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snarayan |
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C $Header: /u/gcmpack/MITgcm/verification/hs94.1x64x5/code_oad/ini_theta.F,v 1.1 2013/06/21 17:36:32 heimbach Exp $ |
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C $Name: $ |
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_OPTIONS.h" |
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CBOP |
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C !ROUTINE: INI_THETA |
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C !INTERFACE: |
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SUBROUTINE INI_THETA( myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | SUBROUTINE INI_THETA |
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C | o Set model initial temperature field. |
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C *==========================================================* |
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C | There are several options for setting the initial |
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C | temperature file |
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C | 1. Inline code |
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C | 2. Vertical profile ( uniform T in X and Y ) |
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C | 3. Three-dimensional data from a file. For example from |
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C | Levitus or from a checkpoint file from a previous |
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C | integration. |
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C | In addition to setting the temperature field we also |
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C | set the initial temperature tendency term here. |
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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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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine arguments == |
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C myThid - Number of this instance of INI_THETA |
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INTEGER myThid |
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C == Functions == |
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c real*8 PORT_RAND |
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c real*8 seed |
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C !LOCAL VARIABLES: |
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C == Local variables == |
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C bi,bj - Loop counters |
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C I,J,K |
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INTEGER bi, bj |
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INTEGER I, J, K, localWarnings |
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_RL term1,term2,thetaLim,thetaEq |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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CEOP |
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J = 99+myBxLo(myThid)+nPx*myByLo(myThid) |
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c CALL SRAND( J ) |
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c seed = j |
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IF ( hydrogThetaFile .EQ. ' ' ) THEN |
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C-- Initialise temperature field to Held & Saurez equilibrium theta |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO K=1,Nr |
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thetaLim = 200. _d 0/((rC(K)/atm_po)**atm_kappa) |
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DO J=1,sNy |
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DO I=1,sNx |
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term1=60. _d 0*(sin(yC(I,J,bi,bj)*deg2rad)**2) |
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term2=10. _d 0*log((rC(K)/atm_po)) |
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& *(cos(yC(I,J,bi,bj)*deg2rad)**2) |
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thetaEq=315. _d 0-term1-term2 |
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theta(I,J,K,bi,bj) = MAX( thetaLim, thetaEq ) |
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c & + 0.01*(RAND()-0.5) |
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c & + 0.01*(PORT_RAND(seed)-0.5) |
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c theta(I,J,K,bi,bj) = tRef(K) |
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ENDDO |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_ZONAL_FILT |
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C-- Zonal FFT filter initial conditions |
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IF (useZONAL_FILT) THEN |
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CALL ZONAL_FILTER( |
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U theta(1-OLx,1-OLy,1,bi,bj), |
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I hFacC(1-OLx,1-OLy,1,bi,bj), |
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I 1, sNy, Nr, bi, bj, 1, myThid ) |
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ENDIF |
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#endif /* ALLOW_ZONAL_FILT */ |
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ENDDO |
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ENDDO |
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ELSE |
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CALL READ_FLD_XYZ_RL( hydrogThetaFile, ' ', theta, 0, myThid ) |
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ENDIF |
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C-- Apply mask and test consistency |
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localWarnings=0 |
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO K=1,Nr |
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DO J=1-Oly,sNy+Oly |
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DO I=1-Olx,sNx+Olx |
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IF (maskC(I,J,K,bi,bj).EQ.0.) theta(I,J,K,bi,bj) = 0. |
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ENDDO |
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ENDDO |
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IF ( tRef(k).NE.0. ) THEN |
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DO J=1,sNy |
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DO I=1,sNx |
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IF ( maskC(I,J,K,bi,bj).NE.0. |
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& .AND. theta(I,J,K,bi,bj).EQ.0. ) THEN |
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localWarnings=localWarnings+1 |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDIF |
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ENDDO |
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ENDDO |
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ENDDO |
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IF (localWarnings.NE.0) THEN |
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WRITE(msgBuf,'(A,A)') |
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& 'S/R INI_THETA: theta = 0 identically. If this is intentional', |
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& 'you will need to edit ini_theta.F to avoid this safety check' |
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CALL PRINT_ERROR( msgBuf , myThid) |
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STOP 'ABNORMAL END: S/R INI_THETA' |
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ENDIF |
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_EXCH_XYZ_RL(theta , myThid ) |
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IF (debugMode) THEN |
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CALL PLOT_FIELD_XYZRL( theta, 'Initial Temperature' , |
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& Nr, 1, myThid ) |
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ENDIF |
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RETURN |
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END |
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