Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry
International audience 10 years of surface geostrophic currents from TOPEX/Poséïdon altimetric data are used to describe the low frequency variability of the tropical Atlantic circulation through Empirical Orthogonal Function analysis. The seasonal variability clearly agrees with previous studies ba...
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Online Access: | https://hal.science/hal-01834313 https://doi.org/10.1029/2003GL019210 |
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ftccsdartic:oai:HAL:hal-01834313v1 2023-12-17T10:46:33+01:00 Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry Arnault, Sabine Kestenare, Élodie Laboratoire d'océanographie dynamique et de climatologie (LODYC) Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) 2004 https://hal.science/hal-01834313 https://doi.org/10.1029/2003GL019210 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2003GL019210 hal-01834313 https://hal.science/hal-01834313 doi:10.1029/2003GL019210 IRD: fdi:010056271 ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-01834313 Geophysical Research Letters, 2004, 31 (3), ⟨10.1029/2003GL019210⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2004 ftccsdartic https://doi.org/10.1029/2003GL019210 2023-11-19T01:23:26Z International audience 10 years of surface geostrophic currents from TOPEX/Poséïdon altimetric data are used to describe the low frequency variability of the tropical Atlantic circulation through Empirical Orthogonal Function analysis. The seasonal variability clearly agrees with previous studies based on climatological data. It shows the tropical Atlantic response to seasonal fluctuations of the overlying wind system. More interesting is the capability, using altimetry, to reach for the first time on a basin scale the year‐to‐year variability from measurements. Abnormal events occur in 1996–1997 and in 2001 with different spatial scales regarding both large scale zonal distribution and regional variability located in the north‐western basin. A first attempt to link these events to climatic indexes (El Niño‐Southern Oscillation, North Atlantic Oscillation) is also evocated. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Western Basin Geophysical Research Letters 31 3 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Arnault, Sabine Kestenare, Élodie Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience 10 years of surface geostrophic currents from TOPEX/Poséïdon altimetric data are used to describe the low frequency variability of the tropical Atlantic circulation through Empirical Orthogonal Function analysis. The seasonal variability clearly agrees with previous studies based on climatological data. It shows the tropical Atlantic response to seasonal fluctuations of the overlying wind system. More interesting is the capability, using altimetry, to reach for the first time on a basin scale the year‐to‐year variability from measurements. Abnormal events occur in 1996–1997 and in 2001 with different spatial scales regarding both large scale zonal distribution and regional variability located in the north‐western basin. A first attempt to link these events to climatic indexes (El Niño‐Southern Oscillation, North Atlantic Oscillation) is also evocated. |
author2 |
Laboratoire d'océanographie dynamique et de climatologie (LODYC) Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Arnault, Sabine Kestenare, Élodie |
author_facet |
Arnault, Sabine Kestenare, Élodie |
author_sort |
Arnault, Sabine |
title |
Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry |
title_short |
Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry |
title_full |
Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry |
title_fullStr |
Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry |
title_full_unstemmed |
Tropical Atlantic surface current variability from 10 years of TOPEX/Poséïdon altimetry |
title_sort |
tropical atlantic surface current variability from 10 years of topex/poséïdon altimetry |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-01834313 https://doi.org/10.1029/2003GL019210 |
geographic |
Western Basin |
geographic_facet |
Western Basin |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-01834313 Geophysical Research Letters, 2004, 31 (3), ⟨10.1029/2003GL019210⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2003GL019210 hal-01834313 https://hal.science/hal-01834313 doi:10.1029/2003GL019210 IRD: fdi:010056271 |
op_doi |
https://doi.org/10.1029/2003GL019210 |
container_title |
Geophysical Research Letters |
container_volume |
31 |
container_issue |
3 |
_version_ |
1785570063695216640 |