Mass balance of the Antarctic Ice Sheet from 1992 to 2017
The Antarctic Ice Sheet is an important indicator of climate change and driver of sea-level rise. Here we combine satellite observations of its changing volume, flow and gravitational attraction with modelling of its surface mass balance to show that it lost 2,720 ± 1,390 billion tonnes of ice betwe...
Published in: | Nature |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://curis.ku.dk/portal/da/publications/mass-balance-of-the-antarctic-ice-sheet-from-1992-to-2017(200fdfca-3f03-4d07-ba18-1d66a03eaeb5).html https://doi.org/10.1038/s41586-018-0179-y |
id |
ftcopenhagenunip:oai:pure.atira.dk:publications/200fdfca-3f03-4d07-ba18-1d66a03eaeb5 |
---|---|
record_format |
openpolar |
spelling |
ftcopenhagenunip:oai:pure.atira.dk:publications/200fdfca-3f03-4d07-ba18-1d66a03eaeb5 2024-04-21T07:51:07+00:00 Mass balance of the Antarctic Ice Sheet from 1992 to 2017 2018 https://curis.ku.dk/portal/da/publications/mass-balance-of-the-antarctic-ice-sheet-from-1992-to-2017(200fdfca-3f03-4d07-ba18-1d66a03eaeb5).html https://doi.org/10.1038/s41586-018-0179-y eng eng info:eu-repo/semantics/closedAccess IMBIE 2018 , ' Mass balance of the Antarctic Ice Sheet from 1992 to 2017 ' , Nature , vol. 558 , no. 7709 , pp. 219-222 . https://doi.org/10.1038/s41586-018-0179-y article 2018 ftcopenhagenunip https://doi.org/10.1038/s41586-018-0179-y 2024-04-11T00:22:38Z The Antarctic Ice Sheet is an important indicator of climate change and driver of sea-level rise. Here we combine satellite observations of its changing volume, flow and gravitational attraction with modelling of its surface mass balance to show that it lost 2,720 ± 1,390 billion tonnes of ice between 1992 and 2017, which corresponds to an increase in mean sea level of 7.6 ± 3.9 millimetres (errors are one standard deviation). Over this period, ocean-driven melting has caused rates of ice loss from West Antarctica to increase from 53 ± 29 billion to 159 ± 26 billion tonnes per year; ice-shelf collapse has increased the rate of ice loss from the Antarctic Peninsula from 7 ± 13 billion to 33 ± 16 billion tonnes per year. We find large variations in and among model estimates of surface mass balance and glacial isostatic adjustment for East Antarctica, with its average rate of mass gain over the period 1992-2017 (5 ± 46 billion tonnes per year) being the least certain. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Ice Shelf West Antarctica University of Copenhagen: Research Nature 558 7709 219 222 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
The Antarctic Ice Sheet is an important indicator of climate change and driver of sea-level rise. Here we combine satellite observations of its changing volume, flow and gravitational attraction with modelling of its surface mass balance to show that it lost 2,720 ± 1,390 billion tonnes of ice between 1992 and 2017, which corresponds to an increase in mean sea level of 7.6 ± 3.9 millimetres (errors are one standard deviation). Over this period, ocean-driven melting has caused rates of ice loss from West Antarctica to increase from 53 ± 29 billion to 159 ± 26 billion tonnes per year; ice-shelf collapse has increased the rate of ice loss from the Antarctic Peninsula from 7 ± 13 billion to 33 ± 16 billion tonnes per year. We find large variations in and among model estimates of surface mass balance and glacial isostatic adjustment for East Antarctica, with its average rate of mass gain over the period 1992-2017 (5 ± 46 billion tonnes per year) being the least certain. |
format |
Article in Journal/Newspaper |
title |
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 |
spellingShingle |
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 |
title_short |
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 |
title_full |
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 |
title_fullStr |
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 |
title_full_unstemmed |
Mass balance of the Antarctic Ice Sheet from 1992 to 2017 |
title_sort |
mass balance of the antarctic ice sheet from 1992 to 2017 |
publishDate |
2018 |
url |
https://curis.ku.dk/portal/da/publications/mass-balance-of-the-antarctic-ice-sheet-from-1992-to-2017(200fdfca-3f03-4d07-ba18-1d66a03eaeb5).html https://doi.org/10.1038/s41586-018-0179-y |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Ice Shelf West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ice Sheet Ice Shelf West Antarctica |
op_source |
IMBIE 2018 , ' Mass balance of the Antarctic Ice Sheet from 1992 to 2017 ' , Nature , vol. 558 , no. 7709 , pp. 219-222 . https://doi.org/10.1038/s41586-018-0179-y |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1038/s41586-018-0179-y |
container_title |
Nature |
container_volume |
558 |
container_issue |
7709 |
container_start_page |
219 |
op_container_end_page |
222 |
_version_ |
1796934589363519488 |