Author

Christian Donner

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Preprint Oct 2026

Observation Assimilation Transformer: Probabilistic Weather Analysis from Sparse Station Observations

We present the Observation Assimilation Transformer (OAT), a geometry-aware neural process that corrects and refines a prior numerical weather prediction (NWP) field into a high-resolution posterior field by assimilating sparse observations. OAT is an encoder-decoder transformer that considers a set of observed locatio...

Christian Donner, Michele Cattaneo, M. Samarin et al. · 0 citations

Open access Aug 2026

CoDiT: conditional diffusion models for multi-day ocean drifter trajectory prediction

This work frames trajectory prediction as a denoising task and presents Conditional Diffusion models for Trajectories (CoDiT), which adapts the denoising diffusion framework, originally developed for image synthesis, to the problem of trajectory forecasting.

Christian Donner, Shirin Goshtasbpour, Emanuele Dalsasso et al. · Machine Learning: Earth · 0 citations