SAMA Home Page

Welcome to "Statistiques pour l'Analyse, la Modélisation et l'Assimilation" (SAMA)'s home page, a group that focuses on theoretical and applied statistics, data assimilation and neural networks, with an emphasis on applications related to geophysical problems.

SAMA News

(the dates of the very next events are highlighted in green)

December 9th-10th 2010 - Colloque National sur l'Assimilation de Données, Grenoble (note that the corresponding pages are in French only)

News related to SAMA topics

Nothing yet...

Past events

SAMA events:

December 8th 2009 - 11.00AM - Armel Martin (L.S.C.E.) Seminar :
Régionalisation de climatologies mensuelles issues d'un EMIC: application aux changements climatiques proches et lointains.
May 7th 2009 - 10.30AM-4.30PM - Second HaSaRDS meeting , in the Chouard amphi at Jussieu University: Chaos, Determinism & risk in environment
Speakers: Michael Ghil (CERES-ERTI & Dpt. TAO ENS) & Étienne Ghys (ENS Lyon) For more information, follow the link.
January 22th 2009 - 10AM-4PM - Inaugural day of HaSaRDS project , in the seminar room of TAO department, ENS Paris: Comprendre le risque environnemental: de la théorie des probabilités à l'évaluation des impacts.
Speakers: Nicolas Bouleau (ENPC) & Eric Parent (AgroParitech) For more information, follow the link.
January 20th 2009 - Jana Sillmann (Max Planck Institute for Meteorology) Seminar :
Extreme climate events and Euro-Atlantic atmospheric blocking in present and future climate model simulations.
December 4th 2008 - * CANCELED * Gael Grenouillet & Clément Tisseuil (Univ. Paul Sabatier) Seminar :
Global change impact on the fresh water fishes biodiversity: statistical modelling and cases studies in France.
December 1st-2nd 2008 - Colloque National sur l'Assimilation de Données, Paris, France (note that the corresponding pages are in French only) -- PRESENTATIONS AVAILABLE ON THE "Programme" PAGE --
November 10th-13rd 2008 - WMO Workshop, Buenos Aires, Argentine :
4D-Var and Ensemble Kalman Filter Intercomparisons
September 11th 2008 - Alexis Hannart (LOCEAN) Seminar :
A Bayesian homogenization method: Sequential detection based on prior characterization of change points
May 28th 2008 - Matthieu Lengaigne and Jhan Carlo Espinoza (LOCEAN) Seminar , presenting respectively:
*Spatial characteristics of the El Nino/Austral Oscillation variability in the ocean-atmophere coupled models from the IPCC-AR4 database
*Using neural networks to study time modes in the Amazonian basin
May 15th-16th 2008 - SAMA workshop about Ensemble methods in Meteorology and oceanography, intended to assess the state of the art of ensemble methods, in the forecast as well as the data assimilation domains, identify applications, the possibilities and limitations of these methods, and the future research directions.
The workshop range is very wide, covering every applications linked to meteorology and oceanography, like atmospheric chemistry or hydrology.
March 21st 2008, 2.00-4.00 PM - Extreme Values Reading Group meeting :
Louis de Montera presents Prédiction multi-step de la volatilité: le modèle ARIMA-GARCH appliqué aux séries temporelles d'affaiblissement par la pluie sur les liaisons Terre-Satellite
and also: Short-term prediction of rain attenuation level and volatility in Earth-to-Satellite links at EHF band
February 19th 2008, 2.00-4.00 PM - Extreme Values Reading Group meeting :
Liliane Bel & Ch. Lantuéjoul present Assessing extremal dependence of environmental spatial fields
February 14th 2008, 14.00PM - Ensemble methods & extreme events meeting, introducing two forecoming workshops.
Olivier Talagrand (LMD/IPSL) presents: Ensemble methods for assimilation and forecast
Philippe Naveau (LSCE/IPSL) presents: Extreme value theory and state-space modeling
January 25th 2008, 2.00-4.00 PM - Extreme Values Reading Group meeting :
Gwladys Toulemonde & Esterina Masiello present Spatial extremes: models for the stationary case
and also On spatial extremes: with applications to a rainfall problem
Novembre 23rd 2007, 2.00-4.00 PM - Extreme Values Reading Group meeting :
Julie Carreau presents A mixture model for multivariate extremes
October 5th 2007 - B. Pinty (Global Environment Monitoring Unit, IES, EC Joint Research Centre, Italy) Seminar (home page):
Optimal retrieval of vegetation canopy characteristics and partitioning of the solar radiant fluxes using operational MODIS and MISR surface albedo products
July 30th 2007 - M. Kallache (Potsdam Institute for Climate Impact Research) Seminar (home page):
Trends in mean and extreme values of river discharge time series
June 22nd 2007: M.-L. Segond (Météo France & CEMAGREF) Seminar :
Modélisation spatio-temporelle des précipitations de trois régions du Royaume-Uni
May 30th 2007 - Paul-Antoine Michelangeli (Climpact) Seminar :
Variabilité annuelle à décennale de la production énergétique éolienne passée et future en France (1958-2100)
May 15th 2007 - Benjamin Ruston (Naval Research Laboratory) Seminar :
Data Assimilation at NRL
May 14th 2007, 3.30 PM - Mathieu Ribatet and Eric Sauquet (CEMAGREF) Seminar , presenting respectively:
*Improve flood quantile estimates using local information more efficiently. Modelling all exceedances above a threshold
*Des techniques géostatistiques adaptées pour l'interpolation de débits de référence : du module aux extrêmes
May 2nd 2007, 2.00-4.30 PM - Extreme Values Reading Group meeting :
Aurélie Muller presents Bayesian comparison of different rainfall depth-duration frequency relationships
April 27th 2007, 2.30-4.00 PM - Downscaling Reading Group meeting :
Tamara Salameh (LMD) presents Empirical downscaling of wind speed probability distributions
April 13th 2007, 2.00 PM - Cristina Primo (Université de Reading) Seminar :
Creating probability forecasts of binary events from ensemble predictions and prior information - A Comparison of Methods.
March 21st 2007, 2.30-3.30 PM - Extreme Values Reading Group meeting :
Christian Schölzel (LSCE) presents A fundamental probability distribution for heavy rainfall
March 14th 2007, 2.30-3.30 PM - Jean-Jacques Boreux (Dépt des Sciences et Gestion de l'Environnement, Univ. de Liège) Seminar :
Un modèle statistique paramétrique bayésien, impliquant des variables latentes dans une structure hiérarchique, extrait un signal commun des anneaux annuels de croissance d'une population d'épinettes noires (Picea mariana).
January 30th 2007, 2.30-3.45 PM - Extreme Values Reading Group meeting :
Henning Rust presents Confidence Intervals for flood return levels estimates using a bootstrap approach
March 1st 2007 - Call for post-doctoral position at INRIA (in collaboration with LMD):
Development of downscaling methodologies applied to wind. Closed.
January 19th 2007, 11.00 AM - Eric Parent (INRA/AgoParisTech) Seminar :
Risk evaluation under situation of climatic change: an impossible mission?
January 15th 2007, 11.15-12.30 AM - Extreme Values Reading Group meeting :
Julie Carreau presents A Hybrid Pareto Model for Asymmetric Fat-Tail Data
December 15th 2006, 2.00 PM - Marc Bocquet (CEREA) Seminar :
Advanced inverse modeling and data assimilation for atmospheric tracers: validation on ETEX and Tchernobyl
December 11th (morning) - december 13th 2006 (12h) - Pascal Yiou & Philippe Naveau Course :
Time series analysis
November 29th - JOB ANNOUNCEMENT - Two-year post-doctoral position :
Statistical merging of geophysical data and downscaling of extremes
October 5th 2006, 2.30 PM - Richard W. Katz (NCAR, Boulder) Seminar :
Bayesian approach to decision making using ensemble weather forecasts
September 28th 2006, 2.30 PM - Petra Friedrichs (Meteorological Institute University of Bonn) Seminar :
Statistical down-scaling of extreme precipitation events using censored quantile regression & extreme value theory
April 14th - May 12th 2006 - Olivier Talagrand Lectures :
Numerical modeling of atmospheric flow and data assimilation

