!-----------------------------------------------------------------------
&namtra_ldf    !   lateral diffusion scheme for tracer 
!-----------------------------------------------------------------------
                           !  Type of the operator : 
   ln_traldf_lap    =  .true.   !     laplacian operator       
   ln_traldf_bilap  =  .false.  !     bilaplacian operator     
                           !  Direction of action  :
   ln_traldf_level  =  .false.  !     iso-level                
   ln_traldf_hor    =  .false.  !     horizontal (geopotential)         (require "key_ldfslp" when ln_sco=T)
   ln_traldf_iso    =  .true.   !     iso-neutral                       (require "key_ldfslp")
                           !  Coefficient
   rn_aht_0         =  2000.    !     horizontal eddy diffusivity for tracers [m2/s]
   rn_ahtb_0        =     0.    !     background eddy diffusivity for ldf_iso [m2/s]
   rn_aeiv_0        =  2000.    !     eddy induced velocity coefficient [m2/s]    (require "key_traldf_eiv")
/