World Settlement Footprint 2015 (WSF-2015) showing built up areas in Abidjan, Ivory Coast. The animation overlays the WSF-2015 product, derived from Copernicus Sentinel-1 data and US Landsat 8, with WSF-2015 Density, using Landsat 8 images, which indicated the level of imperviousness. The prototypic WSF-Density 2015 provides information regarding the percentage of sealed surface or greenness derives from temporal statistics such as the Normalized Difference Vegetation Index (NDVI). It is calculated globally for all areas assigned as built-up by the WSF-2015 layer.