Gregory Yetman, Center for International Earth Science Information Network, Palisades, NY, United States, Andrea E Gaughan, University of Louisville, Louisville, KY, United States, Forrest R. Stevens, University of Louisville, Geography and Geosciences, Louisville, KY, United States, Andreas Gros, Organization Not Listed, Washington, DC, United States and Jane Mills, Columbia University of New York, CIESIN, Palisades, NY, United States