Wind Erosion Prediction System (WEPS): Overview
نویسنده
چکیده
Introduction The Wind Erosion Prediction System (WEPS) is a process-based, daily time-step model that simulates weather, field conditions, and erosion. WEPS development is in response to customer requests for improved wind erosion technology. It is intended to replace the predominately empirical Wind Erosion Equation (WEQ) (Woodruff and Siddoway, 1965) as a prediction tool for those who plan soil conservation systems, conduct environmental planning, or assess offsite impacts caused by wind erosion. Objectives The purposes of WEPS are to improve technology for assessing soil loss by wind from agricultural fields and to provide new capabilities such as assessing plant damage, calculating suspension loss, and estimating PM-10 emissions from the field.
منابع مشابه
An Overview of the Wind Erosion Prediction System
The Wind Erosion Prediction System (WEPS) is a process-based, daily time-step, computer model that predicts soil erosion via simulation of the fundamental processes controlling wind erosion. WEPS can calculate soil movement, estimate plant damage, and predict PM-10 emissions when wind speeds exceed the erosion threshold. It also can provide the user with spatial information regarding soil flux,...
متن کاملEvaluation of the Wind Erosion Prediction System (WEPS) erosion submodel on cropland fields
This study represents part of a project by the Global Change and Terrestrial Ecosystem Soil Erosion Network to validate wind erosion models. Soil loss measurements from 46 storm events from eroding fields in six states were compared to predictions from the Wind Erosion Prediction System (WEPS) erosion submodel. The field data were collected from small (2.5 ha), circular, cropland fields with no...
متن کاملA method for using WEPS to map wind erosion risk of Alberta soils
Alberta has 27 million hectares of agricultural land, a significant portion of which is at risk to wind erosion. Combining recently completed provincial digital soils maps (Agricultural Region of Alberta Soil Inventory Database—AGRASID) with geographically referenced spatial weather data and land management descriptions (crop rotations plus cultivation practice) provided an opportunity to evalu...
متن کاملApplication of the WEPS and SWEEP models to non-agricultural disturbed lands
Wind erosion not only affects agricultural productivity but also soil, air, and water quality. Dust and specifically particulate matter ≤10 μm (PM-10) has adverse effects on respiratory health and also reduces visibility along roadways, resulting in auto accidents. The Wind Erosion Prediction System (WEPS) was developed by the USDA-Agricultural Research Service to simulate wind erosion and prov...
متن کاملA Field test of the Wind Erosion Prediction System
Field data need to be collected to test wind erosion models under a broad range of climate, soil, and management conditions. The objective of this study was to test the USDAARS Wind Erosion Prediction System (WEPS) for a field with winter wheat plants in a modest amount of flat residue. A 600 m by 415 m field was selected near Burlington, CO, USA. Big Spring Number Eight (BSNE) samplers were us...
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