Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport
Impacts of extreme Barents Sea air-sea exchanges are examined using the HadCM3 coupled ocean-atmosphere model. Variability in the Barents Sea winter air-sea density flux is found to be a potentially significant factor in determining changes in the southward transport of dense water through Fram Stra...
Published in: | Journal of Geophysical Research: Oceans |
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Language: | English |
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2014
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Online Access: | http://nora.nerc.ac.uk/id/eprint/504573/ https://nora.nerc.ac.uk/id/eprint/504573/1/jgrc20571_Moat.pdf |
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ftnerc:oai:nora.nerc.ac.uk:504573 2023-05-15T15:38:19+02:00 Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport Moat, B.I. Josey, S. Sinha, B. 2014-02-12 text http://nora.nerc.ac.uk/id/eprint/504573/ https://nora.nerc.ac.uk/id/eprint/504573/1/jgrc20571_Moat.pdf en eng https://nora.nerc.ac.uk/id/eprint/504573/1/jgrc20571_Moat.pdf Moat, B.I. orcid:0000-0001-8676-7779 Josey, S. orcid:0000-0002-1683-8831 Sinha, B. 2014 Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport. Journal of Geophysical Research, 119 (2). 1009-1021. https://doi.org/10.1002/2013JC009220 <https://doi.org/10.1002/2013JC009220> Publication - Article PeerReviewed 2014 ftnerc https://doi.org/10.1002/2013JC009220 2023-02-04T19:38:31Z Impacts of extreme Barents Sea air-sea exchanges are examined using the HadCM3 coupled ocean-atmosphere model. Variability in the Barents Sea winter air-sea density flux is found to be a potentially significant factor in determining changes in the southward transport of dense water through Fram Strait. The density flux variability is primarily driven by the thermal term, FT, due to heat loss to the atmosphere. The other two terms (haline flux and ice formation) play a relatively minor role. The difference in ocean circulation between winters with extreme strong and weak Barents Sea surface density flux anomalies is analysed. This reveals an increase in strong winters of both the north-westwards intermediate depth flow out of the basin and the east-west deep flows north of Spitsbergen and south through the Fram Strait. A linear fit yields a Fram Strait southward transport increase of 1.22 Sv for an increase in FT of 1x10-6 kg m-2 s-1. For the ten strongest Barents Sea surface density flux winters, the Fram Strait winter southward transport increases by 2.4 Sv. This compares with a reduction of 1.0 Sv for the corresponding weakest winters. Furthermore, the properties of the southwards flowing water are modified in strong density flux winters. In such winters, the Fram Strait water below 250 m is colder by up to 0.5 �C and fresher by 0.05 than the climatological winter mean. Article in Journal/Newspaper Barents Sea Fram Strait Spitsbergen Natural Environment Research Council: NERC Open Research Archive Barents Sea Journal of Geophysical Research: Oceans 119 2 1009 1021 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
Impacts of extreme Barents Sea air-sea exchanges are examined using the HadCM3 coupled ocean-atmosphere model. Variability in the Barents Sea winter air-sea density flux is found to be a potentially significant factor in determining changes in the southward transport of dense water through Fram Strait. The density flux variability is primarily driven by the thermal term, FT, due to heat loss to the atmosphere. The other two terms (haline flux and ice formation) play a relatively minor role. The difference in ocean circulation between winters with extreme strong and weak Barents Sea surface density flux anomalies is analysed. This reveals an increase in strong winters of both the north-westwards intermediate depth flow out of the basin and the east-west deep flows north of Spitsbergen and south through the Fram Strait. A linear fit yields a Fram Strait southward transport increase of 1.22 Sv for an increase in FT of 1x10-6 kg m-2 s-1. For the ten strongest Barents Sea surface density flux winters, the Fram Strait winter southward transport increases by 2.4 Sv. This compares with a reduction of 1.0 Sv for the corresponding weakest winters. Furthermore, the properties of the southwards flowing water are modified in strong density flux winters. In such winters, the Fram Strait water below 250 m is colder by up to 0.5 �C and fresher by 0.05 than the climatological winter mean. |
format |
Article in Journal/Newspaper |
author |
Moat, B.I. Josey, S. Sinha, B. |
spellingShingle |
Moat, B.I. Josey, S. Sinha, B. Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport |
author_facet |
Moat, B.I. Josey, S. Sinha, B. |
author_sort |
Moat, B.I. |
title |
Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport |
title_short |
Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport |
title_full |
Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport |
title_fullStr |
Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport |
title_full_unstemmed |
Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport |
title_sort |
impact of barents sea winter air-sea exchanges on fram strait dense water transport |
publishDate |
2014 |
url |
http://nora.nerc.ac.uk/id/eprint/504573/ https://nora.nerc.ac.uk/id/eprint/504573/1/jgrc20571_Moat.pdf |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Fram Strait Spitsbergen |
genre_facet |
Barents Sea Fram Strait Spitsbergen |
op_relation |
https://nora.nerc.ac.uk/id/eprint/504573/1/jgrc20571_Moat.pdf Moat, B.I. orcid:0000-0001-8676-7779 Josey, S. orcid:0000-0002-1683-8831 Sinha, B. 2014 Impact of Barents Sea winter air-sea exchanges on Fram Strait dense water transport. Journal of Geophysical Research, 119 (2). 1009-1021. https://doi.org/10.1002/2013JC009220 <https://doi.org/10.1002/2013JC009220> |
op_doi |
https://doi.org/10.1002/2013JC009220 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
2 |
container_start_page |
1009 |
op_container_end_page |
1021 |
_version_ |
1766369160100577280 |