Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century
Over the past 50 years, warming of the Antarctic Peninsula has been accompanied by accelerating glacier mass loss and the retreat and collapse of ice shelves. A key driver of ice loss is summer melting; however, it is not usually possible to specifically reconstruct the summer conditions that are cr...
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Online Access: | https://epic.awi.de/id/eprint/33840/ https://doi.org/10.1038/NGEO1787 https://hdl.handle.net/10013/epic.42166 |
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ftawi:oai:epic.awi.de:33840 2023-05-15T13:40:26+02:00 Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century Abram, Nerilie J. Mulvaney, Robert Wolff, Eric W. Triest, Jack Kipfstuhl, Sepp Trusel, Luke D. Vimeux, Françoise Fleet, Louise Arrowsmith, Carol 2013 https://epic.awi.de/id/eprint/33840/ https://doi.org/10.1038/NGEO1787 https://hdl.handle.net/10013/epic.42166 unknown Abram, N. J. , Mulvaney, R. , Wolff, E. W. , Triest, J. , Kipfstuhl, S. , Trusel, L. D. , Vimeux, F. , Fleet, L. and Arrowsmith, C. (2013) Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century , Nature Geoscience, 6 (5), pp. 404-411 . doi:10.1038/NGEO1787 <https://doi.org/10.1038/NGEO1787> , hdl:10013/epic.42166 EPIC3Nature Geoscience, 6(5), pp. 404-411, ISSN: 1752-0894 Article isiRev 2013 ftawi https://doi.org/10.1038/NGEO1787 2021-12-24T15:38:56Z Over the past 50 years, warming of the Antarctic Peninsula has been accompanied by accelerating glacier mass loss and the retreat and collapse of ice shelves. A key driver of ice loss is summer melting; however, it is not usually possible to specifically reconstruct the summer conditions that are critical for determining ice melt in Antarctic. Here we reconstruct changes in ice-melt intensity and mean temperature on the northern Antarctic Peninsula since AD 1000 based on the identification of visible melt layers in the James Ross Island ice core and local mean annual temperature estimates from the deuterium content of the ice. During the past millennium, the coolest conditions and lowest melt occurred from about AD 1410 to 1460, when mean temperature was 1:6 �C lower than that of 1981–2000. Since the late 1400s, there has been a nearly tenfold increase in melt intensity from 0.5 to 4.9%. The warming has occurred in progressive phases since about AD 1460, but intensification of melt is nonlinear, and has largely occurred since the mid-twentieth century. Summer melting is now at a level that is unprecedented over the past 1,000 years.We conclude that ice on the Antarctic Peninsula is now particularly susceptible to rapid increases in melting and loss in response to relatively small increases in mean temperature. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula ice core Ice Shelves James Ross Island Ross Island Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Antarctic Peninsula Ross Island The Antarctic Nature Geoscience 6 5 404 411 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Over the past 50 years, warming of the Antarctic Peninsula has been accompanied by accelerating glacier mass loss and the retreat and collapse of ice shelves. A key driver of ice loss is summer melting; however, it is not usually possible to specifically reconstruct the summer conditions that are critical for determining ice melt in Antarctic. Here we reconstruct changes in ice-melt intensity and mean temperature on the northern Antarctic Peninsula since AD 1000 based on the identification of visible melt layers in the James Ross Island ice core and local mean annual temperature estimates from the deuterium content of the ice. During the past millennium, the coolest conditions and lowest melt occurred from about AD 1410 to 1460, when mean temperature was 1:6 �C lower than that of 1981–2000. Since the late 1400s, there has been a nearly tenfold increase in melt intensity from 0.5 to 4.9%. The warming has occurred in progressive phases since about AD 1460, but intensification of melt is nonlinear, and has largely occurred since the mid-twentieth century. Summer melting is now at a level that is unprecedented over the past 1,000 years.We conclude that ice on the Antarctic Peninsula is now particularly susceptible to rapid increases in melting and loss in response to relatively small increases in mean temperature. |
format |
Article in Journal/Newspaper |
author |
Abram, Nerilie J. Mulvaney, Robert Wolff, Eric W. Triest, Jack Kipfstuhl, Sepp Trusel, Luke D. Vimeux, Françoise Fleet, Louise Arrowsmith, Carol |
spellingShingle |
Abram, Nerilie J. Mulvaney, Robert Wolff, Eric W. Triest, Jack Kipfstuhl, Sepp Trusel, Luke D. Vimeux, Françoise Fleet, Louise Arrowsmith, Carol Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century |
author_facet |
Abram, Nerilie J. Mulvaney, Robert Wolff, Eric W. Triest, Jack Kipfstuhl, Sepp Trusel, Luke D. Vimeux, Françoise Fleet, Louise Arrowsmith, Carol |
author_sort |
Abram, Nerilie J. |
title |
Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century |
title_short |
Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century |
title_full |
Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century |
title_fullStr |
Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century |
title_full_unstemmed |
Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century |
title_sort |
acceleration of snow melt in an antarctic peninsula ice core during the twentieth century |
publishDate |
2013 |
url |
https://epic.awi.de/id/eprint/33840/ https://doi.org/10.1038/NGEO1787 https://hdl.handle.net/10013/epic.42166 |
geographic |
Antarctic Antarctic Peninsula Ross Island The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Ross Island The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula ice core Ice Shelves James Ross Island Ross Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula ice core Ice Shelves James Ross Island Ross Island |
op_source |
EPIC3Nature Geoscience, 6(5), pp. 404-411, ISSN: 1752-0894 |
op_relation |
Abram, N. J. , Mulvaney, R. , Wolff, E. W. , Triest, J. , Kipfstuhl, S. , Trusel, L. D. , Vimeux, F. , Fleet, L. and Arrowsmith, C. (2013) Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century , Nature Geoscience, 6 (5), pp. 404-411 . doi:10.1038/NGEO1787 <https://doi.org/10.1038/NGEO1787> , hdl:10013/epic.42166 |
op_doi |
https://doi.org/10.1038/NGEO1787 |
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Nature Geoscience |
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6 |
container_issue |
5 |
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404 |
op_container_end_page |
411 |
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1766133667236675584 |