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adcroft |
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C $Header: /u/gcmpack/MITgcm/pkg/mom_vecinv/mom_vi_v_coriolis_c4.F,v 1.2 2001/05/29 14:01:39 adcroft Exp $ |
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C $Name: $ |
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adcroft |
1.2 |
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adcroft |
1.3 |
#include "MOM_VECINV_OPTIONS.h" |
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adcroft |
1.2 |
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SUBROUTINE MOM_VI_V_CORIOLIS_C4( |
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I bi,bj,K, |
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I uFld,omega3,r_hFacZ, |
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O vCoriolisTerm, |
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I myThid) |
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IMPLICIT NONE |
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C /==========================================================\ |
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C | S/R MOM_VI_V_CORIOLIS | |
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C |==========================================================| |
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C \==========================================================/ |
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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 "GRID.h" |
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#include "PARAMS.h" |
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C == Routine arguments == |
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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 omega3(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS r_hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL vCoriolisTerm(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 uBarXY,vort3v,Rjp,Rjm |
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LOGICAL upwindVort3 |
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LOGICAL fourthVort3 |
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upwindVort3=.FALSE. |
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fourthVort3=.TRUE. |
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DO J=2-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx-1 |
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uBarXY=0.25*( |
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& uFld( i , j )*dyG( i , j ,bi,bj)*hFacW( i , j ,k,bi,bj) |
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& +uFld(i+1, j )*dyG(i+1, j ,bi,bj)*hFacW(i+1, j ,k,bi,bj) |
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& +uFld( i ,j-1)*dyG( i ,j-1,bi,bj)*hFacW( i ,j-1,k,bi,bj) |
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& +uFld(i+1,j-1)*dyG(i+1,j-1,bi,bj)*hFacW(i+1,j-1,k,bi,bj)) |
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c uBarXY=0.25*( uFld(i, j )+uFld(i+1, j ) |
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c & +uFld(i,j-1)+uFld(i+1,j-1)) |
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IF (upwindVort3) THEN |
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IF (uBarXY.GT.0.) THEN |
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vort3v=omega3(i,j)*r_hFacZ(i,j) |
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ELSE |
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vort3v=omega3(i+1,j)*r_hFacZ(i+1,j) |
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ENDIF |
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ELSEIF (fourthVort3) THEN |
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Rjp=omega3(i+2,j)*r_hFacZ(i+2,j) |
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& -omega3(i+1,j)*r_hFacZ(i+1,j) |
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Rjm=omega3(i,j)*r_hFacZ(i,j) |
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& -omega3(i-1,j)*r_hFacZ(i-1,j) |
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vort3v=0.5*(omega3(i,j)*r_hFacZ(i,j) |
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& +omega3(i+1,j)*r_hFacZ(i+1,j) |
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& -1./12.*(Rjp-Rjm) |
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& ) |
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ELSE |
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vort3v=0.5*(omega3(i,j)*r_hFacZ(i,j) |
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& +omega3(i+1,j)*r_hFacZ(i+1,j)) |
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ENDIF |
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vCoriolisTerm(i,j)= |
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C high order vorticity advection term |
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& -vort3v*uBarXY*recip_dyc(i,j,bi,bj) |
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C linear Coriolis term |
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c & -0.5 *(fCoriG(I,J,bi,bj)+fCoriG(I+1,J,bi,bj))*uBarXY |
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C full nonlinear Coriolis term |
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c & -0.5*(omega3(I,J)+omega3(I+1,J))*uBarXY |
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C correct energy conserving form of Coriolis term |
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c & -0.5 *( fCori(I,J ,bi,bj)*uBarX(I,J ,K,bi,bj) + |
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c & fCori(I,J-1,bi,bj)*uBarX(I,J-1,K,bi,bj) ) |
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C original form of Coriolis term (copied from calc_mom_rhs) |
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c & -0.5*(fCori(i,j,bi,bj)+fCori(i,j-1,bi,bj))*uBarXY |
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& *_maskS(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 |
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