1. Department of Geography University of Utah Salt Lake City Utah USA
2. Cryospheric Sciences Laboratory, Code 615 NASA Goddard Space Flight Center Greenbelt Maryland USA
3. Universities Space Research Association Goddard Earth Sciences Technology and Research Studies and Investigations Columbia Maryland USA
4. National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences University of Colorado Boulder Boulder Colorado USA
5. Department of Geology and Geophysics University of Utah Salt Lake City Utah USA
6. Center for Remote Sensing of Ice Sheets University of Kansas Lawrence Kansas USA
7. Geological Survey of Denmark and Greenland (GEUS) Copenhagen Denmark
8. Byrd Climate and Research Center Ohio State University Columbus Ohio USA