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!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
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!
C
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C
subroutine abal0(ppsi,pchi,pvort,ldhelm),5
*
***s/r abal0 - Adjoint of lbal0. Used by INMI approach.
* - In: Sensitivitiy of (Psi,Chi,T,q,ps)
* - Out: Sensitivitiy of (Psi,Chiu,Tu,q,psu)
*
*Author : Luc Fillion - CGD/NCAR - Jul 99
*Revision: Luc Fillion - MSC- 29 Aug 2005 - Add diabatic forcing term
*Revision: Luc Fillion - ARMA/EC - May 2010 - Implement in v_11_01b.
*
* -------------------
** Purpose: Used for LA-XD-Var analysis
*
*Arguments
*
implicit none
logical ldhelm
real*8 ppsi(ni,nflev,nj)
real*8 pchi(ni,nflev,nj)
real*8 pvort(ni,nflev,nj)
*
#include "taglam4d.cdk"
#include "comdim.cdk"
#include "comcst.cdk"
#include "comct0.cdk"
#include "comcva.cdk"
#include "comsim.cdk"
#include "comgd0.cdk"
#include "comcorr.cdk"
#include "compdg.cdk"
!
!
logical llmass,llchib,lldiab,llconv,llcond
logical llfplane
integer ji,jj,jk,ipt,jpt,jla,ik,jband,jm,ila
integer jk1,jk2
integer jrow,jcol,nim,njm,nijkm
integer idim
real*8 zcoriolis
real*8 zgdpsi(ni,nflev,nj)
real*8 zgdchib(ni,nflev,nj)
real*8 zpsiomeg(ni,nflev,nj)
real*8 zchib(ni,nflev,nj)
real*8 zp(ni,nflev,nj)
real*8 zpnl(ni,nflev,nj)
real*8 tt0_s(ni,nflev,nj)
real*8 q0_s(ni,nflev,nj)
real*8 ztb(ni,nflev,nj)
real*8 zpsb(ni,nj)
real*8 gps0_s(ni,1,nj)
!
!!
llmass=.true.
llfplane=.true.
!
nijkm = ni*nflev*nj
call zero(nijkm,zgdpsi)
call zero(nijkm,zp)
!
!*3 Adjoint of: Add Balanced and Unbalanced components
! --------------------------------------------------
!
do jj=1,nj
do ji=1,ni
do jk=1,nflev
zchib(ji,jk,jj)=pchi(ji,jk,jj)
tt0_s(ji,jk,jj)=tt0(ji,jk,jj)
q0_s(ji,jk,jj)=q0(ji,jk,jj)
enddo
gps0_s(ji,1,jj)=gps0(ji,1,jj)
enddo
enddo
!
!*2.2 Adjoint of: Compute Balanced Chi: Result in ppsi
!
if(linmi) then
lldiab = ldiabatic
call ainmi_Chi(ppsi,zchib,lldiab)
endif
!
! Adjoint of: Transfer to tt0, gps0, ready for inmi
!
do jj=1,nj
do ji=1,ni
do jk=1,nflev
ztb(ji,jk,jj) = tt0(ji,jk,jj)
tt0(ji,jk,jj) = 0.0
enddo
zpsb(ji,jj) = gps0(ji,1,jj)
gps0(ji,1,jj) = 0.0
enddo
enddo
!
!*2.1 Adjoint of: 1st Order Baer-Tribbia
!
if(llmass) then
if(nflev.eq.1) then
do jj=1,nj ! Barotropic option
do ji=1,ni
do jk1=1,nflev
zp(ji,jk1,jj) = 0.0
zp(ji,jk1,jj) = zp(ji,jk1,jj)+tt0(ji,jk1,jj)
enddo
enddo
enddo
else
do jj=1,nj ! Baroclinic option
do ji=1,ni
do jk1=1,nflev
zp(ji,jk1,jj) = 0.0
do jk2=1,nflev
zp(ji,jk1,jj) = zp(ji,jk1,jj)+
& ptot(jk2,jk1,jj)*ztb(ji,jk2,jj)
enddo
enddo
do jk1=1,nflev
zp(ji,jk1,jj) = zp(ji,jk1,jj)+
& ptot(nflev+1,jk1,jj)*zpsb(ji,jj)
enddo
enddo
enddo
endif
!
if(ldhelm) then
if(linmi) then
do jj=1,nj
do ji=1,ni
do jk=1,nflev
zpnl(ji,jk,jj) = zp(ji,jk,jj)
enddo
enddo
enddo
lldiab=.false.
call ainmi_P(ppsi,zpnl,lldiab)
endif
call alinbal_la(ppsi,zp,llfplane)
else
do jk=1,nflev
do jj=1,nj
do ji=1,ni
pvort(ji,jk,jj) = pvort(ji,jk,jj)+
& zp(ji,jk,jj)
enddo
enddo
enddo
endif
!
!*1. Adjoint of: Save Unbalanced part
! --------------------------------
!
do jj=1,nj
do ji=1,ni
do jk=1,nflev
tt0(ji,jk,jj) = tt0(ji,jk,jj) + tt0_s(ji,jk,jj)
q0(ji,jk,jj) = q0(ji,jk,jj) + q0_s(ji,jk,jj)
enddo
gps0(ji,1,jj) = gps0(ji,1,jj) + gps0_s(ji,1,jj)
enddo
enddo
endif
!
return
end