| 1 |
c $Header: /u/gcmpack/MITgcm/pkg/exf/exf_getffieldrec.F,v 1.7 2003/06/24 16:07:32 heimbach Exp $ |
| 2 |
|
| 3 |
#include "CPP_OPTIONS.h" |
| 4 |
|
| 5 |
|
| 6 |
subroutine exf_GetFFieldRec( |
| 7 |
I fldstartdate, fldperiod, |
| 8 |
O fac, |
| 9 |
O first, |
| 10 |
O changed, |
| 11 |
O count0, |
| 12 |
O count1, |
| 13 |
I mytime, |
| 14 |
I myiter, |
| 15 |
I mythid |
| 16 |
& ) |
| 17 |
|
| 18 |
c ================================================================== |
| 19 |
c SUBROUTINE exf_GetFFieldRec |
| 20 |
c ================================================================== |
| 21 |
c |
| 22 |
c o Get flags, counters, and the linear interpolation factor for a |
| 23 |
c given field. |
| 24 |
c |
| 25 |
c started: Christian Eckert eckert@mit.edu 30-Jun-1999 |
| 26 |
c |
| 27 |
c changed: Christian Eckert eckert@mit.edu 14-Jan-2000 |
| 28 |
c - Restructured the code in order to create a package |
| 29 |
c for the MITgcmUV. |
| 30 |
c |
| 31 |
c Christian Eckert eckert@mit.edu 12-Feb-2000 |
| 32 |
c - Changed Routine names (package prefix: exf_) |
| 33 |
c |
| 34 |
c Curtis Heisey cheisey@mit.edu 19-Dec-2002 |
| 35 |
c - added "repeatPeriod" for cycling of forcing datasets |
| 36 |
c |
| 37 |
c Dimitris Menemenlis menemenlis@jpl.nasa.gov 27-Dec-2002 |
| 38 |
c - bug fix for verification/global_with_exf |
| 39 |
c |
| 40 |
c ================================================================== |
| 41 |
c SUBROUTINE exf_GetFFieldRec |
| 42 |
c ================================================================== |
| 43 |
|
| 44 |
implicit none |
| 45 |
|
| 46 |
c == global variables == |
| 47 |
|
| 48 |
c cal: modelstart, modelstep |
| 49 |
#include "EEPARAMS.h" |
| 50 |
#include "cal.h" |
| 51 |
#include "exf_param.h" |
| 52 |
|
| 53 |
c == routine arguments == |
| 54 |
|
| 55 |
integer fldstartdate(4) |
| 56 |
_RL fldperiod |
| 57 |
_RL fac |
| 58 |
logical first |
| 59 |
logical changed |
| 60 |
integer count0 |
| 61 |
integer count1 |
| 62 |
_RL mytime |
| 63 |
integer myiter |
| 64 |
integer mythid |
| 65 |
|
| 66 |
c == local variables == |
| 67 |
|
| 68 |
integer mydate(4) |
| 69 |
integer previousdate(4) |
| 70 |
integer difftime(4) |
| 71 |
|
| 72 |
_RL fldsecs |
| 73 |
_RL fldsecs0 |
| 74 |
_RL fldsecs1 |
| 75 |
integer prevfldcount |
| 76 |
_RL prevfldsecs |
| 77 |
|
| 78 |
#ifdef EXF_VERBOSE |
| 79 |
character*(max_len_mbuf) msgbuf |
| 80 |
#endif |
| 81 |
|
| 82 |
c == end of interface == |
| 83 |
|
| 84 |
c Determine offset in seconds from beginning of input data |
| 85 |
c to current date. |
| 86 |
call cal_GetDate( myiter, mytime, mydate, mythid ) |
| 87 |
call cal_TimePassed( fldstartdate, mydate, difftime, mythid ) |
| 88 |
call cal_ToSeconds( difftime, fldsecs, mythid ) |
| 89 |
|
| 90 |
c Variables needed to set switches for reading new records. |
| 91 |
first = ((mytime - modelstart) .lt. 0.5*modelstep) |
| 92 |
if ( .not. first ) then |
| 93 |
call cal_GetDate(myiter-1,mytime-modelstep,previousdate,mythid) |
| 94 |
call cal_TimePassed(fldstartdate,previousdate,difftime,mythid ) |
