Definition: The "ECMWF" acronym stands for the European Centre for Medium-Range Weather Forecasting, which was created by UNESCO as part of the Millennium Project to promote climate change research and knowledge exchange globally. It's a division of the European Space Agency, working closely with other countries on weather prediction, forecasting, and monitoring activities. The term "ECMWF" is used in many areas of scientific and technical work, including weather satellites, atmospheric modeling, and climate science.