1. Climate Change Institute, University of Maine, Orono, ME, USA
2. Department of Earth Sciences, University of Maine, Orono, ME, USA
3. Department of Earth and Atmospheric Sciences and School of Natural Resources, University of Nebraska, Lincoln, NE, USA
4. Natural Sciences, Paul Smith's College, Paul Smiths, NY, USA
5. Desert Research Institute, University/Community College System Nevada, Reno, NV, USA
6. Quaternary Research Center, University of Washington, Seattle, WA, USA
7. Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, USA
8. Joint Antarctic Institute, Victoria University and GNS Science, Wellington, New Zealand
9. Department of Environment and Geography, Macquarie University, NSW, Australia
10. Centro Polar e Climático, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
11. Instituto Antártico Chileno (INACH), Punta Arenas, Chile
12. Servicio Nacional de Geología y Minería (SERNAGEOMIN), Santiago, Chile
13. Department of Computer Sciences, University of Maine, Orono, ME, USA