Research
HiRO-ACEv2 simulates extreme weather at 3km for 1/300th cost
Hugging Face Bloghigh confidence
Why it matters
- →Reduces computational cost of high-resolution climate simulation by two orders of magnitude.
- →Enables generation of long-term (10+ year) extreme weather scenarios previously too expensive to run.
- →Improves accuracy of AI-generated hurricane structures and rare event statistics compared to prior versions.
Anyscale has released HiRO-ACEv2, an updated AI climate emulator capable of generating global 3 km resolution weather data at approximately 1/300th the cost of explicit atmospheric models like X-SHiELD. The system combines a coarse 100 km ACE model with a new HiROv2 downscaler that predicts multiple high-resolution fields simultaneously, improving accuracy for extreme events like hurricanes and intense rainfall to within 3% of target simulations. Models are available for download via Hugging Face with tutorial notebooks, alongside a web demo for visual comparison against traditional simulation outputs.
Read originalThe story around this
Earlier coverage that leads up to this article, and what followed. Lines connect each piece to the closest one after it, converging here.
How we got here
- 1Microsoft Releases Aurora 1.5 for Weather Forecasting
Microsoft Research · July 9, 2026 · Background
- 2AI Model WeatherNext Enhances Cyclone Forecasting
Google DeepMind · August 6, 2026 · Background
- 3DeepMind AI Predicts Hurricanes with Unprecedented Accuracy
WIRED AI · August 6, 2026 · Background
- 4MIT Develops Tool for Predicting Extreme Events
MIT News AI · August 24, 2026 · Background
- 5MIT AI predicts extreme weather without past data
AI News · August 25, 2026 · Background
- 6Google Unveils AI Model for Enhanced Weather Forecasting
TechCrunch AI · September 3, 2026 · Background
- 7Google DeepMind Unveils WeatherNext 3 AI Model
Google DeepMind · September 3, 2026 · Background
- 8AI model doubles subseasonal weather forecast accuracy
MIT News AI · October 14, 2026 · Background
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