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!                     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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***s/r v4d_rwobfr- 1)Read (Write) from (on) OBSERVATIONS WA file at required time step 
*                - 2)Read (Write) from (on) FORCINGS     WA file at required time step 
*
#include "model_macros_f.h"
*

      subroutine v4d_rwobfr (F_icode) 4,28
*
#include "impnone.cdk"
*
      integer F_icode
*
*author
*     M.Tanguay
*
*revision
* v2_10 - Tanguay M.        - initial MPI version
* v2_31 - Tanguay M.        - change parameters of v4d_rwfld 
* v3_01 - Morneau J.        - add V4dg_rwob.eq.2 to write
*                             observations from OBSERVATION VMM variable
*
*object
*     see id section
*	
*arguments
*  Name        I/O                 Description
*----------------------------------------------------------------
* F_icode      I                   If F_icode=1 :Treat OBSERVATIONS 
*                                  If F_icode=2 :Treat FORCINGS 
*----------------------------------------------------------------
*
*implicits
#include "glb_ld.cdk"
#include "lun.cdk"
#include "v4dg.cdk"
#include "v4d_vmm.cdk"
#include "vt1.cdk"
*
*modules
      integer vmmlod,vmmget,vmmuld
      external vmmlod,vmmget,vmmuld
*
      integer pnerr, pnlkey1(4)
*
      logical plpr_L
*
      real work(l_ni,l_nj,l_nk)
*
*     ----------------------------------------------------
*     Flag to trace storing and retrieving of observations 
*     ----------------------------------------------------
      plpr_L = .false.
      plpr_L = plpr_L.and.Lun_out.gt.0
*
*     ------------------
*     Treat OBSERVATIONS 
*     ------------------
      if(F_icode.eq.1) then
*
         if(V4dg_rwob.eq.0) then
         if (lun_out > 0) write(lun_out,9000)
*        ----------------------------
*        Read OBSERVATIONS at time T1 
*        ----------------------------
*
         pnlkey1(1) = VMM_KEY(ut1r )
         pnlkey1(2) = VMM_KEY(vt1r )
         pnlkey1(3) = VMM_KEY(tpt1r)
         pnlkey1(4) = VMM_KEY(st1r )
*
*        - - - - - - - - - - - - - 
         pnerr = vmmlod(pnlkey1,4)
*        - - - - - - - - - - - - - 
         pnerr = VMM_GET_VAR(ut1r )
         pnerr = VMM_GET_VAR(vt1r )
         pnerr = VMM_GET_VAR(tpt1r)
         pnerr = VMM_GET_VAR(st1r )
*
*        NLM or TLM run
*        --------------
         if(V4dg_di_L.or.V4dg_tl_L) then
*
            call v4d_rwfld (ut1r, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'UT1R', V4dg_ad_L,0,-1)
*
            call v4d_rwfld (vt1r, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'VT1R', V4dg_ad_L,0,-1)
*
            call v4d_rwfld (tpt1r,work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'TPT1R',V4dg_ad_L,0,-1)
*
            call v4d_rwfld (st1r, work,l_ni,l_nj,LDIST_DIM,1,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'ST1R', V4dg_ad_L,0,-1)
*
*        ADJ run
*        -------
         elseif(V4dg_ad_L) then
*
            call v4d_rwfld (st1r, work,l_ni,l_nj,LDIST_DIM,1,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'ST1R ',V4dg_ad_L,
     %                   l_ni*l_nj*l_nk,-1)
*
            call v4d_rwfld (tpt1r,work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'TPT1R',V4dg_ad_L,
     %                   l_ni*l_nj*l_nk,-1)
*
            call v4d_rwfld (vt1r, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'VT1R ',V4dg_ad_L,
     %                   l_ni*l_nj*l_nk,-1)
*
            call v4d_rwfld (ut1r, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'UT1R ',V4dg_ad_L,
     %                   l_ni*l_nj     ,-1)
*
         endif
*
         elseif(V4dg_rwob.eq.1) then
         if (lun_out > 0) write(lun_out,9010)
*        -----------------------------
*        Write OBSERVATIONS at time T1 
*        -----------------------------
*
         pnlkey1(1) = VMM_KEY(ut1 )
         pnlkey1(2) = VMM_KEY(vt1 )
         pnlkey1(3) = VMM_KEY(tpt1)
         pnlkey1(4) = VMM_KEY(st1 )
*
*        - - - - - - - - - - - - -
         pnerr = vmmlod(pnlkey1,4)
*        - - - - - - - - - - - - -
         pnerr = VMM_GET_VAR(ut1 )
         pnerr = VMM_GET_VAR(vt1 )
         pnerr = VMM_GET_VAR(tpt1)
         pnerr = VMM_GET_VAR(st1 )
*
            call v4d_rwfld (ut1, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'UT1 ',V4dg_ad_L,0,1)
*
            call v4d_rwfld (vt1, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'VT1 ',V4dg_ad_L,0,1)
*
            call v4d_rwfld (tpt1,work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'TPT1',V4dg_ad_L,0,1)
*
            call v4d_rwfld (st1, work,l_ni,l_nj,LDIST_DIM,1,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'ST1 ',V4dg_ad_L,0,1)
*
         elseif(V4dg_rwob.eq.2) then
         if (lun_out > 0) write(lun_out,9010)
*        -----------------------------
*        Write OBSERVATIONS at time T1 
