Country Trends in Major Air Pollutants

The Country Trends in Major Air Pollutants data set is a framework of public-health-focused air quality indicators that quantifies over 200 countries' trends in exposure to Particulate Matter (PM2.5), Ozone (O3), Nitrogen Oxides (NOx), Sulfur Dioxide (SO2), Carbon Monoxide (CO), and Volatile Organic Compounds (VOCs). Pollutant concentration data are derived from the European Centre for Medium-Range Weather Forecasts (ECMWF) Atmospheric Composition Reanalysis 4 (EAC4) data sets, freely available from the Copernicus Atmospheric Monitoring Services' Atmospheric Data Store (https://ads.atmosphere.copernicus.eu). CIESIN's Gridded Population of the World, Version 4 (GPWv4): Population Count Adjusted to Match 2015 Revision of UN WPP Country Totals, Revision 11 was used in the population weighting algorithm.
To provide a framework of public-health-focused air quality indicators that quantifies country trends in exposure to major air pollutants.

主要大气污染物国家趋势数据集是一套面向公共卫生的空气质量指标框架，可量化全球200余个国家在细颗粒物（PM2.5）、臭氧（O₃）、氮氧化物（NOₓ）、二氧化硫（SO₂）、一氧化碳（CO）以及挥发性有机物（VOCs）暴露情况的变化趋势。该数据集的污染物浓度数据源自欧洲中期天气预报中心（European Centre for Medium-Range Weather Forecasts, ECMWF）大气成分再分析第4版（EAC4）数据集，该数据集可通过哥白尼大气监测服务的大气数据存储库（https://ads.atmosphere.copernicus.eu）免费获取。人口加权算法采用了国际地球科学信息网络中心（CIESIN）发布的《世界栅格人口第4版（GPWv4）：调整人口数以匹配联合国世界人口展望2015修订版国家总人口》修订版11。本数据集旨在构建一套面向公共卫生的空气质量指标框架，以量化全球各国主要大气污染物暴露情况的变化趋势。