Ministry of Education Key Laboratory for Earth System Modelling, Department of Earth System Science, Tsinghua University, Beijing 100084, China; Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, USA.
Department of Geography and Resource Management, The Chinese University of Hong Kong, Shatin, Hong Kong.
Environ Pollut. 2018 Jul;238:874-883. doi: 10.1016/j.envpol.2018.03.093. Epub 2018 Apr 6.
Air pollution, being especially severe in the fast-growing developing world, continues to post a threat to public health. Yet, few studies are capable of quantifying well how different groups of people in different places experience different levels of air pollution at the global scale. In this paper, we use worldwide Chinese as a lens to quantify the spatiotemporal variations and geographic differences in PM exposures using unprecedented mobile phone big data and air pollution records. The results show that Chinese in South and East Asia suffer relatively serious PM exposures, where the Chinese in China have the highest PM exposures (52.8 μg/m/year), which is fourfold higher than the exposures in the United States (10.7 μg/m/year). Overall, the Chinese in Asian cities (35.5 μg/m/year) experienced the most serious PM exposures when compared with the Chinese in the cities of other continents. These results, partly presented as a spatiotemporally explicit map of PM exposures for worldwide Chinese, help researchers and governments to consider how to address the effects of air pollution on public health with respect to different population groups and geographic locations.
空气污染在快速发展的发展中国家尤为严重，继续对公众健康构成威胁。然而，很少有研究能够很好地量化不同地方的不同人群在全球范围内经历不同水平的空气污染的情况。在本文中，我们使用全球华人作为一个视角，利用前所未有的移动电话大数据和空气污染记录来量化 PM 暴露的时空变化和地理差异。研究结果表明，南亚和东亚的华人受到相对严重的 PM 暴露，其中中国的华人 PM 暴露最高（52.8μg/m/年），是美国（10.7μg/m/年）的四倍。总体而言，与其他大洲城市的华人相比，亚洲城市的华人（35.5μg/m/年）经历了最严重的 PM 暴露。这些结果部分以全球华人 PM 暴露的时空明确地图呈现，有助于研究人员和政府考虑如何针对不同人群和地理位置解决空气污染对公众健康的影响。
