Song Shu¹, Hongxing Liu², Lei Wang³, Jihee Seo², Dan Tian², Richard Beck⁴, Haibin Su⁵ and Shujie Wang⁶, (1)Appalachian State University, Geography and Planning, Boone, NC, United States, (2)The University of Alabama, Department of Geography and the Environment, Tuscaloosa, AL, United States, (3)Louisiana State University, Department of Geography and Anthropology, Baton Rouge, LA, United States, (4)University of Cincinnati Main Campus, Department of Geography and Geographic Information Science, Cincinnati, United States, (5)Texas A&M University - Kingsvi, Department of Physics and Geosciences, Kingsville, United States, (6)Pennsylvania State University, Geography, Earth and Environmental Systems Institute, ICDS, University Park, PA, United States