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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ftawi:oai:epic.awi.de:41709 2024-09-15T18:07:00+00:00 Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation Ionita, Monica Scholz, Patrick Lohmann, Gerrit Dima, Mihai Prange, Matthias 2016-09-13 application/pdf https://epic.awi.de/id/eprint/41709/ https://epic.awi.de/id/eprint/41709/1/ionita-srep.pdf http://www.nature.com/articles/srep32881 https://hdl.handle.net/10013/epic.48583 https://hdl.handle.net/10013/epic.48583.d001 unknown https://epic.awi.de/id/eprint/41709/1/ionita-srep.pdf https://hdl.handle.net/10013/epic.48583.d001 Ionita, M. orcid:0000-0001-8240-4380 , Scholz, P. orcid:0000-0003-2692-7624 , Lohmann, G. orcid:0000-0003-2089-733X , Dima, M. and Prange, M. (2016) Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation , Scientific Reports, 6 (32881) . doi:10.1038/srep32881 <https://doi.org/10.1038/srep32881> , hdl:10013/epic.48583 EPIC3Scientific Reports, 6(32881) Article isiRev 2016 ftawi https://doi.org/10.1038/srep32881 2024-06-24T04:15:36Z 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. Article in Journal/Newspaper Fram Strait Greenland Labrador Sea North Atlantic Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Scientific Reports 6 1 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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 |
Article in Journal/Newspaper |
author |
Ionita, Monica Scholz, Patrick Lohmann, Gerrit Dima, Mihai Prange, Matthias |
spellingShingle |
Ionita, Monica Scholz, Patrick Lohmann, Gerrit Dima, Mihai Prange, Matthias Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation |
author_facet |
Ionita, Monica Scholz, Patrick Lohmann, Gerrit Dima, Mihai Prange, Matthias |
author_sort |
Ionita, Monica |
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 |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41709/ https://epic.awi.de/id/eprint/41709/1/ionita-srep.pdf http://www.nature.com/articles/srep32881 https://hdl.handle.net/10013/epic.48583 https://hdl.handle.net/10013/epic.48583.d001 |
genre |
Fram Strait Greenland Labrador Sea North Atlantic Sea ice |
genre_facet |
Fram Strait Greenland Labrador Sea North Atlantic Sea ice |
op_source |
EPIC3Scientific Reports, 6(32881) |
op_relation |
https://epic.awi.de/id/eprint/41709/1/ionita-srep.pdf https://hdl.handle.net/10013/epic.48583.d001 Ionita, M. orcid:0000-0001-8240-4380 , Scholz, P. orcid:0000-0003-2692-7624 , Lohmann, G. orcid:0000-0003-2089-733X , Dima, M. and Prange, M. (2016) Linkages between atmospheric blocking, sea ice export through Fram Strait and the Atlantic Meridional Overturning Circulation , Scientific Reports, 6 (32881) . doi:10.1038/srep32881 <https://doi.org/10.1038/srep32881> , hdl:10013/epic.48583 |
op_doi |
https://doi.org/10.1038/srep32881 |
container_title |
Scientific Reports |
container_volume |
6 |
container_issue |
1 |
_version_ |
1810444357226987520 |