1. Department of Geography & Environmental Studies, UNM Center for the Advancement of Spatial Informatics Research and Education (ASPIRE), University of New Mexico, Albuquerque, NM, USA
2. School of Geographical and Earth Sciences, University of Glasgow, Glasgow, UK
3. Department of Geography, Oklahoma State University, Stillwater, OK, USA
4. Department of Geography & Environmental Studies, University of New Mexico, Albuquerque, NM, USA