Aggestam, FilipLipponen, AnnukkaMangalagiu, DianaVardon, MichaelWehn, Uta2022-06-211462-9011http://hdl.handle.net/1885/267418A vast amount of environmental data on the state of Europe’s environment, trends, pressures and drivers is being collected by institutions such as the statistical office of the European Union (EUROSTAT), the European Environment Information and Observation Network (Eionet) and the Group on Earth Observations (GEO).application/pdfen-AU© 2020 The authorsIntroduction to the special issue on a Shared Environmental Information System (SEIS) for evidence-based policymaking202010.1016/j.envsci.2020.07.0162021-03-07