C $Header: /u/gcmpack/MITgcm/pkg/ecco/cost_drift.F,v 1.5 2005/05/27 21:41:32 heimbach Exp $
#include "COST_CPPOPTIONS.h"
subroutine COST_DRIFT(
I myiter,
I mytime,
I mythid
& )
c ==================================================================
c SUBROUTINE cost_Drift
c ==================================================================
c
c o Evaluate cost function contribution of the t and S difference
c between the first and the last year.
c
c started: from the "old" code
c
c Elisabeth Remy eremy@ucsd.edu july 31 2001
c
c ==================================================================
c SUBROUTINE cost_Drift
c ==================================================================
implicit none
c == global variables ==
#include "EEPARAMS.h"
#include "SIZE.h"
#include "GRID.h"
#include "DYNVARS.h"
#include "cal.h"
#include "ecco_cost.h"
#include "ctrl.h"
#include "ctrl_dummy.h"
#include "optim.h"
c == routine arguments ==
integer myiter
_RL mytime
integer mythid
c == local variables ==
_RS one_rs
parameter( one_rs = 1. )
integer bi,bj
integer i,j,k
integer itlo,ithi
integer jtlo,jthi
integer jmin,jmax
integer imin,imax
integer irec
integer iltheta
integer ilsalt
integer nf, nl, nfmin
integer minrec
_RL fctilet
_RL fctiles
_RL fcthread_tdrift
_RL fcthread_tdrifs
_RL errtannurescal
_RL errsannurescal
character*(80) fnametheta
character*(80) fnamesalt
logical doglobalread
logical ladinit
character*(MAX_LEN_MBUF) msgbuf
c == external functions ==
integer ilnblnk
external
c == end of interface ==
jtlo = mybylo(mythid)
jthi = mybyhi(mythid)
itlo = mybxlo(mythid)
ithi = mybxhi(mythid)
jmin = 1
jmax = sny
imin = 1
imax = snx
c-- Read tiled data.
doglobalread = .false.
ladinit = .false.
#ifdef ALLOW_DRIFT_COST_CONTRIBUTION
c-- Rescale error read from data.err to convert to error/year
c-- (e.g. 0.08 degC year based on Levitus decadal drift 0.8 degC)
errtannurescal = 0.16
errsannurescal = 0.16
if (optimcycle .ge. 0) then
iltheta = ilnblnk( tbarfile )
write(fnametheta(1:80),'(2a,i10.10)')
& tbarfile(1:iltheta),'.',optimcycle
ilsalt = ilnblnk( sbarfile )
write(fnamesalt(1:80),'(2a,i10.10)')
& sbarfile(1:ilsalt),'.',optimcycle
endif
fcthread_tdrift = 0. _d 0
fcthread_tdrifs = 0. _d 0
do bj = jtlo,jthi
do bi = itlo,ithi
do k = 1,nr
do j = jmin,jmax
do i = imin,imax
Tfmean(i,j,k,bi,bj) = 0.0
Sfmean(i,j,k,bi,bj) = 0.0
Tlmean(i,j,k,bi,bj) = 0.0
Slmean(i,j,k,bi,bj) = 0.0
enddo
enddo
enddo
enddo
enddo
nf = 0
nl = 0
c-- Number of full years
nfmin = MAX(INT(FLOAT(nmonsrec)/12.),1)
c-- Prevent code from crashing if integrated for less than a year
minrec = MIN(nmonsrec,12)
cph(
print *, 'ph-cost-drift: nfmin, minrec ', nfmin, minrec
print *, 'ph-cost-drift: weight ',
& wsalt(1,1,1)/(nfmin*errsannurescal)**2
cph)
c-- Loop over records.
do irec = 1,minrec
c-- Read time averages and the monthly mean data.
call ACTIVE_READ_XYZ( fnametheta, tbar, irec,
& doglobalread, ladinit,
& optimcycle, mythid,
& xx_tbar_mean_dummy )
call ACTIVE_READ_XYZ( fnamesalt, sbar, irec,
& doglobalread, ladinit,
& optimcycle, mythid,
& xx_sbar_mean_dummy )
nf = nf + 1
do bj = jtlo,jthi
do bi = itlo,ithi
do k = 1,nr
do j = jmin,jmax
do i = imin,imax
Tfmean(i,j,k,bi,bj) = Tfmean(i,j,k,bi,bj) +
& tbar(i,j,k,bi,bj)
Sfmean(i,j,k,bi,bj) = Sfmean(i,j,k,bi,bj) +
& sbar(i,j,k,bi,bj)
enddo
enddo
enddo
enddo
enddo
enddo
do irec = nmonsrec-minrec+1, nmonsrec
c-- Read time averages and the monthly mean data.
