!-------------------------------------- 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 --------------------------------------
!
C
C  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
C

      subroutine normsphalf 3,2
*
*Author: Luc Fillion -  ARMA/EC - 24 Jan 08
*           
*
      IMPLICIT NONE
*implicits
#include "comdim.cdk"
#include "comsp.cdk"
#include "comcva.cdk"
#include "comlun.cdk"
*
      integer jla,ji,jj,jk
      integer idum1,idum2,idum3,idum4
      real*8 zmin,zmax
      real*8 zcon
      real*8 zsp(nla,2)
      real*8 zsprpn(ni+2,nj+2)
*
**
      do jk = 1,nksdim
        do jla=1,nla
          zsp(jla,1) = sp(jla,1,jk)
          zsp(jla,2) = sp(jla,2,jk)
        enddo
        call transp(zsp,zsprpn,'2RPN') ! zsprpn output
!
        zcon = sqrt(2.0)
        do jj=1,nj+2
          zsprpn(1,jj) = zsprpn(1,jj)*zcon
        enddo
!
        do ji=1,ni+2
          zsprpn(ji,1) = zsprpn(ji,1)*zcon
        enddo
!
        zcon = 1./2.0
!
        do jj=1,nj+2
          do ji=1,ni+2
            zsprpn(ji,jj) = zcon*zsprpn(ji,jj)
          enddo
        enddo
!
        call transp(zsp,zsprpn,'2VAR')
        do jla=1,nla
          sp(jla,1,jk) = zsp(jla,1)
          sp(jla,2,jk) = zsp(jla,2)
        enddo
      enddo
!
!      call maxmin(sp,nla,nflev,2,zmin,zmax,
!     &            idum1,idum2,idum3,idum4,'normsphalf  ',
!     &            'SP')
!
      return
      end