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C $Header: /u/gcmpack/MITgcm_contrib/darwin/pkg/gchem/gchem_calc_tendency.F,v 1.2 2008/02/26 17:13:11 jahn Exp $ |
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C $Name: $ |
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#include "GCHEM_OPTIONS.h" |
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CBOP |
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C !ROUTINE: GCHEM_CALC_TENDENCY |
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C !INTERFACE: ========================================================== |
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SUBROUTINE GCHEM_CALC_TENDENCY( |
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I myTime, myIter, myThid ) |
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C !DESCRIPTION: |
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C In the case of GCHEM_SEPARATE_FORCING not defined, |
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C this subroutine computes the tracer tendencies due to a |
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C bio-geogchemistry or ecosystem model and stores them on an array |
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C gchemTendency, that will be incorporated into regular timestepping in |
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C in ptracers_intergrate.F |
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C The current example uses the CFC package, but his is meant to |
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C be replaced by anything that the user provides. |
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C !USES: =============================================================== |
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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 "PTRACERS_SIZE.h" |
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#include "PTRACERS_PARAMS.h" |
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#include "PTRACERS_FIELDS.h" |
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#include "GCHEM.h" |
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#include "GCHEM_FIELDS.h" |
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C !INPUT PARAMETERS: =================================================== |
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C myThid :: thread number |
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C myIter :: current timestep |
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C myTime :: current time |
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INTEGER myThid, myIter |
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_RL myTime |
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#ifdef ALLOW_GCHEM |
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# ifndef GCHEM_SEPARATE_FORCING |
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C !LOCAL VARIABLES: ==================================================== |
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C i,j :: loop indices |
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C iTracer :: ptracer number |
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C bi,bj :: tile indices |
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C k :: vertical level |
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INTEGER i,j |
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INTEGER niter |
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INTEGER iTracer |
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INTEGER bi,bj,imin,imax,jmin,jmax,k |
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#ifdef ALLOW_CFC |
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INTEGER kLoc |
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_RL PtrLoc(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
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_RL gPtrLoc(1-Olx:sNx+Olx,1-Oly:sNy+Oly,Nr) |
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#endif /* ALLOW_CFC */ |
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CEOP |
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C gchemTendency is re-initialized here |
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DO iTracer = 1, PTRACERS_numInUse |
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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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gchemTendency(I,J,K,bi,bj,iTracer) = 0. _d 0 |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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C |
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C Here is the place for code to compute bio-geochemical |
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C tendency terms (sometimes referred to as source-minus-sink |
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C terms). The tendencies are stored on gchemTendency, as show |
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C in the CFC-example. |
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C |
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C loop over tiles |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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C define horizontal loop ranges |
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iMin = 1 |
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iMax = sNx |
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jMin = 1 |
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jMax = sNy |
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C DO iTracer = 1, PTRACER_NumInUse |
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C DO K = 1, Nr |
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C DO J = 1-Oly, sNy+Oly |
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C DO I = 1-Olx, sNx+Olx |
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C gchemTendency(I,J,K,bi,bj,iTracer) = your specific model |
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C ENDDO |
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C ENDDO |
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C ENDDO |
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C ENDDO |
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#ifdef ALLOW_CFC |
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ccccccccccccccccccccccccc |
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c chemical forcing c |
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ccccccccccccccccccccccccc |
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ccccccccccccccccccccccccccc CFC cccccccccccccccccccccccccccccccc |
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c |
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K = 1 |
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CALL CFC11_FORCING( Ptracer (1-Olx,1-Oly,1,bi,bj,1), |
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& gchemTendency(1-Olx,1-Oly,1,bi,bj,1), |
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& bi, bj, imin, imax, jmin, jmax, |
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& myIter, myTime, myThid ) |
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CALL CFC12_FORCING( Ptracer (1-Olx,1-Oly,1,bi,bj,2), |
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& gchemTendency(1-Olx,1-Oly,1,bi,bj,2), |
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& bi, bj, imin, imax, jmin, jmax, |
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& myIter, myTime, myThid ) |
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cccccccccccccccccccccccccc END CFC cccccccccccccccccccccccccccccccccc |
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#endif /* ALLOW_CFC */ |
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C end of tile-loops |
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ENDDO |
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ENDDO |
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# endif /* GCHEM_SEPARATE_FORCING */ |
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#endif /* ALLOW_GCHEM */ |
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RETURN |
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END |
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