Population Count Adjusted to Match 2015 Revision of UN WPP Country Totals, Revision 11 consists of estimates of human population (number of persons per pixel) consistent with national censuses and population registers with respect to relative spatial distribution, but adjusted to match the 2015 Revision of the United Nation's World Population Prospects (UN WPP) country totals for the years 2000, 2005, 2010, 2015, and 2020. A proportional allocation gridding algorithm, utilizing approximately 13.5 million national and sub-national administrative units, was used to assign population counts to 30 arc-second grid cells. The data files were produced as global rasters at 30 arc-second (~1 km at the equator) resolution. The purpose of GPW is to provide a spatially disaggregated population layer that is compatible with data sets from social, economic, and Earth science disciplines, and remote sensing. It provides globally consistent and spatially explicit data for use in research, policy-making, and communications.
File name: gpw-v4-population-count-adjusted-to-2015-unwpp-country-totals-rev11_ yyyy_ 30_ sec_ tif.zip； Usage: After decompression, use Arcgis or ENVI software to open it.
COLUMBIA UNIVERSITY Center for International Earth Science Information Network - CIESIN. (2022). Golbal 1km UN WPP-Adjusted Population Count ,GPWv4.11 (2000, 2005, 2010, 2015, 2020). Upper Yangtze River Scientific Data Center, DOI: https://doi.org/10.7927/H4PN93PB. (Download the reference：
Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.
1.Center for International Earth Science Information Network - CIESIN - Columbia University. 2018. Gridded Population of the World, Version 4 (GPWv4): Population Density Adjusted to Match 2015 Revision UN WPP Country Totals, Revision 11. Palisades, New York: NASA Socioeconomic Data and Applications Center (SEDAC). https://doi.org/10.7927/H4F47M65. Accessed 2022/09/30 (View Details )
2.Doxsey-Whitfield, E., MacManus, K., Adamo, S. B., Pistolesi, L., Squires, J., Borkovska, O., & Baptista, S. R. (2015). Taking advantage of the improved availability of census data: a first look at the gridded population of the world, version 4. Papers in Applied Geography, 1(3), 226-234. (View Details )
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