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Assimilation de données variationnelle pour des modèles d'hydrolique fluviale

Igor Gejadze , Marc Honnorat , Jerome Monnier , Francois-Xavier Le Dimet
Colloque national sur l'assimilation de données, 2006, Toulouse, France
Conference papers inria-00259924v1

On data assimilation for a 1D-net river model with 2D 'zoom' areas

Igor Gejadze , Jerome Monnier
XVI International Conference on Computational Methods for Water Ressources, CMWR XVI., Jun 2006, Copenhagen, Denmark. pp.2071-2078
Conference papers inria-00259918v1

Reduced-space inverse Hessian for analysis error covariances in variational data assimilation

Victor P. Shutyaev , François-Xavier Le Dimet , Igor Yu. Gejadze
Russian Journal of Numerical Analysis and Mathematical Modelling, 2010, 25 (2), pp.169-185. ⟨10.1515/rjnamm.2010.011⟩
Journal articles istex hal-00787295v1

On error covariances in variational data assimilation

Igor Yu Gejadze , François-Xavier Le Dimet , Victor P. Shutyaev
Russian Journal of Numerical Analysis and Mathematical Modelling, 2007, 22 (2), pp.163-175. ⟨10.1515/RJNAMM.2007.008⟩
Journal articles istex inria-00391900v1
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Optimal solution error quantification in variational data assimilation involving imperfect models

Victor Shutyaev , Igor Gejadze , Arthur Vidard , Francois-Xavier Le Dimet
International Journal for Numerical Methods in Fluids, 2017, 83 (3), pp.276-290. ⟨10.1002/fld.4266⟩
Journal articles hal-01411666v1
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Hessian-based covariance approximations in variational data assimilation

Igor Yu. Gejadze , Victor P. Shutyaev , François-Xavier Le Dimet
Russian Journal of Numerical Analysis and Mathematical Modelling, 2018, 33 (1), pp.25-39. ⟨10.1515/rnam-2018-0003⟩
Journal articles hal-02068763v1

Posterior covariances of optimal solution errors in variational data assimilation

Victor P. Shutyaev , François-Xavier Le Dimet , Igor Yu. Gejadze
IP:M&S 2010 - 5th International Conference "Inverse Problems: Modeling and Simulation", May 2010, Antalya, Turkey. pp.82-83
Conference papers hal-00787277v1

Analysis error via Hessian in variational data assimilation

François-Xavier Le Dimet , Victor P. Shutyaev , Igor Yu Gejadze
CARI 2006 - Conférence Africaine sur la Recherche en Informatique et Mathématiques Appliquées, Nov 2006, Cotonou, Benin
Conference papers inria-00391907v1

Error Propagation in Variational Data Assimilation

François-Xavier Le Dimet , M.Yussuf Hussaini , David Furbish , Igor Yu. Gejadze , Victor P. Shutyaev et al.
ECODYC 2010 - Exploring Complex Dynamics in High-Dimensional Chaotic Systems: From Weather Forecasting to Oceanic Flows, Jan 2010, Dresde, Germany
Conference papers hal-00787278v1

On optimal solution error covariances in variational data assimilation

François-Xavier Le Dimet , Victor P. Shutyaev , Igor Yu. Gejadze
European Geophysical Union General Assembly, Apr 2006, Vienne, Austria
Conference papers hal-00171658v1

Prediction and error propagation for geophysical fluids

François-Xavier Le Dimet , Victor P. Shutyaev , Igor Yu Gejadze
Num Coop09 - Numerical methods and North-South Cooperation, Mar 2009, Yaoundé, Cameroon
Conference papers inria-00391874v1

A joint data assimilation coupling algorithm applied to shallow-water flood models

Igor Gejadze , Jerome Monnier
European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2006., 2006, Egmond aan Zee, Netherlands. pp.3101-3108
Conference papers inria-00259923v1

Assimilation de données variationnelle pour des modèles d'hydrolique fluviale

Igor Yu. Gejadze , Marc Honnorat , Jerome Monnier , François-Xavier Le Dimet
Colloque national sur l'assimilation de données, May 2006, Toulouse, France
Conference papers hal-00171643v1

Data Assimilation : A Global Approach For Geophysical Fluids

François-Xavier Le Dimet , Victor P. Shutyaev , Igor Yu Gejadze
5ICIP - 5th International Conference Inverse Problems: Identification, Design and Control, May 2007, Borodino, Volga River, Russia
Conference papers inria-00391898v1

On analysis error covariances in variational data assimilation

Igor Yu. Gejadze , François-Xavier Le Dimet , Victor P. Shutyaev
SIAM Journal on Scientific Computing, 2008, 30 (4), pp.1847-1874. ⟨10.1137/07068744X⟩
Journal articles inria-00391893v1
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On the use of derivatives in the polynomial chaos based global sensitivity and uncertainty analysis applied to the distributed parameter models

