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C $Header: /u/gcmpack/models/MITgcmUV/model/src/external_fields_load.F,v 1.5 2001/02/04 14:38:47 cnh Exp $ |
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C $Name: $ |
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#include "CPP_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 "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 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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INTEGER I, J |
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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*16 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),'.sun.b' |
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OPEN(1,FILE=fNam(1:14),STATUS='old',FORM='unformatted') |
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READ(1) aim_albedo |
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CLOSE(1) |
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DO J=1,aim_nyIo |
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DO I=1,aim_nxIo |
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C aim_albedo(I,J) = aim_albedo(I,J)/100. |
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ENDDO |
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ENDDO |
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C o Surface temperature ( in kelvin ) |
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WRITE(fNam,'(A,A,A)' ) 'tsurf.',mnthNam(mnthIndex),'.sun.b' |
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OPEN(1,FILE=fNam(1:15),STATUS='old',FORM='unformatted') |
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READ(1) aim_surfTemp |
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CLOSE(1) |
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C o Soil moisture ( convert to 20cm bucket fraction ) |
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WRITE(fNam,'(A,A,A)' ) 'smoist.',mnthNam(mnthIndex),'.sun.b' |
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OPEN(1,FILE=fNam(1:16),STATUS='old',FORM='unformatted') |
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READ(1) aim_soilMoisture |
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CLOSE(1) |
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DO J=1,aim_nyIo |
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DO I=1,aim_nxIo |
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C aim_soilMoisture(I,J) = aim_soilMoisture(I,J)/20. |
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ENDDO |
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ENDDO |
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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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