Mixing and stirring in the oceanâ¦. The diffusion equation Molecular ...
Mixing and stirring in the oceanâ¦. The diffusion equation Molecular ...
Mixing and stirring in the oceanâ¦. The diffusion equation Molecular ...
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Turbulent <strong>diffusion</strong>….Turbulent flows are irregular <strong>and</strong> confused.<strong>The</strong> ocean is turbulent on all scales larger than a few cm.It is still possible to use <strong>the</strong> <strong>diffusion</strong> <strong>equation</strong>(flux/gradient arguments might still hold), but we canno longer use <strong>the</strong> molecular diffusivities.<strong>The</strong> concept of a turbulent diffusivity is only aparameterization of <strong>the</strong> turbulence; essentiallywe are replac<strong>in</strong>g <strong>the</strong> molecular value with a muchlarger one, but assum<strong>in</strong>g <strong>the</strong> process of <strong>diffusion</strong>generally rema<strong>in</strong>s <strong>the</strong> same.[<strong>the</strong> “eddy diffusivity”]
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