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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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!CANADA, H9P 1J3; or send e-mail to service.rpn@ec.gc.ca
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!

      subroutine initgdla1(pfld,kni,knj,knk) 10,2
!
      IMPLICIT NONE
#if defined (DOC)
!
!s/r initgdla1 : Adjusts input field so as to be compatible with Limited-Area Boundary Conditions.
!
!     Author L. Fillion  - ARMA/EC - 5 Oct 2007.
!Revision:
!
#endif
!
#include "taglam4d.cdk"
#include "pardim.cdk"
#include "comdim.cdk"
#include "comlun.cdk"
#include "comcst.cdk"
#include "comgd0.cdk"
#include "comgdpar.cdk"
#include "namgdpar.cdk"
#include "compdg.cdk"
#include "comgem.cdk"
#include "comgrd_param.cdk"
#include "comgrd.cdk"
!
      integer kni,knj,knk
      real*8 pfld(kni,knk,knj)
!
      character*1 clpart
      logical llbiais,llfilt
      integer ji,jj,jlev,jvar,inij,inip1,injp1
      integer idum1,idum2,idum3,idum4,itrunc,inbvar
      real*8  zmin,zmax
      real*8 zfld(kni,knk,knj)
      real*8 zfilt(kni,knk,knj)
      real*8 zwrksp(nla,2,nflev)
!
!!
      write(nulout,*) 'Begin INITGDLA1'
!
      llfilt = .false.
      clpart = 'H'
      itrunc = ntrunc
      llbiais = .false.
      inip1 = kni+1
      injp1 = knj+1
!
!*1.  Bi-periodicization
!     ------------------
!
      do jlev=1,knk
      do ji=1,kni
      do jj=1,knj
        zfld(ji,jlev,jj)=pfld(ji,jlev,jj)
      enddo
      enddo
      enddo
!
      call mach3(zfld,kni,knj,knk,inip1,injp1) 
!
!*2.  Spectral filtering
!     ------------------
!
      if(llfilt) then
        write(nulout,*) 'initgdla1: apply spectral filtering'
        do jlev=1,knk
          do ji=1,kni
            do jj=1,knj
              zfilt(ji,jlev,jj) = zfld(ji,jlev,jj)
            enddo
          enddo
        enddo
!
        call gdtruncr(zfilt,zwrksp,'T',itrunc,clpart,.false.,knk)
!
        do jlev=1,knk
          do ji=1,kni
          do jj=1,knj
            zfld(ji,jlev,jj) = zfilt(ji,jlev,jj)
          enddo
          enddo
        enddo
      endif
!
      do jlev=1,knk
      do ji=1,kni
      do jj=1,knj
         pfld(ji,jlev,jj)=zfld(ji,jlev,jj)
      enddo
      enddo
      enddo
!
      return
      end