CCC $Header$ 
CCC  TOP 1.0 , LOCEAN-IPSL (2005) 
C This software is governed by CeCILL licence see modipsl/doc/NEMO_CeCILL.txt 
C ---------------------------------------------------------------------------
CDIR$ LIST
      SUBROUTINE trcdit(kt,kindic)
CCC---------------------------------------------------------------------
CCC
CCC                       ROUTINE trcdit
CCC                     ******************
CCC
CCC  Purpose :
CCC  ---------
CCC     Standard output of passive tracer : concentration fields
CCC
CCC
CC   Method :
CC   -------
CC
CC	At the beginning of the first time step (nit000), define all
CC	the NETCDF files and fields for concentration of passive tracer
CC
CC      At each time step call histdef to compute the mean if necessary
CC	Each nwrite time step, output the instantaneous or mean fields
CC
CC	IF kindic <0, output of fields before the model interruption.
CC      IF kindic =0, time step loop
CC      IF kindic >0, output of fields before the time step loop
CC
CC
CC
CC   Input :
CC   -----
CC      argument
CC              kt              : time step
CC		kindic		: indicator of abnormal termination
CC      COMMON
CC            /comcoh/          : orthogonal curvilinear coordinates
CC                                and scale factors
CC            /comask/          : masks, bathymetry
CC            /cottrc/          : passive tracers fields (before,now
CC                                  ,after)
CC            /citcdf/		: NETCDF variables
CC
CC   Output :
CC   ------
CC      file
CC              "clhstnam" files : one for concentration
CC
CC
CC   Workspace :
CC   ---------
CC      local
CC
CC   EXTERNAL :
CC   --------
CC	prihre, hist..., dianam
CC
CC   MODIFICATIONS:
CC   --------------
CC      original  : 95-01  passive tracers  (M. Levy)
CC      additions : 98-01 (C. Levy) NETCDF format using ioipsl interface
CC      additions : 99-01 (M.A. Foujols) adapted for passive tracer
CC      additions : 99-09 (M.A. Foujols) split into three parts
CC----------------------------------------------------------------------
CC parameters and commons
CC ======================
      USE ioipsl
CDIR$ NOLIST
      USE oce_trc
      USE trc
      USE dianam    ! build name of file (routine)
      IMPLICIT NONE
CDIR$ LIST
CC----------------------------------------------------------------------
CC local declarations
CC ==================
      INTEGER kt, kindic
      REAL xjulian

#    if defined key_passivetrc

      INTEGER jn
      LOGICAL clp
C
      CHARACTER*40 clhstnam
      CHARACTER*40 clop
      CHARACTER*20 cltra, cltrau
      CHARACTER*80 cltral

      REAL zsto, zout, zsec
      INTEGER iyear,imonth,iday,iimi, iima, ijmi, ijma, ipk
C
C
C 0. Initialisation
C -----------------
C
C
C local variable for debugging
      clp=.false.
      clp=clp.and.lwp
C
C Define frequency of output and means
C
#        if defined key_diainstant
      zsto=nwritetrc*rdt
      clop='inst(only(x))'
#        else
      zsto=rdt
      clop='ave(only(x))'
#        endif
      zout=nwritetrc*rdt
C
C Define indexes of the horizontal output zoom
      iimi=1
      iima=jpi
      ijmi=1
      ijma=jpj
c ipk limit storage in depth
      ipk = jpk

C
C
C 1. Define NETCDF files and fields at beginning of first time step
C -----------------------------------------------------------------
C
      IF(clp)WRITE(numout,*)'trcdit kt=',kt,' kindic ',kindic
      IF (kt.eq.nit000.and.kindic.eq.1) THEN

          WRITE(numout,*)" indexes of zoom = ", 
     $      iimi, iima, ijmi, ijma
          WRITE(numout,*)" limit storage in depth = ", ipk
c
c   choose calendar for ioipsl
c
          IF (nleapy .eq. 1) THEN 
              CALL ioconf_calendar('gregorian')
          ELSE IF  (nleapy .eq. 0) THEN 
              CALL ioconf_calendar('noleap')
          ELSE IF (nleapy .eq. 30) THEN 
              CALL ioconf_calendar('360d')
          ENDIF 
C
C Compute julian date from starting date of the run
C
          iyear = ijulian/10000
          imonth = ijulian/100 - iyear*100
          iday = ijulian - imonth*100 - iyear*10000
          iyear = ijulian/10000
          zsec=0.
          CALL ymds2ju(iyear,imonth,iday,zsec,xjulian)

          iyear = ndastp/10000
          imonth = ndastp/100 - iyear*100
          iday = ndastp - imonth*100 - iyear*10000
          iyear = ndastp/10000
          zsec=0.
          CALL ymds2ju(iyear,imonth,iday,zsec,djulian)
          write(0,*) iyear,imonth,iday,zsec,djulian
          IF(lwp)WRITE(numout,*)' '  
          IF(lwp)WRITE(numout,*)' Date 0 used :',nit000
     $        ,' YEAR ',iyear,' MONTH ',imonth,' DAY ',iday
     $        ,'Julian day : ',djulian
     $        ,'XJulian day : ',xjulian
C
C Define the NETCDF files for passive tracer concentration
C
          CALL dia_nam(clhstnam,nwrite,'ptrc_T')

          IF(lwp)WRITE(numout,*)" Name of NETCDF file ",
     $        clhstnam
C Horizontal grid : glamt and gphit
C 
          CALL histbeg(clhstnam, jpi, glamt, jpj, gphit,
     $        iimi, iima-iimi+1, ijmi, ijma-ijmi+1, 
c     $        nit000-1, xjulian, rdt, nhorit5, nit5)
     $        nit000-1, djulian, rdt, nhorit5, nit5)
C Vertical grid for tracer : gdept
          CALL histvert(nit5, 'deptht', 'Vertical T levels',
     $        'm', ipk, gdept, ndepit5)

C Index of ocean points in 3D and 2D (surface)
          CALL wheneq(jpi*jpj*ipk,tmask,1,1.,ndext50,ndimt50)
          CALL wheneq(jpi*jpj,tmask,1,1.,ndext51,ndimt51)
C
C Declare all the output fields as NETCDF variables
C
C tracer concentrations
C
          DO jn=1,jptra
            cltra=ctrcnm(jn)    ! short title for tracer
            cltral=ctrcnl(jn)   ! long title for tracer
            cltrau=ctrcun(jn)   ! UNIT for tracer
            CALL histdef(nit5, cltra, cltral, cltrau, jpi, jpj, nhorit5,
     $          ipk, 1, ipk,  ndepit5, 32, clop, zsto, zout) 
          END DO           
C
C CLOSE netcdf Files
C          
          CALL histend(nit5)
C
C SOME diagnostics to DO first time
C
      ELSE
C
C
C 2. Start writing data
C ---------------------
C
C tracer concentrations
C
          DO jn=1,jptra
            cltra=ctrcnm(jn) ! short title for tracer
            CALL histwrite(nit5, cltra, kt,trn(:,:,:,jn), ndimt50,
     $          ndext50)
          END DO 
C
C synchronise FILE
C
          IF(lwp .and. mod( kt, nwritetrc ).EQ.0) THEN 
              WRITE(numout,*)
     $        '**** trcdit : write NetCDF passive tracer concentration' 
              CALL histsync(nit5)
          ENDIF 
      ENDIF
C
C 3. Closing all files
C --------------------
      IF (kt.EQ.nitend.OR.kindic.LT.0) THEN
          CALL histclo(nit5)
      ENDIF

#    else
C
C no passive tracers
C
#    endif

C
C 
      RETURN
      END