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Provedor de dados:  5
País:  France
Título:  Reconstructability of 3-Dimensional Upper Ocean Circulation from SWOT Sea Surface Height Measurements
Autores:  Qiu, Bo
Chen, Shuiming
Klein, Patrice
Ubelmann, Clement
Fu, Lee-lueng
Sasaki, Hideharu
Data:  2016-03
Ano:  2016
Palavras-chave:  Variability
Models and modeling
General circulation models
Vertical motion
Circulation/ Dynamics
Quasigeostrophic models
Mesoscale processes
Observational techniques and algorithms
Oceanic variability
Resumo:  Utilizing the framework of effective surface quasi-geostrophic (eSQG) theory, we explored the potential of reconstructing the 3D upper ocean circulation structures, including the balanced vertical velocity (w) field, from high-resolution sea surface height (SSH) data of the planned SWOT satellite mission. Specifically, we utilized the 1/30°, submesoscale-resolving, OFES model output and subjected it through the SWOT simulator that generates the along-swath SSH data with expected measurement errors. Focusing on the Kuroshio Extension region in the North Pacific where regional Rossby numbers range from 0.22 to 0.32, we found that the eSQG dynamics constitutes an effective framework for reconstructing the 3D upper ocean circulation field. Using the modeled SSH data as input, the eSQG-reconstructed relative vorticity (ζ) and w fields are found to reach a correlation of 0.7–0.9 and 0.6–0.7, respectively, in the 1,000m upper ocean when compared to the original model output. Degradation due to the SWOT sampling and measurement errors in the input SSH data for the ζ and w reconstructions is found to be moderate, 5–25% for the 3D ζ field and 15-35% for the 3D w field. There exists a tendency for this degradation ratio to decrease in regions where the regional eddy variability (or Rossby number) increases.
Tipo:  Text
Idioma:  Inglês

Editor:  Amer Meteorological Soc
Formato:  application/pdf
Fonte:  Journal Of Physical Oceanography (0022-3670) (Amer Meteorological Soc), 2016-03 , Vol. 46 , N. 3 , P. 947-963
Direitos:  2016 American Meteorological Society


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