For more information on the Global 1-km Downscaled Urban Land Extent Projection and Base Year Grids by SSP Scenarios, v1 (2000 – 2100) data see the following peer-reviewed open access journal article:
Gao, J. and M. Pesaresi. 2021. Downscaling SSP-consistent global spatial urban land projections from 1/8-degree to 1-km resolution 2000-2100. Scientific Data 8(1): 281. https://doi.org/10.1038/s41597-021-01052-0.
Please see the readme text file for more information.