6. One paragraph description of your model (e.g. abstract from report or
   paper);

   Efficient multi-layer snow model resolving internal snow
   processes model can be used in stand-alone-estimations as well as
   it can be coupled to a GCM (is implemented a ECHAM test
   version, will be part of a future ECHAM standard version)  
   model has been tested under different climate conditions
         

50. Please provide references relevant to the model description and use.

Description and use of multi-layer snow model in stand-alone-mode:

  Loth, B.; H. F. Graf and J. M. Oberhuber, 1993: "A Snow-Cover 
  Model for Global Climate Simulations",  J. Geophys. Res., Vol. 
  98 20D6, 10,451-10,464.

  Loth, B. and H. F. Graf, 1997: "Modelling the Snow Cover in Climate 
  Studies, I: "Long-Term Integrations under Different Climatic 
  Conditions Using a Multi-Layered Snow-Cover Model" II: "Sensitivity 
  to Internal Snow Parameters and Interface Processes", J. Geophys. 
  Res., (97JD014011 and 97JD014012)

Description and verification of ECHAM&multi-layer snow model

Loth, B., L. Bengtsson, L. Dümenil, D. Jacob, 1997: "An Improved 
Snow Physics in the ECHAM Model", (in prep., solicited paper at 
EGS Meeting Apr. 1997)