Alexander M de Sherbinin, Center for International Earth Science Information Network, Palisades, NY, United States, Anamaria Bukvic, Virginia Polytechnic Institute and State University, Department of Geography, Blacksburg, VA, United States, Guillaume Thibaut Rohat, University of Geneva, Geneva, Switzerland, Brent McCusker, West Virginia University, Morgantown, WV, United States, Denis Macharia, Regional Center for Mapping Resources for Development, Nairobi, Kenya and Olga Wilhelmi, NCAR, Boulder, CO, United States