|Liao, Chaoying - NORTHWEST A&F UNIVERSITY|
|Van Donk, Simon|
Submitted to: International Soil Conservation Organization Conference Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: September 15, 2005
Publication Date: N/A
Technical Abstract: The Wind Erosion Prediction System (WEPS) requires hourly wind data but these are not always available. Therefore, a procedure was developed to stochastically generate wind speed and direction from temporally limited wind data. For three locations, two statistical datasets were created to be used with the WEPS stochastic wind generator, based on 1) the full dataset with 24 observations per day and 2) a subset of 4 observations per day: at 2, 8, 14, and 20 hours local time. Erosive wind power densities, calculated from both datasets, agreed well with each other. The same was true for prevailing wind erosion direction and WEPS-simulated soil loss. In spite of temporally limited wind data, it is possible to use WEPS to estimate wind erosion hazard and relative effectiveness of various conservation practices.