Eddy diffusivity derived from drifter data for dispersion model applications

• DOI: 10.1007/s10236-012-0564-2
• Publication Date: 2012-08-17T05:21:41Z
• Authors: Michela De Dominicis; Giovanni Leuzzi; Paolo Monti; Nadia Pinardi; Pierre-Marie Poulain
• Keywords: Drifter; Eddy diffusion; Eddy; Stochastic modelling

Ocean transport and dispersion processes are at the present time simulated using Lagrangian stochastic models coupled with Eulerian circulation that supplying analyses forecasts of ocean currents unprecedented space resolution. Using approach, each particle displacement is described by an average motion a fluctuating part. The first one represents advection associated current field while second describes sub-grid scale diffusion. focus this study to quantify diffusion written in terms horizontal eddy diffusivity. large database drifters released different regions Mediterranean Sea, has been computed, considering regimes when averaging statistical quantities. In addition, real have trajectory model forced OGCM currents, focusing on how properties reproduced trajectories.