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C $Header: /u/gcmpack/MITgcm/model/src/forward_step.F,v 1.62 2003/10/06 20:37:30 stephd Exp $ |
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C $Name: $ |
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|
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#include "CPP_OPTIONS.h" |
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cswdptr -- add -- |
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#ifdef ALLOW_GCHEM |
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# include "GCHEM_OPTIONS.h" |
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#endif |
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cswdptr -- end add --- |
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|
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CBOP |
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C !ROUTINE: FORWARD_STEP |
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C !INTERFACE: |
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SUBROUTINE FORWARD_STEP( iloop, myTime, myIter, myThid ) |
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|
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C !DESCRIPTION: \bv |
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C *================================================================== |
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C | SUBROUTINE forward_step |
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C | o Run the ocean model and, optionally, evaluate a cost function. |
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C *================================================================== |
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C | |
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C | THE_MAIN_LOOP is the toplevel routine for the Tangent Linear and |
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C | Adjoint Model Compiler (TAMC). For this purpose the initialization |
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C | of the model was split into two parts. Those parameters that do |
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C | not depend on a specific model run are set in INITIALISE_FIXED, |
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C | whereas those that do depend on the specific realization are |
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C | initialized in INITIALISE_VARIA. |
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C | |
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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 "DYNVARS.h" |
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#include "FFIELDS.h" |
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|
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#ifdef ALLOW_NONHYDROSTATIC |
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#include "CG3D.h" |
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#endif |
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|
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#ifdef ALLOW_SHAP_FILT |
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#include "SHAP_FILT.h" |
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#endif |
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#ifdef ALLOW_ZONAL_FILT |
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#include "ZONAL_FILT.h" |
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#endif |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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# include "tamc.h" |
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# include "ctrl.h" |
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# include "ctrl_dummy.h" |
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# include "cost.h" |
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# include "EOS.h" |
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# ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE |
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# include "exf_fields.h" |
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# ifdef ALLOW_BULKFORMULAE |
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# include "exf_constants.h" |
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# endif |
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# endif |
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# ifdef ALLOW_OBCS |
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# include "OBCS.h" |
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# endif |
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# ifdef ALLOW_PTRACERS |
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# include "PTRACERS.h" |
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# endif |
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#endif /* ALLOW_AUTODIFF_TAMC */ |
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|
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C !LOCAL VARIABLES: |
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C == Routine arguments == |
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C note: under the multi-threaded model myiter and |
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C mytime are local variables passed around as routine |
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C arguments. Although this is fiddly it saves the need to |
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C impose additional synchronisation points when they are |
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C updated. |
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C myiter - iteration counter for this thread |
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C mytime - time counter for this thread |
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C mythid - thread number for this instance of the routine. |
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integer iloop |
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integer mythid |
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integer myiter |
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_RL mytime |
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#ifdef ALLOW_BULK_FORCE |
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INTEGER bi,bj |
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#endif |
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|
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CEOP |
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|
