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Water 2017, 9(6), 437;

Development of a Station Based Climate Database for SWAT and APEX Assessments in the US

Agricultural Research Service, US Department of Agriculture, 808 E. Blackland Road, Temple, TX 76502, USA
Blackland Research & Extension Center, Texas A&M AgriLife, Temple, TX 76502, USA
Author to whom correspondence should be addressed.
Received: 11 May 2017 / Revised: 7 June 2017 / Accepted: 14 June 2017 / Published: 17 June 2017
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Water quality simulation models such as the Soil and Water Assessment Tool (SWAT) and Agricultural Policy EXtender (APEX) are widely used in the US. These models require large amounts of spatial and tabular data to simulate the natural world. Accurate and seamless daily climatic data are critical for accurate depiction of the hydrologic cycle, yet these data are among the most difficult to obtain and process. In this paper we describe the development of a national (US) database of preprocessed climate data derived from monitoring stations applicable to USGS 12-digit watersheds. Various sources and processing methods are explored and discussed. A relatively simple method was employed to choose representative stations for each of the 83,000 12-digit watersheds in the continental US. Fully processed climate data resulting from this research were published online to facilitate other SWAT and APEX modeling efforts in the US. View Full-Text
Keywords: SWAT; APEX; climate SWAT; APEX; climate

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White, M.J.; Gambone, M.; Haney, E.; Arnold, J.; Gao, J. Development of a Station Based Climate Database for SWAT and APEX Assessments in the US. Water 2017, 9, 437.

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