The dataset is available to download in Geotiff format at a resolution of 3 arc-second (approximately 100m at the equator). The projection is Geographic Coordinate System, WGS84. Grid cell values represent incremental, globally unique, numerical identifiers for the highest-level, temporally-harmonized, subnational units associated with the population counts obtained for each country and territory (with zeroes globally identifying inland waterbodies within each subnational unit).Data Source: Global national level input population data-summaryMethodology: Lloyd, C. T., H. Chamberlain, D. Kerr, G. Yetman, L. Pistolesi, F. R. Stevens, A. E. Gaughan, J. J. Nieves, G. Hornby, K. MacManus, P. Sinha, M. Bondarenko, A. Sorichetta, and A. J. Tatem, 2019. “Global Spatio-temporally Harmonised Datasets for Producing High-resolution Gridded Population Distribution Datasets”. Big Earth Data (https://doi.org/10.1080/20964471.2019.1625151).