High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry
Antarctica’s contribution to global mean sea level rise has been driven by an increase in ice discharge into the oceans. The rate of change and the mechanisms that drive variability in ice discharge are therefore important to consider in the context of projected future warming. Here, we report obser...
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Online Access: | https://nrl.northumbria.ac.uk/id/eprint/49462/ https://doi.org/10.1038/s41598-022-13517-2 https://nrl.northumbria.ac.uk/id/eprint/49462/1/s41598-022-13517-2.pdf https://nrl.northumbria.ac.uk/id/eprint/49462/2/41598_2022_13517_MOESM1_ESM.pdf |
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ftunivnorthumb:oai:nrl.northumbria.ac.uk:49462 2023-05-15T13:44:52+02:00 High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry Miles, Bertie W. J. Stokes, Chris R. Jamieson, Stewart S. R. Jordan, Jim Gudmundsson, Hilmar Jenkins, Adrian 2022-06-29 text https://nrl.northumbria.ac.uk/id/eprint/49462/ https://doi.org/10.1038/s41598-022-13517-2 https://nrl.northumbria.ac.uk/id/eprint/49462/1/s41598-022-13517-2.pdf https://nrl.northumbria.ac.uk/id/eprint/49462/2/41598_2022_13517_MOESM1_ESM.pdf en eng Nature Publishing https://nrl.northumbria.ac.uk/id/eprint/49462/1/s41598-022-13517-2.pdf https://nrl.northumbria.ac.uk/id/eprint/49462/2/41598_2022_13517_MOESM1_ESM.pdf Miles, Bertie W. J., Stokes, Chris R., Jamieson, Stewart S. R., Jordan, Jim, Gudmundsson, Hilmar and Jenkins, Adrian (2022) High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry. Scientific Reports, 12 (1). p. 10968. ISSN 2045-2322 cc_by_4_0 CC-BY F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2022 ftunivnorthumb https://doi.org/10.1038/s41598-022-13517-2 2022-09-25T06:15:47Z Antarctica’s contribution to global mean sea level rise has been driven by an increase in ice discharge into the oceans. The rate of change and the mechanisms that drive variability in ice discharge are therefore important to consider in the context of projected future warming. Here, we report observations of both decadal trends and inter-annual variability in ice discharge across the Antarctic Ice Sheet at a variety of spatial scales that range from large drainage basins to individual outlet glacier catchments. Overall, we find a 37 ± 11 Gt year−1 increase in discharge between 1999 and 2010, but a much smaller increase of 4 ± 8 Gt year−1 between 2010 and 2018. Furthermore, comparisons reveal that neighbouring outlet glaciers can behave synchronously, but others show opposing trends, despite their close proximity. We link this spatial and temporal variability to changes in ice shelf buttressing and the modulating effect of local glacier geometry. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Ice Shelf Northumbria University, Newcastle: Northumbria Research Link (NRL) Antarctic The Antarctic Scientific Reports 12 1 |
institution |
Open Polar |
collection |
Northumbria University, Newcastle: Northumbria Research Link (NRL) |
op_collection_id |
ftunivnorthumb |
language |
English |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Miles, Bertie W. J. Stokes, Chris R. Jamieson, Stewart S. R. Jordan, Jim Gudmundsson, Hilmar Jenkins, Adrian High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
Antarctica’s contribution to global mean sea level rise has been driven by an increase in ice discharge into the oceans. The rate of change and the mechanisms that drive variability in ice discharge are therefore important to consider in the context of projected future warming. Here, we report observations of both decadal trends and inter-annual variability in ice discharge across the Antarctic Ice Sheet at a variety of spatial scales that range from large drainage basins to individual outlet glacier catchments. Overall, we find a 37 ± 11 Gt year−1 increase in discharge between 1999 and 2010, but a much smaller increase of 4 ± 8 Gt year−1 between 2010 and 2018. Furthermore, comparisons reveal that neighbouring outlet glaciers can behave synchronously, but others show opposing trends, despite their close proximity. We link this spatial and temporal variability to changes in ice shelf buttressing and the modulating effect of local glacier geometry. |
format |
Article in Journal/Newspaper |
author |
Miles, Bertie W. J. Stokes, Chris R. Jamieson, Stewart S. R. Jordan, Jim Gudmundsson, Hilmar Jenkins, Adrian |
author_facet |
Miles, Bertie W. J. Stokes, Chris R. Jamieson, Stewart S. R. Jordan, Jim Gudmundsson, Hilmar Jenkins, Adrian |
author_sort |
Miles, Bertie W. J. |
title |
High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry |
title_short |
High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry |
title_full |
High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry |
title_fullStr |
High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry |
title_full_unstemmed |
High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry |
title_sort |
high spatial and temporal variability in antarctic ice discharge linked to ice shelf buttressing and bed geometry |
publisher |
Nature Publishing |
publishDate |
2022 |
url |
https://nrl.northumbria.ac.uk/id/eprint/49462/ https://doi.org/10.1038/s41598-022-13517-2 https://nrl.northumbria.ac.uk/id/eprint/49462/1/s41598-022-13517-2.pdf https://nrl.northumbria.ac.uk/id/eprint/49462/2/41598_2022_13517_MOESM1_ESM.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf |
op_relation |
https://nrl.northumbria.ac.uk/id/eprint/49462/1/s41598-022-13517-2.pdf https://nrl.northumbria.ac.uk/id/eprint/49462/2/41598_2022_13517_MOESM1_ESM.pdf Miles, Bertie W. J., Stokes, Chris R., Jamieson, Stewart S. R., Jordan, Jim, Gudmundsson, Hilmar and Jenkins, Adrian (2022) High spatial and temporal variability in Antarctic ice discharge linked to ice shelf buttressing and bed geometry. Scientific Reports, 12 (1). p. 10968. ISSN 2045-2322 |
op_rights |
cc_by_4_0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-022-13517-2 |
container_title |
Scientific Reports |
container_volume |
12 |
container_issue |
1 |
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1766207954016534528 |