1. Department of Geography Binghamton University Binghamton New York USA
2. Office of Research and Development U.S. Environmental Protection Agency Cincinnati Ohio USA
3. Department of Geography and Anthropology Louisiana State University Baton Rouge Louisiana USA
4. Geosciences and Environmental Change Science Center U.S. Geological Survey Denver Colorado USA
5. Office of Research and Development U.S. Environmental Protection Agency Las Vegas Nevada USA
6. Department of Geography University of Cincinnati Cincinnati Ohio USA