In addition to the affected population, the GFM product also provides an output layer highlighting the Affected land cover for a particular flood case. This information can provide a first assessment of affected land cover or land use types, e.g., how much agricultural area is affected by the flood extent.
Based on the GFM consortium’s land cover production heritage and experience, this output layer is derived from the 100m-resolution database from the Copernicus Global Land Cover Service enriched with information from the Copernicus Pan-European High-Resolution Layers (i.e., Imperviousness, Forests, Grassland, Water & Wetness) over Europe.
The Global Land Service includes 23 classes and provides annual updates, the overall accuracy of this dataset is 80%. The Copernicus Pan-European High-Resolution Layers have an overall accuracy of 85%+ and are available at 20 m (the 2018 version at 10 m) spatial resolution. In addition to both datasets, we will also include the most relevant classes from OpenStreetMap (OSM) (e.g., roads, railways, etc.) in order to allow a first assessment of affected areas and infrastructure.
For further information on how the product is generated please check also: https://extwiki.eodc.eu/GFM/PDD/GFMoutputLayers