Annual layers of European Ecosystem land units (ELU) from 2000 to 2018 at 100 m are provided. Ecosystems, in this context are defined as intersections between macroclimatic conditions, landform, land cover and areal extent. The thematic legend of land cover is consistent with European Ecosystem Accounting, with the layers providing auxiliary information. Further, the underlying land cover time series is fully consistent with the Corine Accounting standard. --- Usage: Provided are gridded and categorical geoTiffs that can be loaded into any common Graphical Information System. Owing to the large number of classes different types of colour legends are supplied (in file colourlegends.zip). To visualize, download the tiffs, place the legend files in the same folder as the geotiff files and then open in QGIS.Additionally, the same layers are also provided as colour-coded cloud-optimized geotiff files. These files can be visualized in QGIS and other software without the accompanied legend files. Note that these files have no class id or label and purely for visual display. File structure: ELU_YYYY_100m.tif Full layer for a given year YYYY [2000,2018] in COG format. ELU_YYYY_100m_colorcoded.tif Full color-coded layer for a given year YYYY [2000,2018] in COG format. colourlegends.zip Zipped file with thematic legends in QML and CLR format. Can be used for example in QGIS. Data properties: File format Cloud-optimized geotiff (COG) Thematic resolution 540 classes Spatial grain 100 m² Geographic projection LAEA Europe (EPSG: 3035) Temporal grain Annual Spatial extent Continental Europe (see screenshot) Temporal extent 2000 to 2018 Reusability:The integrated maps are provided under a CC-BY 4.0 License. All files are provided as is and the authors take no responsibility for errors, or misuse and misinterpretation. .