Alex S Gardner, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Chad A Greene, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, Joseph H Kennedy, University of Alaska Fairbanks, Alaska Satellite Facility, Fairbanks, United States, Mark A Fahnestock, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, United States, Maria Liukis, NASA Jet Propulsion Laboratory, Pasadena, United States, Luis Lopez Espinosa, National Snow and Ice Data Center, Boulder, CO, United States, Yang Lei, Caltech, Pasadena, CA, United States, Ted A Scambos, University of Colorado, Boulder, Boulder, Colorado, United States and Amaury Dehecq, University of Grenoble Alpes, CNRS, IRD, Grenoble INP, IGE, Grenoble, France