!-----------------------------------------------------------------------
&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)            (requires "key_ldfslp" when ln_sco=T)
   ln_traldf_iso    =  .true.   !  iso-neutral                          (requires "key_ldfslp")
   !		       	   !  Griffies parameters
   ln_traldf_grif   =  .false.  !  use griffies triad formulation       (requires "key_ldfslp")
   ln_traldf_gdia   =  .false.  !  output griffies strfn diagnostics    (requires "key_ldfslp")
   ln_triad_iso     =  .false.  !  isoneutral diff'n triads => pure lateral mixing in ML (requires "key_ldfslp")
   ln_botmix_grif   =  .false.  !  griffies operator with lateral mixing on bottom (requires "key_ldfslp")
   !                       !  Coefficients
   ! rn_aeiv_0 is ignored with Held-Larichev spatially varying aeiv (key_traldf_c2d & key_orca_r2, _r1 or _r05)
   rn_aeiv_0        =  2000.    !  eddy induced velocity coefficient [m2/s]    (requires "key_traldf_eiv")
   rn_aht_0         =  2000.    !  horizontal eddy diffusivity for tracers [m2/s]
   rn_ahtb_0        =     0.    !  background eddy diffusivity for ldf_iso [m2/s] (normally=0; not used with Griffies)
/