MODULE trcwri
   !!======================================================================
   !!                       *** MODULE trcwri ***
   !!    TOP :   Output of passive tracers 
   !!======================================================================
   !!             1.0  !  
   !!                  !  2009-05 (C. Ethe )
   !!----------------------------------------------------------------------
#if defined key_top &&  defined key_iomput
   !!----------------------------------------------------------------------
   !!   'key_top' && 'key_iomput'                              TOP models
   !!----------------------------------------------------------------------
   !! trc_wri     :  outputs of concentration fields
   !!----------------------------------------------------------------------
   USE trc
   USE iom

   IMPLICIT NONE
   PRIVATE

   PUBLIC trc_wri      

   !! * Substitutions
#  include "top_substitute.h90"
   !!----------------------------------------------------------------------
   !! NEMO/TOP 1.0 , LOCEAN-IPSL (2005) 
   !! $Id: trcdia.F90 1450 2009-05-15 14:12:12Z cetlod $ 
   !! Software governed by the CeCILL licence (modipsl/doc/NEMO_CeCILL.txt)
   !!----------------------------------------------------------------------

CONTAINS

   SUBROUTINE trc_wri( kt )  
      !!---------------------------------------------------------------------
      !!                     ***  ROUTINE trc_wri  ***
      !!
      !! ** Purpose :   output passive tracers fields 
      !!---------------------------------------------------------------------
      INTEGER, INTENT( in ) :: kt       ! ocean time-step
      INTEGER               :: jn
      CHARACTER (len=20)    :: cltra
      !!---------------------------------------------------------------------
 
      ! Initialisation
      ! --------------

      CALL iom_setkt( kt + ndttrc - 1 ) ! set the passive tracer time step

      ! write the tracer concentrations in the file
      ! ---------------------------------------
      DO jn = 1, jptra
         cltra = ctrcnm(jn)                   ! short title for tracer
         CALL iom_put( cltra, trn(:,:,:,jn) )
      END DO
      !
      CALL iom_setkt( kt )       ! set the model time step

      !
   END SUBROUTINE trc_wri

#else
   !!----------------------------------------------------------------------
   !!  Dummy module :                                     No passive tracer
   !!----------------------------------------------------------------------
   PUBLIC trc_wri
CONTAINS
   SUBROUTINE trc_wri( kt )                     ! Empty routine   
   INTEGER, INTENT(in) :: kt
   END SUBROUTINE trc_wri

#endif

   !!======================================================================
END MODULE trcwri