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2/5/2017: Séminaire de Youmin Tang (University of Northern British Columbia, Canada)

Improving seasonal climate predictions by using advanced mathematical methods.
Quand ? Le 02/05/2017,
de 10:30 à 12:30
Où ? Salle de réunion du LMD/Jussieu (T45-55, 3e étage)
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Téléphone 0144272799
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The first example is to rely on the basic properties of stochastic theory to develop an efficient technique for the extraction of climatically relevant singular vectors (CSV) in the presence of weather noise. Emphasis is placed on the applications of the CSV in seasonal climate predictions and to construct optimal ensemble climate predictions. The results indicates that the CSVs can well characterize the optimal error growth of the climate predictions and lead to better ensemble predictions than traditional time lag (TLE) method. The second example is about our recent progress in the state estimate of state-space models with applications of Bayesian-based algorithms. A simplified algorithm of Sigma-point Kalman filter is developed to deal with the state estimation of high-dimensional systems like atmospheric and oceanic general circulation models.

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