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C $Header: /u/gcmpack/MITgcm/model/src/timestep_tracer.F,v 1.17 2011/12/13 15:12:53 mlosch Exp $ |
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C $Name: $ |
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|
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#include "PACKAGES_CONFIG.h" |
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#include "CPP_OPTIONS.h" |
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|
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CBOP |
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C !ROUTINE: TIMESTEP_TRACER |
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C !INTERFACE: |
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SUBROUTINE TIMESTEP_TRACER( |
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I bi, bj, deltaTLev, |
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I tracer, |
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U gTracer, |
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I myTime, myIter, myThid ) |
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C !DESCRIPTION: \bv |
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C *==========================================================* |
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C | S/R TIMESTEP_TRACER |
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C | o Step model tracer field forward in time |
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C *==========================================================* |
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C \ev |
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|
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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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|
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C !INPUT/OUTPUT PARAMETERS: |
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C == Routine Arguments == |
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C bi, bj :: current tile indices |
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C deltaTLev :: time-step [s] (vertical dimension vector) |
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C tracer :: tracer field |
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C gTracer :: input: tracer tendency ; output: updated tracer |
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C myTime :: current time in simulation |
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C myIter :: current iteration number |
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C myThid :: my Thread Id number |
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INTEGER bi, bj |
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_RL deltaTLev(Nr) |
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_RL tracer (1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
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_RL gTracer(1-OLx:sNx+OLx,1-OLy:sNy+OLy,Nr) |
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_RL myTime |
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INTEGER myIter, myThid |
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|
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C !LOCAL VARIABLES: |
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C == Local variables == |
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INTEGER i, j, k |
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CEOP |
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|
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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C- Step tracer forward in time and store provisional value in gTracer array |
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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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gTracer(i,j,k) = tracer(i,j,k) |
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& + deltaTLev(k)*gTracer(i,j,k) |
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#ifdef ALLOW_OBCS |
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CML For the Stevens open boundary conditions, we need to step forward |
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CML the tracer even on the boundary in order to include surface |
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CML forcing and (vertical) diffusion contributions. For other cases |
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CML this mask was meant to avoid unrealistic values on the open boundaries. |
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CML Lets hope that we can live without this safety net. |
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C & *maskInC(i,j,bi,bj) |
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#endif |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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RETURN |
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END |
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