!-------------------------------------- LICENCE BEGIN ------------------------------------
!Environment Canada - Atmospheric Science and Technology License/Disclaimer,
! version 3; Last Modified: May 7, 2008.
!This is free but copyrighted software; you can use/redistribute/modify it under the terms
!of the Environment Canada - Atmospheric Science and Technology License/Disclaimer
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!without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
!See the above mentioned License/Disclaimer for more details.
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!CANADA, H9P 1J3; or send e-mail to service.rpn@ec.gc.ca
!-------------------------------------- LICENCE END --------------------------------------
!
subroutine tovs_calc_jo(pjo,llprint) 1,3
#if defined (doc)
!
!**s/r tovs_calc_jo - computation of jo and the residuals to the tovs observations
! (adapted from part of code of dobstovs)
!
!
!author : j. halle *cmda/aes december 14, 2004
!
!revision 001 : a. beaulne *cmda/smc june 2006
! -modifications for AIRS (codtyp 183)
!
!revision 002 : r. sarrazin cmda april 2008
! -modifications for CSR (codtyp 185)
!
!revision 003 : s. heilliette
! -modifications for IASI (codtyp 186)
!
! -------------------
! purpose:
!
!arguments
! pjo: total value of jo for tovs
!
#endif
use mod_tovs
implicit none
!implicits
#include "comdimo.cdk"
#include "comlun.cdk"
#include "comoabdy.cdk"
#include "comoahdr.cdk"
#include "comoba.cdk"
#include "partov.cdk"
#include "comtov.cdk"
#include "comtovst.cdk"
#include "cvcord.cdk"
#include "comvarqc.cdk"
integer :: isens, indxchn, indxtovs
real*8 zoer
real*8 dlsum
real*8 pjo, zdtb
real*8 zjon,zgami,zqcarg,zpost
real*8 zjoch (0:jpch,jpnsat)
real*8 zavgnrm(0:jpch,jpnsat)
integer j, i, isat, krtid, io, jf, nchanperline, indxs, indxe
integer ibegin, ibeginob, ilast, ilastob, jj
integer inobsjo, incanjo
integer jo, jdata, idata, idatend, idatyp
integer jk, jn, ichn, ichncma, jl, indx
integer kfailtot
integer kfail(jppf*jpnsat)
integer inobsch(0:jpch,jpnsat)
integer lcanjo(jpch)
logical :: llprint
integer isrcheq
external isrcheq
external abort3d
if(nobtov.eq.0) return ! exit if there are not tovs data
! 1. Computation of (hx - z)/sigma for tovs data only
! . ------------------------------------------------
100 continue
dlsum = 0.
inobsjo = 0
kfailtot = 0
do j = 1, nsensors
do i = 0, jpch
inobsch(i,j) = 0
zjoch (i,j) = 0.0
zavgnrm(i,j) = 0.0
enddo
enddo
! loop over all files
do jf = 1, nfiles
if ( cfamtyp(jf).eq.'TO' .and. nbegintyp(jf).gt.0 ) then
ibegin = nbegintyp(jf)
ilast = nendtyp (jf)
ibeginob = mobdata(ncmobs,ibegin)
ilastob = mobdata(ncmobs,ilast )
do jo = ibeginob, ilastob
! . 1.1 Extract general information for this observation point
! . ------------------------------------------------------
! only process radiance data (data type=[164,168,180,181,182,183,185,186]) to be assimilated?
idatyp = mod(mobhdr(ncmity,jo),1000)
if ( idatyp .eq. 164 .or. &
idatyp .eq. 168 .or. &
idatyp .eq. 180 .or. &
idatyp .eq. 181 .or. &
idatyp .eq. 182 .or. &
idatyp .eq. 183 .or. &
idatyp .eq. 185 .or. &
idatyp .eq. 186 ) then
indxtovs = ltovsno(jo)
if ( indxtovs .eq. 0 ) then
write(nulout,fmt=9203)
9203 format(' tovs_calc_jo: error with indxtovs')
call abort3d(nulout,'tovs_calc_jo ')
endif
if (rttov_errorstatus(indxtovs) .lt. 20 ) then
idata = mobhdr(ncmrln,jo)
idatend = mobhdr(ncmnlv,jo) + idata - 1
isens = lsensor(indxtovs)
do jdata= idata, idatend
if ( mobdata(ncmass,jdata).eq.1 ) then
ichn = nint(robdata8(ncmppp,jdata))
ichn = max(0,min(ichn,jpch+1))
ichncma = max(0,min(ichn,jpch+1))
if(idatyp.ne.183 .and. idatyp.ne.186) ichn=ichn-chanoffset(isens)
indxchn = isrcheq (ichan(:,isens),nchan(isens),ichn)
if ( indxchn .eq. 0 ) then
write(nulout,fmt=9202)
9202 format(' tovs_calc_jo: error with channel number')
call abort3d(nulout,'tovs_calc_jo ')
endif
zdtb = radiance_d (indxtovs) % out(indxchn)-robdata8(ncmprm,jdata)
if ( ldbgtov ) then
write(nulout,'(a,i4,2f8.2,f6.2)') ' ichn,sim,obs,diff= ', &
ichn, radiance_d (indxtovs) % out(indxchn), &
robdata8(ncmprm,jdata), zdtb
endif
zoer = robdata8(ncmoer,jdata)
robdata8(ncmoma,jdata) = zdtb/zoer
robdata8(ncmomi,jdata) = robdata8(ncmoma,jdata)
if (.not. lvarqc) then
dlsum = dlsum &
+ (robdata8(ncmoma,jdata)* &
robdata8(ncmoma,jdata))/2.
