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={New Journal of Physics},
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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