West Africa Coastal Vulnerability Mapping: GPW Version 4 Population Growth, Preliminary Release 1, 2000-2010

The West Africa Coastal Vulnerability Mapping: GPW Version 4 Population Growth, Preliminary Release 1, 2000-2010, represents positive or negative growth in the number of persons per grid cell, and was calculated by subtracting an unreleased working version of the Gridded Population of the World (GPW), Version 4, year 2000 population count raster for the West Africa region from an unreleased working version of the GPWv4 year 2010 population count 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 needed to demonstrate the spatial relationship of human populations and the environment globally. 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.

《西非沿海脆弱性制图：GPW 版本 4 人口增长，初步发布 1，2000-2010》代表了每个网格单元人口数量的正负增长，通过从未发布的 GPW（全球人口网格）版本 4，2000 年西非区域的人口计数栅格数据减去未发布的 GPWv4 年 2010 年人口计数栅格数据，并将结果裁剪至距海岸线 200 公里范围内计算得出。GPW 提供了全球范围内一致且空间上明确的人类人口信息及数据，用于研究、政策制定和沟通。这是一款栅格（栅格）数据产品，能够以所需的尺度与范围展示全球人口数据，从而体现人类人口与全球环境的空间关系。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 的原生网格单元分辨率为 30 弧秒，或大约赤道处的 1 公里。