John J Yackel, University of Calgary, Geography, Calgary, AB, Canada, Rasmus T Tonboe, Danish Technical University, Copenhagen, Denmark, Dustin Isleifson, University of Manitoba, Centre for Earth Observation Science, Winnipeg, MB, Canada, Alexandre Langlois, University of Sherbrooke, Sherbrooke, QC, Canada, Juha Lemmetyinen, Finnish Meteorological Institute, Helsinki, Finland, Melody J Sandells, Northumbria University, Newcastle-Upon-Tyne, United Kingdom, Randall K Scharien, University of Victoria, Geography, Victoria, BC, Canada, Henriette Skourup, National Space Institute, Copenhagen, Denmark, Gunnar Spreen, Norwegian Polar Institute, Tromsø, Norway and Julienne Stroeve, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany