!-------------------------------------- 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.
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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_soldiv(pp,pvort,pddiv),2
!
!**s/r ainmi_soldiv  - Adjoint of inmi_soldiv.ftn. Used by INMI approach.
!
!Author  : Luc Fillion - ARMA/EC - 2 May 2007.
!Revision: 
! Luc Fillion - ARMA/EC - May 2010. Implement in v_11_01b.
!
!     -------------------
!
!Arguments
!
      IMPLICIT NONE
!
#include "taglam4d.cdk"
#include "pardim.cdk"
#include "comdim.cdk"
#include "comcst.cdk"
#include "comlun.cdk"
#include "comode.cdk"
!
      real*8 pp(ni,nflev,nj)
      real*8 pvort(ni,nflev,nj)
      real*8 pddiv(ni,nflev,nj)
!
      integer ji,jj,jk
      real*8 zf0,zf02,zcon,zicon
      real*8 zw2d1(ni,nj)
      real*8 zw2d2(ni,nj)
      real*8 zw2d3(ni,nj)
!
!!
      call zero(ni*nj*nflev,pp)
      call zero(ni*nj*nflev,pvort)
!
      zf0=2.*romega
      zf02=zf0**2
!
!*1.  Adjoint of: Loop on vertical normal modes
!     -----------------------------------------
!
      do jk=1,nvmod
!
!       Adjoint of: Convert to del(div)
!
        do jj=1,nj
          do ji=1,ni
            zw2d1(ji,jj)=pddiv(ji,jk,jj)/eqdepth(jk)
          enddo
        enddo
!
!       Adjoint of: Solve for dPhig/dt
!
        zcon = -zf02/eqdepth(jk)
!ping        call ainvhelmc(zw2d3,zcon,zw2d1,'S')
!
!       Adjoint of: Build rhs of del(div) (eqn. 4.35, T88)
!
        do ji=1,ni
          do jj=1,nj
            pvort(ji,jk,jj)=-zf0*zw2d3(ji,jj)
            zw2d2(ji,jj)=zw2d3(ji,jj)
          enddo
        enddo
!
!ping        call alap(zw2d1,zw2d2,'S')
!
        do ji=1,ni
          do jj=1,nj
            pp(ji,jk,jj)=zw2d1(ji,jj)
          enddo
        enddo
      enddo
!
      return
      end