| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Impact of oceanic-scale interactions on the seasonal modulation of ocean dynamics by the atmosphere
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| Autores: |
Sasaki, Hideharu
Klein, Patrice
Qiu, Bo
Sasai, Yoshikazu
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| Data: |
2014-12-15
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| Ano: |
2014
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| Palavras-chave: |
Earth sciences
Oceanography
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| Resumo: |
Ocean eddies (with a size of 100-300 km), ubiquitous in satellite observations, are known to represent about 80% of the total ocean kinetic energy. Recent studies have pointed out the unexpected role of smaller oceanic structures (with 1-50 km scales) in generating and sustaining these eddies. The interpretation proposed so far invokes the internal instability resulting from the large-scale interaction between upper and interior oceanic layers. Here we show, using a new high-resolution simulation of the realistic North Pacific Ocean, that ocean eddies are instead sustained by a different process that involves small-scale mixed-layer instabilities set up by large-scale atmospheric forcing in winter. This leads to a seasonal evolution of the eddy kinetic energy in a very large part of this ocean, with an amplitude varying by a factor almost equal to 2. Perspectives in terms of the impacts on climate dynamics and future satellite observational systems are briefly discussed.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00250/36098/34642.pdf
http://archimer.ifremer.fr/doc/00250/36098/34643.pdf
DOI:10.1038/ncomms6636
http://archimer.ifremer.fr/doc/00250/36098/
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| Editor: |
Nature Publishing Group
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| Formato: |
application/pdf
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| Fonte: |
Nature Communications (2041-1723) (Nature Publishing Group), 2014-12-15 , Vol. 5 , P. 1-8
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| Direitos: |
2014 Macmillan Publishers Limited. All rights reserved.
info:eu-repo/semantics/openAccess
restricted use
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