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

The Gridded Population of the World, Version 3 (GPWv3) consists of estimates of human population for the years 1990, 1995, and 2000 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 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).

全球栅格人口数据集第三版（Gridded Population of the World Version 3，GPWv3）涵盖1990年、1995年与2000年三个年份的人类人口估算数据，数据单元为2.5弧分栅格，同时配套约2000年的关联数据集。该数据集采用比例分配栅格化算法，依托超过30万个国家级与次国家级行政单元，将人口数值分配至各栅格单元。人口计数栅格存储了每个栅格单元的总人口估算值。此类栅格数据支持多种地理信息系统（Geographic Information System, GIS）兼容格式，并覆盖全球、各大洲（不含南极洲）及国家层级等不同地理范围。GPWv3由哥伦比亚大学国际地球科学信息网络中心（Center for International Earth Science Information Network，CIESIN）与国际热带农业中心（Centro Internacional de Agricultura Tropical，CIAT）联合编制。