Avalanches, Breathers and Flow Reversal in a Continuous Lorenz-96 Model
Adaptation and Self-Organizing Systems
2015-06-12 v1 Atmospheric and Oceanic Physics
Fluid Dynamics
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.
Keywords
Cite
@article{arxiv.1301.5801,
title = {Avalanches, Breathers and Flow Reversal in a Continuous Lorenz-96 Model},
author = {Richard Blender and Jeroen Wouters and Valerio Lucarini},
journal= {arXiv preprint arXiv:1301.5801},
year = {2015}
}
Comments
4 pages, 3 figures