6. One paragraph description of your model (e.g. abstract from report or
   paper);
   
A one-dimensional model, SNTHERM (Jordan, 1991) predicts changes of 
snow processes and properties: heat conduction, vapor diffusion, liquid 
water flow, compaction, radiation penetration, albedo change, grain 
growth, etc.; and profiles of temperature, snow density, grain size, 
liquid water content, etc. respectively.  The model solves a series of 
partial differential equations through the use of discretized control 
volumes implemented as a finite difference scheme. Surface boundary 
conditions nominally require:  incoming solar and longwave radiation; 
wind speed, air temperature and humidity at some reference height; 
and precipitation.  The model will estimate solar and longwave radiation 
from cloud cover, if data on these variables are not available.  Lower 
boundary conditions include soil textural properties (currently clay of 
sand used as defaults), wetness and temperature profile.

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

Search on [Jordan, R., snow], [Davis, R.E., snow], [Cline, D., snow],
[Harrington, R., snow], [Rowe, Greenland, snow], [Melloh, Bosnia, snow],
[Hardy, J.P., snow].

Contact R. Jordan for more.