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c $Header: /u/gcmpack/MITgcm/pkg/exf/exf_getffieldrec.F,v 1.11 2004/10/11 16:41:01 heimbach Exp $ |
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|
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#include "EXF_OPTIONS.h" |
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|
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|
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subroutine exf_GetFFieldRec( |
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I fldstartdate, fldperiod, |
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I fldstartdate1, fldstartdate2, |
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I usefldyearlyfields, |
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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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O yp, |
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O yf, |
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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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|
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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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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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c |
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c menemenlis@jpl.nasa.gov |
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c 27-Dec-2002 bug fix for verification/global_with_exf |
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c 8-Oct-2003 speed-up computations for long integration interval |
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c |
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c ================================================================== |
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c SUBROUTINE exf_GetFFieldRec |
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c ================================================================== |
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|
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implicit none |
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|
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c == global variables == |
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|
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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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#include "exf_param.h" |
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|
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c == routine arguments == |
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|
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_RL fldstartdate |
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_RL fldperiod |
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integer fldstartdate1 |
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integer fldstartdate2 |
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logical usefldyearlyfields |
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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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|
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c == local variables == |
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|
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integer mydate(4) |
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integer previousdate(4) |
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integer nextperiod(4) |
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integer difftime(4) |
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|
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integer fldcount |
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_RL fldsecs |
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_RL fldsectot |
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_RL fldsecs0 |
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_RL fldsecs1 |
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_RL prevfldsecs |
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integer prevfldcount |
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|
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integer iprint |
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integer date_array(4) |
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integer startinyear(4) |
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integer yi,yf,yp,yn |
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integer mi,mf,mp,mn |
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integer di,df,dp,dn |
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integer si,sf,sp,sn |
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integer li,lf,lp,ln |
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integer wi,wf,wp,wn |
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integer nextiter |
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_RL nexttime |
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|
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#ifdef EXF_VERBOSE |
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character*(max_len_mbuf) msgbuf |
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#endif |
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|
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c == end of interface == |
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|
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c Determine offset in seconds from beginning of input data |
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c to current date. |
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|
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c This is very slow for a long integration interval. |
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c call cal_GetDate( myiter, mytime, mydate, mythid ) |
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c call cal_TimePassed( fldstartdate, mydate, difftime, mythid ) |
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c call cal_ToSeconds( difftime, fldsecs, mythid ) |
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|
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fldsecs = mytime - fldstartdate |
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|
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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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|
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c This is very slow for a long integration interval. |
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c call cal_GetDate(myiter-1,mytime-modelstep,previousdate,mythid) |
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c call cal_TimePassed(fldstartdate,previousdate,difftime,mythid ) |
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c call cal_ToSeconds( difftime, prevfldsecs, mythid ) |
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|
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prevfldsecs = fldsecs - modelstep |
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|
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else |
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prevfldsecs = 0 |
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endif |
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|
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c Determine the flux records just before and after mycurrentdate. |
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if (repeatPeriod.eq.0.) then |
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|
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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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|
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elseif (repeatPeriod.gt.0.) then |
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|
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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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|
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else |
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|
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print *, 'repeatPeriod must be positive' |
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STOP 'ABNORMAL END: S/R EXF_GETFFIELDREC' |
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|
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endif |
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|
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c Weight belonging to irec for linear interpolation purposes. |
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fac = 1. - fldsecs/fldperiod |
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|
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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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endif |
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|
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c --------------------------------------------------------------------- |
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c --------------------------------------------------------------------- |
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|
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if (usefldyearlyfields) then |
