2020
DOI: 10.1029/2020ms002049
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A Breakdown in Potential Vorticity Estimation Delineates the Submesoscale‐to‐Turbulence Boundary in Large Eddy Simulations

Abstract: Most submesoscale motions-fronts, eddies, filaments, and even large internal waves-are sufficiently rapidly rotating and stratified as to be strongly influenced by potential vorticity dynamics. Below the Ozmidov scale where turbulence overturns and isotropizes, potential vorticity is not commonly considered. Here, it is shown that in Large Eddy Simulations, the velocity gradients, buoyancy gradients, and potential vorticity are strongly influenced by grid-scale processes. Grid-scale processes in Large Eddy Sim… Show more

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Cited by 15 publications
(5 citation statements)
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References 64 publications
(132 reference statements)
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“…18 of 26 spacings become finer to resolve smaller-scale fronts (Bodner & Fox-Kemper, 2020). But the 10th percentile PV in KPP55 is comparable with the value in the KPP550 here.…”
Section: 1029/2020ms002302supporting
confidence: 51%
See 1 more Smart Citation
“…18 of 26 spacings become finer to resolve smaller-scale fronts (Bodner & Fox-Kemper, 2020). But the 10th percentile PV in KPP55 is comparable with the value in the KPP550 here.…”
Section: 1029/2020ms002302supporting
confidence: 51%
“…The 10th percentile of PV in SI550 is shifted to a smaller negative value in contrast to KPP550 and KPP55 (Figure 13c). PV is scale‐dependent, and the magnitude of the surface PV flux will become larger as grid spacings become finer to resolve smaller‐scale fronts (Bodner & Fox‐Kemper, 2020). But the 10th percentile PV in KPP55 is comparable with the value in the KPP550 here.…”
Section: Resultsmentioning
confidence: 99%
“…It is beyond the scope of this paper to provide a detailed review of these methodologies. However, it is important to note that while the term “unbalanced flow” is often used synonymously with “internal waves” in this literature, the two are not equivalent in extreme parameter regimes such as the ocean submesoscale, which at high Rossby number may project onto both the balanced and unbalanced component of the flow (e.g., Bodner & Fox‐Kemper, 2020; McWilliams, 2016). In such a regime, the “unbalanced flow” may contain both internal waves and some submesoscale signal, but the Lagrangian filtered flow would (or at least should) contain only internal waves.…”
Section: Introductionmentioning
confidence: 99%
“…10.1029/2020MS002302 18 of 26 spacings become finer to resolve smaller-scale fronts (Bodner & Fox-Kemper, 2020). But the 10th percentile PV in KPP55 is comparable with the value in the KPP550 here.…”
Section: Mixed Layer Thickness and Potential Vorticitymentioning
confidence: 59%