MODULE trcini_c14
   !!======================================================================
   !!                         ***  MODULE trcini_c14  ***
   !! TOP :   initialisation of the C14 tracers
   !!======================================================================
   !! History :   2.0  !  2007-12  (C. Ethe, G. Madec) Original code
   !! History :   3.0  !  2015 (A. Mouchet) C14 Code
   !!----------------------------------------------------------------------
   !! trc_ini_c14   : C14 model initialisation
   !!----------------------------------------------------------------------
   USE par_trc         ! TOP parameters
   USE oce_trc
   USE trc
   USE sms_c14
   USE trcatm_c14
   USE trcnam_c14
   USE iom

   IMPLICIT NONE
   PRIVATE

   PUBLIC   trc_ini_c14   ! called by trcini.F90 module
   
   !

   !!----------------------------------------------------------------------
   !! NEMO/TOP 4.0 , NEMO Consortium (2018)
   !! $Id$ 
   !! Software governed by the CeCILL license (see ./LICENSE)
   !!----------------------------------------------------------------------
CONTAINS

   SUBROUTINE trc_ini_c14
      !!----------------------------------------------------------------------
      !!                     ***  trc_ini_c14  ***  
      !!
      !! ** Purpose :   initialization for C14 model
      !!
      !! ** Method  : 
      !!----------------------------------------------------------------------
      !
      REAL(wp) :: ztrai
      INTEGER  :: jn
      CHARACTER(len = 20)  ::  cltra
      !!----------------------------------------------------------------------
      !
      CALL trc_nam_c14
      !                       ! Allocate c14 arrays
      IF( sms_c14_alloc() /= 0 )   CALL ctl_stop( 'STOP', 'trc_ini_c14: unable to allocate C14 arrays' )

      IF(lwp) WRITE(numout,*)
      IF(lwp) WRITE(numout,*) ' trc_ini_c14: initialisation of C14 model'
      !
      IF( .NOT. ln_rsttr )  THEN
         !
         IF(lwp) WRITE(numout,*) '                      ==>    PRESCRIBED initial VALUES'
         IF(lwp) WRITE(numout,*) '                      ==>    Ocean C14/C :', rc14init 
         !
         trn(:,:,:,jp_c14) = rc14init * tmask(:,:,:)
         !
         qtr_c14(:,:) = 0._wp           ! Init of air-sea BC
         !
      ELSE

        IF(lwp) WRITE(numout,*)
        IF(lwp) WRITE(numout,*) ' trc_rst_read_c14 : Read specific variables for c14 model '
        IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~'
        ! 
        CALL iom_get( numrtr, 'co2sbc', co2sbc ) 
        CALL iom_get( numrtr, jpdom_autoglo, 'c14sbc', c14sbc ) 
        CALL iom_get( numrtr, jpdom_autoglo, 'exch_co2', exch_co2 ) 
        CALL iom_get( numrtr, jpdom_autoglo, 'exch_c14', exch_c14 ) 
        CALL iom_get( numrtr, jpdom_autoglo, 'qtr_c14', qtr_c14 )
        !
      END IF
      !
      IF( ( nn_rsttr == 0 ) .OR. ( .NOT. ln_rsttr ) ) THEN
      !
      !                         !  qint set to zero <=== Initial of transient
      !                         !                   <=== Restart=false
         IF(lwp) WRITE(numout,*) '                    ==>    qint reset to ZERO '
         qint_c14(:,:) = 0._wp
      !
      ELSE
        !
        CALL iom_get( numrtr, jpdom_autoglo, 'qint_c14', qint_c14 ) 
        !
      ENDIF
      !
      CALL trc_atm_c14_ini   ! Init atm values
      !
      IF(lwp) WRITE(numout,*) ' ~~~~~~~~~~~~~~'
      !
   END SUBROUTINE trc_ini_c14

   !!======================================================================
END MODULE trcini_c14