a Department of Geological Sciences, University of South Carolina, Columbia, SC, USA b Hydrology and Remote Sensing Lab, USDA, Beltsville, MD, USA c Department of Civil and Environmental Engineering, University of Melbourne, Melbourne, Victoria, Australia d Centre d'Etudes Spatieles de la BIOsphere, Toulouse, France e Department of Hydrology and GeoEnvironmetal Sciences, Vrije Universiteit, Ams...