!-------------------------------------- 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
!version 3 or (at your option) any later version that should be found at:
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!
!This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
!without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
!See the above mentioned License/Disclaimer for more details.
!You should have received a copy of the License/Disclaimer along with this software;
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!CANADA, H9P 1J3; or send e-mail to service.rpn@ec.gc.ca
!-------------------------------------- LICENCE END --------------------------------------
!
!
!  X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
!

      subroutine ainmi_pc(pdpsi,pdchi,pdvort,pddiv),6
!
!**s/r ainmi_pc  - Adjoint of inmi_pc.ftn. Used by INMI approach.
!
!Author  : Luc Fillion - ARMA/EC - 1 May 2007.
!Revision: 
! Luc Fillion - ARMA/EC - May 2010. Implement in v_11_01b.
!
!     -------------------
!
!Arguments
! input sensitivity
!  pdpsi = del(psi) in gridpoint space
!  pdchi = del(chi) in gridpoint space
! output sensitivity
!  pdvort = del(vort) in vertical mode space
!  pddiv  = del(div) in vertical mode space
!
      IMPLICIT NONE
!
#include "taglam4d.cdk"
#include "pardim.cdk"
#include "comdim.cdk"
#include "comcst.cdk"
#include "comlun.cdk"
#include "comode.cdk"
!
      real*8 pdpsi(ni,nflev,nj)
      real*8 pdchi(ni,nflev,nj)
      real*8 pdvort(ni,nflev,nj)
      real*8 pddiv(ni,nflev,nj)
!
      character*3 clvar
      character*8 clletiket
      integer ji,jj,jk,jmode
      real*8 zf0,zf02,zcon,zicon
      real*8 zvert1(nflev),zvert2(nflev)
      real*8 zw2d1(ni,nj)
      real*8 zw2d2(ni,nj)
      real*8 zwh(ni,nj)
      real*8 zwh2(ni,nj)
!
!!
      call zero(ni*nj*nflev,pdvort)
      call zero(ni*nj*nflev,pddiv)
!
      zf0=2.*romega
      zf02=zf0**2
!
!*1.  Adjoint of: Transform to gridpoint space
!     ----------------------------------------
! Psi
      do jj=1,nj
        do ji=1,ni
          call zero(nflev,zvert1)
          do jk=1,nflev
            zvert1(jk)=pdpsi(ji,jk,jj)
          enddo
          call mxv(zvert2,tvmat,zvert1,nflev,nflev)
          do jk=1,nflev
            pdpsi(ji,jk,jj) = zvert2(jk)
!            pdpsi(ji,jk,jj) = pdpsi(ji,jk,jj)+zvert2(jk)
          enddo
        enddo
      enddo
!
! Chi
      do jj=1,nj
        do ji=1,ni
          call zero(nflev,zvert1)
          do jk=1,nflev
            zvert1(jk)=pdchi(ji,jk,jj)
          enddo
          call mxv(zvert2,tvmat,zvert1,nflev,nflev)
          do jk=1,nflev
            pdchi(ji,jk,jj) = zvert2(jk)
!            pdchi(ji,jk,jj) = pdchi(ji,jk,jj)+zvert2(jk)
          enddo
        enddo
      enddo
!
!*2.  Adjoint of: Loop on vertical normal modes
!     -----------------------------------------
!
      do jmode=1,nvmod
        do ji=1,ni
          do jj=1,nj
            zwh(ji,jj)=pdpsi(ji,jmode,jj)
          enddo
        enddo
!ping        call ainvlap(zwh2,zwh,'P')
        do ji=1,ni
          do jj=1,nj
            pdvort(ji,jmode,jj)=zwh2(ji,jj)
          enddo
        enddo
!
        do ji=1,ni
          do jj=1,nj
            zwh(ji,jj)=pdchi(ji,jmode,jj)
          enddo
        enddo
!ping        call ainvlap(zwh2,zwh,'S')
        do ji=1,ni
          do jj=1,nj
            pddiv(ji,jmode,jj)=zwh2(ji,jj)
          enddo
        enddo
      enddo
!
      return
      end