This presentation was given for a keynote at the FOSS4G 2019 conference in Bucharest, Romania on 29 August 2019.
The talk gives an overview of freely available environmental datasets from the European Centre for Medium-Range Weather Forecasts as part of the Copernicus programme. It covers aspects of open data and the importance of making them not just open, but also accessible and useable. The talk highlights the perspective of a data user trying to work with large volumes of meteorological and climate data.