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Article Dans Une Revue IEEE Transactions on Geoscience and Remote Sensing Année : 2013

Segmentation of mesoscale ocean surface dynamics using satellite SST and SSH observations

Résumé

Multi-satellite measurements of altimeter-derived Sea Surface Height (SSH) and Sea Surface Temperature (SST) provide a wealth of information about ocean circulation, especially mesoscale ocean dynamics which may involve strong spatio-temporal relationships between SSH and SST fields. Within an observation-driven framework, we investigate the extent to which mesoscale ocean dynamics may be decomposed into a mixture of dynamical modes, characterized by different local regressions between SSH and SST fields. Formally, we develop a novel latent class regression model to identify dynamical modes from joint SSH and SST observation series. Applied to the highly dynamical Agulhas region, we demonstrate and discuss the geophysical relevance of the proposed mixture model to achieve a spatio-temporal segmentation of the upper ocean dynamics.
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Dates et versions

hal-00947965 , version 1 (19-02-2014)

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Pierre Tandeo, Bertrand Chapron, Sileye Ba, Emmanuelle Autret, Ronan Fablet. Segmentation of mesoscale ocean surface dynamics using satellite SST and SSH observations. IEEE Transactions on Geoscience and Remote Sensing, 2013, 52 (7), pp.4227 - 4235. ⟨10.1109/TGRS.2013.2280494⟩. ⟨hal-00947965⟩
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