Presenters
Simon Lang, Senior Scientist in the Earth System Modeling Section
Maartje Kuilman, Analyst in User Services Section
Description
On Tuesday 1 July 2025, the first version of the Artificial Intelligence Forecasting System (AIFS) Ensemble model will be released and supported operationally. This release marks another milestone in ECMWF history, as AIFS ENS v1 will be the first AIFS ensemble model to be made fully operational.
AIFS ENS, v1 model will not be an upgrade of currently experimental diffusion AIFS ENS model. It is a first version of a new model that is trained using a version of the Continuous Ranked Probability Score (CRPS), a loss function that helps ensure the forecasts are both accurate and well-calibrated.
In addition to operationalisation of AIFS ENS, v1 will bring several new data and graphical probabilistic prodcuts available in the EMCWF Open charts platform.
In this webinar Simon Lang, Senior Scientist in the Earth System Modeling Section, introduced AIFS ENS v1 model and its performance, and Maartje Kuilman, Analyst in User Services Section presented available data and products and the ways to obtain them. The presentation was be followed by a Q&A session.
This webinar took place on Tuesday, 24 June 2025; 10:00-11:00 BST.
A recording of the webinar is now available from the Implementation of AIFS ENS v1 page.