Alexander Robel, Georgia Institute of Technology Main Campus, Atlanta, GA, United States, Gerard Roe, University of Washington, Seattle, Department of Earth and Space Sciences, Seattle, WA, United States, Helene L Seroussi, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Marianne Haseloff, University of British Columbia, Vancouver, BC, Canada and John Erich Christian, University of Washington, Earth and Space Sciences, Seattle, WA, United States