Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment
A multivariate dataset resulting from the assimilation of sea surface height and sea surface temperature data in an ocean circulation model of the North Atlantic, is used to study the Gulf Stream position variability from October 1992 to October 1999. The analysis takes place between 75° W and 50° W...
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Online Access: | https://hal.science/hal-00212268 https://hal.science/hal-00212268/document https://hal.science/hal-00212268/file/Variability.pdf https://doi.org/10.1080/01431160500254882 |
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ftunivnantes:oai:HAL:hal-00212268v1 2023-05-15T17:33:48+02:00 Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment Berline, L. Testut, Charles-Emmanuel Verron, Jacques Brasseur, Pierre Laboratoire des Écoulements Géophysiques et Industriels Grenoble (LEGI) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS) 2006 https://hal.science/hal-00212268 https://hal.science/hal-00212268/document https://hal.science/hal-00212268/file/Variability.pdf https://doi.org/10.1080/01431160500254882 en eng HAL CCSD Taylor & Francis info:eu-repo/semantics/altIdentifier/doi/10.1080/01431160500254882 hal-00212268 https://hal.science/hal-00212268 https://hal.science/hal-00212268/document https://hal.science/hal-00212268/file/Variability.pdf doi:10.1080/01431160500254882 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0143-1161 EISSN: 1366-5901 International Journal of Remote Sensing https://hal.science/hal-00212268 International Journal of Remote Sensing, 2006, 27, pp.417-432. ⟨10.1080/01431160500254882⟩ [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] info:eu-repo/semantics/article Journal articles 2006 ftunivnantes https://doi.org/10.1080/01431160500254882 2023-03-01T03:59:39Z A multivariate dataset resulting from the assimilation of sea surface height and sea surface temperature data in an ocean circulation model of the North Atlantic, is used to study the Gulf Stream position variability from October 1992 to October 1999. The analysis takes place between 75° W and 50° W and focuses on two regions, west and east of 65° W. By calculating zonal averages of the latitudinal position, a regular annual cycle of north–south oscillations of the Gulf Stream axis is identified in the eastern region, whereas inter‐annual variations dominate in the western region. An empirical orthogonal function (EOF) analysis of space–time position anomalies reveals that, even though the annual cycle dominates over the whole domain, the variability has a spatial consistency within each individual region. The assimilation dataset is further used to analyse the variability of the Gulf Stream transport towards the east. Compared to the latitudinal position analysis, the characterization of the transport variability is more complex. Semi‐annual fluctuations can be evidenced in both the regions; however, no significant correlation was found between the fluctuations of position and transport. Article in Journal/Newspaper North Atlantic Université de Nantes: HAL-UNIV-NANTES PLOS ONE 18 2 e0280218 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] |
spellingShingle |
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Berline, L. Testut, Charles-Emmanuel Verron, Jacques Brasseur, Pierre Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment |
topic_facet |
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] |
description |
A multivariate dataset resulting from the assimilation of sea surface height and sea surface temperature data in an ocean circulation model of the North Atlantic, is used to study the Gulf Stream position variability from October 1992 to October 1999. The analysis takes place between 75° W and 50° W and focuses on two regions, west and east of 65° W. By calculating zonal averages of the latitudinal position, a regular annual cycle of north–south oscillations of the Gulf Stream axis is identified in the eastern region, whereas inter‐annual variations dominate in the western region. An empirical orthogonal function (EOF) analysis of space–time position anomalies reveals that, even though the annual cycle dominates over the whole domain, the variability has a spatial consistency within each individual region. The assimilation dataset is further used to analyse the variability of the Gulf Stream transport towards the east. Compared to the latitudinal position analysis, the characterization of the transport variability is more complex. Semi‐annual fluctuations can be evidenced in both the regions; however, no significant correlation was found between the fluctuations of position and transport. |
author2 |
Laboratoire des Écoulements Géophysiques et Industriels Grenoble (LEGI) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Berline, L. Testut, Charles-Emmanuel Verron, Jacques Brasseur, Pierre |
author_facet |
Berline, L. Testut, Charles-Emmanuel Verron, Jacques Brasseur, Pierre |
author_sort |
Berline, L. |
title |
Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment |
title_short |
Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment |
title_full |
Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment |
title_fullStr |
Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment |
title_full_unstemmed |
Variability of the Gulf Stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment |
title_sort |
variability of the gulf stream position and transport between 1992 and 1999: a re-analysis based on a data assimilation experiment |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00212268 https://hal.science/hal-00212268/document https://hal.science/hal-00212268/file/Variability.pdf https://doi.org/10.1080/01431160500254882 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0143-1161 EISSN: 1366-5901 International Journal of Remote Sensing https://hal.science/hal-00212268 International Journal of Remote Sensing, 2006, 27, pp.417-432. ⟨10.1080/01431160500254882⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1080/01431160500254882 hal-00212268 https://hal.science/hal-00212268 https://hal.science/hal-00212268/document https://hal.science/hal-00212268/file/Variability.pdf doi:10.1080/01431160500254882 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1080/01431160500254882 |
container_title |
PLOS ONE |
container_volume |
18 |
container_issue |
2 |
container_start_page |
e0280218 |
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1766132424623783936 |