T201 Landscape Dynamics: Integrating Soils, Hydrology, and Climatic Processes to Understand Weathering, Sediment Transport and Biospheric Processes
Tuesday, 3 November 2015
8:00 AM - 12:00 PM
Room 336
METHODS OF VALIDATING THE SOIL MOISTURE ACTIVE PASSIVE(SMAP) MISSION USING USDA-ARS EXPERIMENTAL WATERSHEDS
Paper number: T201-1
Program: Technical Sessions
Time: 8:00 AM – 8:15 AM
Authors
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John H. PruegerUSDA-ARS, National Lab for Agriculture and the Environment, Ames, IA
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Thomas JacksonHydrology and Remote Sensing Lab, Beltsville, MD
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Rajat BindlishHydrology and Remote Sensing Lab, Beltsville, MD
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Andreas CollianderJet Propulsion Laboratory, Pasadena, CA
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Steven ChanJet Propulsion Laboratory, Pasadena, CA
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Narendra DasJet Propulsion Laboratory, Pasadena, CA
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Simon YuehJet Propulsion Laboratory, Pasadena, CA
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David BoschSoutheast Watershed Research Lab, Tifton, GA
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David GoodrichSouthwest Watershed Research Center, Tucson, AZ
Abstract
The Soil Moisture Active Passive mission (SMAP) provides a global soil moisture product on a 36 km resolution for the near surface. This mission relies upon an international cooperative of in situ networks to provide ground truth references across a variety of landscapes. The USDA Agricultural Research Service operates several experimental watersheds as part of this project with distributed soil moisture networks, measuring soil moisture at a variety of depths including the 5 cm depth, which is critical for satellite validation. Comparisons of the in situ network estimates to the satellite products are ongoing, but initial results have shown a good correspondence between satellite estimates and the in situ soil moisture resources, once scaling functions are applied. The scaling methodologies for the in situ networks are reviewed.