!-------------------------------------- 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:
!http://collaboration.cmc.ec.gc.ca/science/rpn.comm/license.html
!
!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;
!if not, you can write to: EC-RPN COMM Group, 2121 TransCanada, suite 500, Dorval (Quebec),
!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 aUV2zdg_c(pu,pv,pzm,pdm),2
!
!**s/r aUV2zdg_c  - Adjoint of UV2zdg_c.ftn. Used by INMI approach.
!
!Author  : Luc Fillion - ARMA/EC - 3 May 07.
!Revision  : Luc Fillion - ARMA/EC - May 2010 - Implementation within v_11_01b.
!
!     -------------------
!
!Arguments
!
      IMPLICIT NONE
#include "taglam4d.cdk"
#include "pardim.cdk"
#include "comdim.cdk"
#include "comlun.cdk"
#include "comcst.cdk"
#include "comct0.cdk"
#include "comsim.cdk"
#include "comgemla.cdk"
#include "comgrd_param.cdk"
!
      real*8 pzm(ni,nflev,nj)
      real*8 pdm(ni,nflev,nj)
      real*8 pu(0:ni+1,nflev,0:nj+1)
      real*8 pv(0:ni+1,nflev,0:nj+1)
!
      integer ji,jj,jk,idim
      real*8 zdlon,zdx,ztheta,ztheta1
      real*8 zcos2(0:nj+1),zcos2h(0:nj+1)
      real*8 zidmu(nj),zidmuh(0:nj-1),zira
!
!!
      call zero((ni+2)*(nj+2)*nflev,pu)
      call zero((ni+2)*(nj+2)*nflev,pv)
!
      zdlon=rdlon_an(1,1)
      zdx=1./(ra*zdlon)
      zira=1./ra
!
      do jj=0,nj-1
        zidmuh(jj)= 1./rdmuh(jj)
      enddo
!
      do jj=1,nj
        zidmu(jj)= 1./rdmu(jj)
        zcos2(jj)=1.0/r1mmu2(jj)
        zcos2h(jj)=1.0/r1mmu2h(jj)
      enddo
!
      do jk=1,nflev
      do jj=1,nj
      do ji=1,ni
        pu(ji,jk,jj)=pu(ji,jk,jj)+pdm(ji,jk,jj)*zcos2(jj)*zdx
        pu(ji-1,jk,jj)=pu(ji-1,jk,jj)-pdm(ji,jk,jj)*zcos2(jj)*zdx
        pv(ji,jk,jj) = pv(ji,jk,jj)+pdm(ji,jk,jj)*zira*zidmuh(jj-1)
        pv(ji,jk,jj-1)=pv(ji,jk,jj-1)-pdm(ji,jk,jj)*zira*zidmuh(jj-1)
        pdm(ji,jk,jj) = 0.0
      enddo
      enddo
      enddo
!
      do jk=1,nflev
      do jj=1,nj
      do ji=1,ni
        pv(ji+1,jk,jj)=pv(ji+1,jk,jj)+pzm(ji,jk,jj)*zcos2h(jj)*zdx
        pv(ji,jk,jj)=pv(ji,jk,jj)-pzm(ji,jk,jj)*zcos2h(jj)*zdx
        pu(ji,jk,jj+1)=pu(ji,jk,jj+1)-pzm(ji,jk,jj)*zira*zidmu(jj)
        pu(ji,jk,jj)=pu(ji,jk,jj)+pzm(ji,jk,jj)*zira*zidmu(jj)
        pzm(ji,jk,jj) = 0.0
      enddo
      enddo
      enddo
!
      return
      end