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A. Koldunov

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#machine learning Preprint Sep 2026

HClimRep-Ocean: A Global Ocean Emulator on an Unstructured Mesh

HlimRep-Ocean is presented, an ocean emulator that operates directly on the native unstructured mesh of FESOM2, and achieves the lowest RMSE against GLORYS reanalysis among all assessed systems, confirming the competitiveness of the native-mesh approach.

K. Nowak, A. Koldunov, Nikolay Koldunov et al. · 0 citations
Preprint Aug 2026

FESOM2-JAX v1.0: a differentiable shadow of the ocean-sea-ice model FESOM2, cast onto GPUs

We present FESOM2-JAX, a Python re-implementation of the Finite-volumE Sea ice-Ocean Model (FESOM2) in JAX. The model retains the unstructured-mesh, cell-vertex finite-volume formulation of the original, runs unchanged from a laptop CPU to 256 GPUs, and is end-to-end differentiable. FESOM2-JAX is a code shadow of the F...

Nikolay Koldunov, S. Danilov, S. Cheedela et al. · 1 citation

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