Data/hora: 09/06/2024 07:30:37

Provedor de dados: | 5
País: | France
Título: | Improved description of the ocean mesoscale variability by combining four satellite altimeters - art. no. L02611
Autores: | Pascual, Ananda; Faugere, Yannice; Larnicol, Gilles; Le Traon, Pierre-yves.
Data: | 2006
Ano: | 2006
Palavras-chave: | Satellite altimeters; Mesoscale variability; Global ocean.
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.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2006/publication-1038.pdf

DOI:10.1029/2005GL024633

Editor: | AGU
Relação: | http://archimer.ifremer.fr/doc/00000/1038/
Formato: | application/pdf
Fonte: | Geophysical Research Letters (0094-8276) (AGU), 2006 , Vol. 33 , N. 2 , P. NIL_13-NIL_16
Fonte: | 2006 by the American Geophysical Union