Observations Thinning In Data Assimilation Computations

Serge Gratton, Monserrat Rincon-Camacho, Ehouarn Simon, Ph Toint

Namur Institute for Complex Systems

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4 Citations
9 Article
2 Working paper
1 Other report

12 results

2021
A data assimilation algorithm for predicting rain
Janjić, T., Ruckstuhl, Y. & Toint, P. L., Apr 2021, In: Quarterly Journal of the Royal Meteorological Society. 147, 736, p. 1949-1963 15 p.
Research output: Contribution to journal › Article › peer-review

Open Access
2018
A note on preconditioning weighted linear least-squares with consequences for weakly constrained variational data assimilation
Gratton, S., Selime, G., Simon, E. & Toint, P., Apr 2018, In: Quarterly Journal of the Royal Meteorological Society. 144, 712, p. 934-940 7 p.
Research output: Contribution to journal › Article › peer-review

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2017
On the use of the saddle formulation in weakly-constrained 4D-VAR data assimilation
Gratton, S., Gürol, S., Simon, E. & Toint, P., 20 Sept 2017, (Submitted) Arxiv.
Research output: Working paper

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19 Downloads (Pure)
2014
Linearizing the Method of Conjugate Gradients
Gratton, S., Titley-Peloquin, D., Toint, P. & Tshimanga Ilunga, J., 2014, In: SIAM Journal on Matrix Analysis and Applications. 35, 1, p. 110-126
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2013
Adaptive Observations And Multilevel Optimization In Data Assimilation
Gratton, S., Rincon-Camacho, M. & Toint, P., 2013, Namur: Namur center for complex systems, 18 p.
Research output: Working paper

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Conjugate gradients versus multigrid solvers for diffusion-based correlation models in data assimilation
Gratton, S., Toint, P. L. & Tshimanga, J., 2013, In: Quarterly Journal of the Royal Meteorological Society. 139, 675, p. 1481-1487 7 p.
Research output: Contribution to journal › Article › peer-review

Open Access
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Derivative-free optimization for large-scale nonlinear data assimilation problems
Gratton, S., Laloyaux, P. & Sartenaer, A., 28 May 2013, (Accepted/In press) In: Quarterly Journal of the Royal Meteorological Society.
Research output: Contribution to journal › Article › peer-review
Preconditioning and globalizing conjugate gradients in dual space for quadratically penalized nonlinear-least squares problems
Gratton, S., Gürol, S. & Toint, P., 2013, In: Computational Optimization and Applications. 54, 1, p. 1-25 25 p.
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2011
A reduced and limited memory preconditioned approach for the 4D-Var data assimilation problem
Gratton, S., Laloyaux, P., Sartenaer, A. & Tshimanga Ilunga, J., 2011, In: Quarterly Journal of the Royal Meteorological Society. 137, p. 452-466 15 p.
Research output: Contribution to journal › Article
Range-space variants and inexact matrix-vector products in Krylov solvers for linear systems arising from inverse problems
Gratton, S., Toint, P. & Tshimanga Ilunga, J., 1 Jan 2011, In: SIAM Journal on Matrix Analysis and Applications. 32, 3, p. 969-986 18 p.
Research output: Contribution to journal › Article › peer-review

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57 Downloads (Pure)
2010
Approximate invariant subspaces and quasi-Newton optimization methods
Gratton, S. & Toint, P. L., 1 Aug 2010, In: Optimization Methods and Software. 25, 4, p. 507-529 23 p.
Research output: Contribution to journal › Article › peer-review

Open Access
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77 Downloads (Pure)
2007

Limited-memory preconditioners with application to incremental four-dimensional variational data assimilation
Tshimanga Ilunga, J., Gratton, S., Weaver, A. T. & Sartenaer, A., 2007, Namur: FUNDP, Faculté des Sciences. Département de Mathématique.
Research output: Book/Report/Journal › Other report

Observations Thinning In Data Assimilation Computations

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