24.10.2016: FB1-Seminar

11:00 h, Hörsaal, Düsternbrooker Weg 20

Abstract:  

Most coarse resolution ocean models still parameterize the effects of eddies assuming flux-gradient relationships involving a diffusion tensor, with diffusivities assuming local downgradient parameterizations. Lagrangian particle dispersion statistics are a classic tool to quantify diffusivities and can help shed light on the validity of the eddy diffusion model. We assess here spatial distributions and convergence properties of Lagrangian eddy diffusivities from an eddying ocean model and discuss them in the context of linear instability theory and mesoscale eddy parameterizations.  

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