MODULE trcice
   !!======================================================================
   !!                         ***  MODULE trcice  ***
   !! TOP :   Manage the communication between TOP and sea ice
   !!======================================================================
   !! History :  3.5  ! 2013    (M. Vancoppenolle, O. Aumont, G. Madec), original code
   !!----------------------------------------------------------------------
#if defined key_top
   !!----------------------------------------------------------------------
   !!   'key_top'                                                TOP models
   !!----------------------------------------------------------------------
   !!   trc_ice   :  Call the appropriate sea ice tracer subroutine
   !!----------------------------------------------------------------------

   USE oce_trc         ! shared variables between ocean and passive tracers
   USE trc             ! passive tracers common variables
!  USE trcrst          ! passive tracers restart
   USE trcnam          ! Namelist read
!  USE trcice_cfc      ! CFC      initialisation
   USE trcice_pisces   ! PISCES   initialisation
!  USE trcice_c14b     ! C14 bomb initialisation
!  USE trcice_my_trc   ! MY_TRC   initialisation
!  USE trcdta          ! initialisation form files
!  USE daymod          ! calendar manager
!  USE zpshde          ! partial step: hor. derivative   (zps_hde routine)
!  USE prtctl_trc      ! Print control passive tracers (prt_ctl_trc_init routine)
!  USE trcsub       ! variables to substep passive tracers
!  USE in_out_manager  
   
   IMPLICIT NONE
   PRIVATE
   
   PUBLIC   trc_ice_ini ! called by trc_init

CONTAINS
   
   SUBROUTINE trc_ice_ini
      !!---------------------------------------------------------------------
      !!                     ***  ROUTINE trc_ice_ini ***
      !!
      !! ** Purpose :   Communication between TOP and sea ice
      !!
      !! ** Method  : - 
      !!            
      !!---------------------------------------------------------------------
      INTEGER ::   jk, jn, jl    ! dummy loop indices
      INTEGER :: ios                              ! Local integer output status for namelist read

      NAMELIST/namtrc_ice/ nn_ice_tr
      !
      IF(lwp) WRITE(numout,*)
      IF(lwp) WRITE(numout,*) 'trc_ice_ini : Initialize sea ice tracer boundary condition'
      IF(lwp) WRITE(numout,*) '~~~~~~~~~~~~~'

      IF( nn_timing == 1 )  CALL timing_start('trc_ice_ini')

      IF(lwp) THEN
         WRITE(numout,*) ' '
         WRITE(numout,*) ' sea ice tracers option (nn_ice_tr) : ', nn_ice_tr
         WRITE(numout,*) ' '
      ENDIF
      !
      REWIND( numnat_ref )              ! Namelist namtrc_dta in reference namelist : Passive tracer input data
      READ  ( numnat_ref, namtrc_ice, IOSTAT = ios, ERR = 901)
 901  IF( ios /= 0 ) CALL ctl_nam ( ios , ' namtrc_ice in reference namelist ', lwp )

      trc_i(:,:,:) = 0.0d0 ! by default
      trc_o(:,:,:) = 0.0d0 ! by default

      IF ( nn_ice_tr == 1 ) THEN
         IF( lk_pisces  )       CALL trc_ice_ini_pisces       ! PISCES  bio-model
         ! to be written
         !IF( lk_cfc     )       CALL trc_ice_ini_cfc          ! CFC     tracers
         !IF( lk_c14b    )       CALL trc_ice_ini_c14b         ! C14 bomb  tracer
         !IF( lk_my_trc  )       CALL trc_ice_ini_my_trc       ! MY_TRC  tracers
      ENDIF

      IF( nn_timing == 1 )   CALL timing_stop('trc_ice_ini')
      !
   END SUBROUTINE trc_ice_ini

#else
   !!----------------------------------------------------------------------
   !!  Empty module :                                     No passive tracer
   !!----------------------------------------------------------------------
CONTAINS
   SUBROUTINE trc_ice_ini                   ! Dummy routine   
   END SUBROUTINE trc_ice_ini
#endif

   !!======================================================================
END MODULE trcice