Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020

Published: 2023-04-20
Venue: Earth system science data, vol. 15, no. 4, pp. 1597-1616
Cited by: 335
Open access: Yes, gold
DOI: 10.5194/essd-15-1597-2023

Abstract

Ice losses from the Greenland and Antarctic Ice Sheets have accelerated since the 1990s, accounting for a significant increase in global mean sea level. Here, we present a new 29-year record of ice sheet mass balance from 1992 to 2020 from the Ice Sheet Mass Balance Inter-comparison Exercise (IMBIE). We compare and combine 50 independent estimates of ice sheet mass balance derived from satellite observations of temporal changes in ice sheet flow, in ice sheet volume and in Earth’s gravity field. Between 1992 and 2020, the ice sheets contributed 21.0 ± 1.9 mm to global mean sea-level, with the rate of mass loss rising from 105 Gt yr-1 between 1992 and 1996 to 372 Gt yr-1 between 2016 and 2020. In Greenland, the rate of mass loss is 169 ± 9 Gt yr-1 between 1992 and 2020 but there are large inter-annual variations in mass balance with mass loss ranging from 86 Gt yr-1 in 2017 to 444 Gt yr-1 in 2019 due to large variability in surface mass balance. In Antarctica, ice losses continue to be dominated by mass loss from West Antarctica (-82 ± 9 Gt yr-1) and to a lesser extent from the Antarctic Peninsula (-13 ± 5 Gt yr-1). East Antarctica remains close to a state of balance (3 ± 15 Gt yr-1), but is the most uncertain component of Antarctica’s mass balance.

@article{otosaka2023mass, title = {{Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020}}, author = {Inès Otosaka and Andrew P. Shepherd and Erik R. Ivins and Nicole‐Jeanne Schlegel and Charles Amory and M. R. van den Broeke and Martin Horwath and Ian R. Joughin and Michalea D. King and Gerhard Krinner and Sophie Nowicki and Anthony J. Payne and Eric J. Rignot and T. A. Scambos and Karen M. Simon and B. E. Smith and Louise Sandberg Sørensen and I. Velicogna and Pippa L. Whitehouse and A Geruo and Cécile Agosta and Andreas P. Ahlstrøm and Alejandro Blazquez and William Colgan and Marcus E. Engdahl and Xavier Fettweis and Rene Forsberg and Hubert Gallée and Alex Gardner and Lin Gilbert and Noël Gourmelen and Andreas Groh and Brian Christopher Gunter and Christopher Harig and Veit Helm and Shfaqat Abbas Khan and Christoph Kittel and Hannes Konrad and Peter L. Langen and Benoit S. Lecavalier and Chia-Chun Liang and Bryant Loomis and Malcolm McMillan and Daniele Melini and Sebastian H. Mernild and Ruth H. Mottram and J. Mouginot and Johan Nilsson and Brice P. Y. Noel and Mark E. Pattle and W. R. Peltier and Nadège Pie and Mònica Roca and Ingo Sasgen and Himanshu V. Save and Ki‐Weon Seo and B. Scheuchl and Ernst Schrama and Ludwig Schröder and Sebastian Bjerregaaard Simonsen and Thomas Slater and Giorgio Spada and Tyler Clark Sutterley and Bramha Dutt Vishwakarma and Jan Melchior van Wessem and David N. Wiese and Wouter van der Wal and Bert Wouters}, journal = {Earth system science data}, year = {2023}, volume = {15}, number = {4}, pages = {1597--1616}, doi = {10.5194/essd-15-1597-2023}, url = {https://doi.org/10.5194/essd-15-1597-2023} }

TY - JOUR AU - Otosaka, Inès AU - Shepherd, Andrew P. AU - Ivins, Erik R. AU - Schlegel, Nicole‐Jeanne AU - Amory, Charles AU - Broeke, M. R. van den AU - Horwath, Martin AU - Joughin, Ian R. AU - King, Michalea D. AU - Krinner, Gerhard AU - Nowicki, Sophie AU - Payne, Anthony J. AU - Rignot, Eric J. AU - Scambos, T. A. AU - Simon, Karen M. AU - Smith, B. E. AU - Sørensen, Louise Sandberg AU - Velicogna, I. AU - Whitehouse, Pippa L. AU - Geruo, A AU - Agosta, Cécile AU - Ahlstrøm, Andreas P. AU - Blazquez, Alejandro AU - Colgan, William AU - Engdahl, Marcus E. AU - Fettweis, Xavier AU - Forsberg, Rene AU - Gallée, Hubert AU - Gardner, Alex AU - Gilbert, Lin AU - Gourmelen, Noël AU - Groh, Andreas AU - Gunter, Brian Christopher AU - Harig, Christopher AU - Helm, Veit AU - Khan, Shfaqat Abbas AU - Kittel, Christoph AU - Konrad, Hannes AU - Langen, Peter L. AU - Lecavalier, Benoit S. AU - Liang, Chia-Chun AU - Loomis, Bryant AU - McMillan, Malcolm AU - Melini, Daniele AU - Mernild, Sebastian H. AU - Mottram, Ruth H. AU - Mouginot, J. AU - Nilsson, Johan AU - Noel, Brice P. Y. AU - Pattle, Mark E. AU - Peltier, W. R. AU - Pie, Nadège AU - Roca, Mònica AU - Sasgen, Ingo AU - Save, Himanshu V. AU - Seo, Ki‐Weon AU - Scheuchl, B. AU - Schrama, Ernst AU - Schröder, Ludwig AU - Simonsen, Sebastian Bjerregaaard AU - Slater, Thomas AU - Spada, Giorgio AU - Sutterley, Tyler Clark AU - Vishwakarma, Bramha Dutt AU - Wessem, Jan Melchior van AU - Wiese, David N. AU - Wal, Wouter van der AU - Wouters, Bert TI - Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020 JO - Earth system science data VL - 15 IS - 4 SP - 1597 EP - 1616 PY - 2023 DA - 2023/04/20 DO - 10.5194/essd-15-1597-2023 UR - https://doi.org/10.5194/essd-15-1597-2023 ER -

Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020

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Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020

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