{
  "id": 14490000,
  "title": "HiRO-ACEv2: Simulating extreme weather at 3 km resolution for a fraction of the cost",
  "url": "https://urgent.news/2026/10/14/hiro-acev2-simulating-extreme-weather-at-3-km-resolution-for-a",
  "topic": "ai",
  "section": "AI",
  "published": "2026-10-14T16:12:42.000Z",
  "source": {
    "name": "Hugging Face",
    "slug": "hugging-face",
    "url": "https://huggingface.co/blog/allenai/hiro-acev2"
  },
  "original_language": "en",
  "account": "Introducing HiRO-ACEv2, an advanced system that can generate high-resolution 3 km climate data at a fraction of the cost of other models. This update to the High Resolution Output Ai2 Climate Emulator (HiRO-ACE) system improves the accuracy of predicting rare weather phenomena like extreme rain, wind, and pressure events. HiRO-ACEv2 achieves this by combining ACE, an AI model that operates at a coarser 100 km resolution, with HiROv2, a downscaling model that can now predict multiple high-resolution fields simultaneously. The new HiROv2 model has been trained to reproduce intense weather events with high accuracy, matching high-resolution statistics to within 3% even for rare events. It also estimates tropical cyclone energy accurately and generates hurricanes with realistic structures. When used in conjunction with an updated version of ACE, HiRO-ACEv2 can generate a full year of global 3 km data, closely matching the statistics of the high-resolution X-SHiELD model. This system offers a cost-effective way for researchers to produce high-resolution data for extreme weather events, with potential savings of over a hundred times when focusing on a specific region. The team is also working on a faster version of HiROv2 and plans to expand its capabilities to handle different climates and additional weather variables like temperature and snow.",
  "summary": null,
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}