robdata8(ncmomn,jdata) = &
robdata8(ncmoma,jdata)
else
! compute contribution of data with varqc
zgami = robdata(ncmpob,jdata)
zjon = (robdata8(ncmoma,jdata)* &
robdata8(ncmoma,jdata))/2.
zqcarg = zgami + exp(-1.0*zjon)
zpost = zgami/zqcarg
robdata8(ncmomn,jdata) = &
robdata8(ncmoma,jdata)*(1. - zpost)
dlsum= dlsum - log(zqcarg/(zgami+1.))
endif
inobsjo = inobsjo + 1
inobsch(ichncma,isens) = inobsch(ichncma,isens) + 1
zjoch(ichncma,isens) = &
zjoch(ichncma,isens) + &
robdata8(ncmoma,jdata)* &
robdata8(ncmoma,jdata)
zavgnrm(ichncma,isens) = &
zavgnrm(ichncma,isens) + &
robdata8(ncmoma,jdata)
endif
enddo
else
kfailtot = kfailtot + 1
endif
endif
enddo
endif
enddo
! 2. Close up, print summary
! . -----------------------
200 continue
pjo = dlsum
! printout of mean jo and normalized average for each sensor.
nchanperline = 18
if ( llprint .and. inobsjo .gt. 0 ) then
write(nulout,fmt=9000)
do krtid = 1, nsensors
do i = 1, jpch
inobsch(0,krtid) = inobsch(0,krtid) + &
inobsch(i,krtid)
zjoch(0,krtid) = zjoch(0,krtid) + &
zjoch(i,krtid)
zavgnrm(0,krtid) = zavgnrm(0,krtid) + &
zavgnrm(i,krtid)
enddo
enddo
if ( kfailtot .gt. 0 ) then
write(nulout,'(/1x," rttov failures : ",i10)') kfailtot
endif
do jl = 1, nsensors
incanjo = 0
do i = 0, jpch
if ( inobsch(i,jl) .ne. 0 ) then
incanjo = incanjo + 1
lcanjo(incanjo) = i
endif
enddo
if ( incanjo .ne. 0 ) then
write(nulout,'(/1x,"sensor #",i2,". platform: ",a, &
& "instrument: ",a)') &
jl, csatid(jl), cinstrumentid(jl)
do j = 1, incanjo, nchanperline
indxs = j
indxe = min(j+nchanperline-1,incanjo)
if ( j .eq. 1 ) then
write(nulout,'(1x,"channel",t13," all",17i6)') &
(lcanjo(i),i=indxs+1,indxe)
else
write(nulout,'(1x,"channel",t13,18i6)') &
(lcanjo(i),i=indxs,indxe)
endif
write(nulout,'(1x,"no. obs.",t13,18i6)') &
(inobsch(lcanjo(i),jl),i=indxs,indxe)
write(nulout,'(1x,"mean jo",t13,18f6.2)') &
(zjoch(lcanjo(i),jl)/max(1,inobsch(lcanjo(i),jl)) &
,i=indxs,indxe)
write(nulout,'(1x,"norm. bias",t13,18f6.2,/)') &
(zavgnrm(lcanjo(i),jl)/max(1,inobsch(lcanjo(i),jl)) &
,i=indxs,indxe)
enddo
endif
enddo
endif
9000 format(//,10x,"-tovs_calc_jo: computing jo and residuals to tovs" &
& ," observations")
end subroutine tovs_calc_jo