The influence of inter-annual temperature variability on the Greenland Ice Sheet volume
Abstract The Greenland Ice Sheet has become an increasingly larger contributor to sea level rise in the past two decades and is projected to continue to lose mass. Climate variability is expected to increase under future warming, but the effect of climate variability on the Greenland Ice Sheet volum...
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Online Access: | http://dx.doi.org/10.1017/aog.2023.53 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000538 |
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crcambridgeupr:10.1017/aog.2023.53 2024-06-23T07:45:35+00:00 The influence of inter-annual temperature variability on the Greenland Ice Sheet volume Lauritzen, Mikkel Aðalgeirsdóttir, Guðfinna Rathmann, Nicholas Grinsted, Aslak Noël, Brice Hvidberg, Christine S. 2023 http://dx.doi.org/10.1017/aog.2023.53 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000538 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Annals of Glaciology page 1-8 ISSN 0260-3055 1727-5644 journal-article 2023 crcambridgeupr https://doi.org/10.1017/aog.2023.53 2024-06-05T04:04:01Z Abstract The Greenland Ice Sheet has become an increasingly larger contributor to sea level rise in the past two decades and is projected to continue to lose mass. Climate variability is expected to increase under future warming, but the effect of climate variability on the Greenland Ice Sheet volume is poorly understood and is adding to the uncertainty of the projected mass loss. Here we quantify the influence of inter-annual temperature variability on mass loss from the Greenland Ice Sheet using the PISM model. We construct an ensemble of temperature-forcing fields that accounts for inter-annual variability in temperature using reanalysis data from NOAA-CIRES over the period 1851–2014. We investigate the steady-state and transient response of the Greenland Ice Sheet. We find that the simulated steady-state ice-sheet volume decreases by 1.9 ± 0.4 cm of sea level equivalent when forced with a varying temperature forcing compared to a constant temperature forcing, and by 11.5 ± 1.4 cm when the variability is doubled. The northern basins are particularly sensitive with a change in volume of 0.9–1.1%. Our results emphasize the importance of including temperature variability in projections of future mass loss. Article in Journal/Newspaper Annals of Glaciology Greenland Ice Sheet Cambridge University Press Greenland Annals of Glaciology 1 8 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract The Greenland Ice Sheet has become an increasingly larger contributor to sea level rise in the past two decades and is projected to continue to lose mass. Climate variability is expected to increase under future warming, but the effect of climate variability on the Greenland Ice Sheet volume is poorly understood and is adding to the uncertainty of the projected mass loss. Here we quantify the influence of inter-annual temperature variability on mass loss from the Greenland Ice Sheet using the PISM model. We construct an ensemble of temperature-forcing fields that accounts for inter-annual variability in temperature using reanalysis data from NOAA-CIRES over the period 1851–2014. We investigate the steady-state and transient response of the Greenland Ice Sheet. We find that the simulated steady-state ice-sheet volume decreases by 1.9 ± 0.4 cm of sea level equivalent when forced with a varying temperature forcing compared to a constant temperature forcing, and by 11.5 ± 1.4 cm when the variability is doubled. The northern basins are particularly sensitive with a change in volume of 0.9–1.1%. Our results emphasize the importance of including temperature variability in projections of future mass loss. |
format |
Article in Journal/Newspaper |
author |
Lauritzen, Mikkel Aðalgeirsdóttir, Guðfinna Rathmann, Nicholas Grinsted, Aslak Noël, Brice Hvidberg, Christine S. |
spellingShingle |
Lauritzen, Mikkel Aðalgeirsdóttir, Guðfinna Rathmann, Nicholas Grinsted, Aslak Noël, Brice Hvidberg, Christine S. The influence of inter-annual temperature variability on the Greenland Ice Sheet volume |
author_facet |
Lauritzen, Mikkel Aðalgeirsdóttir, Guðfinna Rathmann, Nicholas Grinsted, Aslak Noël, Brice Hvidberg, Christine S. |
author_sort |
Lauritzen, Mikkel |
title |
The influence of inter-annual temperature variability on the Greenland Ice Sheet volume |
title_short |
The influence of inter-annual temperature variability on the Greenland Ice Sheet volume |
title_full |
The influence of inter-annual temperature variability on the Greenland Ice Sheet volume |
title_fullStr |
The influence of inter-annual temperature variability on the Greenland Ice Sheet volume |
title_full_unstemmed |
The influence of inter-annual temperature variability on the Greenland Ice Sheet volume |
title_sort |
influence of inter-annual temperature variability on the greenland ice sheet volume |
publisher |
Cambridge University Press (CUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1017/aog.2023.53 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0260305523000538 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Annals of Glaciology Greenland Ice Sheet |
genre_facet |
Annals of Glaciology Greenland Ice Sheet |
op_source |
Annals of Glaciology page 1-8 ISSN 0260-3055 1727-5644 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/aog.2023.53 |
container_title |
Annals of Glaciology |
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1 |
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8 |
_version_ |
1802641341582147584 |