Short- and long-term variability of the Antarctic and Greenland ice sheets
The variability of the Antarctic and Greenland ice sheets occurs on various timescales and is important for projections of sea level rise; however, there are substantial uncertainties concerning future ice-sheet mass changes. In this Review, we explore the degree to which short-term fluctuations and...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/438395 2024-05-19T07:32:30+00:00 Short- and long-term variability of the Antarctic and Greenland ice sheets Hanna, Edward Topál, Dániel Box, Jason E. Buzzard, Sammie Christie, Frazer D.W. Hvidberg, Christine Morlighem, Mathieu De Santis, Laura Silvano, Alessandro Colleoni, Florence Sasgen, Ingo Banwell, Alison F. van den Broeke, Michiel R. DeConto, Robert De Rydt, Jan Goelzer, Heiko Gossart, Alexandra Gudmundsson, G. Hilmar Lindbäck, Katrin Miles, Bertie Mottram, Ruth Pattyn, Frank Reese, Ronja Rignot, Eric Srivastava, Aakriti Sun, Sainan Toller, Justin Tuckett, Peter A. Ultee, Lizz Sub Dynamics Meteorology Marine and Atmospheric Research 2024-03 application/pdf https://dspace.library.uu.nl/handle/1874/438395 en eng 2662-138X https://dspace.library.uu.nl/handle/1874/438395 info:eu-repo/semantics/EmbargoedAccess Taverne Pollution Earth-Surface Processes Atmospheric Science Nature and Landscape Conservation Article 2024 ftunivutrecht 2024-04-29T15:16:39Z The variability of the Antarctic and Greenland ice sheets occurs on various timescales and is important for projections of sea level rise; however, there are substantial uncertainties concerning future ice-sheet mass changes. In this Review, we explore the degree to which short-term fluctuations and extreme glaciological events reflect the ice sheets’ long-term evolution and response to ongoing climate change. Short-term (decadal or shorter) variations in atmospheric or oceanic conditions can trigger amplifying feedbacks that increase the sensitivity of ice sheets to climate change. For example, variability in ocean-induced and atmosphere-induced melting can trigger ice thinning, retreat and/or collapse of ice shelves, grounding-line retreat, and ice flow acceleration. The Antarctic Ice Sheet is especially prone to increased melting and ice sheet collapse from warm ocean currents, which could be accentuated with increased climate variability. In Greenland both high and low melt anomalies have been observed since 2012, highlighting the influence of increased interannual climate variability on extreme glaciological events and ice sheet evolution. Failing to adequately account for such variability can result in biased projections of multi-decadal ice mass loss. Therefore, future research should aim to improve climate and ocean observations and models, and develop sophisticated ice sheet models that are directly constrained by observational records and can capture ice dynamical changes across various timescales. Article in Journal/Newspaper Antarc* Antarctic Greenland Ice Sheet Ice Shelves Utrecht University Repository |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
topic |
Taverne Pollution Earth-Surface Processes Atmospheric Science Nature and Landscape Conservation |
spellingShingle |
Taverne Pollution Earth-Surface Processes Atmospheric Science Nature and Landscape Conservation Hanna, Edward Topál, Dániel Box, Jason E. Buzzard, Sammie Christie, Frazer D.W. Hvidberg, Christine Morlighem, Mathieu De Santis, Laura Silvano, Alessandro Colleoni, Florence Sasgen, Ingo Banwell, Alison F. van den Broeke, Michiel R. DeConto, Robert De Rydt, Jan Goelzer, Heiko Gossart, Alexandra Gudmundsson, G. Hilmar Lindbäck, Katrin Miles, Bertie Mottram, Ruth Pattyn, Frank Reese, Ronja Rignot, Eric Srivastava, Aakriti Sun, Sainan Toller, Justin Tuckett, Peter A. Ultee, Lizz Short- and long-term variability of the Antarctic and Greenland ice sheets |
