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AVENUE Project

AVENUE Project 

Variational-Ensemble Data Assimilation

 

 

Project period : September 2014 – September 2017

Coordinators :  Ehouarn Simon (INPT-IRIT), Selime Gürol  (CERFACS)

Partners: CERFACS, INPT-IRIT, MétéoFrance-CNRM, CNES-GET

 

Objectives

  • Stochastic modeling of uncertainties (Initial conditions, models, observations)
  • Large-scale non-linear ensemble estimation
  • HPC algorithms for data assimlation
  • Applications in meteorology,  oceanography and earth’s gravity field

 

Methodologies

  • Development of a variational-ensemble methodologies
  • Probabilistic convergence study for large samples
  • Time-parallel methodologies
  • Covariance filtering

 

Application : Meteorology

  • Météo-France model: global (ARPEGE) and regional (AROME)
  • Strong operational constraints (HPC)
  • Covariance matrix localisation

 

Application: Ocean

  • Low resolution global model (NEMO)  – (1 deg.) and high resolution (1/4 deg)
  • Hybrid formulation of covariances
  • Development of HPC algorithms

 

 

 

 

 

 

Application: geodesy

  • Restitution of the earth’s gravity field on the basis of GRACE satellite measurements
  • Inversion + spectral analysis in large scale
  • Implementation of EnKF filters

 

 

 

 

CALENDAR

Thursday

20

February

2025

🎓Olivier GOUX thesis defense

Thursday 20 February 2025 at 14h00

  JCA room, Cerfacs, Toulouse    

Tuesday

04

March

2025

🎓Francis MEZIAT thesis defense

Tuesday 4 March 2025 at 14h00

  JCA room, Cerfacs, Toulouse    

Monday

10

March

2025

Introduction to programming practices for scientific computing

Monday 10 March 2025 at 14h00

  Training    

ALL EVENTS