|Purpose:||Models quantity and flow of snow from snow cover.|
|Developer:||US National Weather Service (NWS)|
|Key Features:||Uses only two input variables, i.e., air temperature and precipitation; Open-source|
|Latest Release:||2015, Version 5.1.007|
|Related Software:||Snow–Atmosphere–Soil Transfer (SAST) model|
National Weather Service (NWS) SNOW-17, first developed in 1973 is a conceptual model, that it is used to estimate the amount snow accumulation and snowmelt discharge. Calculations are based on snow energy balance that account for snowpack accumulation, heat exchange between the snow and ambient air temperature, snow cover extent, heat storage and exchange, and water retention or transmission.
The Snow-17 model key feature is that the program requirements only require two inputs: air temperature and precipitation. For river forecasting, the output from the SNOW-17 is coupled with a rainfall-runoff model such as Sacramento - Soil Moisture Accounting. SNOW-17 is part of the National Weather Service River Forecast System (NWSRFS), which is an official operational forecasting system for the entire U.S.
Additional InformationAnderson, E.A., 1973, National Weather Service River Forecast System-Snow Accumulation and Ablation Model, NOAA Technical Memorandum: NWS Hydro-17, US National Weather Service
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