1. Department of Geosciences, and Earth and Environmental Systems Institute; Pennsylvania State University; University Park Pennsylvania USA
2. Terrestrial and Cryospheric Sciences Branch; Cold Regions Research and Engineering Laboratory; Hanover New Hampshire USA
3. Geosciences and Environmental Change Science Center; U.S. Geological Survey; Denver Colorado USA
4. Department of Earth and Planetary Science; University of California; Berkeley California USA
5. Division of Hydrologic Sciences; Desert Research Institute; Reno Nevada USA
6. School of Physical Sciences; Lake Superior State University; Sault Sainte Marie Michigan USA