Finite Size Lyapunov Exponent (FSLE) is a local lagrangian diagnostics that is widely used for the study of transport and mixing processes of oceanographic tracers (Sea surface temperature, Ocean color ...). Its computation is derived from the definition of Finite-Time Lyapunov Exponent that allows the identification of Lagrangian Coherent Structures.
The code used to compute LE, was developed in collaboration between LOCEAN (F. d'Ovidio) and CLS, is available under GNU General Public License
Given a time series of meso-scale velocity field, this code computes corresponding sub-mesoscale maps of backward or forward FLSE or FTLE. It also compute other diagnostics such as orientation of Finite-Time Lyapunov Vectors.
Lagrangian is distributed under the GNU Lesser General Public License. See COPYING for details.
For full documentation visit the Documentation Page.