Registro completo |
Provedor de dados: |
ArchiMer
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País: |
France
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Título: |
Improved description of the ocean mesoscale variability by combining four satellite altimeters - art. no. L02611
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Autores: |
Pascual, Ananda
Faugere, Yannice
Larnicol, Gilles
Le Traon, Pierre-yves
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Data: |
2006
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Ano: |
2006
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Palavras-chave: |
Satellite altimeters
Mesoscale variability
Global ocean
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Resumo: |
Data from four satellite altimeters are combined with the aim of improving the representation of the mesoscale variability in the Global Ocean. All missions [Jason-1, ERS-2/ENVISAT, Topex/Poseidon interleaved with Jason-1 and Geosat Follow-On] are cross-calibrated previously to produce weekly gridded maps. In areas of intense variability, the rms differences between a classical configuration of two altimeters and the scenario merging four missions can reach 10 cm and 400 cm(2)/s(2) in SLA and EKE, respectively, which represents an important percentage of the signal variance. A comparison with surface drifters shows that the four altimeter scenario improves the recovery of mesoscale structures that were not properly sampled with Jason(-1) + ERS-2/ENVISAT. Finally, the consistency between altimetric and tide gauge data is improved by about 25% when coastal sea level is estimated with 4 satellites compared to the results obtained with 2 altimeters.
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Tipo: |
Text
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Idioma: |
Inglês
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Identificador: |
http://archimer.ifremer.fr/doc/2006/publication-1038.pdf
DOI:10.1029/2005GL024633
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Editor: |
AGU
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Relação: |
http://archimer.ifremer.fr/doc/00000/1038/
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Formato: |
application/pdf
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Fonte: |
Geophysical Research Letters (0094-8276) (AGU), 2006 , Vol. 33 , N. 2 , P. NIL_13-NIL_16
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Direitos: |
2006 by the American Geophysical Union
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