James S Famiglietti, Arizona State University, School of Sustainability, Tempe, AZ, United States, Hrishikesh Arvind Chandanpurkar, Arizona State University, School of Sustainability, Tempe, United States, John T Reager II, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, David N Wiese, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States and Yoshihide Wada, King Abdullah University of Science and Technology, Biological and Environmental Science and Engineering Division, Thuwal, Saudi Arabia