call ACTIVE_READ_XYZ( fnametheta, tbar, irec,
& doglobalread, ladinit,
& optimcycle, mythid,
& xx_tbar_mean_dummy )
call ACTIVE_READ_XYZ( fnamesalt, sbar, irec,
& doglobalread, ladinit,
& optimcycle, mythid,
& xx_sbar_mean_dummy )
nl = nl + 1
do bj = jtlo,jthi
do bi = itlo,ithi
do k = 1,nr
do j = jmin,jmax
do i = imin,imax
Tlmean(i,j,k,bi,bj) = Tlmean(i,j,k,bi,bj) +
& tbar(i,j,k,bi,bj)
Slmean(i,j,k,bi,bj) = Slmean(i,j,k,bi,bj) +
& sbar(i,j,k,bi,bj)
enddo
enddo
enddo
enddo
enddo
enddo
do bj = jtlo,jthi
do bi = itlo,ithi
c-- Loop over the model layers
fctiles = 0. _d 0
fctilet = 0. _d 0
do k = 1,nr
c-- Compute model misfit and cost function term for
c the temperature field.
do j = jmin,jmax
do i = imin,imax
if (_hFacC(i,j,k,bi,bj) .ne. 0.) then
fctiles = fctiles +
& (wsalt(k,bi,bj)*cosphi(i,j,bi,bj)/
& ((nfmin*errsannurescal)**2)*
& (Slmean(i,j,k,bi,bj)/nl - Sfmean(i,j,k,bi,bj)/nf)*
& (Slmean(i,j,k,bi,bj)/nl - Sfmean(i,j,k,bi,bj)/nf))
c
fctilet = fctilet +
& (wtheta(k,bi,bj)*cosphi(i,j,bi,bj)/
& ((nfmin*errtannurescal)**2)*
& (Tlmean(i,j,k,bi,bj)/nl - Tfmean(i,j,k,bi,bj)/nf)*
& (Tlmean(i,j,k,bi,bj)/nl - Tfmean(i,j,k,bi,bj)/nf))
if ( wtheta(k,bi,bj)*cosphi(i,j,bi,bj) .ne. 0. )
& num_tdrift(bi,bj) = num_tdrift(bi,bj) + 1. _d 0
if ( wsalt(k,bi,bj)*cosphi(i,j,bi,bj) .ne. 0. )
& num_sdrift(bi,bj) = num_sdrift(bi,bj) + 1. _d 0
endif
enddo
enddo
enddo
c-- End of loop over layers.
fcthread_tdrift = fcthread_tdrift + fctilet
fcthread_tdrifs = fcthread_tdrifs + fctiles
objf_tdrift(bi,bj) = objf_tdrift(bi,bj) + fctilet
objf_sdrift(bi,bj) = objf_sdrift(bi,bj) + fctiles
#ifdef ECCO_VERBOSE
c-- Print cost function for each tile in each thread.
write(msgbuf,'(a)') ' '
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
write(msgbuf,'(a,i8.8,1x,i3.3,1x,i3.3)')
& ' cost_Drift: irec,bi,bj = ',irec,bi,bj
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
write(msgbuf,'(a,d22.15)')
& ' cost function (temperature) = ',
& fctilet+fctiles
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
write(msgbuf,'(a)') ' '
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
#endif
enddo
enddo
#ifdef ECCO_VERBOSE
c-- Print cost function for all tiles.
c _GLOBAL_SUM_R8( fcthread_tdrift , myThid )
c _GLOBAL_SUM_R8( fcthread_tdrifs , myThid )
write(msgbuf,'(a)') ' '
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
write(msgbuf,'(a,i8.8)')
& ' cost_Drift: irec = ',irec
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
write(msgbuf,'(a,a,d22.15)')
& ' global cost function value',
& ' (temp + salt) = ',fcthread_tdrift+fcthread_tdrifs
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
write(msgbuf,'(a)') ' '
call PRINT_MESSAGE( msgbuf, standardmessageunit,
& SQUEEZE_RIGHT , mythid)
#endif
#endif
return
end