Lin Meng, Iowa State University, Dept. of Geological & Atmospheric Sciences, Ames, United States, Yuyu Zhou, Iowa State University, Ames, United States, Jiafu Mao, Oak Ridge National Laboratory, Environmental Sciences Division and Climate Change Science Institute, Oak Ridge, TN, United States, Xuecao Li, Iowa State University, Dept. of Geological & Atmospheric Sciences, Ames, IA, United States and Zhuosen Wang, NASA Goddard Space Flight Center, Terrestrial Information Systems Laboratory, Greenbelt, MD, United States