Journal
OCEAN MODELLING
Volume 36, Issue 3-4, Pages 208-218Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ocemod.2010.12.006
Keywords
Lagrangian methods; Finite-size Lyapunov exponents
Categories
Funding
- MEC [FIS2007-60327]
- FEDER
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Much of atmospheric and oceanic transport is associated with coherent structures. Lagrangian methods are emerging as optimal tools for their identification and analysis. An important Lagrangian technique which is starting to be widely used in oceanography is that of finite-size Lyapunov exponents (FSLEs). Despite this growing relevance there are still many open questions concerning the reliability of the FSLEs in order to analyse the ocean dynamics. In particular, it is still unclear how robust they are when confronted with real data. In this paper we analyze the effect on this Lagrangian technique of the two most important effects when facing real data, namely noise and dynamics of unsolved scales. Our results, using as a benchmark data from a primitive numerical model of the Mediterranean Sea, show that even when some dynamics is missed the FSLEs results still give an accurate picture of the oceanic transport properties. (C) 2010 Elsevier Ltd. All rights reserved.
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