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_ENTER('FORWARD_STEP',myThid) |
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#endif |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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C-- Reset the model iteration counter and the model time. |
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myiter = nIter0 + (iloop-1) |
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mytime = startTime + float(iloop-1)*deltaTclock |
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#endif |
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|
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#if (defined (ALLOW_AUTODIFF_TAMC) && defined (ALLOW_AUTODIFF_MONITOR)) |
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C Include call to a dummy routine. Its adjoint will be |
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C called at the proper place in the adjoint code. |
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C The adjoint routine will print out adjoint values |
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C if requested. The location of the call is important, |
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C it has to be after the adjoint of the exchanges |
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C (DO_GTERM_BLOCKING_EXCHANGES). |
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CALL DUMMY_IN_STEPPING( myTime, myIter, myThid ) |
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cph I've commented this line since it may conflict with MITgcm's adjoint |
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cph However, need to check whether that's still consistent |
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cph with the ecco-branch (it should). |
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cph CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid ) |
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#endif |
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|
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#ifdef EXACT_CONSERV |
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IF (exactConserv) THEN |
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C-- Update etaH(n+1) : |
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CALL TIMER_START('UPDATE_ETAH [FORWARD_STEP]',mythid) |
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CALL UPDATE_ETAH( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('UPDATE_ETAH [FORWARD_STEP]',mythid) |
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ENDIF |
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#endif /* EXACT_CONSERV */ |
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|
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#ifdef NONLIN_FRSURF |
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IF ( select_rStar.NE.0 ) THEN |
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C-- r* : compute the future level thickness according to etaH(n+1) |
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CALL TIMER_START('CALC_R_STAR [FORWARD_STEP]',mythid) |
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CALL CALC_R_STAR(etaH, myTime, myIter, myThid ) |
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CALL TIMER_STOP ('CALC_R_STAR [FORWARD_STEP]',mythid) |
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ELSEIF ( nonlinFreeSurf.GT.0) THEN |
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C-- compute the future surface level thickness according to etaH(n+1) |
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CALL TIMER_START('CALC_SURF_DR [FORWARD_STEP]',mythid) |
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CALL CALC_SURF_DR(etaH, myTime, myIter, myThid ) |
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CALL TIMER_STOP ('CALC_SURF_DR [FORWARD_STEP]',mythid) |
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ENDIF |
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#endif /* NONLIN_FRSURF */ |
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|
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C-- Load forcing/external data fields. |
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#ifdef ALLOW_AUTODIFF_TAMC |
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c************************************** |
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#include "checkpoint_lev1_directives.h" |
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c************************************** |
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#endif |
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|
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|
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C-- Call external forcing package |
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#ifdef ALLOW_BULK_FORCE |
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#ifndef DISABLE_DEBUGMODE |
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IF ( useBulkforce ) THEN |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('BULKF_FIELDS_LOAD',myThid) |
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#endif |
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CALL TIMER_START('BULKF_FIELDS_LOAD[THE_MAIN_LOOP]',mythid) |
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CALL BULKF_FIELDS_LOAD( mytime, myiter, mythid ) |
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CALL TIMER_STOP ('BULKF_FIELDS_LOAD[THE_MAIN_LOOP]',mythid) |
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c calculate qnet and empmr (and wind stress) |
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DO bj=myByLo(myThid),myByHi(myThid) |
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DO bi=myBxLo(myThid),myBxHi(myThid) |
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CALL BULKF_FORCING( bi,bj, mytime, myiter, mythid ) |
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ENDDO |
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ENDDO |
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c Update the tile edges. |
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_EXCH_XY_R8(Qnet, mythid) |
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_EXCH_XY_R8(EmPmR, mythid) |
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CALL EXCH_UV_XY_RS(fu, fv, .TRUE., myThid) |
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C _EXCH_XY_R8(fu , mythid) |
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C _EXCH_XY_R8(fv , mythid) |
