••
Centre national de la recherche scientifique1, Chinese Academy of Sciences2, Arctic and Antarctic Research Institute3, Instituto Antártico Argentino4, Universidade Federal do Rio Grande do Sul5, Ohio State University6, ENEA7, Joseph Fourier University8, University of Trieste9, Norwegian Polar Institute10, Hebrew University of Jerusalem11, Utrecht University12, Autonomous University of Madrid13, Australian Antarctic Division14, National Institute of Polar Research15, Cooperative Institute for Research in Environmental Sciences16, Goddard Institute for Space Studies17, University of Innsbruck18, University of Washington19