Arctic/Atlantic exchanges via the Subpolar Gyre
In the present study we investigate the decadal variability in the strength and shape of the Subpolar Gyre (SPG) in a 600-year pre-industrial simulation using the Bergen Climate Model. The atmospheric influence on the SPG strength is reflected in the variability of Labrador Sea Water (LSW), which is...
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American Meteorological Society
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Online Access: | https://hdl.handle.net/1956/5279 https://doi.org/10.1175/jcli-d-11-00085.1 |
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ftunivbergen:oai:bora.uib.no:1956/5279 2023-05-15T14:24:05+02:00 Arctic/Atlantic exchanges via the Subpolar Gyre Langehaug, Helene Reinertsen Medhaug, Iselin Eldevik, Tor Otterå, Odd Helge 2012 application/pdf https://hdl.handle.net/1956/5279 https://doi.org/10.1175/jcli-d-11-00085.1 eng eng American Meteorological Society Circulation and transformation of Atlantic and Arctic water masses in climate models urn:issn:0894-8755 https://hdl.handle.net/1956/5279 https://doi.org/10.1175/jcli-d-11-00085.1 cristin:895415 Copyright 2012 American Meteorological Society Journal of Climate 25 7 2421-2439 Subpolar gyre Bergen Climate Model VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 Peer reviewed Journal article 2012 ftunivbergen https://doi.org/10.1175/jcli-d-11-00085.1 2023-03-14T17:40:50Z In the present study we investigate the decadal variability in the strength and shape of the Subpolar Gyre (SPG) in a 600-year pre-industrial simulation using the Bergen Climate Model. The atmospheric influence on the SPG strength is reflected in the variability of Labrador Sea Water (LSW), which is largely controlled by the North Atlantic Oscillation, the first mode of the North Atlantic atmospheric variability. A combination of the amount of LSW, the overflow from the Nordic Seas, and the second mode of atmospheric variability, the East Atlantic Pattern, explains 44% of the modeled decadal variability in the SPG strength. A prior increase in these components leads to an intensified SPG in the western subpolar region. Typically, an increase of one standard deviation (std) of the overflow (1 std = 0.2 Sv, 1 Sv = 106 m−3 s−1) corresponds to an intensification of about one half std of the SPG strength (1 std = 2 Sv). A similar response is found for an increase of one std in the amount of LSW, and simultaneously the strength of the North Atlantic Current increases by one half std (1 std = 0.9 Sv). publishedVersion Article in Journal/Newspaper Arctic Arctic Labrador Sea Nordic Seas north atlantic current North Atlantic North Atlantic oscillation University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Bergen Journal of Climate 25 7 2421 2439 |
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Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
Subpolar gyre Bergen Climate Model VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 |
spellingShingle |
Subpolar gyre Bergen Climate Model VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 Langehaug, Helene Reinertsen Medhaug, Iselin Eldevik, Tor Otterå, Odd Helge Arctic/Atlantic exchanges via the Subpolar Gyre |
topic_facet |
Subpolar gyre Bergen Climate Model VDP::Mathematics and natural science: 400::Geosciences: 450::Oceanography: 452 |
description |
In the present study we investigate the decadal variability in the strength and shape of the Subpolar Gyre (SPG) in a 600-year pre-industrial simulation using the Bergen Climate Model. The atmospheric influence on the SPG strength is reflected in the variability of Labrador Sea Water (LSW), which is largely controlled by the North Atlantic Oscillation, the first mode of the North Atlantic atmospheric variability. A combination of the amount of LSW, the overflow from the Nordic Seas, and the second mode of atmospheric variability, the East Atlantic Pattern, explains 44% of the modeled decadal variability in the SPG strength. A prior increase in these components leads to an intensified SPG in the western subpolar region. Typically, an increase of one standard deviation (std) of the overflow (1 std = 0.2 Sv, 1 Sv = 106 m−3 s−1) corresponds to an intensification of about one half std of the SPG strength (1 std = 2 Sv). A similar response is found for an increase of one std in the amount of LSW, and simultaneously the strength of the North Atlantic Current increases by one half std (1 std = 0.9 Sv). publishedVersion |
format |
Article in Journal/Newspaper |
author |
Langehaug, Helene Reinertsen Medhaug, Iselin Eldevik, Tor Otterå, Odd Helge |
author_facet |
Langehaug, Helene Reinertsen Medhaug, Iselin Eldevik, Tor Otterå, Odd Helge |
author_sort |
Langehaug, Helene Reinertsen |
title |
Arctic/Atlantic exchanges via the Subpolar Gyre |
title_short |
Arctic/Atlantic exchanges via the Subpolar Gyre |
title_full |
Arctic/Atlantic exchanges via the Subpolar Gyre |
title_fullStr |
Arctic/Atlantic exchanges via the Subpolar Gyre |
title_full_unstemmed |
Arctic/Atlantic exchanges via the Subpolar Gyre |
title_sort |
arctic/atlantic exchanges via the subpolar gyre |
publisher |
American Meteorological Society |
publishDate |
2012 |
url |
https://hdl.handle.net/1956/5279 https://doi.org/10.1175/jcli-d-11-00085.1 |
geographic |
Arctic Bergen |
geographic_facet |
Arctic Bergen |
genre |
Arctic Arctic Labrador Sea Nordic Seas north atlantic current North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Arctic Labrador Sea Nordic Seas north atlantic current North Atlantic North Atlantic oscillation |
op_source |
Journal of Climate 25 7 2421-2439 |
op_relation |
Circulation and transformation of Atlantic and Arctic water masses in climate models urn:issn:0894-8755 https://hdl.handle.net/1956/5279 https://doi.org/10.1175/jcli-d-11-00085.1 cristin:895415 |
op_rights |
Copyright 2012 American Meteorological Society |
op_doi |
https://doi.org/10.1175/jcli-d-11-00085.1 |
container_title |
Journal of Climate |
container_volume |
25 |
container_issue |
7 |
container_start_page |
2421 |
op_container_end_page |
2439 |
_version_ |
1766296552054194176 |