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heimbach |
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C $Header: /u/gcmpack/models/MITgcmUV/model/src/external_fields_load.F,v 1.1 2000/09/11 20:45:57 heimbach Exp $ |
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#include "CPP_OPTIONS.h" |
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CStartOfInterface |
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SUBROUTINE EXTERNAL_FIELDS_LOAD( myTime, myIter, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE EXTERNAL_FIELDS_LOAD | |
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C | o Control reading of fields from external source. | |
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C |==========================================================| |
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C | External source field loading routine. | |
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C | This routine is called every time we want to | |
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C | load a a set of external fields. The routine decides | |
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C | which fields to load and then reads them in. | |
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C | This routine needs to be customised for particular | |
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C | experiments. | |
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C | Notes | |
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C | ===== | |
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C | Two-dimensional and three-dimensional I/O are handled in | |
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C | the following way under MITgcmUV. A master thread | |
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C | performs I/O using system calls. This threads reads data | |
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C | into a temporary buffer. At present the buffer is loaded | |
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C | with the entire model domain. This is probably OK for now| |
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C | Each thread then copies data from the buffer to the | |
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C | region of the proper array it is responsible for. | |
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C | ===== | |
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C | Conversion of flux fields are described in FFIELDS.h | |
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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 "FFIELDS.h" |
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#include "GRID.h" |
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C === Routine arguments === |
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C myThid - Thread no. that called this routine. |
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C myTime - Simulation time |
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C myIter - Simulation timestep number |
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INTEGER myThid |
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_RL myTime |
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INTEGER myIter |
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CEndOfInterface |
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C === Functions === |
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LOGICAL DIFFERENT_MULTIPLE |
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EXTERNAL DIFFERENT_MULTIPLE |
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C === Local arrays === |
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COMMON /TDFIELDS/ |
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& taux0, tauy0, Qnet0, EmPmR0, SST0, SSS0, Qsw0, |
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& taux1, tauy1, Qnet1, EmPmR1, SST1, SSS1, Qsw1 |
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_RS taux0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS tauy0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS Qnet0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS EmPmR0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS SST0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS SSS0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS Qsw0 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS taux1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS tauy1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS Qnet1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS EmPmR1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS SST1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS SSS1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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_RS Qsw1 (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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C === Local variables === |
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INTEGER bi,bj,i,j,intime0,intime1 |
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_RL aWght,bWght,rdt |
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INTEGER nForcingPeriods,Imytm,Ifprd,Ifcyc,Iftm |
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IF ( periodicExternalForcing ) THEN |
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C First call requires that we initialize everything to zero for safety |
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IF ( myIter .EQ. nIter0 ) THEN |
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CALL LEF_ZERO( taux0 ,myThid ) |
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CALL LEF_ZERO( tauy0 ,myThid ) |
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CALL LEF_ZERO( Qnet0 ,myThid ) |
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CALL LEF_ZERO( EmPmR0 ,myThid ) |
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CALL LEF_ZERO( SST0 ,myThid ) |
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CALL LEF_ZERO( SSS0 ,myThid ) |
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CALL LEF_ZERO( Qsw0 ,myThid ) |
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CALL LEF_ZERO( taux1 ,myThid ) |
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CALL LEF_ZERO( tauy1 ,myThid ) |
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CALL LEF_ZERO( Qnet1 ,myThid ) |
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CALL LEF_ZERO( EmPmR1 ,myThid ) |
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CALL LEF_ZERO( SST1 ,myThid ) |
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CALL LEF_ZERO( SSS1 ,myThid ) |
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CALL LEF_ZERO( Qsw1 ,myThid ) |
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ENDIF |
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C Now calculate whether it is time to update the forcing arrays |
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rdt=1. _d 0 / deltaTclock |
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nForcingPeriods=int(externForcingCycle/externForcingPeriod+0.5) |
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Imytm=int(myTime*rdt+0.5) |
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Ifprd=int(externForcingPeriod*rdt+0.5) |
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Ifcyc=int(externForcingCycle*rdt+0.5) |
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Iftm=mod( Imytm+Ifcyc-Ifprd/2 ,Ifcyc) |
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intime0=int(Iftm/Ifprd) |
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intime1=mod(intime0+1,nForcingPeriods) |
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aWght=float( Iftm-Ifprd*intime0 )/float( Ifprd ) |
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bWght=1.-aWght |
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intime0=intime0+1 |
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intime1=intime1+1 |
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IF ( |
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& Iftm-Ifprd*(intime0-1) .EQ. 0 |
