C $Header: /u/gcmpack/MITgcm/pkg/ecco/cost_theta.F,v 1.9 2007/10/09 00:02:51 jmc Exp $
C $Name: $
#include "COST_CPPOPTIONS.h"
subroutine COST_THETA( myiter, mytime, mythid )
c ==================================================================
c SUBROUTINE cost_theta
c ==================================================================
c
c o Evaluate cost function contribution of temperature.
c
c started: Christian Eckert eckert@mit.edu 30-Jun-1999
c
c changed: Christian Eckert eckert@mit.edu 25-Feb-2000
c
c - Restructured the code in order to create a package
c for the MITgcmUV.
c
c changed: Patrick Heimbach heimbach@mit.edu 27-May-2000
c
c - set ladinit to .true. to initialise adtbar file
c
c ==================================================================
c SUBROUTINE cost_theta
c ==================================================================
implicit none
c == global variables ==
#include "EEPARAMS.h"
#include "SIZE.h"
#include "PARAMS.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 ==
integer bi,bj
integer i,j,k
integer itlo,ithi
integer jtlo,jthi
integer jmin,jmax
integer imin,imax
integer irec, irectmp
integer levmon
integer levoff
integer iltheta
_RL fctile
_RL fcthread
_RL cmask (1-olx:snx+olx,1-oly:sny+oly)
_RL spval
_RL spmax
character*(80) fnametheta
logical doglobalread
logical ladinit
character*(MAX_LEN_MBUF) msgbuf
#ifdef GENERIC_BAR_MONTH
integer mrec, nyears, iyear
#endif
_RL diagnosfld3d(1-olx:snx+olx,1-oly:sny+oly,nr,nsx,nsy)
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
spval = -1.8
spmax = 40.
c-- Read tiled data.
doglobalread = .false.
ladinit = .false.
#ifdef ALLOW_THETA_COST_CONTRIBUTION
if (optimcycle .ge. 0) then
iltheta = ilnblnk( tbarfile )
write(fnametheta(1:80),'(2a,i10.10)')
& tbarfile(1:iltheta),'.',optimcycle
endif
fcthread = 0. _d 0
#ifdef GENERIC_BAR_MONTH
c-- Loop over month
do irec = 1,min(nmonsrec,12)
nyears=int((nmonsrec-irec)/12)+1
do iyear=1,nyears
mrec=irec+(iyear-1)*12
irectmp=mrec
c-- Read time averages and the monthly mean data.
call ACTIVE_READ_XYZ( fnametheta, tbar, mrec,
& doglobalread, ladinit,
& optimcycle, mythid,
& xx_tbar_mean_dummy )
do bj = jtlo,jthi
do bi = itlo,ithi
do k = 1,nr
do j = jmin,jmax
do i = imin,imax
if(iyear.eq.1) then
tbar_gen(i,j,k,bi,bj) =tbar(i,j,k,bi,bj)
elseif(iyear.eq.nyears) then
tbar(i,j,k,bi,bj) =(tbar_gen(i,j,k,bi,bj)
$ +tbar(i,j,k,bi,bj))/float(nyears)
else
tbar_gen(i,j,k,bi,bj) =tbar_gen(i,j,k,bi,bj)
$ +tbar(i,j,k,bi,bj)
endif
enddo
enddo
enddo
enddo
enddo
enddo
#else
c-- Loop over records.
do irec = 1,nmonsrec
irectmp = irec
c-- Read time averages and the monthly mean data.
call ACTIVE_READ_XYZ( fnametheta, tbar, irec,
& doglobalread, ladinit,
& optimcycle, mythid,
& xx_tbar_mean_dummy )
#endif
c-- Determine the month to be read.
levoff = mod(modelstartdate(1)/100,100)
levmon = (irectmp-1) + levoff
levmon = mod(levmon-1,12)+1
call MDSREADFIELD( tdatfile, cost_iprec, cost_yftype,
& nr, tdat, levmon, mythid)
do bj = jtlo,jthi
do bi = itlo,ithi
c-- Loop over the model layers
fctile = 0. _d 0
do k = 1,nr
c-- Determine the mask on weights
do j = jmin,jmax
do i = imin,imax
cmask(i,j) = cosphi(i,j,bi,bj)
if (tdat(i,j,k,bi,bj) .eq. 0.) then
cmask(i,j) = 0. _d 0
else if (tdat(i,j,k,bi,bj) .lt. spval) then
cmask(i,j) = 0. _d 0
else if (tdat(i,j,k,bi,bj) .gt. spmax) then
cmask(i,j) = 0. _d 0
endif
enddo
enddo
c-- Compute model data 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
fctile = fctile +
& (wthetaLev(i,j,k,bi,bj)*cmask(i,j)*
& (tbar(i,j,k,bi,bj) - tdat(i,j,k,bi,bj))*
& (tbar(i,j,k,bi,bj) - tdat(i,j,k,bi,bj)) )
if ( wthetaLev(i,j,k,bi,bj)*cmask(i,j) .ne. 0. )
& num_temp(bi,bj) = num_temp(bi,bj) + 1. _d 0
diagnosfld3d(i,j,k,bi,bj) =
& (wthetaLev(i,j,k,bi,bj)*cmask(i,j)*
& (tbar(i,j,k,bi,bj) - tdat(i,j,k,bi,bj))*
& (tbar(i,j,k,bi,bj) - tdat(i,j,k,bi,bj)) )
else
diagnosfld3d(i,j,k,bi,bj) = 0.
endif
enddo
enddo
enddo
c-- End of loop over layers.
call MDSWRITEFIELD( 'DiagnosCost_ClimTheta',
& writeBinaryPrec, globalfiles, 'RL', Nr,
& diagnosfld3d, irec, optimcycle, mythid )
fcthread = fcthread + fctile
objf_temp(bi,bj) = objf_temp(bi,bj) + fctile
enddo
enddo
enddo
c-- End of loop over records.
#endif
return
end