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Événements et séminaires - LSTA
Laboratoire de Statistique Théorique et Appliquée


18/10/2016 - Davide Faranda (LSCE)

 Groupe de Travail théorie des valeurs extrêmes

Extreme events of the atmospheric mid-latitude circulation: a dynamical systems perspective.


We will explore the link between rare recurrences of states in dynamical systems and the extreme value theory. Statistics is used to infer important properties of the system such as the distribution of local dimensions (entropy) and the stability of all accessible states. We apply this framework to weather reanalysis data, the daily NCEP 1948-2015 sea level pressure (SLP) fields over the North Atlantic. We show that extremes in the local (daily) dimensions and in the stability of SLP fields are related to climate extremes such as historical storms and blocking.