This work uses the results of Matt Mazloff's Southern Ocean State Estimate, a.k.a. SOSE. I am very grateful to Matt for his data and advice. I also received extensive help from Helen Hill and Emily Shuckburgh, whose effective diffusivity technique is at the core of my study. Gael Forget provided me with smoothed data used to define average streamlines.
This figure shows the effective diffusivity along with streamwise-averaged flow speed (in cm/s).

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