Quantifying the Reliability of Mixing Diagnostics in Local and Non-local turbulent flows
Shane Keating, Shafer Smith
Courant Institute of Mathematical Sciences
(Abstract received 08/18/2009 for session B)
ABSTRACT
Several recent studies make use of satellite altimetry data to infer mixing diagnostics in the global upper ocean. The reliability of these diagnostics is unclear, however: in particular, the effect of unresolved scales on turbulent transport is difficult to quantify. We examine a range of mixing diagnostics in simulations of quasigeostrophic and surface quasigeostrophic turbulence and directly probe their dependence on sampling resolution. In this way, we aim to quantify the reliability of mixing diagnostics in turbulent flows exhibiting local and non-local spectral dynamics.
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