ECMWF ยท Happened in AI https://happenedinai.com/company/ecmwf/ Happened in AI helps you understand the important AI developments worldwide in under five minutes, then gives you the original evidence and context to go deeper. en Wed, 21 Oct 2026 23:06:17 GMT Machine-learning correction improves two-to-six-week weather forecasts in Nature study https://happenedinai.com/story/science-ai-subseasonal-weather-forecasts/ https://happenedinai.com/story/science-ai-subseasonal-weather-forecasts/ Wed, 21 Oct 2026 22:06:00 GMT Research watch Science A Nature paper reports that a machine-learning method that corrects systematic errors in ECMWF forecasts improves skill two to six weeks ahead, where forecasts are weakest. Skill at that range remains modest even after correction.