Rebecca R Ghent, Planetary Science Institute Tucson, Tucson, United States, Lynn M Carter, NASA Goddard Space Flight Cent, Greenbelt, MD, United States, Zoe Courville, CRREL, Hanover, NH, United States, Lora Koenig, NSIDC, Boulder, CO, United States, Michelle R Koutnik, University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States and Ali M Bramson, University of Arizona, Lunar and Planetary Laboratory, Tucson, AZ, United States