The Copernicus Climate Change Service (C3S) is one of six thematic services under the European Union's Copernicus Programme. Managed by the European Commission, the Copernicus Programme's C3S is operated by the European Centre for Medium-Range Weather Forecasts (ECMWF). The primary goal of the Copernicus Climate Change Service is to establish a comprehensive EU knowledge base to support policies aimed at mitigating and adapting to climate change and global warming. C3S provides reliable information on the current and historical state of the climate, seasonal forecasts, and projections for the coming decades based on various greenhouse gas emission scenarios and other climate change factors.

Copernicus Climate Change Service - Wikipedia