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C $Header: /u/gcmpack/models/MITgcmUV/pkg/mom_fluxform/mom_v_metric_sphere.F,v 1.2 2001/05/29 14:01:38 adcroft Exp $ |
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C $Name: $ |
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#include "CPP_OPTIONS.h" |
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CBOP |
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C !ROUTINE: MOM_V_METRIC_SPHERE |
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C !INTERFACE: ========================================================== |
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SUBROUTINE MOM_V_METRIC_SPHERE( |
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I bi,bj,k, |
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I uFld, |
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O vMetricTerms, |
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I myThid) |
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C !DESCRIPTION: |
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C Calculates the meridional metric term due to sphericity: |
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C \begin{equation} |
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C \frac{1}{a} \overline{u}^{ij} \overline{u}^{ij} \tan{\phi} |
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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 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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INTEGER myThid |
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C !OUTPUT PARAMETERS: ================================================== |
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C vMetricTerms :: metric term |
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_RL vMetricTerms(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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CEOP |
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DO j=1-Olx+1,sNy+Oly |
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DO i=1-Olx,sNx+Olx-1 |
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vMetricTerms(i,j) = -recip_RSphere |
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& *0.25*( uFld(i,j )+uFld(i+1,j ) |
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& +uFld(i,j-1)+uFld(i+1,j-1) |
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& ) |
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& *0.25*( uFld(i,j )+uFld(i+1,j ) |
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& +uFld(i,j-1)+uFld(i+1,j-1) |
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& ) |
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& *_tanPhiAtV(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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RETURN |
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END |