Copernicus Operational Extreme Event Monitoring and Attribution Service

There are ever increasing demands by society for timely climate attribution information following extreme events, and for inclusion of extreme event attribution within operational climate services. The science supporting routine climate attribution assessments has also progressed substantially in recent years, and there is a landscape of a growing number of providers of such climate intelligence. The Copernicus Climate Change Service (C3S) aims to establish an operational framework for extreme event attribution with a global scope and a European focus. In this presentation the key outcomes from the development phase of this activity will be presented and discussed. The service is building on established methodologies and previous European collaborations, combining scientific, operational and communication expertise from across a number of institutions, to produce a flexible and portable operational extreme event service based on multiple attribution methods and mature science. In this presentation we will present and discuss key outputs and lessons learned during the development phase of this as an operational climate attribution service.

The key outputs include:

• Interactive Web Application – A tool for exploring trends in extreme events and their links to climate change through maps, time series, and statistical analyses.
• Extreme Event Attribution Office – A distributed office across four European meteorological services, in collaboration with ECMWF, delivering rapid climate attribution assessments.
• Rapid Attribution Studies – Production of factsheets within five business days of an event, with extended analyses for longer-term events.
• Counter-Factual Weather Data – Development of alternative climate scenarios using advanced dynamical models.
• Communication Products – User documentation, visualisation guidance, training materials, and peer-reviewed scientific reports.