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C $Header: /u/gcmpack/MITgcm/model/src/pressure_for_eos.F,v 1.6 2016/03/10 20:54:57 jmc 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: PRESSURE_FOR_EOS |
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C !INTERFACE: |
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SUBROUTINE PRESSURE_FOR_EOS( |
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I bi, bj, iMin, iMax, jMin, jMax, k, |
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O locPres, |
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I myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE PRESSURE_FOR_EOS |
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C | o Provide a local copy of the total pressure |
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C | at cell center (level k) for use in EOS funct. of P |
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C *==========================================================* |
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C \ev |
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C !USES: |
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IMPLICIT NONE |
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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 "PARAMS.h" |
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#include "GRID.h" |
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#include "DYNVARS.h" |
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#ifdef ALLOW_NONHYDROSTATIC |
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# include "NH_VARS.h" |
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#endif /* ALLOW_NONHYDROSTATIC */ |
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C bi,bj, k :: tile and level indices |
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C iMin,iMax,jMin,jMax :: computational domain |
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C myThid - Thread number for this instance of the routine. |
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INTEGER bi, bj, k |
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INTEGER iMin,iMax,jMin,jMax |
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_RL locPres(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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C == Local variables == |
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C i,j :: loop index |
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INTEGER i,j |
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CEOP |
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C |
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C provide the pressure for use in the equation of state |
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C |
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IF ( usingZCoords ) THEN |
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C in Z coordinates the pressure is rho0 * (hydrostatic) Potential |
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#ifdef ALLOW_NONHYDROSTATIC |
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IF ( selectP_inEOS_Zc.EQ.3 ) THEN |
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C- use full (hydrostatic+non-hydrostatic) dynamical pressure: |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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locPres(i,j) = rhoConst*( |
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& totPhiHyd(i,j,k,bi,bj) |
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& +( phi_nh(i,j,k,bi,bj) - dPhiNH(i,j,bi,bj) ) |
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& + phiRef(2*k) ) |
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c & *maskC(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ELSEIF ( selectP_inEOS_Zc.EQ.2 ) THEN |
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#else /* ALLOW_NONHYDROSTATIC */ |
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IF ( selectP_inEOS_Zc.EQ.2 ) THEN |
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#endif /* ALLOW_NONHYDROSTATIC */ |
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C- use hydrostatic dynamical pressure: |
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C---------- |
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C NOTE: For now, totPhiHyd only contains the Potential anomaly |
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C since PhiRef has not (yet) been added in S/R DIAGS_PHI_HYD |
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C---------- |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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locPres(i,j) = rhoConst*( |
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& totPhiHyd(i,j,k,bi,bj) |
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& + phiRef(2*k) ) |
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c & *maskC(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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c ELSEIF ( selectP_inEOS_Zc.EQ.1 ) THEN |
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C note: for the case selectP_inEOS_Zc=0, also use pRef4EOS (set to |
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C rhoConst*phiRef(2*k) ) to reproduce same previous machine truncation |
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ELSEIF ( selectP_inEOS_Zc.LE.1 ) THEN |
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C- use horizontally uniform reference pressure pRef |
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C (solution of: pRef = integral{-g*rho(Tref,Sref,pRef)*dz} ) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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locPres(i,j) = pRef4EOS(k) |
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c & *maskC(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- simplest case: -g*rhoConst*z |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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locPres(i,j) = rhoConst*phiRef(2*k) |
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c & *maskC(i,j,k,bi,bj) |
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ENDDO |
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ENDDO |
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ENDIF |
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ELSEIF ( usingPCoords ) THEN |
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C in P coordinates the pressure is just the coordinate of |
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C the tracer point |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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locPres(i,j) = rC(k) |
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c & * maskC(i,j,k,bi,bj) |
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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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