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Wind Erosion Prediction System (WEPS) : technical documentation


Author:
United States. Agricultural Research Service
Source:
Agriculture handbook (United States. Department of Agriculture) ; no. 727 2020
Year:
2020
Subject:
Wind erosion -- Computer simulation -- Handbooks, manuals, etc., Soil erosion prediction -- Computer simulation -- Handbooks, manuals, etc., and Crop residues -- Computer simulation -- Handbooks, manuals, etc.
Abstract:
The Wind Erosion Prediction System (WEPS) is a computer model designed to simulate wind erosion processes on cultivated agricultural lands. WEPS incorporates nearly 70 years of wind erosion research by the U.S. Department of Agriculture (USDA) to provide accurate and universal simulations of soil loss by wind and represents superior wind erosion prediction technology over previous prediction methods. In addition to providing improved estimates of soil loss, WEPS partitions loss, transport, and deposition into coarse (creep + saltation) and fine (suspension) size classes to account for the unique characteristics of each size to enable evaluations of their respective effects on the soil and surrounding environment. It also provides the amounts of loss by direction for each size class for offsite soil, air, and water quality assessments. WEPS models the field surface state and wind erosion as physically based processes as much as possible. It operates on a daily-time step to simulate soil surface erodibility as affected by soil, land management, and stochastically simulated weather. The strongest utility of WEPS is its ability to apply different “what-if” management scenarios to the land to develop alternatives for wind erosion control.
Format:
1 online resource (534 pages) : illustrations
Publisher:
United States Department of Agriculture, Agricultural Research Service
Collection:
USDA publications