Mathieu Morlighem¹, Eric J Rignot², Tobias Binder³, Donald D Blankenship⁴, Reinhard Drews⁵, Graeme Eagles⁶, Olaf Eisen⁷, Fausto Ferraccioli⁸, Rene Forsberg⁹, Peter Fretwell⁸, Vikram Goel¹⁰, Gudmundur Hilmar Gudmundsson¹¹, Veit Helm⁶, Coen M Hofstede¹², Angelika Humbert⁶, Wilfried Jokat⁶, Nanna B. Karlsson¹³, Kenichi Matsuoka¹⁴, Romain Millan¹⁵, Jeremie Mouginot², John Drysdale Paden¹⁶, Frank Pattyn¹⁷, Jason L Roberts¹⁸, Sebastian Harry Reid Rosier¹⁹, Antonia Stefanie Ruppel²⁰, Helene L Seroussi²¹, Emma C Smith¹², Daniel Steinhage⁶, Michiel R van den Broeke²², Tas D van Ommen¹⁸, Melchoir Van Wessem²³, Duncan A Young²⁴ and Sun Bo²⁵, (1)University of California Irvine, Irvine, CA, United States, (2)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (3)Alfred Wegener Inst, Bremenhaven, Germany, (4)University of Texas, Institute for Geophysics, Austin, TX, United States, (5)University of Bremen, Bremen, Germany, (6)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, (7)University of Bremen, Department of Geosciences, Bremen, Germany, (8)NERC British Antarctic Survey, Cambridge, United Kingdom, (9)Technical University of Denmark - Space, Kongens Lyngby, Denmark, (10)NATIONAL CENTRE FOR POLAR AND OCEAN RESEARCH, Goa, India, (11)Northumbria University, Geography and Environmental Sciences, Newcastle-Upon-Tyne, United Kingdom, (12)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research (AWI), Division of Geosciences, Bremerhaven, Germany, (13)University of Copenhagen, Copenhagen, Denmark, (14)Norwegian Polar Institute, Tromsø, Norway, (15)University of Grenoble Alpes, Grenoble, France, (16)University of Kansas, Lawrence, United States, (17)Université Libre de Bruxelles, Brussel, Belgium, (18)Australian Antarctic Division, Kingston, Australia, (19)Northumbria University, Newcastle, United Kingdom, (20)BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, (21)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (22)Utrecht University, Institute for Marine and Atmospheric Research Utrecht, Utrecht, Netherlands, (23)Utrecht University, Utrecht, Netherlands, (24)Institute for Geophysics, Austin, TX, United States, (25)Polar Research Institute of China, Shanghai, China