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2 documents correspondants.

Prépublication · 2026 arXiv EN

Covariance-Informed Ensemble Score Filtering: Embedding Localized Covariance Geometry into Score-Based Transport

Background-error covariance models are central to atmospheric data assimilation because they spread partial observational information across space, variables, and dynamically coupled scales. Ensemble and variational methods exploit this covariance geometry eff...

Siming Liang, Peter Jan van Leeuwen et al. #math.NA

Prépublication · 2026 arXiv EN

Entropy-Stable and Well-Balanced Discontinuous Galerkin Methods for the Compressible Euler Equations in Vector-Invariant Form

We develop structure-preserving methods for the compressible Euler equations with gravity in vector-invariant form and potential temperature as a prognostic variable within the flux-differencing discontinuous Galerkin spectral element method (DGSEM) framework....

Marco Artiano, Kieran Ricardo et al. #math.NA