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jmc |
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C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_v_del2v.F,v 1.6 2006/04/05 15:43:15 mlosch Exp $ |
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adcroft |
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C $Name: $ |
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adcroft |
1.2 |
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edhill |
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#include "MOM_FLUXFORM_OPTIONS.h" |
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adcroft |
1.2 |
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adcroft |
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CBOP |
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C !ROUTINE: MOM_V_DEL2V |
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C !INTERFACE: ========================================================== |
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SUBROUTINE MOM_V_DEL2V( |
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I bi,bj,k, |
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I vFld, hFacZ, |
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O del2v, |
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I myThid) |
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C !DESCRIPTION: |
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C Calculates the Laplacian of meridional flow |
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C !USES: =============================================================== |
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adcroft |
1.2 |
IMPLICIT NONE |
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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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adcroft |
1.3 |
C !INPUT PARAMETERS: =================================================== |
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C bi,bj :: tile indices |
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C k :: vertical level |
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C vFld :: meridional flow |
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C hFacZ :: fractional thickness at vorticity points |
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C myThid :: thread number` |
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adcroft |
1.2 |
INTEGER bi,bj,k |
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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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adcroft |
1.3 |
INTEGER myThid |
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C !OUTPUT PARAMETERS: ================================================== |
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C del2v :: Laplacian |
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adcroft |
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_RL del2v(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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adcroft |
1.3 |
C !LOCAL VARIABLES: ==================================================== |
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C i,j :: loop indices |
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adcroft |
1.2 |
INTEGER I,J |
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_RL fZon(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RL fMer(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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_RS hFacZClosedE,hFacZClosedW |
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adcroft |
1.3 |
CEOP |
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adcroft |
1.2 |
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C Zonal flux d/dx V |
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jmc |
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DO j=1-Oly+1,sNy+Oly-1 |
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adcroft |
1.2 |
DO i=1-Olx+1,sNx+Olx |
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fZon(i,j) = drF(k)*hFacZ(i,j) |
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& *_dyU(i,j,bi,bj) |
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& *_recip_dxV(i,j,bi,bj) |
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& *(vFld(i,j)-vFld(i-1,j)) |
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#ifdef COSINEMETH_III |
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jmc |
1.7 |
& *sqCosFacV(J,bi,bj) |
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adcroft |
1.2 |
#endif |
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jmc |
1.7 |
c & *deepFacC(k) ! dyU scaling factor |
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c & *recip_deepFacC(k) ! recip_dxV scaling factor |
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ENDDO |
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ENDDO |
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C Meridional flux d/dy V |
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DO j=1-Oly,sNy+Oly-1 |
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jmc |
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DO i=1-Olx+1,sNx+Olx-1 |
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adcroft |
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fMer(i,j) = drF(k)*_hFacC(i,j,k,bi,bj) |
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& *_dxF(i,j,bi,bj) |
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& *_recip_dyF(i,j,bi,bj) |
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& *(vFld(i,j+1)-vFld(i,j)) |
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mlosch |
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#if (defined (ISOTROPIC_COS_SCALING) && defined (COSINEMETH_III)) |
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jmc |
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& *sqCosFacU(J,bi,bj) |
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mlosch |
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#endif |
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jmc |
1.7 |
c & *deepFacC(k) ! dxF scaling factor |
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c & *recip_deepFacC(k) ! recip_dyF scaling factor |
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adcroft |
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ENDDO |
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ENDDO |
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jmc |
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C del^2 V |
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DO j=1-Oly+1,sNy+Oly-1 |
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DO i=1-Olx+1,sNx+Olx-1 |
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del2v(i,j) = |
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& recip_drF(k)*_recip_hFacS(i,j,k,bi,bj) |
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& *recip_rAs(i,j,bi,bj)*recip_deepFac2C(k) |
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& *( fZon(i+1,j) - fZon(i, j ) |
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& +fMer( i ,j) - fMer(i,j-1) |
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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 (no_slip_sides) THEN |
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C-- No-slip BCs impose a drag at walls... |
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jmc |
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DO j=1-Oly+1,sNy+Oly-1 |
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DO i=1-Olx+1,sNx+Olx-1 |
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1.2 |
hFacZClosedW = _hFacS(i,j,k,bi,bj) - hFacZ(i,j) |
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hFacZClosedE = _hFacS(i,j,k,bi,bj) - hFacZ(i+1,j) |
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del2v(i,j) = del2v(i,j) |
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& -_recip_hFacS(i,j,k,bi,bj)*recip_drF(k) |
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jmc |
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& *recip_rAs(i,j,bi,bj)*recip_deepFac2C(k) |
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& *( hFacZClosedW*dyU( i ,j,bi,bj) |
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& *_recip_dxV( i ,j,bi,bj) |
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& +hFacZClosedE*dyU(i+1,j,bi,bj) |
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& *_recip_dxV(i+1,j,bi,bj) |
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& )*drF(k)*2.*vFld(i,j) |
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jmc |
1.7 |
& *_maskS(i,j,k,bi,bj) |
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adcroft |
1.2 |
ENDDO |
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ENDDO |
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ENDIF |
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RETURN |
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END |
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