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C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_fields_load.F,v 1.5 2015/09/02 12:07:29 dgoldberg Exp $ |
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C $Name: $ |
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#include "SHELFICE_OPTIONS.h" |
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CStartOfInterface |
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SUBROUTINE SHELFICE_FIELDS_LOAD( |
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I myTime, myIter, myThid ) |
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C *==========================================================* |
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C | SUBROUTINE SHELFICE_LOAD |
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C | o Control reading of SHELFICE fields from external source. |
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C *==========================================================* |
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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 "SHELFICE.h" |
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C === Routine arguments === |
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C myTime :: Simulation time |
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C myIter :: Simulation timestep number |
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C myThid :: Thread no. that called this routine. |
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_RL myTime |
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INTEGER myIter |
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INTEGER myThid |
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CEndOfInterface |
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C === Functions === |
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#ifdef ALLOW_SHELFICE |
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C === Local variables === |
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C bi,bj, i,j :: Loop counters |
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C tYear :: Fraction within year of myTime |
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C mnthIndex :: Current time in whole months |
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C prevMnthIndex |
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C fNam :: Strings used in constructing file names |
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C mnthNam |
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C loadNewData :: true when need to load new data from file |
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INTEGER bi,bj,i,j |
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c _RL pfact |
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LOGICAL first, changed |
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C-- for use with useMMsurfFc: |
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CHARACTER*(MAX_LEN_FNAM) fNam |
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INTEGER nm0, nm1, nmP |
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_RL myRelTime, fac, tmpFac |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- find which month to use for surface BC |
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C aim_surfForc_TimePeriod :: Length of forcing time period (e.g. 1 month) |
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C aim_surfForc_NppCycle :: Number of time period per Cycle (e.g. 12) |
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myRelTime = myTime - startTime |
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first = (myRelTime .lt. 0.5*deltaTClock) |
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if ( shelfice_forcing_period .eq. 0.D0 ) THEN |
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! & .or. externForcingCycle .eq. 0.D0 ) then |
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C control parameter is constant in time and only needs to be updated |
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C once in the beginning |
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changed = .false. |
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nm0 = 1 |
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nm1 = 1 |
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fac = 1.D0 |
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else |
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C-- Now calculate whether it is time to update the forcing arrays |
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if (externForcingCycle .eq. 0.0 ) THEN |
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CALL GET_PERIODIC_INTERVAL( |
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O nmP, nm0, nm1, tmpFac, fac, |
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I externForcingCycle, shelfice_forcing_period, |
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I deltaTclock, |
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I myTime+0.5*shelfice_forcing_period, |
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I myThid ) |
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fac = 1.D0 - fac |
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else |
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CALL GET_PERIODIC_INTERVAL( |
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O nmP, nm0, nm1, tmpFac, fac, |
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I externForcingCycle, shelfice_forcing_period, |
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I deltaTclock, myTime, |
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I myThid ) |
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endif |
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IF ( nm0.NE.nmP ) THEN |
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changed = .true. |
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ELSE |
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changed = .false. |
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ENDIF |
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IF ( first ) changed = .false. |
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endif |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C- Load new data: |
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C- Only one thread updates parameter in common block |
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C- Wait for everyone to set loadNewData before Master updates prevMnthIndex |
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_BARRIER |
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IF ( first ) THEN |
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IF ( SHELFICEmassforcingfile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RL(SHELFICEmassforcingfile, |
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& SHELFICEmass1, |
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& nm0,myIter,myThid) |
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ENDIF |
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! PRINT *, "GOT HERE FIELDS LOAD 2" |
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C- endif 1rst iter. |
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ENDIF |
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IF ( first .OR. changed) THEN |
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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 j=1,sNy |
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DO i=1,sNx |
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SHELFICEmass0(i,j,bi,bj) = |
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& SHELFICEmass1(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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! PRINT *, "GOT HERE FIELDS LOAD 4" |
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IF ( SHELFICEmassforcingfile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RL(SHELFICEmassforcingfile, |
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& SHELFICEmass1, |
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& nm0,myIter,myThid) |
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ENDIF |
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C- endif 1rst iter. |
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ENDIF |
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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 j=1,sNy |
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DO i=1,sNx |
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shelficemass (i,j,bi,bj) = |
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& fac * shelficemass0(i,j,bi,bj) |
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& + (1-fac) * shelficemass1(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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CALL EXCH_XY_RL (shelficemass, myThid) |
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! print *, "GOT HERE STREAMICE FIELDS LOAD", |
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! & first,changed,nm0,nm1,fac |
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#endif |
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RETURN |
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END |
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