Articles | Volume 26, issue 2
Nonlin. Processes Geophys., 26, 73–89, 2019
Nonlin. Processes Geophys., 26, 73–89, 2019

Research article 07 May 2019

Research article | 07 May 2019

Lyapunov analysis of multiscale dynamics: the slow bundle of the two-scale Lorenz 96 model

Mallory Carlu et al.

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Cited articles

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Blender, R., Lucarini, V., and Wouters, J.: Avalanches, breathers, and flow reversal in a continuous Lorenz-96 model, Phys. Rev. E, 88, 013201,, 2013. a
Short summary
We explore the nature of instabilities in a well-known meteorological toy model, the Lorenz 96, to unravel key mechanisms of interaction between scales of different resolutions and time scales. To do so, we use a mathematical machinery known as Lyapunov analysis, allowing us to capture the degrees of chaoticity associated with fundamental directions of instability. We find a non-trivial group of such directions projecting significantly on slow variables, associated with long term dynamics.