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ELSE |
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#endif /* ALLOW_BULK_FORCE */ |
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|
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# ifdef INCLUDE_EXTERNAL_FORCING_PACKAGE |
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C NOTE, that although the exf package is part of the |
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C distribution, it is not currently maintained, i.e. |
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C exf is disabled by default in genmake. |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('EXF_GETFORCING',myThid) |
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#endif |
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CALL TIMER_START('EXF_GETFORCING [FORWARD_STEP]',mythid) |
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CALL EXF_GETFORCING( mytime, myiter, mythid ) |
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CALL TIMER_STOP ('EXF_GETFORCING [FORWARD_STEP]',mythid) |
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# else /* INCLUDE_EXTERNAL_FORCING_PACKAGE undef */ |
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cph The following IF-statement creates an additional dependency |
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cph for the forcing fields requiring additional storing. |
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cph Therefore, the IF-statement will be put between CPP-OPTIONS, |
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cph assuming that ALLOW_SEAICE has not yet been differentiated. |
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# ifdef ALLOW_SEAICE |
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IF ( .NOT. useSEAICE ) THEN |
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# endif |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('EXTERNAL_FIELDS_LOAD',myThid) |
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#endif |
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CALL TIMER_START('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid) |
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CALL EXTERNAL_FIELDS_LOAD( mytime, myiter, mythid ) |
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CALL TIMER_STOP ('EXTERNAL_FIELDS_LOAD[FORWARD_STEP]',mythid) |
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# ifdef ALLOW_SEAICE |
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ENDIF |
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# endif |
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# endif /* INCLUDE_EXTERNAL_FORCING_PACKAGE */ |
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#ifdef ALLOW_BULK_FORCE |
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C-- end of if/else block useBulfforce -- |
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ENDIF |
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#endif /* ALLOW_BULK_FORCE */ |
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|
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#if (defined (ALLOW_ADJOINT_RUN) || defined (ALLOW_TANGENTLINEAR_RUN)) |
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c-- Add control vector for forcing and parameter fields |
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if ( myiter .EQ. nIter0 ) |
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& CALL CTRL_MAP_FORCING (mythid) |
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#endif |
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|
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# ifdef ALLOW_SEAICE |
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C-- Call sea ice model to compute forcing/external data fields. In |
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C addition to computing prognostic sea-ice variables and diagnosing the |
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C forcing/external data fields that drive the ocean model, SEAICE_MODEL |
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C also sets theta to the freezing point under sea-ice. The implied |
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C surface heat flux is then stored in variable surfaceTendencyTice, |
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C which is needed by KPP package (kpp_calc.F and kpp_transport_t.F) |
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C to diagnose surface buoyancy fluxes and for the non-local transport |
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C term. Because this call precedes model thermodynamics, temperature |
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C under sea-ice may not be "exactly" at the freezing point by the time |
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C theta is dumped or time-averaged. |
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IF ( useSEAICE ) THEN |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('SEAICE_MODEL',myThid) |
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#endif |
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CALL TIMER_START('SEAICE_MODEL [FORWARD_STEP]',myThid) |
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CALL SEAICE_MODEL( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('SEAICE_MODEL [FORWARD_STEP]',myThid) |
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ENDIF |
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# endif /* ALLOW_SEAICE */ |
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|
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#ifdef ALLOW_AUTODIFF_TAMC |
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# ifdef ALLOW_PTRACERS |
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cph this replaces _bibj storing of ptracer within thermodynamics |
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CADJ STORE ptracer = comlev1, key = ikey_dynamics |
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# endif |
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#endif |
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|
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#ifdef ALLOW_PTRACERS |
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# ifdef ALLOW_GCHEM |
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CALL GCHEM_FIELDS_LOAD( mytime, myiter, mythid ) |
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# endif |
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#endif |
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|
