Mass balance of the Antarctic Ice Sheet from 1992 to 2017

UNSPECIFIED (2018) Mass balance of the Antarctic Ice Sheet from 1992 to 2017. Nature, 558 (7709). pp. 219-222. ISSN 0028-0836

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Nature
Additional Information:
© 2018 Macmillan Publishers Limited, part of Springer Nature. This is an author produced version of a paper published in Nature. Uploaded in accordance with the publisher's self-archiving policy.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1000
Subjects:
?? general ??
ID Code:
128839
Deposited By:
Deposited On:
06 Nov 2018 10:12
Refereed?:
Yes
Published?:
Published
Last Modified:
17 Mar 2024 00:41