1. Department of Geography, Binghamton University, State University of New York, Binghamton, NY, USA
2. Department of Physics and Geosciences, Texas A&M University-Kingsville, Kingsville, TX, USA
3. Department of Geography, University of Alabama, Tuscaloosa, AL, USA
4. Department of Geography, University of Cincinnati, Cincinnati, OH, USA
5. US Army Corp of Engineers, Kiln, MS, USA
6. Key Laboratory of Geographic Information Science, Ministry of Education, East China Normal University, Shanghai, China
7. School of Geographic Sciences, East China Normal University, Shanghai, China