!-----------------------------------------------------------------------
&nam_trabbl   !   bottom boundary layer scheme                          
!-----------------------------------------------------------------------
!  "key_trabbl_dif"              !  Activate the diffusive bbl 
!  "key_trabbl_adv"              !  Activate the advective bbl 
   atrbbl = 10000.               !  lateral tracer coeff. for bbl scheme (m2/s)
/