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arXiv · 1301.5801

Avalanches, Breathers and Flow Reversal in a Continuous Lorenz-96 Model

Richard Blender·Jeroen Wouters·Valerio Lucarini
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Abstract

For the discrete model suggested by Lorenz in 1996 a one-dimensional long wave approximation with nonlinear excitation and diffusion is derived. The model is energy conserving but non-Hamiltonian. In a low order truncation weak external forcing of the zonal mean flow induces avalanche-like breather solutions which cause reversal of the mean flow by a wave-mean flow interaction. The mechanism is an outburst-recharge process similar to avalanches in a sand pile model.

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Richard Blender, Jeroen Wouters, Valerio Lucarini. 2013-01-24. Avalanches, Breathers and Flow Reversal in a Continuous Lorenz-96 Model. https://doi.org/10.1103/physreve.88.013201

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