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C-- Step forward fields and calculate time tendency terms. |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('THERMODYNAMICS',myThid) |
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#endif |
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CALL TIMER_START('THERMODYNAMICS [FORWARD_STEP]',mythid) |
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CALL THERMODYNAMICS( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('THERMODYNAMICS [FORWARD_STEP]',mythid) |
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|
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C-- do exchanges (needed for DYNAMICS) when using stagger time-step : |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('DO_STAGGER_FIELDS_EXCH.',myThid) |
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#endif |
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CALL TIMER_START('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
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CALL DO_STAGGER_FIELDS_EXCHANGES( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
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|
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#ifdef ALLOW_SHAP_FILT |
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IF (useSHAP_FILT .AND. |
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& staggerTimeStep .AND. shap_filt_TrStagg ) THEN |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('SHAP_FILT_APPLY_TS',myThid) |
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#endif |
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CALL TIMER_START('SHAP_FILT [FORWARD_STEP]',myThid) |
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CALL SHAP_FILT_APPLY_TS(gT,gS,myTime+deltaT,myIter+1,myThid) |
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CALL TIMER_STOP ('SHAP_FILT [FORWARD_STEP]',myThid) |
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ENDIF |
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#endif |
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#ifdef ALLOW_ZONAL_FILT |
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IF (useZONAL_FILT .AND. |
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& staggerTimeStep .AND. zonal_filt_TrStagg ) THEN |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('ZONAL_FILT_APPLY_TS',myThid) |
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#endif |
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CALL TIMER_START('ZONAL_FILT_APPLY [FORWARD_STEP]',myThid) |
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CALL ZONAL_FILT_APPLY_TS( gT, gS, myThid ) |
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CALL TIMER_STOP ('ZONAL_FILT_APPLY [FORWARD_STEP]',myThid) |
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ENDIF |
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#endif |
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|
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C-- Step forward fields and calculate time tendency terms. |
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#ifndef ALLOW_AUTODIFF_TAMC |
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IF ( momStepping ) THEN |
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#endif |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('DYNAMICS',myThid) |
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#endif |
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CALL TIMER_START('DYNAMICS [FORWARD_STEP]',mythid) |
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CALL DYNAMICS( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('DYNAMICS [FORWARD_STEP]',mythid) |
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#ifndef ALLOW_AUTODIFF_TAMC |
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ENDIF |
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#endif |
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|
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#ifdef ALLOW_NONHYDROSTATIC |
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C-- Step forward W field in N-H algorithm |
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IF ( momStepping .AND. nonHydrostatic ) THEN |
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#ifndef DISABLE_DEBUGMODE |
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IF ( debugLevel .GE. debLevB ) |
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& CALL DEBUG_CALL('CALC_GW',myThid) |
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#endif |
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CALL TIMER_START('CALC_GW [FORWARD_STEP]',myThid) |
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CALL CALC_GW(myThid) |
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CALL TIMER_STOP ('CALC_GW [FORWARD_STEP]',myThid) |
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ENDIF |
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#endif |
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|
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#ifdef NONLIN_FRSURF |
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C-- update hfacC,W,S and recip_hFac according to etaH(n+1) : |
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IF ( nonlinFreeSurf.GT.0) THEN |
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IF ( select_rStar.GT.0 ) THEN |
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CALL TIMER_START('UPDATE_R_STAR [FORWARD_STEP]',myThid) |
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CALL UPDATE_R_STAR( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('UPDATE_R_STAR [FORWARD_STEP]',myThid) |
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ELSE |
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CALL TIMER_START('UPDATE_SURF_DR [FORWARD_STEP]',myThid) |
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CALL UPDATE_SURF_DR( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('UPDATE_SURF_DR [FORWARD_STEP]',myThid) |
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ENDIF |
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ENDIF |
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C- update also CG2D matrix (and preconditioner) |
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IF ( momStepping .AND. nonlinFreeSurf.GT.2 ) THEN |
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CALL TIMER_START('UPDATE_CG2D [FORWARD_STEP]',myThid) |
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CALL UPDATE_CG2D( myTime, myIter, myThid ) |
