Data/hora: 05/06/2024 06:20:58

Provedor de dados: | 5
País: | France
Título: | Modeling the structure and variability of the southern Benguela upwelling using QuikSCAT wind forcing - art. no. C07018
Autores: | Blanke, Bruno; Speich, Sabrina; Bentamy, Abderrahim; Roy, Claude; Sow, Bamol.
Data: | 2005-07
Ano: | 2005
Palavras-chave: | High resolution model; Ai sea interaction; Coastal upwelling.
Resumo: | The structure and patterns of variability of the southern Benguela coastal upwelling system are investigated with a high-resolution regional model forced by QuikSCAT winds over 1999-2003. The relevance of this global wind product is tested, at first, for the specific nearshore southeast Atlantic; then, the wind products are spatially or temporally degraded from the original 0.5 degrees daily fluxes and are used to diagnose the main scales of the surface dynamical forcing variability. Time resolution appears as a crucial factor in the wind stress to retrieve the patterns of interannual anomalies in sea surface temperatures in a good agreement with independent NASA Pathfinder observations. Various upwelling indices are also calculated in the model to study specific warm or cold coastal events whose circulation schemes are detailed from a Lagrangian interpretation of the model time-varying three-dimensional velocity field. Our study emphasizes the connections established between the Benguela upwelling and the large-scale circulation in relation with, for instance, the Agulhas Current retroflection and associated ring shedding.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2005/publication-768.pdf

DOI:10.1029/2004JC002529

Editor: | American Geophysical Union
Relação: | http://archimer.ifremer.fr/doc/00000/768/
Formato: | application/pdf
Fonte: | Journal of Geophysical Union - Research C - Oceans (0148-0227) (American Geophysical Union), 2005-07 , Vol. 110 , N. C7 , P. NIL_1-NIL_18
Fonte: | 2005 American Geophysical Union