Gridded Population of the World, Version 3 (GPWv3): Population Count Grid, Future Estimates

The Gridded Population of the World, Version 3 (GPWv3): Population Count Grid, Future Estimates consists of estimates of human population for the years 2005, 2010, and 2015 by 2.5 arc-minute grid cells and associated data sets dated circa 2000. A proportional allocation gridding algorithm, utilizing more than 300,000 national and sub-national administrative Units, is used to assign population values to grid cells. The population counts that the grids are derived from are extrapolated based on a combination of subnational growth rates from census dates and national growth rates from United Nations statistics. All of the grids have been adjusted to match United Nations national level population estimates. The population count grids contain estimates of the number of persons per grid cell. The grids are available in various GIS-compatible data formats and geographic extents (global, continent [Antarctica not included], and country levels). GPWv3 is produced by the Columbia University Center for International Earth Science Information Network (CIESIN) in collaboration with Centro Internacional de Agricultura Tropical (CIAT).

《世界网格人口数据集》第三版（GPWv3）：人口计数网格，未来估计数据集，包含了2005年、2010年和2015年的人口估计数据，以2.5弧分网格为单元，并附有大约2000年的相关数据集。本数据集采用一种比例分配网格算法，该算法利用超过30万个国家和次国家级行政单元，将人口值分配到网格单元中。网格中的人口计数是基于从普查日期获取的次国家增长率以及从联合国统计数据中获取的国家增长率进行外推得出的。所有网格均已调整以与联合国国家层面的人口估计相匹配。人口计数网格包含了每个网格单元中人数的估计值。这些网格数据以多种地理信息系统兼容的数据格式和地理范围（全球、洲际[不包括南极洲]和国家级）提供。GPWv3由哥伦比亚大学国际地球科学信息网络中心（CIESIN）与国际热带农业研究中心（CIAT）合作生产。