Fausto Ferraccioli, NERC British Antarctic Survey, Cambridge, United Kingdom, Tom A Jordan, British Antarctic Survey, Cambridge, United Kingdom, Rene Forsberg, Technical University of Denmark - Space, Kongens Lyngby, Denmark, Graeme Eagles, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Geophysics, Bremerhaven, Germany, Kenichi Matsuoka, Norwegian Polar Institute, Tromsø, Norway, Nick Kusznir, University of Liverpool, Liverpool, United Kingdom, Guy Paxman, University of Durham, Durham, United Kingdom, Bruce M Eglington, University of Saskatchewan, Saskatchewan Isotope Laboratory, Saskatoon, SK, Canada and Tania G D Casal, ESA/ESTEC, Noordwijk Zh, Netherlands