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Original explanatory diagram

News analysisRelease: July 1, 2025Published: October 24, 20263 min read

ECMWF weather forecasting Models model evaluation

ECMWF put its 51-member AIFS ensemble into operations, with a different resolution trade-off

ECMWF made AIFS ENS operational on July 1, 2025, adding a 51-member machine-learning ensemble beside its IFS ensemble forecast service.

Original explanatory diagram

News analysisRelease: February 25, 2025Published: October 24, 20263 min read

ECMWF weather forecasting Models open science

ECMWF put AIFS Single into operations alongside its physics forecast system

ECMWF made its deterministic AIFS Single forecast operational on February 25, 2025, placing the machine-learning forecast beside its established IFS service.