| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Meridional Overturning Circulation Transport Variability at 34.5 degrees S During 2009-2017: Baroclinic and Barotropic Flows and the Dueling Influence of the Boundaries
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| Autores: |
Meinen, Christopher S.
Speich, Sabrina
Piola, Alberto R.
Ansorge, Isabelle
Campos, Edmo
Kersale, Marion
Terre Terrillon, Thierry
Chidichimo, Maria Paz
Lamont, Tarron
Sato, Olga T.
Perez, Renellys C.
Valla, Daniel
Van Den Berg, Marcel
Le Henaff, Matthieu
Dong, Shenfu
Garzoli, Silvia L.
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| Data: |
2018-05-01
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| Ano: |
2018
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| Palavras-chave: |
Meridional overturning circulation
South Atlantic
Overturning
Volume transport
Observations
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| Resumo: |
Six years of simultaneous moored observations near the western and eastern boundaries of the South Atlantic are combined with satellite winds to produce a daily time series of the basin-wide meridional overturning circulation (MOC) volume transport at 34.5 degrees S. The results demonstrate that barotropic and baroclinic signals at both boundaries cause significant transport variations, and as such must be concurrently observed. The data, spanning similar to 20 months during 2009-2010 and similar to 4 years during 2013-2017, reveal a highly energetic MOC record with a temporal standard deviation of 8.3 Sv, and strong variations at time scales ranging from a few days to years (peak-to-peak range = 54.6 Sv). Seasonal transport variations are found to have both semiannual (baroclinic) and annual (Ekman and barotropic) timescales. Interannual MOC variations result from both barotropic and baroclinic changes, with density profile changes at the eastern boundary having the largest impact on the year-to-year variations.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00445/55612/57253.pdf
DOI:10.1029/2018GL077408
https://archimer.ifremer.fr/doc/00445/55612/
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| Editor: |
Amer Geophysical Union
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| Formato: |
application/pdf
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| Fonte: |
Geophysical Research Letters (0094-8276) (Amer Geophysical Union), 2018-05-01 , Vol. 45 , N. 9 , P. 4180-4188
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| Direitos: |
2018. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
info:eu-repo/semantics/openAccess
restricted use
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