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|
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if (repeatPeriod.NE.0.) then |
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print *, 'Use of usefldyearlyfields AND repeatPeriod', |
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& 'not implemented' |
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STOP 'ABNORMAL END: S/R EXF_GETFFIELDREC' |
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endif |
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|
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cph( |
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cph-exf-print iprint = yp |
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cph) |
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|
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c overwrite count0/1 indices by those w.r.t. yearly files |
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c fac, first, changed remain valid |
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|
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call cal_FullDate( fldstartdate1, fldstartdate2, |
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& date_array, mythid ) |
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call cal_ConvDate( date_array,yi,mi,di,si,li,wi,mythid ) |
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|
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call cal_GetDate( myiter, mytime, mydate, mythid ) |
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call cal_ConvDate( mydate,yf,mf,df,sf,lf,wf,mythid ) |
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|
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if ( yf .EQ. yi ) then |
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startinyear(1) = date_array(1) |
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else if ( mf.EQ.1 .AND. df.EQ.1 .AND. |
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& mydate(2) .LT. date_array(2) ) then |
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if ( (yf-1) .EQ. yi ) then |
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startinyear(1) = date_array(1) |
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else |
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startinyear(1) = (yf-1)*10000 + 100 + 1 |
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endif |
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else |
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startinyear(1) = yf*10000 + 100 + 1 |
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yi = yf |
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if ( mf.EQ.1 .AND. df.EQ.1 .AND. |
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& mydate(2) .EQ. date_array(2) ) then |
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first = .TRUE. |
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endif |
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endif |
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startinyear(2) = date_array(2) |
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startinyear(3) = date_array(3) |
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startinyear(4) = date_array(4) |
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|
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cph-exf-print if (iprint.EQ.3000) then |
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cph-exf-print print *, 'ph-exf startin ', startinyear(1), startinyear(2) |
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cph-exf-print print *, 'ph-exf mydate ', mydate(1), mydate(2) |
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cph-exf-print endif |
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|
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call cal_TimePassed( startinyear, mydate, difftime, mythid ) |
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call cal_ToSeconds( difftime, fldsectot, mythid ) |
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fldsecs = int(fldsectot/fldperiod)*fldperiod |
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fldcount = int(fldsecs/fldperiod) + 1 |
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|
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if ( first) then |
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changed = .false. |
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yp = yf |
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else |
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call cal_GetDate( myiter-1, mytime-modelstep, |
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& previousdate, mythid ) |
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call cal_ConvDate( previousdate,yp,mp,dp,sp,lp,wp,mythid ) |
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|
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if ( yp .NE. yf ) then |
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startinyear(1) = yp*10000 + 100 + 1 |
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startinyear(2) = date_array(2) |
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startinyear(3) = previousdate(3) |
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startinyear(4) = date_array(4) |
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endif |
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|
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call cal_TimePassed( startinyear, previousdate, difftime, |
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& mythid ) |
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call cal_ToSeconds( difftime, prevfldsecs, mythid ) |
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prevfldsecs = int(prevfldsecs/fldperiod)*fldperiod |
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prevfldcount = int(prevfldsecs/fldperiod) + 1 |
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|
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if (fldcount .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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endif |
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|
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count0 = fldcount |
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count1 = fldcount + 1 |
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|
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nexttime = mytime - (fldsectot-fldsecs) + fldperiod |
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nextiter = INT(nexttime/modelstep +0.0001) |
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|
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cph-exf-print if (iprint.EQ.3000) then |
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cph-exf-print print *, 'ph-exf fldsec ', fldsectot, fldsecs |
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cph-exf-print print *, 'ph-exf next ', nexttime, nexttime-mytime, |
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cph-exf-print & INT((nexttime-mytime)/modelstep) |
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cph-exf-print endif |
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|
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call cal_GetDate( |
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& nextiter, nexttime, nextperiod, mythid) |
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call cal_ConvDate( nextperiod,yn,mn,dn,sn,ln,wn,mythid ) |
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cph-exf-print if (iprint.EQ.3000) print *, 'ph-exf nextperiod ', |
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cph-exf-print & nextiter, nextperiod(1), nextperiod(2) |
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if ( yn.GT.yi ) then |
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count1 = 1 |
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yf = yn |
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endif |
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|
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endif |
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|
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cph-exf-print if (iprint.EQ.3000) then |
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cph-exf-print print *, 'ph-exf-rec yp, yf, yn ', |
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cph-exf-print & yp, yf, yn |
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cph-exf-print print *, 'ph-exf-rec myiter, c0, c1 ', |
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cph-exf-print & myiter, count0, count1, changed |
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cph-exf-print endif |
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|
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c --------------------------------------------------------------------- |
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c --------------------------------------------------------------------- |
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|
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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,3(x,i6))') |
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& ' exf_GetFFieldsRec: myiter, count0, count1:', |
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& myiter, 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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|
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end |
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