Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation
Abstract Floating ice shelves are the Achilles’ heel of the Antarctic Ice Sheet. They limit Antarctica’s contribution to global sea level rise, yet they can be rapidly melted from beneath by a warming ocean. At Filchner-Ronne Ice Shelf, a decline in sea ice formation may increase basal melt rates an...
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2021
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Online Access: | http://dx.doi.org/10.1038/s41467-021-23131-x http://www.nature.com/articles/s41467-021-23131-x.pdf http://www.nature.com/articles/s41467-021-23131-x |
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crspringernat:10.1038/s41467-021-23131-x 2023-05-15T13:24:04+02:00 Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation Hattermann, Tore Nicholls, Keith W. Hellmer, Hartmut H. Davis, Peter E. D. Janout, Markus A. Østerhus, Svein Schlosser, Elisabeth Rohardt, Gerd Kanzow, Torsten Alfred Wegener Institute strategic grant 2021 http://dx.doi.org/10.1038/s41467-021-23131-x http://www.nature.com/articles/s41467-021-23131-x.pdf http://www.nature.com/articles/s41467-021-23131-x en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 12, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2021 crspringernat https://doi.org/10.1038/s41467-021-23131-x 2022-01-04T15:10:50Z Abstract Floating ice shelves are the Achilles’ heel of the Antarctic Ice Sheet. They limit Antarctica’s contribution to global sea level rise, yet they can be rapidly melted from beneath by a warming ocean. At Filchner-Ronne Ice Shelf, a decline in sea ice formation may increase basal melt rates and accelerate marine ice sheet mass loss within this century. However, the understanding of this tipping-point behavior largely relies on numerical models. Our new multi-annual observations from five hot-water drilled boreholes through Filchner-Ronne Ice Shelf show that since 2015 there has been an intensification of the density-driven ice shelf cavity-wide circulation in response to reinforced wind-driven sea ice formation in the Ronne polynya. Enhanced southerly winds over Ronne Ice Shelf coincide with westward displacements of the Amundsen Sea Low position, connecting the cavity circulation with changes in large-scale atmospheric circulation patterns as a new aspect of the atmosphere-ocean-ice shelf system. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice Springer Nature (via Crossref) Achilles Heel ENVELOPE(-63.596,-63.596,-64.500,-64.500) Amundsen Sea Antarctic Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) The Antarctic Nature Communications 12 1 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Hattermann, Tore Nicholls, Keith W. Hellmer, Hartmut H. Davis, Peter E. D. Janout, Markus A. Østerhus, Svein Schlosser, Elisabeth Rohardt, Gerd Kanzow, Torsten Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation |
topic_facet |
General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract Floating ice shelves are the Achilles’ heel of the Antarctic Ice Sheet. They limit Antarctica’s contribution to global sea level rise, yet they can be rapidly melted from beneath by a warming ocean. At Filchner-Ronne Ice Shelf, a decline in sea ice formation may increase basal melt rates and accelerate marine ice sheet mass loss within this century. However, the understanding of this tipping-point behavior largely relies on numerical models. Our new multi-annual observations from five hot-water drilled boreholes through Filchner-Ronne Ice Shelf show that since 2015 there has been an intensification of the density-driven ice shelf cavity-wide circulation in response to reinforced wind-driven sea ice formation in the Ronne polynya. Enhanced southerly winds over Ronne Ice Shelf coincide with westward displacements of the Amundsen Sea Low position, connecting the cavity circulation with changes in large-scale atmospheric circulation patterns as a new aspect of the atmosphere-ocean-ice shelf system. |
author2 |
Alfred Wegener Institute strategic grant |
format |
Article in Journal/Newspaper |
author |
Hattermann, Tore Nicholls, Keith W. Hellmer, Hartmut H. Davis, Peter E. D. Janout, Markus A. Østerhus, Svein Schlosser, Elisabeth Rohardt, Gerd Kanzow, Torsten |
author_facet |
Hattermann, Tore Nicholls, Keith W. Hellmer, Hartmut H. Davis, Peter E. D. Janout, Markus A. Østerhus, Svein Schlosser, Elisabeth Rohardt, Gerd Kanzow, Torsten |
author_sort |
Hattermann, Tore |
title |
Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation |
title_short |
Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation |
title_full |
Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation |
title_fullStr |
Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation |
title_full_unstemmed |
Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation |
title_sort |
observed interannual changes beneath filchner-ronne ice shelf linked to large-scale atmospheric circulation |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s41467-021-23131-x http://www.nature.com/articles/s41467-021-23131-x.pdf http://www.nature.com/articles/s41467-021-23131-x |
long_lat |
ENVELOPE(-63.596,-63.596,-64.500,-64.500) ENVELOPE(-61.000,-61.000,-78.500,-78.500) |
geographic |
Achilles Heel Amundsen Sea Antarctic Ronne Ice Shelf The Antarctic |
geographic_facet |
Achilles Heel Amundsen Sea Antarctic Ronne Ice Shelf The Antarctic |
genre |
Amundsen Sea Antarc* Antarctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice |
genre_facet |
Amundsen Sea Antarc* Antarctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice |
op_source |
Nature Communications volume 12, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-021-23131-x |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
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1766377239837933568 |