Helene L Seroussi¹, Sophie Nowicki², Ayako Abe-Ouchi³, Cecile Agosta⁴, Xylar Asay-Davis⁵, Alice M Barthel⁶, Reinhard Calov⁷, Christophe Dumas⁸, Heiko Goelzer⁹, Nicholas R Golledge¹⁰, Jonathan M Gregory¹¹, Ralf Greve¹², Angelika Humbert¹³, Philippe Huybrechts¹⁴, Nicolas Jourdain¹⁵, Thomas Kleiner¹³, Eric Y Larour¹, Gunter Leguy¹⁶, William Lipscomb¹⁷, Christopher M Little¹⁸, Daniel Lowry¹⁰, Mathieu Morlighem¹⁹, Frank Pattyn²⁰, Antony John Payne²¹, Tyler Pelle¹⁹, Aurélien Quiquet²², Ronja Reese⁷, Nicole Schlegel²³, Andrew Shepherd²⁴, Erika Simon²⁵, Fiammetta Straneo²⁶, Sainan Sun²⁰, Jonas Van Breedam²⁷, Roderik van de Wal²⁸ and Ricarda Winkelmann⁷, (1)Jet Propulsion Laboratory, Pasadena, CA, United States, (2)NASA GSFC, Greenbelt, MD, United States, (3)University of Tokyo, Atmosphere and Ocean Research Institute, Bunkyo-ku, Japan, (4)University of Liège, Geography, Liège, Belgium, (5)Potsdam Institute for Climate Impact Research, Earth System Analysis, Potsdam, Germany, (6)Los Alamos National Laboratory, Los Alamos, NM, United States, (7)Potsdam Institute for Climate Impact Research, Potsdam, Germany, (8)LSCE CEA/CNRS, Gif Sur Yvette, France, (9)Utrecht University, Institute for Marine and Atmospheric Research, Utrecht, Netherlands, (10)Victoria University of Wellington, Antarctic Research Centre, Wellington, New Zealand, (11)National Centre for Atmospheric Science, University of Reading, Reading, United Kingdom, (12)Hokkaido University, Institute of Low Temperature Science, Sapporo, Japan, (13)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (14)University of Copenhagen, Centre for Ice and climate, Copenhagen, Denmark, (15)CNRS - Université Grenoble Alpes - Institut des Géosciences de l'Environnement, Saint-Martin d’Hères, France, (16)National Center for Atmospheric Research, Boulder, CO, United States, (17)Los Alamos Natl Lab, Los Alamos, CO, United States, (18)Princeton University, Princeton, NJ, United States, (19)University of California - Irvine, Irvine, CA, United States, (20)Université Libre de Bruxelles, Brussel, Belgium, (21)University of Bristol, Bristol, BS8, United Kingdom, (22)Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, Paris, France, (23)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (24)University of Leeds, Leeds, LS2, United Kingdom, (25)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (26)Scripps Institution of Oceanography, La Jolla, CA, United States, (27)Vrije Universiteit Brussels, Brussels, Belgium, (28)Utrecht University, Utrecht, Netherlands