ECMWF AIFS — AI Forecast System

ECMWF's AI-emulator forecast based on graph-neural-network architecture (operational 2024+). 0.25-degree global, twice-daily cycles, 15-day horizon. Comparable or better skill than IFS at lower compute cost. Free access via ECMWF Open Data; CDS for full archive.

ProviderECMWF
Delivery modestream
CNR score78
CadencePT12H
Originhttps://www.ecmwf.int/en/about/media-centre/aifs-blog