downscaling

Ai2 released HiRO-ACEv2, an AI climate emulator that it says generates global 3 km data at about 1/300th the cost of the physics-based X-SHiELD model. The new HiROv2 downscaling model predicts multiple fields at once and, per Ai2, matches X-SHiELD statistics to within 3% even for one-in-a-million events.