topic_facet |
Taverne Pollution Earth-Surface Processes Atmospheric Science Nature and Landscape Conservation |
description |
The variability of the Antarctic and Greenland ice sheets occurs on various timescales and is important for projections of sea level rise; however, there are substantial uncertainties concerning future ice-sheet mass changes. In this Review, we explore the degree to which short-term fluctuations and extreme glaciological events reflect the ice sheets’ long-term evolution and response to ongoing climate change. Short-term (decadal or shorter) variations in atmospheric or oceanic conditions can trigger amplifying feedbacks that increase the sensitivity of ice sheets to climate change. For example, variability in ocean-induced and atmosphere-induced melting can trigger ice thinning, retreat and/or collapse of ice shelves, grounding-line retreat, and ice flow acceleration. The Antarctic Ice Sheet is especially prone to increased melting and ice sheet collapse from warm ocean currents, which could be accentuated with increased climate variability. In Greenland both high and low melt anomalies have been observed since 2012, highlighting the influence of increased interannual climate variability on extreme glaciological events and ice sheet evolution. Failing to adequately account for such variability can result in biased projections of multi-decadal ice mass loss. Therefore, future research should aim to improve climate and ocean observations and models, and develop sophisticated ice sheet models that are directly constrained by observational records and can capture ice dynamical changes across various timescales. |
author2 |
Sub Dynamics Meteorology Marine and Atmospheric Research |
format |
Article in Journal/Newspaper |
author |
Hanna, Edward Topál, Dániel Box, Jason E. Buzzard, Sammie Christie, Frazer D.W. Hvidberg, Christine Morlighem, Mathieu De Santis, Laura Silvano, Alessandro Colleoni, Florence Sasgen, Ingo Banwell, Alison F. van den Broeke, Michiel R. DeConto, Robert De Rydt, Jan Goelzer, Heiko Gossart, Alexandra Gudmundsson, G. Hilmar Lindbäck, Katrin Miles, Bertie Mottram, Ruth Pattyn, Frank Reese, Ronja Rignot, Eric Srivastava, Aakriti Sun, Sainan Toller, Justin Tuckett, Peter A. Ultee, Lizz |
author_facet |
Hanna, Edward Topál, Dániel Box, Jason E. Buzzard, Sammie Christie, Frazer D.W. Hvidberg, Christine Morlighem, Mathieu De Santis, Laura Silvano, Alessandro Colleoni, Florence Sasgen, Ingo Banwell, Alison F. van den Broeke, Michiel R. DeConto, Robert De Rydt, Jan Goelzer, Heiko Gossart, Alexandra Gudmundsson, G. Hilmar Lindbäck, Katrin Miles, Bertie Mottram, Ruth Pattyn, Frank Reese, Ronja Rignot, Eric Srivastava, Aakriti Sun, Sainan Toller, Justin Tuckett, Peter A. Ultee, Lizz |
author_sort |
Hanna, Edward |
title |
Short- and long-term variability of the Antarctic and Greenland ice sheets |
title_short |
Short- and long-term variability of the Antarctic and Greenland ice sheets |
title_full |
Short- and long-term variability of the Antarctic and Greenland ice sheets |
title_fullStr |
Short- and long-term variability of the Antarctic and Greenland ice sheets |
title_full_unstemmed |
Short- and long-term variability of the Antarctic and Greenland ice sheets |
title_sort |
short- and long-term variability of the antarctic and greenland ice sheets |
publishDate |
2024 |
url |
https://dspace.library.uu.nl/handle/1874/438395 |
genre |
Antarc* Antarctic Greenland Ice Sheet Ice Shelves |
genre_facet |
Antarc* Antarctic Greenland Ice Sheet Ice Shelves |
op_relation |
2662-138X https://dspace.library.uu.nl/handle/1874/438395 |
op_rights |
info:eu-repo/semantics/EmbargoedAccess |
_version_ |
1799470583304421376 |