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C $Header: /u/gcmpack/models/MITgcmUV/pkg/aim/aim_external_fields_load.F,v 1.2 2001/06/18 17:39:58 cnh Exp $ |
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C $Name: $ |
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#include "AIM_OPTIONS.h" |
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CStartOfInterface |
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SUBROUTINE AIM_EXTERNAL_FIELDS_LOAD( |
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I myTime, myIter, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE AIM_EXTERNAL_FIELDS_LOAD | |
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C | o Control reading of AIM fields from external source. | |
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C |==========================================================| |
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C | Loads bottom boundary condition datasets for AIM. | |
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C | The routine is called every timetep and periodically | |
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C | loads a set of external fields. | |
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C | Monthly climatology files are read for | |
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C | Albedo | |
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C | Soil moisture | |
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C | Land and sea surface temps. | |
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C | Most of the work is done by the master the thread while | |
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C | the other threads spin. | |
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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 "AIM_FFIELDS.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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#ifdef ALLOW_AIM |
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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 pfact - used to convert Pot.Temp. to in-situ Temp. |
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INTEGER bi,bj, i, j |
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_RL pfact |
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REAL tYear |
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INTEGER mnthIndex |
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INTEGER prevMnthIndex |
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DATA prevMnthIndex / 0 / |
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SAVE prevMnthIndex |
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CHARACTER*17 fNam |
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CHARACTER*3 mnthNam(12) |
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DATA mnthNam / |
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& 'jan', 'feb', 'mar', 'apr', 'may', 'jun', |
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& 'jul', 'aug', 'sep', 'oct', 'nov', 'dec' / |
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SAVE mnthNam |
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LOGICAL firstCall |
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DATA FirstCall /.TRUE./ |
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SAVE FirstCall |
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C Prevent loading of new data before everyone has finished with it |
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CALL BAR2(myThid) |
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C Master thread coordinates loading of AIM datasets |
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_BEGIN_MASTER( myThid ) |
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C Calculate offset into a year |
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tYear = myTime/(86400.*360.) - |
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& FLOAT(INT(myTime/(86400.*360.))) |
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mnthIndex = INT(tYear*12.)+1 |
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IF ( mnthIndex .NE. prevMnthIndex .OR. |
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& FirstCall ) THEN |
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C New month so load in data |
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prevMnthIndex = mnthIndex |
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C o Albedo ( convert % to fraction ) |
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WRITE(fNam,'(A,A,A)' ) 'salb.',mnthNam(mnthIndex),'.cs.bin' |
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CALL MDSREADFIELD(fNam(1:15),readBinaryPrec,'RS',1, |
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O aim_albedo, |
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I 1,myThid) |
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C o Surface temperature ( in kelvin ) |
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WRITE(fNam,'(A,A,A)' ) 'stheta.',mnthNam(mnthIndex),'.cs.bin' |
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c WRITE(fNam,'(A,A,A)' ) 'tsurf.',mnthNam(mnthIndex),'.cs.bin' |
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CALL MDSREADFIELD(fNam(1:17),readBinaryPrec,'RS',1, |
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O aim_surftemp, |
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I 1,myThid) |
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C o Soil moisture |
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WRITE(fNam,'(A,A,A)' ) 'smoist.',mnthNam(mnthIndex),'.cs.bin' |
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CALL MDSREADFIELD(fNam(1:17),readBinaryPrec,'RS',1, |
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O aim_soilMoisture, |
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I 1,myThid) |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C-- Converts fields for direct use in Atmos. Physics routine. |
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C better here rather than in "aim_do_atmos" since: |
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C a) change together conversion factor and input file name. |
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C b) conversion applied only 1 time / month ; |
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C c) easy to check here (variable in common). |
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DO bj=1,nSy |
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DO bi=1,nSx |
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C- Converts surface albedo : input data is in % 0-100 |
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C and Francos package needs a fraction between 0-1 |
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DO j=1,sNy |
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DO i=1,sNx |
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aim_albedo(I,J,bi,bj) = aim_albedo(I,J,bi,bj)/100. |
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ENDDO |
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ENDDO |
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C- Converts soil moisture (case input is in cm in bucket of depth 20cm.) |
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c DO j=1,sNy |
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c DO i=1,sNx |
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c aim_soilMoisture(I,J,bi,bj) = aim_soilMoisture(I,J,bi,bj) |
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c & /20. |
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c ENDDO |
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c ENDDO |
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C- Converts surface potential temp. to in-situ temperature : |
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DO j=1,sNy |
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DO i=1,sNx |
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pfact = (Ro_surf(i,j,bi,bj)/atm_po)**atm_kappa |
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aim_surftemp(i,j,bi,bj) = aim_surftemp(i,j,bi,bj) |
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& * pfact |
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ENDDO |
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ENDDO |
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C-- end bi,bj loops |
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ENDDO |
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ENDDO |
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IF (FirstCall) |
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& CALL WRITE_FLD_XY_RL('aim_Tsurf',' ',aim_surftemp,0,myThid) |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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ENDIF |
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FirstCall = .FALSE. |
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_END_MASTER( myThid ) |
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C Stop anyone leaving until all data is read |
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CALL BAR2(myThid) |
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#endif /* ALLOW_AIM */ |
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RETURN |
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END |
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