Deducing an upper bound to the horizontal eddy diffusivity using a stochastic Lagrangian model

  title={Deducing an upper bound to the horizontal eddy diffusivity using a stochastic Lagrangian model},
  author={Daniel F. Carlson and E. Fredj and Hezi Gildor and Vered Rom-Kedar},
We present a method for estimating the upper bound of the horizontal eddy diffusivity using a non-stationary Lagrangian stochastic model. First, we identify a mixing barrier using a priori evidence (e.g., aerial photographs or satellite imagery) and using a Lagrangian diagnostic calculated from observed or modeled spatially non-trivial, time-dependent velocities [for instance, the relative dispersion (RD) or finite time Lyapunov exponent (FDLE)]. Second, we add a stochastic component to the… CONTINUE READING


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