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C $Header: /u/gcmpack/MITgcm/pkg/mom_fluxform/mom_u_adv_wu.F,v 1.3 2001/09/26 19:05:21 adcroft Exp $ |
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C $Name: $ |
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#include "CPP_OPTIONS.h" |
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C !ROUTINE: MOM_U_ADV_WU |
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C !INTERFACE: ========================================================== |
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SUBROUTINE MOM_U_ADV_WU( |
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I bi,bj,k, |
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I uFld,wFld, |
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O advectiveFluxWU, |
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I myThid) |
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C !DESCRIPTION: |
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C Calculates the vertical advective flux of zonal momentum: |
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C \begin{equation*} |
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C F^r = \overline{W}^i \overline{u}^{k} |
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C \end{equation*} |
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C !USES: =============================================================== |
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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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#ifdef NONLIN_FRSURF |
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#include "SURFACE.h" |
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#endif |
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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 rTrans :: vertical transport |
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C uFld :: zonal flow |
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C myThid :: thread number |
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INTEGER bi,bj,k |
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_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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_RL wFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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INTEGER myThid |
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C !OUTPUT PARAMETERS: ================================================== |
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C advectiveFluxWU :: advective flux |
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_RL advectiveFluxWU(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
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C !LOCAL VARIABLES: ==================================================== |
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C i,j :: loop indices |
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INTEGER I,J |
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#ifdef NONLIN_FRSURF |
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IF ( k.EQ.Nr+1 .AND. |
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& useRealFreshWaterFlux .AND. |
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& buoyancyRelation .EQ. 'OCEANICP' ) THEN |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx+1,sNx+Olx |
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advectiveFluxWU(i,j) = convertEmP2rUnit* |
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& ( PmEpR( i ,j,bi,bj)*rA( i ,j,bi,bj) |
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& +PmEpR(i-1,j,bi,bj)*rA(i-1,j,bi,bj) |
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& )*0.5 _d 0 * uFld(i,j,k-1,bi,bj) |
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ENDDO |
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ENDDO |
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ELSEIF ( k.GT.Nr .OR. (k.EQ.1.AND.rigidLid) ) THEN |
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#else /* NONLIN_FRSURF */ |
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IF ( k.GT.Nr .OR. |
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& (k.EQ.1.AND.rigidLid) ) THEN |
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#endif /* NONLIN_FRSURF */ |
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C Advective flux = 0 at k=Nr+1 ; = 0 at k=1 if rigid-lid |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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advectiveFluxWU(i,j) = 0. |
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ENDDO |
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ENDDO |
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ELSEIF (k.EQ.1) THEN |
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C (linear) Free-surface correction at k=1 |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx+1,sNx+Olx |
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advectiveFluxWU(i,j) = |
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& 0.5*( |
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& wFld( i ,j,k,bi,bj)*rA( i ,j,bi,bj) |
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& +wFld(i-1,j,k,bi,bj)*rA(i-1,j,bi,bj) |
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& )*uFld(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ELSE |
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C Vertical advection - interior ; assume uFld & wFld are masked |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx+1,sNx+Olx |
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advectiveFluxWU(i,j) = |
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& 0.25*( |
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& wFld( i ,j,k,bi,bj)*rA( i ,j,bi,bj) |
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& +wFld(i-1,j,k,bi,bj)*rA(i-1,j,bi,bj) |
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& )*( uFld(i,j,k,bi,bj)+uFld(i,j,k-1,bi,bj) ) |
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ENDDO |
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ENDDO |
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IF (.NOT. rigidLid) THEN |
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C (linear) Free-surface correction at k>1 |
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DO j=1-Oly,sNy+Oly |
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DO i=1-Olx+1,sNx+Olx |
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advectiveFluxWU(i,j) = advectiveFluxWU(i,j) |
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& +0.25*( |
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& wFld(i, j ,k,bi,bj)*rA(i, j ,bi,bj)* |
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& (maskC(i,j,k,bi,bj) - maskC(i,j,k-1,bi,bj)) |
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& +wFld(i-1,j,k,bi,bj)*rA(i-1,j,bi,bj)* |
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& (maskC(i-1,j,k,bi,bj)-maskC(i-1,j,k-1,bi,bj)) |
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& )*uFld(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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C- endif NOT rigidLid |
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ENDIF |
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ENDIF |
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RETURN |
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END |