MODULE ldftra_crs
   !!======================================================================
   !!                       ***  MODULE  ldftra  ***
   !! Ocean physics:  lateral diffusivity coefficient 
   !!=====================================================================
   !! History :        ! 1997-07  (G. Madec)  from inimix.F split in 2 routines
   !!   NEMO      1.0  ! 2002-09  (G. Madec)  F90: Free form and module
   !!             2.0  ! 2005-11  (G. Madec)  
   !!----------------------------------------------------------------------

   !!----------------------------------------------------------------------
   !!   ldf_tra_init : initialization, namelist read, and parameters control
   !!   ldf_tra_c3d   : 3D eddy viscosity coefficient initialization
   !!   ldf_tra_c2d   : 2D eddy viscosity coefficient initialization
   !!   ldf_tra_c1d   : 1D eddy viscosity coefficient initialization
   !!----------------------------------------------------------------------
!   USE oce             ! ocean dynamics and tracers
!   USE dom_oce         ! ocean space and time domain
!   USE phycst          ! physical constants
   USE ldftra_oce,ONLY : lk_traldf_eiv,ln_traldf_lap,ln_traldf_bilap     ! ocean tracer   lateral physics
!   USE ldfslp          ! ???
!   USE in_out_manager  ! I/O manager
!   USE ioipsl
!   USE lib_mpp         ! distribued memory computing library
!   USE lbclnk          ! ocean lateral boundary conditions (or mpp link)
   USE oce_trc
   USE crslbclnk , ONLY : crs_lbc_lnk

   IMPLICIT NONE
   PRIVATE

   PUBLIC   ldf_tra_crs_init   ! called by opa.F90

   !! * Substitutions
#  include "domzgr_substitute.h90"
#  include "vectopt_loop_substitute.h90"
   !!----------------------------------------------------------------------
   !! NEMO/OPA 3.3 , NEMO Consortium (2010)
   !! $Id: ldftra.F90 4624 2014-04-28 12:09:03Z acc $
   !! Software governed by the CeCILL licence     (NEMOGCM/NEMO_CeCILL.txt)
   !!----------------------------------------------------------------------
CONTAINS

   SUBROUTINE ldf_tra_crs_init
      !!----------------------------------------------------------------------
      !!                  ***  ROUTINE ldf_tra_init  ***
      !! 
      !! ** Purpose :   initializations of the tracer lateral mixing coeff.
      !!
      !! ** Method  :   the Eddy diffusivity and eddy induced velocity ceoff.
      !!      are defined as follows:
      !!         default option   : constant coef. aht0, aeiv0 (namelist)
      !!        'key_traldf_c1d': depth dependent coef. defined in 
      !!                            in ldf_tra_c1d routine
      !!        'key_traldf_c2d': latitude and longitude dependent coef.
      !!                            defined in ldf_tra_c2d routine
      !!        'key_traldf_c3d': latitude, longitude, depth dependent coef.
      !!                            defined in ldf_tra_c3d routine
      !!
      !!      N.B. User defined include files.  By default, 3d and 2d coef.
      !!      are set to a constant value given in the namelist and the 1d
      !!      coefficients are initialized to a hyperbolic tangent vertical
      !!      profile.
      !!----------------------------------------------------------------------
      INTEGER ::   ioptio               ! temporary integer
      INTEGER ::   ios                  ! temporary integer
      LOGICAL ::   ll_print = .FALSE.   ! =T print eddy coef. in numout
      !!----------------------------------------------------------------------

!#if defined key_traldf_c3d
!      CALL ldf_tra_c3d( ll_print )      ! aht = 3D coef. = F( longitude, latitude, depth )
!#elif defined key_traldf_c2d
      CALL ldf_tra_c2d_crs( ll_print )      ! aht = 2D coef. = F( longitude, latitude )
!#elif defined key_traldf_c1d
!      CALL ldf_tra_c1d( ll_print )      ! aht = 1D coef. = F( depth )
!#endif
                                        ! Constant coefficients
      !
   END SUBROUTINE ldf_tra_crs_init

!#if defined key_traldf_c3d
!#   include "ldftra_c3d.h90"
!#elif defined key_traldf_c2d
#   include "ldftra_c2d_crs.h90"
!#elif defined key_traldf_c1d
!#   include "ldftra_c1d.h90"
!#endif

   !!======================================================================
END MODULE ldftra_crs