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dimitri |
1.8 |
c $Header: /u/gcmpack/MITgcm/pkg/exf/exf_getffieldrec.F,v 1.7 2003/06/24 16:07:32 heimbach Exp $ |
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heimbach |
1.1 |
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#include "CPP_OPTIONS.h" |
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subroutine exf_GetFFieldRec( |
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I fldstartdate, fldperiod, |
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O fac, |
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O first, |
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O changed, |
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O count0, |
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O count1, |
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I mytime, |
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I myiter, |
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I mythid |
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& ) |
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c ================================================================== |
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c SUBROUTINE exf_GetFFieldRec |
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c ================================================================== |
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c |
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c o Get flags, counters, and the linear interpolation factor for a |
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c given field. |
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c |
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c started: Christian Eckert eckert@mit.edu 30-Jun-1999 |
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c |
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c changed: Christian Eckert eckert@mit.edu 14-Jan-2000 |
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c - Restructured the code in order to create a package |
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c for the MITgcmUV. |
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c |
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c Christian Eckert eckert@mit.edu 12-Feb-2000 |
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dimitri |
1.3 |
c - Changed Routine names (package prefix: exf_) |
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c |
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c Curtis Heisey cheisey@mit.edu 19-Dec-2002 |
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c - added "repeatPeriod" for cycling of forcing datasets |
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heimbach |
1.1 |
c |
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dimitri |
1.3 |
c Dimitris Menemenlis menemenlis@jpl.nasa.gov 27-Dec-2002 |
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c - bug fix for verification/global_with_exf |
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heimbach |
1.1 |
c |
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c ================================================================== |
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c SUBROUTINE exf_GetFFieldRec |
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c ================================================================== |
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implicit none |
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c == global variables == |
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c cal: modelstart, modelstep |
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#include "EEPARAMS.h" |
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#include "cal.h" |
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cheisey |
1.2 |
#include "exf_param.h" |
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heimbach |
1.1 |
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c == routine arguments == |
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integer fldstartdate(4) |
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_RL fldperiod |
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_RL fac |
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logical first |
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logical changed |
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integer count0 |
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integer count1 |
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_RL mytime |
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integer myiter |
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integer mythid |
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c == local variables == |
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integer mydate(4) |
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integer previousdate(4) |
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integer difftime(4) |
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_RL fldsecs |
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cheisey |
1.2 |
_RL fldsecs0 |
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_RL fldsecs1 |
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heimbach |
1.1 |
integer prevfldcount |
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_RL prevfldsecs |
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dimitri |
1.3 |
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heimbach |
1.1 |
#ifdef EXF_VERBOSE |
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character*(max_len_mbuf) msgbuf |
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#endif |
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c == end of interface == |
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dimitri |
1.8 |
c Determine offset in seconds from beginning of input data |
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c to current date. |
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heimbach |
1.1 |
call cal_GetDate( myiter, mytime, mydate, mythid ) |
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call cal_TimePassed( fldstartdate, mydate, difftime, mythid ) |
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call cal_ToSeconds( difftime, fldsecs, mythid ) |
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dimitri |
1.3 |
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dimitri |
1.8 |
c Variables needed to set switches for reading new records. |
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first = ((mytime - modelstart) .lt. 0.5*modelstep) |
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if ( .not. first ) then |
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call cal_GetDate(myiter-1,mytime-modelstep,previousdate,mythid) |
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call cal_TimePassed(fldstartdate,previousdate,difftime,mythid ) |
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call cal_ToSeconds( difftime, prevfldsecs, mythid ) |
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else |
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prevfldsecs = 0 |
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cheisey |
1.2 |
endif |
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heimbach |
1.1 |
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dimitri |
1.8 |
c Determine the flux records just before and after mycurrentdate. |
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if (repeatPeriod.eq.0.) then |
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if ( fldsecs .lt. 0 ) then |
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print*,'flux data not available for this date' |
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stop 'ABNORMAL END: S/R EXF_GETFFIELDREC' |
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endif |
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count0 = int((fldsecs+0.5)/fldperiod) + 1 |
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count1 = count0 + 1 |
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prevfldcount= int((prevfldsecs+0.5)/fldperiod) + 1 |
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fldsecs = fldsecs - int((fldsecs+0.5)/fldperiod)*fldperiod |
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elseif (repeatPeriod.gt.0.) then |
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c If using repeating data (e.g. monthly means) then make |
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c fldsecs cycle around. |
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do while ( fldsecs .lt. 0 ) |
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fldsecs = fldsecs + repeatPeriod |
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enddo |
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fldsecs0 = mod(fldsecs,repeatPeriod) |
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count0 = int((fldsecs0+0.5)/fldperiod) + 1 |
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fldsecs1 = mod(fldsecs+fldperiod,repeatPeriod) |
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count1 = int((fldsecs1+0.5)/fldperiod) + 1 |
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do while ( prevfldsecs .lt. 0 ) |
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prevfldsecs = prevfldsecs + repeatPeriod |
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enddo |
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prevfldsecs = mod(prevfldsecs,repeatPeriod) |
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prevfldcount= int((prevfldsecs+0.5)/fldperiod) + 1 |
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fldsecs = fldsecs0-int((fldsecs0+0.5)/fldperiod)*fldperiod |
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heimbach |
1.1 |
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else |
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dimitri |
1.8 |
print*,'repeatPeriod must be positive' |
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stop 'ABNORMAL END: S/R EXF_GETFFIELDREC' |
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dimitri |
1.3 |
endif |
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dimitri |
1.8 |
c Set switches for reading new records. |
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if ( first) then |
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changed = .false. |
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else |
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if (count0 .ne. prevfldcount) 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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heimbach |
1.1 |
endif |
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c Weight belonging to irec for linear interpolation purposes. |
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dimitri |
1.8 |
c Note: The weight as chosen here is 1. - fac of the "old" |
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c MITgcm's estimation program. |
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heimbach |
1.1 |
fac = 1. - fldsecs/fldperiod |
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#ifdef EXF_VERBOSE |
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c Do some printing for the protocol. |
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_BEGIN_MASTER( mythid ) |
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write(msgbuf,'(a)') ' ' |
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call print_message( msgbuf, standardmessageunit, |
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& SQUEEZE_RIGHT , mythid) |
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write(msgbuf,'(a,2x,l2,2x,l2,2x,D15.8)') |
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& ' exf_GetFFieldsRec: first, changed, fac:', |
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& first, changed, fac |
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call print_message( msgbuf, standardmessageunit, |
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& SQUEEZE_RIGHT , mythid) |
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write(msgbuf,'(a,i4,i4)') |
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& ' exf_GetFFieldsRec: count0, count1:', |
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& count0, count1 |
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call print_message( msgbuf, standardmessageunit, |
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& SQUEEZE_RIGHT , mythid) |
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write(msgbuf,'(a)') ' ' |
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call print_message( msgbuf, standardmessageunit, |
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& SQUEEZE_RIGHT , mythid) |
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_END_MASTER( mythid ) |
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#endif |
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end |
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