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], [Koh, G., snow], [Harrington, R., snow], [Rowe, Greenland, snow], [Melloh, Bosnia, snow], [Hardy, J.P., snow], [Glendinning, G., snow], [Nolin, A., snow], [Koivusalo, H., snow]. Thesis and dissertations (of which I am aware): Nolin, A., University of California, Santa Barbara, 1993; Cline, D., University of Colorado, Boulder, 1995; Grundstein, A., University of Delaware, Newark, 1996; Glenndinning, G., University of Reading, Cambridge (pending), UK; Dai Yongjiu, Chinese Academy of Sciences, Bejing, 1995;