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Anisotropic eddy transport in models and observations

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If you have a question about this talk, please contact Povl Abrahamsen .

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Anisotropic properties of the material transport by mesoscale eddies and eddy-driven zonal jets are examined here through the analysis of Lagrangian particle trajectories. These trajectories are calculated in a hierarchy of numerical simulations, as well as using velocity estimates from satellite altimetry. The resulting spreading rates (defined here as half the rate of change in the particle dispersion) in the zonal direction systematically and significantly exceed the meridional ones. The analysis further demonstrates that this anisotropy is primarily due to the action of the transient eddies that are elongated in the zonal direction.

This talk is part of the British Antarctic Survey - Polar Oceans seminar series series.

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