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Forestry Sciences Laboratory - Moscow, Idaho
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Engineering Publications


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William J. Elliot
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Evaluation and enhancement of the CLIGEN weather generator

Flanagan, D.C.; Meyer, C.R.; Yu, B.; Scheele, D.L. 2001. Evaluation and enhancement of the CLIGEN weather generator. Presented January 3-5, 2000, Honolulu, HI. In: Ascough II, J.C.; Flanagan, D.C., eds. Soil erosion for the 21st century: proceedings of the international symposium. St. Joseph, MI: ASAE. ASAE Pub. No. 701P0007. 107-110.

Keywords: Climate generation, Stochastic weather generator, Erosion models, CLIGEN, WEPP

Links: pdf PDF [147 KB]
ASAE pdf

Abstract: Stochastic weather generators are often employed with process-based soil erosion prediction models. Longterm observed weather station statistics (precipitation, temperature, etc.) can be used to provide a daily series of temperature, precipitation, solar radiation, and wind parameters needed by an erosion model in its calculations for evapotranspiration, plant growth, soil frost and thaw development, snow melt, infiltration, runoff, and soil erosion. The Water Erosion Prediction Project (WEPP) erosion model typically uses the CLIGEN weather generator to provide the daily climatic inputs that drive its hydrologic and erosion processes. This presentation describes recently identified problems with CLIGEN and its weather station database, as well as enhancements to improve the generator program and supporting database.

Moscow FSL publication no. 2001u