1. Department of Geography University of Colorado Boulder Boulder Colorado USA
2. Institute of Arctic and Alpine Research University of Colorado Boulder Boulder Colorado USA
3. Jet Propulsion Laboratory California Institute of Technology Pasadena California USA
4. Department of Civil, Environmental, and Architectural Engineering University of Colorado Boulder Boulder Colorado USA
5. Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder Colorado USA
6. Department of Natural Resources and Environmental Science University of Nevada, Reno Reno Nevada USA