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C $Header: /u/gcmpack/MITgcm/pkg/mom_common/mom_u_metric_nh.F,v 1.2 2006/12/05 05:27:38 jmc Exp $ |
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jmc |
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C $Name: $ |
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#include "MOM_COMMON_OPTIONS.h" |
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CBOP |
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C !ROUTINE: MOM_U_METRIC_NH |
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C !INTERFACE: ========================================================== |
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SUBROUTINE MOM_U_METRIC_NH( |
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I bi,bj,k, |
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I uFld, wFld, |
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O uMetricTerms, |
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I myThid ) |
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C !DESCRIPTION: |
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C Calculates the zonal metric term due to non-hydrostaticity on the sphere: |
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C \begin{equation} |
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C -\frac{u}{a} \overline{w}^{ik} |
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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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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 uFld :: zonal flow |
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C wFld :: vertical 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) |
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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 uMetricTerms :: metric term |
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_RL uMetricTerms(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,kp1 |
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_RL wVelBottomOverride |
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CEOP |
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kp1=min(k+1,Nr) |
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wVelBottomOverride=1. |
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IF (k.EQ.Nr) wVelBottomOverride=0. |
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DO j=1-Olx,sNy+Oly |
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DO i=1-Olx+1,sNx+Olx |
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uMetricTerms(i,j) = uFld(i,j)*recip_rSphere*recip_deepFacC(k) |
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& *0.25*( (wFld(i-1,j,kp1,bi,bj)+wFld(i,j,kp1,bi,bj)) |
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& *rVel2wUnit(kp1)*wVelBottomOverride |
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& + (wFld(i-1,j, k ,bi,bj)+wFld(i,j, k ,bi,bj)) |
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& *rVel2wUnit( k ) |
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& )*gravitySign |
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ENDDO |
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ENDDO |
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RETURN |
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END |