Rapid response of the Norwegian Atlantic Slope Current to wind forcing
Abstract We explore drivers of variability in the Norwegian Atlantic Slope Current, which carries relatively warm Atlantic Water towards the Barents Sea and Arctic Ocean, using CMEMS satellite altimetry data and TOPAZ4 ocean reanalysis data. Previous studies have pointed to a variety of causes, on a...
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ftoslouniv:oai:www.duo.uio.no:10852/98509 2023-05-15T15:09:38+02:00 Rapid response of the Norwegian Atlantic Slope Current to wind forcing ENEngelskEnglishRapid response of the Norwegian Atlantic Slope Current to wind forcing Brown, Nicola Mauritzen, Cecilie Li, Camille Madonna, Erica Isachsen, Pål Erik Lacasce, Joseph Henry 2022-12-30T17:17:27Z http://hdl.handle.net/10852/98509 https://doi.org/10.1175/JPO-D-22-0014.1 EN eng Brown, Nicola Mauritzen, Cecilie Li, Camille Madonna, Erica Isachsen, Pål Erik Lacasce, Joseph Henry . Rapid response of the Norwegian Atlantic Slope Current to wind forcing. Journal of Physical Oceanography. 2022 http://hdl.handle.net/10852/98509 2098244 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Physical Oceanography&rft.volume=&rft.spage=&rft.date=2022 Journal of Physical Oceanography https://doi.org/10.1175/JPO-D-22-0014.1 0022-3670 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2022 ftoslouniv https://doi.org/10.1175/JPO-D-22-0014.1 2023-04-12T22:37:46Z Abstract We explore drivers of variability in the Norwegian Atlantic Slope Current, which carries relatively warm Atlantic Water towards the Barents Sea and Arctic Ocean, using CMEMS satellite altimetry data and TOPAZ4 ocean reanalysis data. Previous studies have pointed to a variety of causes, on a variety of timescales. We use data with daily resolution to investigate day-to-day changes in ocean transport across three sections crossing the shelf-slope of Norway (Svinøy, Gimsøy and the Barents Sea Opening). The highest (lowest) extremes in transport at all sections develop over two days as a cyclonic (anticyclonic) atmospheric pressure system approaches from the southwest, piling up (extracting) water at the coast of Norway. The actual peak is reached when the pressure system passes the site of measurement, and the transport then relaxes for the next two days as the system continues northward along the coast. Other sources of short-term variability, such as propagating continental shelf waves and baroclinic instability, are unlikely to yield covariability over large separations. Monthly variability in the current can also be explained by passing weather systems since their numbers and intensity vary greatly from month to month. Many studies of longer-term variability, especially in the Barents Sea Opening, have pointed to the North Atlantic Oscillation (NAO) as the main cause of variability. Our results show that passing weather systems offer a better explanation of month-to-month variability. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea North Atlantic North Atlantic oscillation Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Arctic Ocean Barents Sea Gimsøy ENVELOPE(14.241,14.241,68.321,68.321) Norway Svinøy ENVELOPE(10.992,10.992,64.866,64.866) Journal of Physical Oceanography 53 2 389 408 |
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Open Polar |
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Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Abstract We explore drivers of variability in the Norwegian Atlantic Slope Current, which carries relatively warm Atlantic Water towards the Barents Sea and Arctic Ocean, using CMEMS satellite altimetry data and TOPAZ4 ocean reanalysis data. Previous studies have pointed to a variety of causes, on a variety of timescales. We use data with daily resolution to investigate day-to-day changes in ocean transport across three sections crossing the shelf-slope of Norway (Svinøy, Gimsøy and the Barents Sea Opening). The highest (lowest) extremes in transport at all sections develop over two days as a cyclonic (anticyclonic) atmospheric pressure system approaches from the southwest, piling up (extracting) water at the coast of Norway. The actual peak is reached when the pressure system passes the site of measurement, and the transport then relaxes for the next two days as the system continues northward along the coast. Other sources of short-term variability, such as propagating continental shelf waves and baroclinic instability, are unlikely to yield covariability over large separations. Monthly variability in the current can also be explained by passing weather systems since their numbers and intensity vary greatly from month to month. Many studies of longer-term variability, especially in the Barents Sea Opening, have pointed to the North Atlantic Oscillation (NAO) as the main cause of variability. Our results show that passing weather systems offer a better explanation of month-to-month variability. |
format |
Article in Journal/Newspaper |
author |
Brown, Nicola Mauritzen, Cecilie Li, Camille Madonna, Erica Isachsen, Pål Erik Lacasce, Joseph Henry |
spellingShingle |
Brown, Nicola Mauritzen, Cecilie Li, Camille Madonna, Erica Isachsen, Pål Erik Lacasce, Joseph Henry Rapid response of the Norwegian Atlantic Slope Current to wind forcing |
author_facet |
Brown, Nicola Mauritzen, Cecilie Li, Camille Madonna, Erica Isachsen, Pål Erik Lacasce, Joseph Henry |
author_sort |
Brown, Nicola |
title |
Rapid response of the Norwegian Atlantic Slope Current to wind forcing |
title_short |
Rapid response of the Norwegian Atlantic Slope Current to wind forcing |
title_full |
Rapid response of the Norwegian Atlantic Slope Current to wind forcing |
title_fullStr |
Rapid response of the Norwegian Atlantic Slope Current to wind forcing |
title_full_unstemmed |
Rapid response of the Norwegian Atlantic Slope Current to wind forcing |
title_sort |
rapid response of the norwegian atlantic slope current to wind forcing |
publishDate |
2022 |
url |
http://hdl.handle.net/10852/98509 https://doi.org/10.1175/JPO-D-22-0014.1 |
long_lat |
ENVELOPE(14.241,14.241,68.321,68.321) ENVELOPE(10.992,10.992,64.866,64.866) |
geographic |
Arctic Arctic Ocean Barents Sea Gimsøy Norway Svinøy |
geographic_facet |
Arctic Arctic Ocean Barents Sea Gimsøy Norway Svinøy |
genre |
Arctic Arctic Ocean Barents Sea North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Arctic Ocean Barents Sea North Atlantic North Atlantic oscillation |
op_source |
0022-3670 |
op_relation |
Brown, Nicola Mauritzen, Cecilie Li, Camille Madonna, Erica Isachsen, Pål Erik Lacasce, Joseph Henry . Rapid response of the Norwegian Atlantic Slope Current to wind forcing. Journal of Physical Oceanography. 2022 http://hdl.handle.net/10852/98509 2098244 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Physical Oceanography&rft.volume=&rft.spage=&rft.date=2022 Journal of Physical Oceanography https://doi.org/10.1175/JPO-D-22-0014.1 |
op_doi |
https://doi.org/10.1175/JPO-D-22-0014.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
53 |
container_issue |
2 |
container_start_page |
389 |
op_container_end_page |
408 |
_version_ |
1766340792383700992 |