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C $Header: /u/gcmpack/MITgcm/pkg/layers/layers_calc.F,v 1.1 2009/09/16 21:25:47 rpa Exp $ |
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C $Name: $ |
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#include "LAYERS_OPTIONS.h" |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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SUBROUTINE LAYERS_CALC( |
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I myTime, myIter, myThid ) |
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|
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C =================================================================== |
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C Calculate the transport in isopycnal layers. |
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C This is the meat of the LAYERS package. |
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C =================================================================== |
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|
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IMPLICIT NONE |
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#include "SIZE.h" |
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#include "GRID.h" |
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#include "DYNVARS.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "LAYERS_SIZE.h" |
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#include "LAYERS.h" |
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|
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C INPUT PARAMETERS: |
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C bi, bj - array indices on which to apply calculations |
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C myTime - Current time in simulati |
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C myThid :: my Thread Id number |
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INTEGER bi, bj, myTime, myIter, myThid |
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|
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#ifdef ALLOW_LAYERS |
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C === Local variables === |
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C i,j :: horizontal indices |
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C k :: vertical index for model grid |
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C kci :: index from CellIndex |
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C kg :: index for looping though layers_G |
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C kk :: vertical index for ZZ (fine) grid |
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C kgu,kgv :: vertical index for isopycnal grid |
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C TatV :: temperature at U point |
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C TatV :: temperature at V point |
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|
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INTEGER i,j,k,kk,kg,kci |
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INTEGER kgu(sNx+1,sNy+1), kgv(sNx+1,sNy+1) |
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_RL TatU, TatV |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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|
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C --- The thread loop |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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|
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C Initialize the serach indices |
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DO j = 1,sNy+1 |
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DO i = 1,sNx+1 |
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C The temperature index (layer_G) goes from cold to warm. |
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C The water column goes from warm (k=1) to cold (k=Nr). |
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C So initialize the search with the warmest value. |
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kgu(i,j) = Nlayers |
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kgv(i,j) = Nlayers |
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ENDDO |
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ENDDO |
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|
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C Reset the arrays |
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DO kg=1,Nlayers |
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DO j = 1,sNy+1 |
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DO i = 1,sNx+1 |
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#ifdef LAYERS_UFLUX |
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layers_UFlux(i,j,kg,bi,bj) = 0. _d 0 |
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#ifdef LAYERS_THICKNESS |
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layers_HU(i,j,kg,bi,bj) = 0. _d 0 |
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#endif /* LAYERS_THICKNESS */ |
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#endif /* LAYERS_UFLUX */ |
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#ifdef LAYERS_VFLUX |
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layers_VFlux(i,j,kg,bi,bj) = 0. _d 0 |
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#ifdef LAYERS_THICKNESS |
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layers_HV(i,j,kg,bi,bj) = 0. _d 0 |
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#endif /* LAYERS_THICKNESS */ |
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#endif /* LAYERS_VFLUX */ |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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C _RL theta(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr,nSx,nSy) |
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C Sometimes it is done this way |
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C DO j=1-Oly+1,sNy+Oly-1 |
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C DO i=1-Olx+1,sNx+Olx-1 |
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DO kk=1,NZZ |
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k = MapIndex(kk) |
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kci = CellIndex(kk) |
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DO j = 1,sNy+1 |
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DO i = 1,sNx+1 |
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|
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#ifdef LAYERS_UFLUX |
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C ------ Find theta at the U point (west) on the fine Z grid |
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TatU = MapFact(kk) * |
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& 0.5 _d 0 * (theta(i-1,j,k,bi,bj)+theta(i,j,k,bi,bj)) + |
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& (1-MapFact(kk)) * |
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& 0.5 _d 0 * (theta(i-1,j,k+1,bi,bj)+theta(i,j,k+1,bi,bj)) |
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|
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C ------ Now that we know T everywhere, determine the binning. |
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|
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IF (TatU .GE. layers_G(Nlayers)) THEN |
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C the point is in the hottest bin or hotter |
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kgu(i,j) = Nlayers |
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ELSE IF (TatU .LT. layers_G(2)) THEN |
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C the point is in the coldest bin or colder |
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kgu(i,j) = 1 |
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ELSE IF ( (TatU .GE. layers_G(kgu(i,j))) |
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& .AND. (TatU .LT. layers_G(kgu(i,j)+1)) ) THEN |
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C already on the right bin -- do nothing |
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ELSE IF (TatU .GE. layers_G(kgu(i,j))) THEN |
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C have to hunt for the right bin by getting hotter |
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DO WHILE (TatU .GE. layers_G(kgu(i,j)+1)) |
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kgu(i,j) = kgu(i,j) + 1 |
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ENDDO |
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C now layers_G(kgu(i,j)+1) < TatU <= layers_G(kgu(i,j)+1) |
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ELSE IF (TatU .LT. layers_G(kgu(i,j)+1)) THEN |
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C have to hunt for the right bin by getting colder |
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DO WHILE (TatU .LT. layers_G(kgu(i,j))) |
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kgu(i,j) = kgu(i,j) - 1 |