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CALL TIMER_STOP ('UPDATE_CG2D [FORWARD_STEP]',myThid) |
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ENDIF |
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#endif |
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|
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C-- Apply Filters to u*,v* before SOLVE_FOR_PRESSURE |
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#ifdef ALLOW_SHAP_FILT |
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IF (useSHAP_FILT .AND. shap_filt_uvStar) THEN |
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CALL TIMER_START('SHAP_FILT [FORWARD_STEP]',myThid) |
| 345 |
IF (implicDiv2Dflow.LT.1.) THEN |
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C-- Explicit+Implicit part of the Barotropic Flow Divergence |
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C => Filtering of uVel,vVel is necessary |
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CALL SHAP_FILT_APPLY_UV( uVel,vVel, |
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& myTime+deltaT, myIter+1, myThid ) |
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ENDIF |
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CALL SHAP_FILT_APPLY_UV( gU,gV,myTime+deltaT,myIter+1,myThid) |
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CALL TIMER_STOP ('SHAP_FILT [FORWARD_STEP]',myThid) |
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ENDIF |
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#endif |
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#ifdef ALLOW_ZONAL_FILT |
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IF (useZONAL_FILT .AND. zonal_filt_uvStar) THEN |
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CALL TIMER_START('ZONAL_FILT_APPLY [FORWARD_STEP]',myThid) |
| 358 |
IF (implicDiv2Dflow.LT.1.) THEN |
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C-- Explicit+Implicit part of the Barotropic Flow Divergence |
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C => Filtering of uVel,vVel is necessary |
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CALL ZONAL_FILT_APPLY_UV( uVel, vVel, myThid ) |
| 362 |
ENDIF |
| 363 |
CALL ZONAL_FILT_APPLY_UV( gU, gV, myThid ) |
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CALL TIMER_STOP ('ZONAL_FILT_APPLY [FORWARD_STEP]',myThid) |
| 365 |
ENDIF |
| 366 |
#endif |
| 367 |
|
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C-- Solve elliptic equation(s). |
| 369 |
C Two-dimensional only for conventional hydrostatic or |
| 370 |
C three-dimensional for non-hydrostatic and/or IGW scheme. |
| 371 |
IF ( momStepping ) THEN |
| 372 |
CALL TIMER_START('SOLVE_FOR_PRESSURE [FORWARD_STEP]',myThid) |
| 373 |
CALL SOLVE_FOR_PRESSURE(myTime, myIter, myThid) |
| 374 |
CALL TIMER_STOP ('SOLVE_FOR_PRESSURE [FORWARD_STEP]',myThid) |
| 375 |
ENDIF |
| 376 |
|
| 377 |
#ifdef ALLOW_AUTODIFF_TAMC |
| 378 |
cph This is needed because convective_adjustment calls |
| 379 |
cph find_rho which may use pressure() |
| 380 |
CADJ STORE totphihyd = comlev1, key = ikey_dynamics |
| 381 |
#endif |
| 382 |
C-- Correct divergence in flow field and cycle time-stepping |
| 383 |
C arrays (for all fields) ; update time-counter |
| 384 |
myIter = nIter0 + iLoop |
| 385 |
myTime = startTime + deltaTClock * float(iLoop) |
| 386 |
CALL TIMER_START('THE_CORRECTION_STEP [FORWARD_STEP]',myThid) |
| 387 |
CALL THE_CORRECTION_STEP(myTime, myIter, myThid) |
| 388 |
CALL TIMER_STOP ('THE_CORRECTION_STEP [FORWARD_STEP]',myThid) |
| 389 |
|
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C-- Do "blocking" sends and receives for tendency "overlap" terms |
| 391 |
c CALL TIMER_START('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
| 392 |
c CALL DO_GTERM_BLOCKING_EXCHANGES( myThid ) |
| 393 |
c CALL TIMER_STOP ('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
| 394 |
|
| 395 |
C-- Do "blocking" sends and receives for field "overlap" terms |
| 396 |
CALL TIMER_START('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
| 397 |
CALL DO_FIELDS_BLOCKING_EXCHANGES( myThid ) |
| 398 |
CALL TIMER_STOP ('BLOCKING_EXCHANGES [FORWARD_STEP]',myThid) |
| 399 |
|
| 400 |
cswdptr -- add for seperate timestepping of chemical/biological/forcing |
| 401 |
cswdptr of ptracers --- |
| 402 |
#ifdef ALLOW_GCHEM |
| 403 |
#ifdef PTRACERS_SEPARATE_FORCING |
| 404 |
call GCHEM_FORCING_SEP( myTime,myIter,myThid ) |
| 405 |
#endif |
| 406 |
#endif |
| 407 |
cswdptr -- end add --- |
| 408 |
|
| 409 |
|
| 410 |
#ifdef ALLOW_FLT |
| 411 |
C-- Calculate float trajectories |
| 412 |
IF (useFLT) THEN |
| 413 |
CALL TIMER_START('FLOATS [FORWARD_STEP]',myThid) |
| 414 |
CALL FLT_MAIN(myIter,myTime, myThid) |
| 415 |
CALL TIMER_STOP ('FLOATS [FORWARD_STEP]',myThid) |
| 416 |
ENDIF |
| 417 |
#endif |
| 418 |
|
| 419 |
#ifndef EXCLUDE_MONITOR |
| 420 |
C-- Check status of solution (statistics, cfl, etc...) |
| 421 |
CALL TIMER_START('MONITOR [FORWARD_STEP]',myThid) |
| 422 |
CALL MONITOR( myIter, myTime, myThid ) |
| 423 |
CALL TIMER_STOP ('MONITOR [FORWARD_STEP]',myThid) |
| 424 |
#endif /* EXCLUDE_MONITOR */ |
| 425 |
|
| 426 |
C-- Do IO if needed. |
| 427 |
CALL TIMER_START('DO_THE_MODEL_IO [FORWARD_STEP]',myThid) |
| 428 |
CALL DO_THE_MODEL_IO( myTime, myIter, myThid ) |
| 429 |
CALL TIMER_STOP ('DO_THE_MODEL_IO [FORWARD_STEP]',myThid) |
| 430 |
|
| 431 |
C-- Save state for restarts |
| 432 |
C Note: (jmc: is it still the case after ckp35 ?) |
| 433 |
C ===== |
| 434 |
C Because of the ordering of the timestepping code and |
| 435 |
C tendency term code at end of loop model arrays hold |
| 436 |
C U,V,T,S at "time-level" N but gu, gv, gs, gt, guNM1,... |
| 437 |
C at "time-level" N+1/2 (guNM1 at "time-level" N+1/2 is |
| 438 |
C gu at "time-level" N-1/2) and etaN at "time-level" N+1/2. |
| 439 |
C where N = I+timeLevBase-1 |
| 440 |
C Thus a checkpoint contains U.0000000000, GU.0000000001 and |
| 441 |
C etaN.0000000001 in the indexing scheme used for the model |
| 442 |
C "state" files. This example is referred to as a checkpoint |
| 443 |
C at time level 1 |
| 444 |
CALL TIMER_START('WRITE_CHECKPOINT [FORWARD_STEP]',myThid) |
| 445 |
CALL WRITE_CHECKPOINT( |
| 446 |
& .FALSE., myTime, myIter, myThid ) |
| 447 |
CALL TIMER_STOP ('WRITE_CHECKPOINT [FORWARD_STEP]',myThid) |
| 448 |
|
| 449 |
#ifndef DISABLE_DEBUGMODE |
| 450 |
IF ( debugLevel .GE. debLevB ) |
| 451 |
& CALL DEBUG_LEAVE('FORWARD_STEP',myThid) |
| 452 |
#endif |
| 453 |
|
| 454 |
END |
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