Xiaojian Zheng¹, Baike Xi², Xiquan Dong³, Timothy Logan⁴, Yuan Wang⁵ and Peng Wu², (1)University of Arizona, Tucson, United States, (2)University of Arizona, Tucson, AZ, United States, (3)University of Arizona, Department of Hydrology and Atmospheric Sciences, Tucson, AZ, United States, (4)Texas A & M University College Station, College Station, TX, United States, (5)NASA Jet Propulsion Laboratory, Pasadena, CA, United States