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Conference Papers Year : 2013

Validation of high and super resolution ocean dynamics products


In this work we present the validation of two products showing ocean dynamics at high resolution. The first one is calculated from a combination of geostrophic currents derived from satellite absolute dynamic topography, and blended wind driven currents following the methodology proposed by Sudre et al. (2013) [1]. The second ocean dynamics product at super resolution (1/24°) is established on an approximation of the energy cascade, expressed in a microcanonical formulation, and associated to turbulent signal provided by SST MODIS-Aqua product at 1/24° [2]. The basic idea is to use optimal cascading to decrease the spatial resolution of SST MODIS-Aqua product at 1/24°, then use the motion information available at lower resolution coming from the first product just described , transmit that information along the scales back to higher spatial resolution using the cascade to obtain a 1/24° resolution motion field [3]. These two products are validated with drifters drogued at 15-m depth from the Global Drifter Program at AOML and other in-situ currents products. [1]J. Sudre, C. Maes, and V. Garçon, 2013, On the global estimates of geostrophic and Ekman surface currents, Limnology and Oceanography: Fluids and Environments, vol. 3, pp. 1-20, DOI 10.1215/21573689-2071927. [2]H. Yahia, J. Sudre, C. Pottier and V. Garçon, 2010, Motion analysis in oceanographic satellite images using multiscale methods and the energy cascade, Pattern Recognition, DOI: 10.1016/J.patcog.2010.04.011. [3]J. Sudre, H. Yahia, V. Garçon, O. Pont, and C. Pottier, Ocean turbulent dynamics at super resolution: A true picture, in prep.
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hal-00812833 , version 1 (12-04-2013)


  • HAL Id : hal-00812833 , version 1


J. Sudre, Hussein Yahia, Oriol Pont, Claire Pottier, C. Maes, et al.. Validation of high and super resolution ocean dynamics products. Ocean Surface Currents: Towards Future Mission Concepts, European Spatial Agency, Apr 2013, Space Research and Technology Centre of the European Space Agency (ESA/ESTEC), located 35km south-we, Netherlands. ⟨hal-00812833⟩
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