Submitted to: American Society of Agronomy Meetings
Publication Type: Abstract Only
Publication Acceptance Date: September 1, 2006
Publication Date: November 5, 2006
Citation: Kim, M., Flanagan, D.C., Frankenberger, J.R., Meyer, C.R. 2006. Impact of climate changes on soil erosion and runoff in Korea [abstract]. American Society of Agronomy Meetings. 2006 CDROM. Technical Abstract: Stochastic weather generators are commonly used to downscale climate change scenarios produced by Global Climate Models (GCMs) to have climate input at the appropriate spatial and temporal resolution. These weather generators are particularly useful in producing the required climate input to drive crop, hydrologic, and soil erosion models. CLIGEN is a stochastic weather generator used to produce the required climate input for the WEPP (Water Erosion Prediction Project) model. The objective of this study is to apply CLIGEN and adjust CLIGEN parameter values to generate realistic precipitation change scenarios for erosion prediction purposes in Korea. Two different sites, Chun-Cheon and Jeon-Ju, were studied and compared. Chun-Cheon is located at high altitude and surrounded with forest, Jeon-Ju is located in the plains. The climate data including temperature, precipitation, wind parameters, and solar radiation were applied and compared. It was found that a change in precipitation amount and intensity had a much greater effect on soil erosion and runoff generation in Chun-Cheon with unique topography characteristics. Further, simultaneous adjustment of all climate parameters is needed for generation of precipitation change scenarios for other regions in Korea.