West Africa Coastal Vulnerability Mapping: GPW Version 4 Population Density, Preliminary Release 1, 2010

The West Africa Coastal Vulnerability Mapping: GPW Version 4 Population Density, Preliminary Release 1, 2010, represents the number of persons per square kilometer, and was calculated by dividing an unreleased working version of the Gridded Population of the World (GPW), Version 4, year 2010 population count raster for the West Africa region by a land area raster and cropping the result to within 200 kilometers of the coast. GPW provides globally consistent and spatially explicit human population information and data for use in research, policy making, and communications. This is a gridded (raster) data product that renders global population data at the scale and extent required to demonstrate the spatial relationship of human populations and the environment across the globe. The gridded data set is constructed from national or subnational input Units (usually administrative Units) of varying resolutions. The native grid cell resolution of GPWv4 is 30 arc-second, or ~1 km at the equator.

《西非海岸脆弱性制图：全球人口网格（GPW）版本4人口密度，初步发布1，2010年版》展现了每平方公里的人口数量，该数据通过将未公开发布的全球人口网格（GPW）版本4，2010年西非地区的人口计数栅格数据与土地面积栅格数据相除并裁剪至海岸线200公里范围内而得。GPW提供全球一致且空间详尽的人类人口信息及数据，供研究、政策制定和沟通之用。本数据产品为栅格（栅格）数据集，以全球人口数据所需的尺度和范围，展现了人类人口与环境在全球范围内的空间关系。该栅格数据集由不同分辨率的国家级或次国家级输入单元（通常为行政单元）构建而成。GPWv4的原始栅格单元格分辨率为30弧秒，即赤道附近约为1公里。