Patrick M Alexander, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, Damien Ringeisen, Environment and Climate Change Canada, Victoria, BC, Canada, Lettie Roach, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, Brooke Medley, NASA Goddard Space Flight Center, Greenbelt, MD, United States, C. M. Stevens, University of Maryland College Park, College Park, United States, Igor D Aleinov, Columbia University in the City of New York, New York, United States, Kenneth D Mankoff, NASA Goddard Institute for Space Studies, New York, United States, Xavier Fettweis, University of Liège, Département de Géographie, Liège, Belgium and Gavin A Schmidt, NASA/GISS, New York, United States