Lars Henrik Smedsrud, University of Bergen, Bergen, Norway, Marius Årthun, Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway, Philipp Anhaus Mr., Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Sea Ice Physics, Bremerhaven, Germany and Fiammetta Straneo, Scripps Institution of Oceanography, La Jolla, CA, United States