Typical fluid particle trajectories are sensitive to changes in their initial conditions. This
makes the assessment of flow models and observations from individual tracer samples …

For several decades, jets and fronts have been known from observations to be significant
sources of internal gravity waves in the atmosphere. Motivations to investigate these waves …

Rotationally coherent Lagrangian vortices are formed by tubes of deforming fluid elements
that complete equal bulk material rotation relative to the mean rotation of the deforming fluid …

The most widely used definitions of a vortex are not objective: they identify different
structures as vortices in frames that rotate relative to each other. Yet a frame-independent …

The motivation to study the vertical exchanges of tracers associated with mesoscale eddies
is that the mean concentration of most oceanic tracers changes rapidly with depth. Because …

Using a protocol of numerical experiments where horizontal resolution is progressively
increased, we show that small-scale (or sub-mesoscale) physics has a strong impact on …

Satellite observations of the last two decades have led to a major breakthrough emphasizing
the existence of a strongly energetic mesoscale turbulent eddy field in all the oceans. This …

A goal in this paper is to provide mathematically exact and frame-independent criteria for the
identification of Lagrangian coherent structures in two-dimensional turbulence. Roughly …

Oceanic and atmospheric dynamics are often interpreted through potential vorticity, as this
quantity is conserved along the geostrophic flow. However, in addition to potential vorticity …

Transport and mixing properties of surface currents can be detected from altimetric data by
both Eulerian and Lagrangian diagnostics. In contrast with Eulerian diagnostics, Lagrangian …