Events related to SAMA topics

October 5th-9th 2009 - 5th WMO International Symposium on Data Assimilation, Melbourne, Australia
July 7th-17th 2009 - JCSDA Summer Colloquium on Data Assimilation, Stevenson, Washington, USA
June 22nd-26th 2009 - 6th Conference on Extreme Value Analysis, Fort Collins, Colorado, USA
June 23rd-26th 2008 - ANR Assimilex Lecture & Workshop on Extremes :
Statistical modeling of extremes in data assimilation and filtering approaches
June 9th-10th 2008 - 7th Spatial Econometrics and Statistics Workshop :
State of the art, future challenges and opportunities in the fields of spatial econometrics and statistics
28th april-10 may 2008 - ENVI-STAT Summer School "Statistical Modeling and environnement" , organized by Institut de Recherche pour le Développement in Senegal
April 13rd-18th 2008 - 2008 General Assembly of the European Geosciences Union
with a Data assimilation in the presence of nonlinearities session
November 15th-16th 2007 - Sixth European Workshop on Automatic Differentiation :
Theoretical developments and applications of Automatic Differentiation (AD) and adjoint methods
September 3rd - 12th 2007 - E2C2-GIACS Advanced School :
Extreme events: Nonlinear dynamics and time series analysis.
July 23rd - 27th 2007 - 5th Conference on Extreme Value Analysis :
Probabilistic and statistical models and their applications
October 2nd 2006, 10.30AM - Narta Nogaj (LSCE) Thesis Defence :
Statistical diagnostics of climatic variability around North Atlantic
July 31st - August 11th 2006 - 3rd ENVISAT Summer School :
Earth system monitoring & modelling
June 27th - July 7th 2006 - CEA-EDF-INRIA Numerical Analysis Summer School:
Data assimilation in numerical simulations (Link to next summer school site)

Contacts

David Cugnet ()
Philippe Naveau ()