Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020
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)...
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ftcopernicus:oai:publications.copernicus.org:essdd105477 2023-05-15T13:38:41+02:00 Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020 Otosaka, Inès N. Shepherd, Andrew Ivins, Erik R. Schlegel, Nicole-Jeanne Amory, Charles Broeke, Michiel Horwath, Martin Joughin, Ian King, Michalea Krinner, Gerhard Nowicki, Sophie Payne, Tony Rignot, Eric Scambos, Ted Simon, Karen M. Smith, Benjamin Sandberg Sørensen, Louise Velicogna, Isabella Whitehouse, Pippa A, Geruo Agosta, Cécile Ahlstrøm, Andreas P. Blazquez, Alejandro Colgan, William Engdahl, Marcus Fettweis, Xavier Forsberg, Rene Gallée, Hubert Gardner, Alex Gilbert, Lin Gourmelen, Noel Groh, Andreas Gunter, Brian C. Harig, Christopher Helm, Veit Khan, Shfaqat Abbas Konrad, Hannes Langen, Peter Lecavalier, Benoit Liang, Chia-Chun Loomis, Bryant McMillan, Malcolm Melini, Daniele Mernild, Sebastian H. Mottram, Ruth Mouginot, Jeremie Nilsson, Johan Noël, Brice Pattle, Mark E. Peltier, William R. 2022-08-30 application/pdf https://doi.org/10.5194/essd-2022-261 https://essd.copernicus.org/preprints/essd-2022-261/ eng eng doi:10.5194/essd-2022-261 https://essd.copernicus.org/preprints/essd-2022-261/ eISSN: 1866-3516 Text 2022 ftcopernicus https://doi.org/10.5194/essd-2022-261 2022-09-05T16:22:56Z 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. Text Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Greenland Ice Sheet West Antarctica Copernicus Publications: E-Journals Antarctic Antarctic Peninsula East Antarctica Greenland The Antarctic West Antarctica |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
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. |
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Otosaka, Inès N. Shepherd, Andrew Ivins, Erik R. Schlegel, Nicole-Jeanne Amory, Charles Broeke, Michiel Horwath, Martin Joughin, Ian King, Michalea Krinner, Gerhard Nowicki, Sophie Payne, Tony Rignot, Eric Scambos, Ted Simon, Karen M. Smith, Benjamin Sandberg Sørensen, Louise Velicogna, Isabella Whitehouse, Pippa A, Geruo Agosta, Cécile Ahlstrøm, Andreas P. Blazquez, Alejandro Colgan, William Engdahl, Marcus Fettweis, Xavier Forsberg, Rene Gallée, Hubert Gardner, Alex Gilbert, Lin Gourmelen, Noel Groh, Andreas Gunter, Brian C. Harig, Christopher Helm, Veit Khan, Shfaqat Abbas Konrad, Hannes Langen, Peter Lecavalier, Benoit Liang, Chia-Chun Loomis, Bryant McMillan, Malcolm Melini, Daniele Mernild, Sebastian H. Mottram, Ruth Mouginot, Jeremie Nilsson, Johan Noël, Brice Pattle, Mark E. Peltier, William R. |
spellingShingle |
Otosaka, Inès N. Shepherd, Andrew Ivins, Erik R. Schlegel, Nicole-Jeanne Amory, Charles Broeke, Michiel Horwath, Martin Joughin, Ian King, Michalea Krinner, Gerhard Nowicki, Sophie Payne, Tony Rignot, Eric Scambos, Ted Simon, Karen M. Smith, Benjamin Sandberg Sørensen, Louise Velicogna, Isabella Whitehouse, Pippa A, Geruo Agosta, Cécile Ahlstrøm, Andreas P. Blazquez, Alejandro Colgan, William Engdahl, Marcus Fettweis, Xavier Forsberg, Rene Gallée, Hubert Gardner, Alex Gilbert, Lin Gourmelen, Noel Groh, Andreas Gunter, Brian C. Harig, Christopher Helm, Veit Khan, Shfaqat Abbas Konrad, Hannes Langen, Peter Lecavalier, Benoit Liang, Chia-Chun Loomis, Bryant McMillan, Malcolm Melini, Daniele Mernild, Sebastian H. Mottram, Ruth Mouginot, Jeremie Nilsson, Johan Noël, Brice Pattle, Mark E. Peltier, William R. Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020 |
author_facet |
Otosaka, Inès N. Shepherd, Andrew Ivins, Erik R. Schlegel, Nicole-Jeanne Amory, Charles Broeke, Michiel Horwath, Martin Joughin, Ian King, Michalea Krinner, Gerhard Nowicki, Sophie Payne, Tony Rignot, Eric Scambos, Ted Simon, Karen M. Smith, Benjamin Sandberg Sørensen, Louise Velicogna, Isabella Whitehouse, Pippa A, Geruo Agosta, Cécile Ahlstrøm, Andreas P. Blazquez, Alejandro Colgan, William Engdahl, Marcus Fettweis, Xavier Forsberg, Rene Gallée, Hubert Gardner, Alex Gilbert, Lin Gourmelen, Noel Groh, Andreas Gunter, Brian C. Harig, Christopher Helm, Veit Khan, Shfaqat Abbas Konrad, Hannes Langen, Peter Lecavalier, Benoit Liang, Chia-Chun Loomis, Bryant McMillan, Malcolm Melini, Daniele Mernild, Sebastian H. Mottram, Ruth Mouginot, Jeremie Nilsson, Johan Noël, Brice Pattle, Mark E. Peltier, William R. |
author_sort |
Otosaka, Inès N. |
title |
Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020 |
title_short |
Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020 |
title_full |
Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020 |
title_fullStr |
Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020 |
title_full_unstemmed |
Mass Balance of the Greenland and Antarctic Ice Sheets from 1992 to 2020 |
title_sort |
mass balance of the greenland and antarctic ice sheets from 1992 to 2020 |
publishDate |
2022 |
url |
https://doi.org/10.5194/essd-2022-261 https://essd.copernicus.org/preprints/essd-2022-261/ |
geographic |
Antarctic Antarctic Peninsula East Antarctica Greenland The Antarctic West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula East Antarctica Greenland The Antarctic West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Greenland Ice Sheet West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Greenland Ice Sheet West Antarctica |
op_source |
eISSN: 1866-3516 |
op_relation |
doi:10.5194/essd-2022-261 https://essd.copernicus.org/preprints/essd-2022-261/ |
op_doi |
https://doi.org/10.5194/essd-2022-261 |
_version_ |
1766109525525397504 |