Computation of rare transitions in the barotropic quasi-geostrophic equations

  title={Computation of rare transitions in the barotropic quasi-geostrophic equations},
  author={Jason Laurie and Freddy Bouchet},
  journal={arXiv: Statistical Mechanics},
We investigate the theoretical and numerical computation of rare transitions in simple geophysical turbulent models. We consider the barotropic quasi-geostrophic and two-dimensional Navier-Stokes equations in regimes where bistability between two coexisting large-scale attractors exist. By means of large deviations and instanton theory with the use of an Onsager-Machlup path integral formalism for the transition probability, we show how one can directly compute the most probable transition path… 
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