Institution: | a USDA-ARS, Hydrology Laboratory, Building 007, Room 104, BARC-West, Beltsville, MD 20705, USA b Department of Agronomy, University of Kentucky, Lexington, KY 40546-0091, USA c USDA-ARS, Remote Sensing and Modeling Laboratory and Department of Botany, Duke University, Durham, NC 27708, USA |