Igor Gejadze , Pierre-Olivier Malaterre , Victor Shutyaev
Journal of Computational Physics, 2019, 381, pp.218-245. ⟨10.1016/j.jcp.2018.12.023⟩
Journal articles hal-02608782v1

Error Propagation and Second Order Information in Variational Data Assimilation

François-Xavier Le Dimet , Igor Yu. Gejadze , Victor P. Shutyaev
AIP 2009 - Applied Inverse Problems Conference, Jul 2009, Vienna, Austria
Conference papers hal-00787272v1

On optimal solution error covariances in variational data assimilation problems

Igor Yu. Gejadze , François-Xavier Le Dimet , Victor P. Shutyaev
Journal of Computational Physics, 2010, 229 (6), pp.2159-2178. ⟨10.1016/j.jcp.2009.11.028⟩
Journal articles hal-00787292v1

On optimal solution error covariances in variational data assimilation

Victor P. Shutyaev , François-Xavier Le Dimet , Igor Yu. Gejadze
Russian Journal of Numerical Analysis and Mathematical Modelling, 2008, 23 (2), pp.197-205. ⟨10.1515/RJNAMM.2008.012⟩
Journal articles istex inria-00391878v1
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On variational data assimilation for 1D and 2D fluvial hydraulics

Igor Gejadze , Marc Honnorat , François-Xavier Le Dimet , Jerome Monnier
European Conference on Mathematics for Industry (14th ECMI), Edts Bonilla-Moscovo-Platero-Vega, Jul 2006, Madrid, Spain. pp.361-365, ⟨10.1007/978-3-540-71992-2_53⟩
Conference papers inria-00259096v1
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On the potential of variational calibration for a fully distributed hydrological model: application on a Mediterranean catchment

Maxime Jay-Allemand , Pierre Javelle , Igor Gejadze , Patrick Arnaud , Pierre-Olivier Malaterre et al.
Hydrology and Earth System Sciences, 2020, 24 (11), pp.5519-5538. ⟨10.5194/hess-24-5519-2020⟩
Journal articles hal-03085942v1

Error Propagation in Variational Data Assimilation

François-Xavier Le Dimet , Igor Yu. Gejadze , Victor P. Shutyaev
AOGS 2010 - 7th Annual Meeting of the Asia Oceania Geophysical Society, Jul 2010, Hyderabad, India
Conference papers hal-00787283v1

Superposition of a local zoom model using optimal control. Application to 1D-2D river flows

Igor Gejadze , Jerome Monnier
Coupled Problems 2007 - 2nd International Conference on Computational Methods for Coupled Problems in Science and Engineering, International Center for Numerical Methods in Engineering (CIMNE), May 2007, Santa Eularia, Ibiza, Spain
Conference papers inria-00259935v1

A posteriori error covariances in variational data assimilation

Victor P. Shutyaev , François-Xavier Le Dimet , Igor Yu Gejadze
Russian Journal of Numerical Analysis and Mathematical Modelling, 2009, 24 (2), pp.161-169. ⟨10.1515/RJNAMM.2009.011⟩
Journal articles inria-00391869v1

On optimal solution error in variational data assimilation: theoretical aspects

François-Xavier Le Dimet , Victor P. Shutyaev , Igor Yu Gejadze
Russian Journal of Numerical Analysis and Mathematical Modelling, 2006, 21 (2), pp.139--152
Journal articles inria-00391910v1
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On model error in variational data assimilation

Victor Shutyaev , Arthur Vidard , François-Xavier Le Dimet , Igor Gejadze
Russian Journal of Numerical Analysis and Mathematical Modelling, 2016, 31 (2), pp.105-113. ⟨10.1515/rnam-2016-0011⟩
Journal articles hal-01309018v1

Optimal Error Covariances in Variational Data Assimilation

Igor Yu. Gejadze , Victor P. Shutyaev , François-Xavier Le Dimet
6th International Conference "Inverse Problems, Modeling and Simulation", May 2012, Izmir, Turkey
Conference papers hal-00788666v1

On optimal solution error in variational data assimilation

François-Xavier Le Dimet , Victor P. Shutyaev , Igor Yu Gejadze
European Geophysical Union, Apr 2007, Vienne, Austria
Conference papers inria-00391902v1

Optimal solution error covariance in highly nonlinear problems of variational data assimilation

Victor P. Shutyaev , Igor Yu. Gejadze , G. Copeland , François-Xavier Le Dimet
Nonlinear Processes in Geophysics, 2012, 19 (2), pp.177-184. ⟨10.5194/npg-19-177-2012⟩
Journal articles hal-00788665v1
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On a 2D zoom for 1D shallow-water model: coupling and data assimilation

Jerome Monnier , Igor Gejadze
Computer Methods in Applied Mechanics and Engineering, 2007, 196 (45-48), pp.4628-4643. ⟨10.1016/j.cma.2007.05.026⟩
Journal articles inria-00256578v1