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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Mass balance of the Greenland and Antarctic ice sheets from 1992 to 2020
AU - The IMBIE Team
AU - Otosaka, Inès N.
AU - Shepherd, Andrew
AU - Ivins, Erik R.
AU - Schlegel, Nicole-Jeanne
AU - Amory, Charles
AU - van den Broeke, Michiel R.
AU - Horwath, Martin
AU - Joughin, Ian
AU - King, Michalea D.
AU - Krinner, Gerhard
AU - Nowicki, Sophie
AU - Payne, Anthony J.
AU - Rignot, Eric
AU - Scambos, Ted
AU - Simon, Karen M.
AU - Smith, Benjamin E.
AU - Sørensen, Louise S.
AU - Velicogna, Isabella
AU - Whitehouse, Pippa L.
AU - A, Geruo
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, Noel
AU - Groh, Andreas
AU - Gunter, Brian C.
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 D.
AU - McMillan, Malcolm
AU - Melini, Daniele
AU - Mernild, Sebastian H.
AU - Mottram, Ruth
AU - Mouginot, Jeremie
AU - Nilsson, Johan
AU - Noël, Brice
AU - Pattle, Mark E.
PY - 2023/4/20
Y1 - 2023/4/20
N2 - Ice losses from the Greenland and Antarctic ice sheets have accelerated since the 1990s, accounting for a significant increase in the 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, with a small gain of 3±15 Gt yr−1, but is the most uncertain component of Antarctica's mass balance. The dataset is publicly available at https://doi.org/10.5285/77B64C55-7166-4A06-9DEF-2E400398E452 (IMBIE Team, 2021).
AB - Ice losses from the Greenland and Antarctic ice sheets have accelerated since the 1990s, accounting for a significant increase in the 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, with a small gain of 3±15 Gt yr−1, but is the most uncertain component of Antarctica's mass balance. The dataset is publicly available at https://doi.org/10.5285/77B64C55-7166-4A06-9DEF-2E400398E452 (IMBIE Team, 2021).
KW - General Earth and Planetary Sciences
U2 - 10.5194/essd-15-1597-2023
DO - 10.5194/essd-15-1597-2023
M3 - Journal article
VL - 15
SP - 1597
EP - 1616
JO - Earth System Science Data
JF - Earth System Science Data
SN - 1866-3508
IS - 4
ER -