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：世界网格人口数据库（Gridded Population of the World, GPW）第4版人口增长（初步版本1，2000-2010年），该数据集表征每个网格单元内的人口数量增减变化，其计算方式为：使用未公开的GPW第4版2010年西非区域人口计数栅格（raster）数据，减去同期未公开的GPW第4版2000年西非区域人口计数栅格数据，随后将计算结果裁剪至沿海200公里范围内。世界网格人口数据库（GPW）提供全球一致且空间显式的人口信息与数据，可应用于科研、政策制定与传播工作。本数据集为栅格（raster）数据产品，能够按照展示全球人口与环境空间关系所需的尺度与范围呈现全球人口数据。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。GPW第4版的原生网格单元分辨率为30角秒，在赤道处约合1公里。