Observed interannual changes beneath Filchner-Ronne Ice Shelf linked to large-scale atmospheric circulation
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 acceler...
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ftpubmed:oai:pubmedcentral.nih.gov:8138005 2023-05-15T13:24:02+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 2021-05-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8138005/ http://www.ncbi.nlm.nih.gov/pubmed/34016971 https://doi.org/10.1038/s41467-021-23131-x en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8138005/ http://www.ncbi.nlm.nih.gov/pubmed/34016971 http://dx.doi.org/10.1038/s41467-021-23131-x © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Nat Commun Article Text 2021 ftpubmed https://doi.org/10.1038/s41467-021-23131-x 2021-06-06T00:38:03Z 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. Text Amundsen Sea Antarc* Antarctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice PubMed Central (PMC) 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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Article 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 |
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Article |
description |
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. |
format |
Text |
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 |
Nature Publishing Group UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8138005/ http://www.ncbi.nlm.nih.gov/pubmed/34016971 https://doi.org/10.1038/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 |
Nat Commun |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8138005/ http://www.ncbi.nlm.nih.gov/pubmed/34016971 http://dx.doi.org/10.1038/s41467-021-23131-x |
op_rights |
© The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://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 |
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12 |
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1 |
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1766377072902537216 |