|
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C Special stuff for Cubed Sphere |
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IF (useCubedSphereExchange) THEN |
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AZcorner = 0.75 _d 0 |
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I=1 |
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J=1 |
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c vort3(I,J)= |
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c & +recip_rAz(I,J,bi,bj)*( |
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vort3(I,J)= |
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& +recip_rA(I,J,bi,bj)/AZcorner*( |
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& vFld(I,J)*dyc(I,J,bi,bj) |
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& -uFld(I,J)*dxc(I,J,bi,bj) |
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& +uFld(I,J-1)*dxc(I,J-1,bi,bj) |
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& ) |
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cph & -vFld(I-1,J)*dyc(I-1,J,bi,bj) |
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I=sNx+1 |
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J=1 |
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c vort3(I,J)= |
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c & +recip_rAz(I,J,bi,bj)*( |
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vort3(I,J)= |
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& +recip_rA(I-1,J,bi,bj)/AZcorner*( |
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& -vFld(I-1,J)*dyc(I-1,J,bi,bj) |
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& -uFld(I,J)*dxc(I,J,bi,bj) |
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& +uFld(I,J-1)*dxc(I,J-1,bi,bj) |
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& ) |
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cph & vFld(I,J)*dyc(I,J,bi,bj) |
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I=1 |
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J=sNy+1 |
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c vort3(I,J)= |
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c & +recip_rAz(I,J,bi,bj)*( |
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vort3(I,J)= |
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& +recip_rA(I,J-1,bi,bj)/AZcorner*( |
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& vFld(I,J)*dyc(I,J,bi,bj) |
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& -uFld(I,J)*dxc(I,J,bi,bj) |
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& +uFld(I,J-1)*dxc(I,J-1,bi,bj) |
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& ) |
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cph & -vFld(I-1,J)*dyc(I-1,J,bi,bj) |
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I=sNx+1 |
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J=sNy+1 |
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c vort3(I,J)= |
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c & +recip_rAz(I,J,bi,bj)*( |
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vort3(I,J)= |
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& +recip_rA(I-1,J-1,bi,bj)/AZcorner*( |
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& -vFld(I-1,J)*dyc(I-1,J,bi,bj) |
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& -uFld(I,J)*dxc(I,J,bi,bj) |
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& +uFld(I,J-1)*dxc(I,J-1,bi,bj) |
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& ) |
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cph & vFld(I,J)*dyc(I,J,bi,bj) |
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ENDIF |
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|
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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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