West Africa Coastal Vulnerability Mapping: Subset of DMSP-OLS Nighttime Lights for Economic Activity, 2010

The West Africa Coastal Vulnerability Mapping: Subset of DMSP-OLS Nighttime Lights for Economic Activity, 2010 data set is based on Version 4 of the Defense Meteorological Satellite Program Operational Linescan System (DMSP-OLS) Nighttime Lights Time Series, 2010 annual global composite of radiance lights inter-calibrated to the digital number (DN) values of gain 55 for satellite F16 (2006). These data are commonly used for identifying human settlements and economic activity. The DNs are on a unitless scale ranging from 0 (no light) to 4,000 (greatest light intensity). This data set is a proxy for economic activity within 200 kilometers of the coast of West Africa. The resolution of the grid is 30 arc-second, or approximately 1 km at the equator. The data were provided courtesy of Christopher Elvidge and Kimberly Baugh of the Earth Observation Group, NOAA National Geophysical Data Center (NGDC), where image and data processing were performed.
To provide a measure of economic activity in the coastal zone of West Africa based on nighttime lights.

《西非沿海脆弱性制图：2010年经济活动用DMSP-OLS夜间灯光子集数据集》以美国国防气象卫星计划运行线扫描系统（Defense Meteorological Satellite Program Operational Linescan System, DMSP-OLS）夜间灯光时间序列第4版的2010年全球年度合成辐射灯光数据为基础，该数据已针对F16卫星（2006年）增益55对应的数字值（digital number, DN）完成辐射校正与统一校准。此类数据通常被用于识别人类聚居区与经济活动。DN值采用无量纲刻度，取值范围为0（无灯光）至4000（最大灯光强度）。本数据集可作为西非沿海200公里范围内经济活动的替代指标。其网格分辨率为30角秒，在赤道区域约合1公里。本数据由美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）国家地球物理数据中心（National Geophysical Data Center, NGDC）地球观测小组的Christopher Elvidge与Kimberly Baugh提供，图像及数据处理工作亦由该小组完成。
本数据集旨在基于夜间灯光数据，量化西非沿海区域的经济活动水平。