| 95 |
call cal_ToSeconds( difftime, prevfldsecs, mythid ) |
| 96 |
else |
| 97 |
prevfldsecs = 0 |
| 98 |
endif |
| 99 |
|
| 100 |
c Determine the flux records just before and after mycurrentdate. |
| 101 |
if (repeatPeriod.eq.0.) then |
| 102 |
|
| 103 |
if ( fldsecs .lt. 0 ) then |
| 104 |
print*,'flux data not available for this date' |
| 105 |
stop 'ABNORMAL END: S/R EXF_GETFFIELDREC' |
| 106 |
endif |
| 107 |
count0 = int((fldsecs+0.5)/fldperiod) + 1 |
| 108 |
count1 = count0 + 1 |
| 109 |
prevfldcount= int((prevfldsecs+0.5)/fldperiod) + 1 |
| 110 |
fldsecs = fldsecs - int((fldsecs+0.5)/fldperiod)*fldperiod |
| 111 |
|
| 112 |
elseif (repeatPeriod.gt.0.) then |
| 113 |
|
| 114 |
c If using repeating data (e.g. monthly means) then make |
| 115 |
c fldsecs cycle around. |
| 116 |
do while ( fldsecs .lt. 0 ) |
| 117 |
fldsecs = fldsecs + repeatPeriod |
| 118 |
enddo |
| 119 |
fldsecs0 = mod(fldsecs,repeatPeriod) |
| 120 |
count0 = int((fldsecs0+0.5)/fldperiod) + 1 |
| 121 |
fldsecs1 = mod(fldsecs+fldperiod,repeatPeriod) |
| 122 |
count1 = int((fldsecs1+0.5)/fldperiod) + 1 |
| 123 |
do while ( prevfldsecs .lt. 0 ) |
| 124 |
prevfldsecs = prevfldsecs + repeatPeriod |
| 125 |
enddo |
| 126 |
prevfldsecs = mod(prevfldsecs,repeatPeriod) |
| 127 |
prevfldcount= int((prevfldsecs+0.5)/fldperiod) + 1 |
| 128 |
fldsecs = fldsecs0-int((fldsecs0+0.5)/fldperiod)*fldperiod |
| 129 |
|
| 130 |
else |
| 131 |
|
| 132 |
print*,'repeatPeriod must be positive' |
| 133 |
stop 'ABNORMAL END: S/R EXF_GETFFIELDREC' |
| 134 |
|
| 135 |
endif |
| 136 |
|
| 137 |
c Set switches for reading new records. |
| 138 |
if ( first) then |
| 139 |
changed = .false. |
| 140 |
else |
| 141 |
if (count0 .ne. prevfldcount) then |
| 142 |
changed = .true. |
| 143 |
else |
| 144 |
changed = .false. |
| 145 |
endif |
| 146 |
endif |
| 147 |
|
| 148 |
c Weight belonging to irec for linear interpolation purposes. |
| 149 |
c Note: The weight as chosen here is 1. - fac of the "old" |
| 150 |
c MITgcm's estimation program. |
| 151 |
fac = 1. - fldsecs/fldperiod |
| 152 |
|
| 153 |
#ifdef EXF_VERBOSE |
| 154 |
c Do some printing for the protocol. |
| 155 |
_BEGIN_MASTER( mythid ) |
| 156 |
write(msgbuf,'(a)') ' ' |
| 157 |
call print_message( msgbuf, standardmessageunit, |
| 158 |
& SQUEEZE_RIGHT , mythid) |
| 159 |
write(msgbuf,'(a,2x,l2,2x,l2,2x,D15.8)') |
| 160 |
& ' exf_GetFFieldsRec: first, changed, fac:', |
| 161 |
& first, changed, fac |
| 162 |
call print_message( msgbuf, standardmessageunit, |
| 163 |
& SQUEEZE_RIGHT , mythid) |
| 164 |
write(msgbuf,'(a,i4,i4)') |
| 165 |
& ' exf_GetFFieldsRec: count0, count1:', |
| 166 |
& count0, count1 |
| 167 |
call print_message( msgbuf, standardmessageunit, |
| 168 |
& SQUEEZE_RIGHT , mythid) |
| 169 |
write(msgbuf,'(a)') ' ' |
| 170 |
call print_message( msgbuf, standardmessageunit, |
| 171 |
& SQUEEZE_RIGHT , mythid) |
| 172 |
_END_MASTER( mythid ) |
| 173 |
#endif |
| 174 |
|
| 175 |
end |
Parent Directory
| 
Revision Log
| 
Revision Graph