1. Center for Spatial Information Science and Systems (CSISS) and the Department of Geography and Geoinformation Science, George Mason University, Fairfax, VA, USA
2. Global Environment and Resources Institute and the Department of Geography and Geoinformation Science, George Mason University, Fairfax, VA, USA
3. Center for Spatial Information Science and Systems (CSISS) and the Department of Atmospheric, Oceanic & Earth Sciences, George Mason University, Fairfax, VA, USA
4. Skyline High School, Sammamish, WA, USA