Two wind-driven modes of winter sea ice variability in the Barents Sea
The interannual variability of the winter sea ice area in the Barents Sea is investigated using SMMR-SSM/I data and a coupled ocean–sea ice model over the period 1979–2012. Our analysis reveals that the sea ice area in the northern and eastern parts of the Barents Sea do not covary. This contrast in...
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ftzenodo:oai:zenodo.org:32857 2024-09-15T17:57:39+00:00 Two wind-driven modes of winter sea ice variability in the Barents Sea Christophe Herbaut Marie-Noëlle Houssais Sally Close Anne-Cécile Blaizot 2015-10-22 https://doi.org/10.1016/j.dsr.2015.10.005 unknown Zenodo https://zenodo.org/communities/naclim https://zenodo.org/communities/eu https://doi.org/10.1016/j.dsr.2015.10.005 oai:zenodo.org:32857 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Deep Sea Research Part I: Oceanographic Research Papers, Volume 106( December 2015), Pages 97–115, (2015-10-22) Sea ice Barents Sea Atlantic Water Interannual variability info:eu-repo/semantics/article 2015 ftzenodo https://doi.org/10.1016/j.dsr.2015.10.005 2024-07-26T17:57:46Z The interannual variability of the winter sea ice area in the Barents Sea is investigated using SMMR-SSM/I data and a coupled ocean–sea ice model over the period 1979–2012. Our analysis reveals that the sea ice area in the northern and eastern parts of the Barents Sea do not covary. This contrast in behavior allows us to associate two distinct modes of variability with these two regions, with the variability of the overall Barents Sea ice cover being predominantly captured by the northern mode. Both modes show a dominant, near in-phase response to the surface wind, both being associated with different spatial patterns. The northern mode emerges in response to northwesterly wind anomalies which favor the export of ice and surface polar water from the Arctic between Svalbard and Franz Josef Land. Atlantic Water temperature anomalies, formed concomitantly with northerly wind anomalies in the vicinity of the Barents Sea Opening, also influence the northern mode in the following winter. These temperature anomalies are linked to local convergence of the oceanic heat transport. The delayed influence of the ocean on the sea ice is found primarily in the northeastern Barents Sea and occurs through the re-emergence of the Atlantic water temperature anomalies at the surface in the following fall and winter. An ocean-to-atmosphere feedback initiated by October SST anomalies in the central Barents Sea is further identified. This feedback is hypothesized to enhance the sea ice response in the northern Barents Sea by promoting the formation of meridional wind anomalies. In contrast, the eastern mode of variability of the Barents Sea ice mainly responds to wind anomalies with a strong zonal component, and is less influenced by the Atlantic Water temperature variability than the northern mode. While our results clearly highlight a role of the ocean in the Barents Sea ice variability, this role appears to be more spatially restricted following the sudden northward retreat of the ice margin in 2004. In particular, the sudden drop ... Article in Journal/Newspaper Barents Sea Franz Josef Land Sea ice Svalbard Zenodo Deep Sea Research Part I: Oceanographic Research Papers 106 97 115 |
institution |
Open Polar |
collection |
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op_collection_id |
ftzenodo |
language |
unknown |
topic |
Sea ice Barents Sea Atlantic Water Interannual variability |
spellingShingle |
Sea ice Barents Sea Atlantic Water Interannual variability Christophe Herbaut Marie-Noëlle Houssais Sally Close Anne-Cécile Blaizot Two wind-driven modes of winter sea ice variability in the Barents Sea |
topic_facet |
Sea ice Barents Sea Atlantic Water Interannual variability |
description |
The interannual variability of the winter sea ice area in the Barents Sea is investigated using SMMR-SSM/I data and a coupled ocean–sea ice model over the period 1979–2012. Our analysis reveals that the sea ice area in the northern and eastern parts of the Barents Sea do not covary. This contrast in behavior allows us to associate two distinct modes of variability with these two regions, with the variability of the overall Barents Sea ice cover being predominantly captured by the northern mode. Both modes show a dominant, near in-phase response to the surface wind, both being associated with different spatial patterns. The northern mode emerges in response to northwesterly wind anomalies which favor the export of ice and surface polar water from the Arctic between Svalbard and Franz Josef Land. Atlantic Water temperature anomalies, formed concomitantly with northerly wind anomalies in the vicinity of the Barents Sea Opening, also influence the northern mode in the following winter. These temperature anomalies are linked to local convergence of the oceanic heat transport. The delayed influence of the ocean on the sea ice is found primarily in the northeastern Barents Sea and occurs through the re-emergence of the Atlantic water temperature anomalies at the surface in the following fall and winter. An ocean-to-atmosphere feedback initiated by October SST anomalies in the central Barents Sea is further identified. This feedback is hypothesized to enhance the sea ice response in the northern Barents Sea by promoting the formation of meridional wind anomalies. In contrast, the eastern mode of variability of the Barents Sea ice mainly responds to wind anomalies with a strong zonal component, and is less influenced by the Atlantic Water temperature variability than the northern mode. While our results clearly highlight a role of the ocean in the Barents Sea ice variability, this role appears to be more spatially restricted following the sudden northward retreat of the ice margin in 2004. In particular, the sudden drop ... |
format |
Article in Journal/Newspaper |
author |
Christophe Herbaut Marie-Noëlle Houssais Sally Close Anne-Cécile Blaizot |
author_facet |
Christophe Herbaut Marie-Noëlle Houssais Sally Close Anne-Cécile Blaizot |
author_sort |
Christophe Herbaut |
title |
Two wind-driven modes of winter sea ice variability in the Barents Sea |
title_short |
Two wind-driven modes of winter sea ice variability in the Barents Sea |
title_full |
Two wind-driven modes of winter sea ice variability in the Barents Sea |
title_fullStr |
Two wind-driven modes of winter sea ice variability in the Barents Sea |
title_full_unstemmed |
Two wind-driven modes of winter sea ice variability in the Barents Sea |
title_sort |
two wind-driven modes of winter sea ice variability in the barents sea |
publisher |
Zenodo |
publishDate |
2015 |
url |
https://doi.org/10.1016/j.dsr.2015.10.005 |
genre |
Barents Sea Franz Josef Land Sea ice Svalbard |
genre_facet |
Barents Sea Franz Josef Land Sea ice Svalbard |
op_source |
Deep Sea Research Part I: Oceanographic Research Papers, Volume 106( December 2015), Pages 97–115, (2015-10-22) |
op_relation |
https://zenodo.org/communities/naclim https://zenodo.org/communities/eu https://doi.org/10.1016/j.dsr.2015.10.005 oai:zenodo.org:32857 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.1016/j.dsr.2015.10.005 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
106 |
container_start_page |
97 |
op_container_end_page |
115 |
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1810433793017774080 |