United States Department of Agriculture
Natural Resources Conservation Service
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AnnAGNPS Continuous Simulation Model Processes

 

Winter Routines

The winter routines handles daily accumulation of snowpack, compaction & settling, and snowmelt. It tracks snowpack layer temperatures and liquid moisture content. It tracks soil temperature and moisture content for the soil profile and the freeze thaw process. The presence of frozen or previously frozen soil layers is used to adjust the curve number and soil erodibility (K-factor) for potential sheet & rill erosion.

Contact: Dan Moore
or Fred Theurer.







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