A Unified Neural Background‐Error Covariance Model for Midlatitude and Tropical Atmospheric Data Assimilation

Abstract Estimating and modeling background‐error covariances remains a core challenge in variational data assimilation (DA). Operational systems typically approximate these covariances by transformations that separate geostrophically balanced components from unbalanced inertia‐gravity modes—an appr...

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Principais autores:	Boštjan Melinc, Uroš Perkan, Žiga Zaplotnik
Formato:	Artigo
Idioma:	Inglês
Publicado em:	American Geophysical Union (AGU) 2026-01-01
Colecção:	Journal of Advances in Modeling Earth Systems
Assuntos:	variational data assimilation background‐error covariances atmospheric balances tropical data assimilation neural network data assimilation latent space
Acesso em linha:	https://doi.org/10.1029/2025MS005360
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