no code implementations • 18 Jul 2023 • George Miloshevich, Dario Lucente, Pascal Yiou, Freddy Bouchet
In addition, we show that the SWG emulator trained on 80 years of data is capable of estimating extreme return times of order of thousands of years for heatwaves longer than several days more precisely than the fit based on generalised extreme value distribution.
2 code implementations • 1 Aug 2022 • George Miloshevich, Bastien Cozian, Patrice Abry, Pierre Borgnat, Freddy Bouchet
The main scientific message is that most of the time, training neural networks for predicting extreme heatwaves occurs in a regime of lack of data.
no code implementations • 17 Mar 2021 • Valérian Jacques-Dumas, Francesco Ragone, Pierre Borgnat, Patrice Abry, Freddy Bouchet
The present work explores the use of deep learning architectures, trained using outputs of a climate model, as an alternative strategy to forecast the occurrence of extreme long-lasting heatwaves.
no code implementations • 12 Jan 2021 • Ouassim Feliachi, Freddy Bouchet
We obtain a large deviation Hamiltonian that describes fluctuations and rare excursions of the empirical density, in the large plasma parameter limit.
Statistical Mechanics Chaotic Dynamics Plasma Physics
1 code implementation • 19 May 2020 • Thibault Lestang, Freddy Bouchet, Emmanuel Lévêque
While the AMS algorithm does not yield significant run-time savings as compared to direct sampling, the GKTL algorithm appears to be effective to sample very efficiently extreme fluctuations of the time-averaged drag and estimate related statistics such as return times.
Computational Physics Fluid Dynamics