!-------------------------------------- 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 --------------------------------------
!

      subroutine sugemla 1,12
#if defined (DOC) 
!
!**** *sugemla * - Definition of the geometry of the Limited-Area
!                   analysis and associated metric factors.
!                   
!     Initialization of Limited-Area part of COMGEM
!
!
*Author : Luc Fillion - MSC/CAN - 16 Oct 2004.
*Revision:
*: Luc Fillion - ARMA/EC CAN - 27 Jan 2010. Remove call to sudxdy_lu. Done previously in sugrdlam.ftn
#endif
C
      IMPLICIT NONE
#include "taglam4d.cdk"
#include "pardim.cdk"
#include "comdim.cdk"
#include "comlun.cdk"
#include "comct0.cdk"
#include "comcst.cdk"
#include "comgem.cdk"
#include "comgrd_param.cdk"
#include "comgrd.cdk"
#include "comgemla.cdk"
#include "namgem.cdk"
#include "comgdpar.cdk"
#include "rpnstd.cdk"
!
      logical llprint
      integer ji,jj,njp1
      real*8 zdel,zlonbeg,zlatbeg,zlat
      real*8 ztheta,ztheta1,ztheta2,z1,zcon
      real*8 zdxin(mni_in,mnj_in), zdyin(mni_in,mnj_in)
      real*8 zdx(ni,nj), zdy(ni,nj)
!
!!
      WRITE(NULOUT,FMT='(/,'' SUGEMLA- Geometry of the Limited-Area'')')
!
!*1.  Set Half Lat-Lon of the computational grid
!     ------------------------------------------
!
      llprint = .false.
!
      do jj=-3,nj+3
        rlath_an(jj)=(rlat_an(1,jj)+rlat_an(1,jj+1))*0.5
!        write(nulout,*) 'sugemla: jj,rlath_an(jj)=',jj,rlath_an(jj)
      enddo
!
!*2.  Set Metric Factors
!     ------------------
!
      do ji=-4,ni+4
        do jj=-3,nj+2
          rrcos_an(1,jj)=1.0/cos(rlat_an(1,jj))
          rrcosh_an(1,jj)=1.0/cos(rlath_an(jj))
        enddo
      enddo
      if(llprint) then
        do jj=-3,nj+2
          write(nulout,*) 'sugemla: cos_an(1,jj)=',jj,cos(rlat_an(1,jj))
        enddo
      endif
!
      do jj=-3,nj+2
        ztheta1=rlat_an(1,jj)
        ztheta2=rlat_an(1,jj+1)
        rdmu(jj)=sin(ztheta2)-sin(ztheta1)
!        write(nulout,*) 'sugemla: jj,rlat_an(1,jj)=',jj,rlat_an(1,jj)
!        write(nulout,*) 'sugemla: jj,rlat_an(1,jj+1)=',jj,rlat_an(1,jj+1)
!        write(nulout,*) 'sugemla: jj,rdmu(jj)=',jj,rdmu(jj)
        if(rdmu(jj).le.0.) then
          write(nulout,*) 'SUGEMLA: jj = ',jj
          call abort3d(nulout,'SUGEMLA: rdmu(jj).le.0.')
        endif
      enddo
!
      do jj=-3,nj+2
        ztheta=sin(rlath_an(jj))
        ztheta1=sin(rlath_an(jj+1))
        rdmuh(jj)= ztheta1-ztheta
!        write(nulout,*) 'sugemla: jj,rdmuh(jj)=',jj,rdmuh(jj)
        if(rdmuh(jj).le.0.) then
          write(nulout,*) 'SUGEMLA: jj = ',jj
          call abort3d(nulout,'SUGEMLA: rdmuh(jj).le.0.')
        endif
      enddo
!
      do jj=-3,nj+2
        z1=(cos(rlat_an(1,jj)))**2
        r1mmu2(jj)=z1
        z1=(cos(rlath_an(jj)))**2
        r1mmu2h(jj)=z1
        if(r1mmu2(jj).le.0.) then
          write(nulout,*) 'SUGEMLA: jj = ',jj
          call abort3d(nulout,'SUGEMLA: r1mmu2(jj).le.0.')
        endif
!        write(nulout,*) 'sugemla: jj,r1mmu2(jj),r1mmu2h(jj)=',jj,r1mmu2(jj),r1mmu2h(jj)
        if(r1mmu2h(jj).le.0.) then
          write(nulout,*) 'SUGEMLA: jj = ',jj
          call abort3d(nulout,'SUGEMLA: r1mmu2h(jj).le.0.')
        endif
      enddo
!
! Bi-periodize and symmetrize Metric coefficients etc.
!
      njp1=nj+1
      call mach2(rdmu(1),1,nj,1,njp1)
      call mach2(rdmuh(1),1,nj,1,njp1)
      call mach2(r1mmu2(1),1,nj,1,njp1)
      call mach2(r1mmu2h(1),1,nj,1,njp1)
      call symmetrize_coef
!
! Conversion of wind images to physical winds and vice-versa
! N.B.: Those are geometrical factors of the COMPUTATIONAL grid ==> only computational latitude variation...
!
      do jj = 1, nj
        conphy(jj) = rrcos_an(1,jj)  ! to go from Wind Images to true winds
        conima(jj) = 1.0/conphy(jj)  ! to go from true winds to Wind Images
      enddo
      write(nulout,*) 'sugemla: conphy(25)=',conphy(25)
!
!*3.  Set matrices for tridiagonal solver
!     -----------------------------------
!
      call settrila('P') ! Psi grid
      call settrila('S') ! Scalar grid
!
!*4.  Set matrices for Euclidean Laplacian and its inverse
!     ----------------------------------------------------
!
      call sulapxy       
!
!
      return
      end