The relationship between the eddy-driven jet stream and northern European sea level variability

Wintertime sea level variability over the northern European continental shelf is largely wind-driven. Using daily gridded sea level anomaly from altimetry, we examine both the spatial and the temporal relationship between northern European sea level variability and large-scale atmospheric circulatio...

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Autores principales:	Fabio Mangini, Léon Chafik, Erica Madonna, Camille Li, Laurent Bertino, Jan Even Øie Nilsen
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	northern european sea level jet clusters wind forcing eddy-driven jet stream satellite altimetry Oceanography GC1-1581 Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/7ad735f1ef134fca8673fe03e14f4a4c
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spelling	oai:doaj.org-article:7ad735f1ef134fca8673fe03e14f4a4c2021-12-01T14:40:58ZThe relationship between the eddy-driven jet stream and northern European sea level variability1600-087010.1080/16000870.2021.1886419https://doaj.org/article/7ad735f1ef134fca8673fe03e14f4a4c2021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/16000870.2021.1886419https://doaj.org/toc/1600-0870Wintertime sea level variability over the northern European continental shelf is largely wind-driven. Using daily gridded sea level anomaly from altimetry, we examine both the spatial and the temporal relationship between northern European sea level variability and large-scale atmospheric circulation patterns as represented by the jet cluster paradigm. The jet clusters represent different configurations of the eddy-driven jet stream and, therefore, provide a physical description of the atmospheric variability in the North Atlantic. We find that each of the four jet clusters is associated with a distinct northern European sea level anomaly pattern whose magnitudes are comparable to those of typical sea level variations on the shelf. In certain locations, such as the German Bight and the east coast of England, sea level anomalies are mainly associated with one single jet cluster. In other locations, such as the interior and the northern part of the North Sea, sea level anomalies are found to be sensitive to at least two jet configurations. Based on these regional sea level variations, we map out the locations on the shelf where each jet cluster or combination of clusters is most active before discussing the role of Ekman transport in inducing the resulting patterns. Through a multiple linear regression model, we also find that the jet clusters reconstruct up to 50% of the monthly mean sea level anomaly variance over the northern European continental shelf. The model best performs in the interior and the western part of the North Sea, suggesting that wind direction rather than wind speed plays a more prominent role over these regions. We conclude that the jet cluster approach gives valuable new insights compared to linear regression techniques for characterising wind-driven sea level variability over the northern European continental shelf.Fabio ManginiLéon ChafikErica MadonnaCamille LiLaurent BertinoJan Even Øie NilsenTaylor & Francis Grouparticlenorthern european sea leveljet clusterswind forcingeddy-driven jet streamsatellite altimetryOceanographyGC1-1581Meteorology. ClimatologyQC851-999ENTellus: Series A, Dynamic Meteorology and Oceanography, Vol 73, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	northern european sea level jet clusters wind forcing eddy-driven jet stream satellite altimetry Oceanography GC1-1581 Meteorology. Climatology QC851-999
spellingShingle	northern european sea level jet clusters wind forcing eddy-driven jet stream satellite altimetry Oceanography GC1-1581 Meteorology. Climatology QC851-999 Fabio Mangini Léon Chafik Erica Madonna Camille Li Laurent Bertino Jan Even Øie Nilsen The relationship between the eddy-driven jet stream and northern European sea level variability
description	Wintertime sea level variability over the northern European continental shelf is largely wind-driven. Using daily gridded sea level anomaly from altimetry, we examine both the spatial and the temporal relationship between northern European sea level variability and large-scale atmospheric circulation patterns as represented by the jet cluster paradigm. The jet clusters represent different configurations of the eddy-driven jet stream and, therefore, provide a physical description of the atmospheric variability in the North Atlantic. We find that each of the four jet clusters is associated with a distinct northern European sea level anomaly pattern whose magnitudes are comparable to those of typical sea level variations on the shelf. In certain locations, such as the German Bight and the east coast of England, sea level anomalies are mainly associated with one single jet cluster. In other locations, such as the interior and the northern part of the North Sea, sea level anomalies are found to be sensitive to at least two jet configurations. Based on these regional sea level variations, we map out the locations on the shelf where each jet cluster or combination of clusters is most active before discussing the role of Ekman transport in inducing the resulting patterns. Through a multiple linear regression model, we also find that the jet clusters reconstruct up to 50% of the monthly mean sea level anomaly variance over the northern European continental shelf. The model best performs in the interior and the western part of the North Sea, suggesting that wind direction rather than wind speed plays a more prominent role over these regions. We conclude that the jet cluster approach gives valuable new insights compared to linear regression techniques for characterising wind-driven sea level variability over the northern European continental shelf.
format	article
author	Fabio Mangini Léon Chafik Erica Madonna Camille Li Laurent Bertino Jan Even Øie Nilsen
author_facet	Fabio Mangini Léon Chafik Erica Madonna Camille Li Laurent Bertino Jan Even Øie Nilsen
author_sort	Fabio Mangini
title	The relationship between the eddy-driven jet stream and northern European sea level variability
title_short	The relationship between the eddy-driven jet stream and northern European sea level variability
title_full	The relationship between the eddy-driven jet stream and northern European sea level variability
title_fullStr	The relationship between the eddy-driven jet stream and northern European sea level variability
title_full_unstemmed	The relationship between the eddy-driven jet stream and northern European sea level variability
title_sort	relationship between the eddy-driven jet stream and northern european sea level variability
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/7ad735f1ef134fca8673fe03e14f4a4c
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The relationship between the eddy-driven jet stream and northern European sea level variability

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