Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation
As a key persistent component of the atmospheric dynamics, the North Atlantic blocking activity has been linked to extreme climatic phenomena in the European sector. It has also been linked to Atlantic multidecadal ocean variability, but its potential links to rapid oceanic changes have not been inv...
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ftpubmed:oai:pubmedcentral.nih.gov:5020648 2023-05-15T14:57:06+02:00 Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation Ionita, M. Scholz, P. Lohmann, G. Dima, M. Prange, M. 2016-09-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020648/ http://www.ncbi.nlm.nih.gov/pubmed/27619955 https://doi.org/10.1038/srep32881 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020648/ http://www.ncbi.nlm.nih.gov/pubmed/27619955 http://dx.doi.org/10.1038/srep32881 Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep32881 2016-09-25T00:09:54Z As a key persistent component of the atmospheric dynamics, the North Atlantic blocking activity has been linked to extreme climatic phenomena in the European sector. It has also been linked to Atlantic multidecadal ocean variability, but its potential links to rapid oceanic changes have not been investigated. Using a global ocean-sea ice model forced with atmospheric reanalysis data, here it is shown that the 1962–1966 period of enhanced blocking activity over Greenland resulted in anomalous sea ice accumulation in the Arctic and ended with a sea ice flush from the Arctic into the North Atlantic Ocean through Fram Strait. This event induced a significant decrease of Labrador Sea water surface salinity and an abrupt weakening of the Atlantic Meridional Overturning Circulation (AMOC) during the 1970s. These results have implications for the prediction of rapid AMOC changes and indicate that an important part of the atmosphere-ocean dynamics at mid- and high latitudes requires a proper representation of the Fram Strait sea ice transport and of the synoptic scale variability such as atmospheric blocking, which is a challenge for current coupled climate models. Text Arctic Fram Strait Greenland Labrador Sea North Atlantic Sea ice PubMed Central (PMC) Arctic Greenland Scientific Reports 6 1 |
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Article Ionita, M. Scholz, P. Lohmann, G. Dima, M. Prange, M. Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation |
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Article |
description |
As a key persistent component of the atmospheric dynamics, the North Atlantic blocking activity has been linked to extreme climatic phenomena in the European sector. It has also been linked to Atlantic multidecadal ocean variability, but its potential links to rapid oceanic changes have not been investigated. Using a global ocean-sea ice model forced with atmospheric reanalysis data, here it is shown that the 1962–1966 period of enhanced blocking activity over Greenland resulted in anomalous sea ice accumulation in the Arctic and ended with a sea ice flush from the Arctic into the North Atlantic Ocean through Fram Strait. This event induced a significant decrease of Labrador Sea water surface salinity and an abrupt weakening of the Atlantic Meridional Overturning Circulation (AMOC) during the 1970s. These results have implications for the prediction of rapid AMOC changes and indicate that an important part of the atmosphere-ocean dynamics at mid- and high latitudes requires a proper representation of the Fram Strait sea ice transport and of the synoptic scale variability such as atmospheric blocking, which is a challenge for current coupled climate models. |
format |
Text |
author |
Ionita, M. Scholz, P. Lohmann, G. Dima, M. Prange, M. |
author_facet |
Ionita, M. Scholz, P. Lohmann, G. Dima, M. Prange, M. |
author_sort |
Ionita, M. |
title |
Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation |
title_short |
Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation |
title_full |
Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation |
title_fullStr |
Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation |
title_full_unstemmed |
Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation |
title_sort |
linkages between atmospheric blocking, sea ice export through fram strait and the atlantic meridional overturning circulation |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020648/ http://www.ncbi.nlm.nih.gov/pubmed/27619955 https://doi.org/10.1038/srep32881 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Fram Strait Greenland Labrador Sea North Atlantic Sea ice |
genre_facet |
Arctic Fram Strait Greenland Labrador Sea North Atlantic Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020648/ http://www.ncbi.nlm.nih.gov/pubmed/27619955 http://dx.doi.org/10.1038/srep32881 |
op_rights |
Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
op_doi |
https://doi.org/10.1038/srep32881 |
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Scientific Reports |
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6 |
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1 |
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1766329196994363392 |