Ai2 Introduces HiRO-ACEv2 for Global 3 km Climate Data

Ai2 introduced HiRO-ACEv2, an updated climate emulator that it says generates global rain, wind, and pressure data at 3 km resolution for about 1/300th the cost of X-SHiELD; downloadable models, tutorial notebooks, and a web demo are available. Given coarsened data from X-SHiELD, Ai2 says the system’s HiROv2 downscaling model reproduces high-resolution statistics to within 3%, including for extreme events occurring once in a million data points. Its scope remains tied to that training simulation: HiRO works only with the version of ACE tuned to match X-SHiELD and cannot yet generate high-resolution data for other climates. The web demo shows pre-generated precipitation, wind, and sea-level pressure outputs from HiROv1 and HiROv2 alongside X-SHiELD output.

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