I follow Beckmann and Döscher's (1997) concept for an improved representation of dense water spreading over topography. It is shown that a system with a representation of a near bottom transport is rather insensitive to sea surface salinity anomalies induced at high latitudes which is important for climate sensitivity on decadal to centenual time scale. This should be analyzed in a more complex model and be compared with measurements available.

"Representing the bottom boundary layer in the GFDL ocean model: Model framework, dynamical impacts, and parameter sensitivity" is available on Anand's home page