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& .OR. myIter .EQ. nIter0 |
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& ) THEN |
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_BEGIN_MASTER(myThid) |
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C If the above condition is met then we need to read in |
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C data for the period ahead and the period behind myTime. |
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write(0,*) |
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& 'S/R LOAD_INTERPOLATE_FORCING: Reading new data',myTime,myIter |
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IF ( zonalWindFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( zonalWindFile,taux0,intime0,myIter,myThid ) |
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CALL READ_REC_XY_RS( zonalWindFile,taux1,intime1,myIter,myThid ) |
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ENDIF |
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IF ( meridWindFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( meridWindFile,tauy0,intime0,myIter,myThid ) |
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CALL READ_REC_XY_RS( meridWindFile,tauy1,intime1,myIter,myThid ) |
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ENDIF |
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IF ( surfQFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( surfQFile,Qnet0,intime0,myIter,myThid ) |
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CALL READ_REC_XY_RS( surfQFile,Qnet1,intime1,myIter,myThid ) |
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ENDIF |
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IF ( EmPmRfile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( EmPmRfile,EmPmR0,intime0,myIter,myThid ) |
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CALL READ_REC_XY_RS( EmPmRfile,EmPmR1,intime1,myIter,myThid ) |
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ENDIF |
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IF ( thetaClimFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( thetaClimFile,SST0,intime0,myIter,myThid ) |
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CALL READ_REC_XY_RS( thetaClimFile,SST1,intime1,myIter,myThid ) |
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ENDIF |
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IF ( saltClimFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( saltClimFile,SSS0,intime0,myIter,myThid ) |
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CALL READ_REC_XY_RS( saltClimFile,SSS1,intime1,myIter,myThid ) |
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ENDIF |
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#ifdef SHORTWAVE_HEATING |
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IF ( surfQswFile .NE. ' ' ) THEN |
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CALL READ_REC_XY_RS( surfQswFile,Qsw0,intime0,myIter,myThid ) |
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CALL READ_REC_XY_RS( surfQswFile,Qsw1,intime1,myIter,myThid ) |
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ENDIF |
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#endif |
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_END_MASTER(myThid) |
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C |
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_EXCH_XY_R4(SST0 , myThid ) |
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_EXCH_XY_R4(SST1 , myThid ) |
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_EXCH_XY_R4(SSS0 , myThid ) |
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_EXCH_XY_R4(SSS1 , myThid ) |
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_EXCH_XY_R4(taux0 , myThid ) |
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_EXCH_XY_R4(taux1 , myThid ) |
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_EXCH_XY_R4(tauy0 , myThid ) |
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_EXCH_XY_R4(tauy1 , myThid ) |
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_EXCH_XY_R4(Qnet0, myThid ) |
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_EXCH_XY_R4(Qnet1, myThid ) |
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_EXCH_XY_R4(EmPmR0, myThid ) |
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_EXCH_XY_R4(EmPmR1, myThid ) |
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#ifdef SHORTWAVE_HEATING |
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_EXCH_XY_R4(Qsw0, myThid ) |
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_EXCH_XY_R4(Qsw1, myThid ) |
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#endif |
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C |
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ENDIF |
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C-- Interpolate fu,fv,Qnet,EmPmR,SST,SSS,Qsw |
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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-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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SST(i,j,bi,bj) = bWght*SST0(i,j,bi,bj) |
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& +aWght*SST1(i,j,bi,bj) |
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SSS(i,j,bi,bj) = bWght*SSS0(i,j,bi,bj) |
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& +aWght*SSS1(i,j,bi,bj) |
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fu(i,j,bi,bj) = bWght*taux0(i,j,bi,bj) |
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& +aWght*taux1(i,j,bi,bj) |
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fv(i,j,bi,bj) = bWght*tauy0(i,j,bi,bj) |
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& +aWght*tauy1(i,j,bi,bj) |
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Qnet(i,j,bi,bj) = bWght*Qnet0(i,j,bi,bj) |
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& +aWght*Qnet1(i,j,bi,bj) |
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EmPmR(i,j,bi,bj) = bWght*EmPmR0(i,j,bi,bj) |
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& +aWght*EmPmR1(i,j,bi,bj) |
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#ifdef SHORTWAVE_HEATING |
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Qsw(i,j,bi,bj) = bWght*Qsw0(i,j,bi,bj) |
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& +aWght*Qsw1(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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ENDDO |
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C Convert units and signs |
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CALL EXTERNAL_FIELDS_SCALE( myThid ) |
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C endif for periodicForcing |
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ENDIF |
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RETURN |
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END |
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SUBROUTINE LEF_ZERO( arr ,myThid ) |
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C This routine simply sets the argument array to zero |
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C Used only by EXTERNAL_FIELDS_LOAD |
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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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C === Arguments === |
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_RS arr (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy) |
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INTEGER myThid |
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C === Local variables === |
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INTEGER i,j,bi,bj |
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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-Oly,sNy+Oly |
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DO i=1-Olx,sNx+Olx |
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arr(i,j,bi,bj)=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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RETURN |
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END |
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