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SamudrACE-E3SMv3

Warning

This page was written in November 2026 and may be out of date. When in doubt, check the paper and release page.

A stochastic coupled emulator of the atmosphere, ocean, and sea ice, released by Ai2. It was trained on the E3SMv3 preindustrial control simulation. The atmosphere takes 6-hour steps and the ocean takes 5-day steps.

  • Paper: Wu et al. 2026
  • Architecture: A stochastic spherical Fourier neural operator (SFNO) for the atmosphere (ACE2S), coupled to a ConvNeXt U-Net for the ocean (Samudra)
  • Grid: 1° Gaussian grid (180×360) for both the atmosphere and the ocean
  • Release: Hugging Face
  • Code: ACE repository
  • Training data: E3SM Data Docs

To get started, visit the ACE coupled model documentation.