```
Wolfram, Phillip J., and Ringler, Todd D.
```*Quantifying residual, eddy, and mean flow effects on mixing in an idealized circumpolar current*. United States: N. p., 2017.
Web. doi:10.1175/JPO-D-16-0101.1.

```
Wolfram, Phillip J., & Ringler, Todd D.
```*Quantifying residual, eddy, and mean flow effects on mixing in an idealized circumpolar current*. United States. doi:10.1175/JPO-D-16-0101.1.

```
Wolfram, Phillip J., and Ringler, Todd D. 2017.
"Quantifying residual, eddy, and mean flow effects on mixing in an idealized circumpolar current". United States.
doi:10.1175/JPO-D-16-0101.1.
```

```
@article{osti_1369499,
```

title = {Quantifying residual, eddy, and mean flow effects on mixing in an idealized circumpolar current},

author = {Wolfram, Phillip J. and Ringler, Todd D.},

abstractNote = {Meridional diffusivity is assessed in this paper for a baroclinically unstable jet in a high-latitudeIdealized Circumpolar Current (ICC) using the Model for Prediction Across Scales-Ocean (MPAS-O) and the online Lagrangian In-situ Global High-performance particle Tracking (LIGHT) diagnostic via space-time dispersion of particle clusters over 120 monthly realizations of O(106) particles on 11 potential density surfaces. Diffusivity in the jet reaches values of O(6000 m2 s-1) and is largest near the critical layer supporting mixing suppression and critical layer theory. Values in the vicinity of the shelf break are suppressed to O(100 m2 s-1) due to the presence of westward slope front currents. Diffusivity attenuates less rapidly with depth in the jet than both eddy velocity and kinetic energy scalings would suggest. Removal of the mean flow via high-pass filtering shifts the nonlinear parameter (ratio of the eddy velocity to eddy phase speed) into the linear wave regime by increasing the eddy phase speed via the depth-mean flow. Low-pass filtering, in contrast, quantifies the effect of mean shear. Diffusivity is decomposed into mean flow shear, linear waves, and the residual nonhomogeneous turbulence components, where turbulence dominates and eddy-produced filamentation strained by background mean shear enhances mixing, accounting for ≥ 80% of the total diffusivity relative to mean shear [O(100 m2 s-1)], linear waves [O(1000 m2 s-1)], and undecomposed full diffusivity [O(6000 m2 s-1)]. Finally, diffusivity parameterizations accounting for both the nonhomogeneous turbulence residual and depth variability are needed.},

doi = {10.1175/JPO-D-16-0101.1},

journal = {Journal of Physical Oceanography},

number = ,

volume = ,

place = {United States},

year = 2017,

month = 5

}