MODULE trcnam_cfc
   !!======================================================================
   !!                         ***  MODULE trcnam_cfc  ***
   !! TOP :   initialisation of some run parameters for CFC chemical model
   !!======================================================================
   !! History :   2.0  !  2007-12  (C. Ethe, G. Madec) from trcnam.cfc.h90
   !!----------------------------------------------------------------------
   !! trc_nam_cfc      : CFC model initialisation
   !!----------------------------------------------------------------------
   USE oce_trc         ! Ocean variables
   USE trc             ! TOP variables
   USE trcsms_cfc      ! CFC specific variable

   IMPLICIT NONE
   PRIVATE

   PUBLIC   trc_nam_cfc   ! called by trcnam.F90 module

   !!----------------------------------------------------------------------
   !! NEMO/TOP 3.3 , NEMO Consortium (2010)
   !! $Id$ 
   !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt)
   !!----------------------------------------------------------------------

CONTAINS

   SUBROUTINE trc_nam_cfc
      !!-------------------------------------------------------------------
      !!                  ***  ROUTINE trc_nam_cfc  ***
      !!                 
      !! ** Purpose :   Definition some run parameter for CFC model
      !!
      !! ** Method  :   Read the namcfc namelist and check the parameter 
      !!       values called at the first timestep (nittrc000)
      !!
      !! ** input   :   Namelist namcfc
      !!----------------------------------------------------------------------
      INTEGER :: ios                 ! Local integer output status for namelist read
      INTEGER :: jl, jn
      !!
      NAMELIST/namcfc/ ndate_beg, nyear_res
      !!----------------------------------------------------------------------

      IF( ln_cfc11 ) THEN
         ctrcnm    (jp_cfc0) = 'CFC11'
         ctrcln    (jp_cfc0) = 'Chlorofluoro carbon 11 Concentration'
         ctrcun    (jp_cfc0) = 'umolC/L'
         ln_trc_ini(jp_cfc0) = .false.
      ENDIF
      !
      IF( ln_cfc12 ) THEN
         ctrcnm    (jp_cfc1) = 'CFC12'
         ctrcln    (jp_cfc1) = 'Chlorofluoro carbon 12 Concentration'
         ctrcun    (jp_cfc1) = 'umolC/L'
         ln_trc_ini(jp_cfc1) = .false.
      ENDIF
      !
      IF(lwp) THEN                   ! control print
      ENDIF

      REWIND( numtrc_ref )              ! Namelist namcfcdate in reference namelist : CFC parameters
      READ  ( numtrc_ref, namcfc, IOSTAT = ios, ERR = 901)
901   IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfc in reference namelist', lwp )

      REWIND( numtrc_cfg )              ! Namelist namcfcdate in configuration namelist : CFC parameters
      READ  ( numtrc_cfg, namcfc, IOSTAT = ios, ERR = 902 )
902   IF( ios /= 0 ) CALL ctl_nam ( ios , 'namcfc in configuration namelist', lwp )
      IF(lwm) WRITE ( numonr, namcfc )

      IF(lwp) THEN                  ! control print
         WRITE(numout,*) ' '
         WRITE(numout,*) ' CFCs'
         IF( ln_cfc11 )  WRITE(numout,*) '  tracer nb : ', jp_cfc0, '    short name : ', TRIM( ctrcnm(jp_cfc0) )
         IF( ln_cfc12 )  WRITE(numout,*) '  tracer nb : ', jp_cfc1, '    short name : ', TRIM( ctrcnm(jp_cfc1) )
         WRITE(numout,*) ' '
         WRITE(numout,*) ' trc_nam: Read namdates, namelist for CFC chemical model'
         WRITE(numout,*) ' ~~~~~~~'
         WRITE(numout,*) '    initial calendar date (aammjj) for CFC  ndate_beg = ', ndate_beg
         WRITE(numout,*) '    restoring time constant (year)          nyear_res = ', nyear_res
      ENDIF
      nyear_beg = ndate_beg / 10000
      IF(lwp) WRITE(numout,*) '    initial year (aa)                       nyear_beg = ', nyear_beg
      !
      IF(lwm) CALL FLUSH ( numonr )     ! flush output namelist CFC

   END SUBROUTINE trc_nam_cfc
   
   !!======================================================================
END MODULE trcnam_cfc