*        -----------------------------
*
         pnlkey1(1) = VMM_KEY(ut1r )
         pnlkey1(2) = VMM_KEY(vt1r )
         pnlkey1(3) = VMM_KEY(tpt1r)
         pnlkey1(4) = VMM_KEY(st1r )
*
*        - - - - - - - - - - - - -
         pnerr = vmmlod(pnlkey1,4)
*        - - - - - - - - - - - - -
         pnerr = VMM_GET_VAR(ut1r )
         pnerr = VMM_GET_VAR(vt1r )
         pnerr = VMM_GET_VAR(tpt1r)
         pnerr = VMM_GET_VAR(st1r )
*
         call v4d_rwfld (ut1r, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'UT1R',V4dg_ad_L,0,1)
*
         call v4d_rwfld (vt1r, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'VT1R',V4dg_ad_L,0,1)
*
         call v4d_rwfld (tpt1r,work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'TPT1R',V4dg_ad_L,0,1)
*
         call v4d_rwfld (st1r, work,l_ni,l_nj,LDIST_DIM,1,
     %                   V4dg_iunob,V4dg_addob,plpr_L,'ST1R ',V4dg_ad_L,0,1)
*
         endif
*
      endif
*
*     --------------
*     Treat FORCINGS 
*     --------------
      if(F_icode.eq.2) then 
*
         if(V4dg_rwfr.eq.0) then
         if (lun_out > 0) write(lun_out,9050)
*        -----------------------------------------
*        Read fields needed in FORCINGS at time T1 
*        -----------------------------------------
*
         pnlkey1(1) = VMM_KEY(ut1c )
         pnlkey1(2) = VMM_KEY(vt1c )
         pnlkey1(3) = VMM_KEY(tpt1c)
         pnlkey1(4) = VMM_KEY(st1c )
*
*        - - - - - - - - - - - - - 
         pnerr = vmmlod(pnlkey1,4)
*        - - - - - - - - - - - - - 
         pnerr = VMM_GET_VAR(ut1c )
         pnerr = VMM_GET_VAR(vt1c )
         pnerr = VMM_GET_VAR(tpt1c)
         pnerr = VMM_GET_VAR(st1c )
*
*        NLM or TLM run
*        --------------
         if(V4dg_di_L.or.V4dg_tl_L) then
*
            call v4d_rwfld (ut1c,work, l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'UT1C ',V4dg_ad_L,0,-1)
*
            call v4d_rwfld (vt1c,work, l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'VT1C ',V4dg_ad_L,0,-1)
*
            call v4d_rwfld (tpt1c,work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'TPT1C',V4dg_ad_L,0,-1)
*
            call v4d_rwfld (st1c,work, l_ni,l_nj,LDIST_DIM,1,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'ST1C ',V4dg_ad_L,0,-1)
*
         elseif(V4dg_ad_L) then
*
            call v4d_rwfld (st1c, work,l_ni,l_nj,LDIST_DIM,1,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'ST1C ',V4dg_ad_L,
     %                   l_ni*l_nj*l_nk,-1)
*
            call v4d_rwfld (tpt1c,work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'TPT1C',V4dg_ad_L,
     %                   l_ni*l_nj*l_nk,-1)
*
            call v4d_rwfld (vt1c, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'VT1C ',V4dg_ad_L,
     %                   l_ni*l_nj*l_nk,-1)
*
            call v4d_rwfld (ut1c, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'UT1C ',V4dg_ad_L,
     %                   l_ni*l_nj     ,-1)
*
         endif
*
         elseif(V4dg_rwfr.eq.1) then
         if (lun_out > 0) write(lun_out,9060)
*        ------------------------------------------
*        Write fields needed in FORCINGS at time T1 
*        ------------------------------------------
*
         pnlkey1(1) = VMM_KEY(ut1 )
         pnlkey1(2) = VMM_KEY(vt1 )
         pnlkey1(3) = VMM_KEY(tpt1)
         pnlkey1(4) = VMM_KEY(st1 )
*
*        - - - - - - - - - - - - -
         pnerr = vmmlod(pnlkey1,4)
*        - - - - - - - - - - - - -
         pnerr = VMM_GET_VAR(ut1 )
         pnerr = VMM_GET_VAR(vt1 )
         pnerr = VMM_GET_VAR(tpt1)
         pnerr = VMM_GET_VAR(st1 )
*
            call v4d_rwfld (ut1, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'UT1 ',V4dg_ad_L,0,1)
*
            call v4d_rwfld (vt1, work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'VT1 ',V4dg_ad_L,0,1)
*
            call v4d_rwfld (tpt1,work,l_ni,l_nj,LDIST_DIM,l_nk,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'TPT1',V4dg_ad_L,0,1)
*
            call v4d_rwfld (st1, work,l_ni,l_nj,LDIST_DIM,1,
     %                   V4dg_iunfr,V4dg_addfr,plpr_L,'ST1 ',V4dg_ad_L,0,1)
*
         endif
*
      endif
*
      pnerr = vmmuld(-1,0)
      if (lun_out > 0) write(Lun_out,9900)
*
 9000 format(
     +/,'BEGIN READ OBSERVATION WA FILES         (V4D_RWOBFR)',
     +/,'===================================================')
 9010 format(
     +/,'BEGIN WRITE OBSERVATION WA FILES        (V4D_RWOBFR)',
     +/,'===================================================')
 9050 format(
     +/,'BEGIN READ FORCINGS WA FILES           (V4D_RWOBFR)',
     +/,'===================================================')
 9060 format(
     +/,'BEGIN WRITE FORCINGS WA FILES          (V4D_RWOBFR)',
     +/,'===================================================')
 9900 format(
     +/,'END R/W OBS/FORCING WA FILES            (V4D_RWOBFR)',
     +/,'===================================================')
*
      return
      end