Ai2发布HiRO-ACEv2高分辨率气候模拟系统
Ai2发布HiRO-ACEv2,这是其高分辨率输出气候模拟器HiRO-ACE的最新版本,由100公里分辨率的ACE模型与负责细化到3公里的HiRO降尺度模型组成。新版HiROv2最大的变化是可同时预测降水、风、气压等多个高分辨率场,并在极端事件上更准确;Ai2称在给定粗化的X-SHiELD数据时,其高分辨率统计量与目标模拟的偏差在3%以内,连百万分之一量级的罕见事件也是如此。Ai2还重新训练了ACE,并称用两者组合生成了一整年全球3公里数据,统计上与X-SHiELD接近;但HiRO目前只能配合与X-SHiELD匹配的ACE版本,尚不能用于更暖未来或ERA5等历史气候。
Ai2称,用HiRO-ACEv2生成全球高分辨率数据的成本约为运行X-SHiELD的1/300,且模型可下载并提供教程笔记本与在线演示。
HiRO-ACEv2: Simulating extreme weather at 3 km resolution for a fraction of the cost
October 14, 2026
Ai2
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We introduce HiRO-ACEv2, the newest update to our High Resolution Output Ai2 Climate Emulator (HiRO-ACE) system. HiROv2 can reproduce even extremely rare rain, wind, and pressure events with high accuracy, while the full system can generate global 3 km climate data at about 1/300th the cost of X-SHiELD, a high-resolution global atmospheric model that explicitly simulates storms and other small-scale weather.