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ENDDO |
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C now layers_G(kgu(i,j)+1) <= TatU < layers_G(kgu(i,j)+1) |
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ELSE |
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C that should have covered all the options |
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WRITE(msgBuf,'(A,1E14.6)') |
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& 'S/R LAYERS_CALC: Couldnt find a bin in layers_G for TatU=', |
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& TatU |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R LAYERS_INIT_FIXED' |
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END IF |
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|
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C ------ Augment the bin values |
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layers_UFlux(i,j,kgu(i,j),bi,bj) = |
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& layers_UFlux(i,j,kgu(i,j),bi,bj) + |
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& dZZf(kk) * uVel(i,j,kci,bi,bj) * hFacW(i,j,kci,bi,bj) |
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|
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#ifdef LAYERS_THICKNESS |
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layers_HU(i,j,kgu(i,j),bi,bj) = layers_HU(i,j,kgu(i,j),bi,bj) |
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& + dZZf(kk) * hFacW(i,j,kci,bi,bj) |
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#endif /* LAYERS_THICKNESS */ |
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|
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#endif /* LAYERS_UFLUX */ |
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|
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#ifdef LAYERS_VFLUX |
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C ------ Find theta at the V point (south) on the fine Z grid |
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TatV = MapFact(kk) * |
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& 0.5 _d 0 * (theta(i,j-1,k,bi,bj)+theta(i,j,k,bi,bj)) + |
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& (1-MapFact(kk)) * |
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& 0.5 _d 0 * (theta(i,j-1,k+1,bi,bj)+theta(i,j,k+1,bi,bj)) |
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|
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C ------ Now that we know T everywhere, determine the binning |
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IF (TatV .GE. layers_G(Nlayers)) THEN |
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C the point is in the hottest bin or hotter |
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kgv(i,j) = Nlayers |
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ELSE IF (TatV .LT. layers_G(2)) THEN |
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C the point is in the coldest bin or colder |
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kgv(i,j) = 1 |
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ELSE IF ( (TatV .GE. layers_G(kgv(i,j))) |
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& .AND. (TatV .LT. layers_G(kgv(i,j)+1)) ) THEN |
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C already on the right bin -- do nothing |
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ELSE IF (TatV .GE. layers_G(kgv(i,j))) THEN |
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C have to hunt for the right bin by getting hotter |
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DO WHILE (TatV .GE. layers_G(kgv(i,j)+1)) |
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kgv(i,j) = kgv(i,j) + 1 |
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ENDDO |
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C now layers_G(kgv(i,j)+1) < TatV <= layers_G(kgv(i,j)+1) |
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ELSE IF (TatV .LT. layers_G(kgv(i,j)+1)) THEN |
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C have to hunt for the right bin by getting colder |
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DO WHILE (TatV .LT. layers_G(kgv(i,j))) |
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kgv(i,j) = kgv(i,j) - 1 |
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ENDDO |
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C now layers_G(kgv(i,j)+1) <= TatV < layers_G(kgv(i,j)+1) |
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ELSE |
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C that should have covered all the options |
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WRITE(msgBuf,'(A,1E14.6)') |
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& 'S/R LAYERS_CALC: Couldnt find a bin in layers_G for TatV=', |
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& TatV |
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CALL PRINT_ERROR( msgBuf, myThid ) |
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STOP 'ABNORMAL END: S/R LAYERS_INIT_FIXED' |
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END IF |
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|
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C ------ Augment the bin values |
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layers_VFlux(i,j,kgv(i,j),bi,bj) = |
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& layers_VFlux(i,j,kgv(i,j),bi,bj) |
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& + dZZf(kk) * vVel(i,j,kci,bi,bj) * hFacS(i,j,kci,bi,bj) |
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|
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#ifdef LAYERS_THICKNESS |
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layers_HV(i,j,kgv(i,j),bi,bj) = layers_HV(i,j,kgv(i,j),bi,bj) |
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& + dZZf(kk) * hFacS(i,j,kci,bi,bj) |
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#endif /* LAYERS_THICKNESS */ |
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|
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#endif /* LAYERS_VFLUX */ |
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|
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ENDDO |
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ENDDO |
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ENDDO |
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#ifdef ALLOW_TIMEAVE |
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C-- Time-average |
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IF ( taveFreq.GT.0. ) THEN |
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|
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#ifdef LAYERS_UFLUX |
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CALL TIMEAVE_CUMULATE( layers_UFlux_T, layers_UFlux, Nlayers, |
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& deltaTclock, bi, bj, myThid ) |
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#ifdef LAYERS_THICKNESS |
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CALL TIMEAVE_CUMULATE( layers_HU_T, layers_HU, Nlayers, |
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& deltaTclock, bi, bj, myThid ) |
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#endif /* LAYERS_THICKNESS */ |
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#endif /* LAYERS_UFLUX */ |
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#ifdef LAYERS_VFLUX |
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CALL TIMEAVE_CUMULATE( layers_VFlux_T, layers_VFlux, Nlayers, |
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& deltaTclock, bi, bj, myThid ) |
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#ifdef LAYERS_THICKNESS |
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CALL TIMEAVE_CUMULATE( layers_HV_T, layers_HV, Nlayers, |
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& deltaTclock, bi, bj, myThid ) |
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#endif /* LAYERS_THICKNESS */ |
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#endif /* LAYERS_VFLUX */ |
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|
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DO kg=1,Nlayers |
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layers_TimeAve(kg,bi,bj)=layers_TimeAve(kg,bi,bj)+deltaTclock |
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ENDDO |
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ENDIF |
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#endif /* ALLOW_TIMEAVE */ |
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C --- End bi,bj loop |
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ENDDO |
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ENDDO |
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|
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#endif /* ALLOW_LAYERS */ |
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|
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RETURN |
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END |
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