Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2006853117 |
COVID-19 lockdowns cause global air pollution declines | |
Zander S. Venter; Kristin Aunan; Sourangsu Chowdhury; Jos Lelieveld | |
2020-07-28 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2020 |
英文摘要 | The lockdown response to coronavirus disease 2019 (COVID-19) has caused an unprecedented reduction in global economic and transport activity. We test the hypothesis that this has reduced tropospheric and ground-level air pollution concentrations, using satellite data and a network of >10,000 air quality stations. After accounting for the effects of meteorological variability, we find declines in the population-weighted concentration of ground-level nitrogen dioxide (NO2: 60% with 95% CI 48 to 72%), and fine particulate matter (PM2.5: 31%; 95% CI: 17 to 45%), with marginal increases in ozone (O3: 4%; 95% CI: −2 to 10%) in 34 countries during lockdown dates up until 15 May. Except for ozone, satellite measurements of the troposphere indicate much smaller reductions, highlighting the spatial variability of pollutant anomalies attributable to complex NOx chemistry and long-distance transport of fine particulate matter with a diameter less than 2.5 µm (PM2.5). By leveraging Google and Apple mobility data, we find empirical evidence for a link between global vehicle transportation declines and the reduction of ambient NO2 exposure. While the state of global lockdown is not sustainable, these findings allude to the potential for mitigating public health risk by reducing “business as usual” air pollutant emissions from economic activities. Explore trends here: https://nina.earthengine.app/view/lockdown-pollution. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/286801 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Zander S. Venter,Kristin Aunan,Sourangsu Chowdhury,et al. COVID-19 lockdowns cause global air pollution declines[J]. Proceedings of the National Academy of Science,2020. |
APA | Zander S. Venter,Kristin Aunan,Sourangsu Chowdhury,&Jos Lelieveld.(2020).COVID-19 lockdowns cause global air pollution declines.Proceedings of the National Academy of Science. |
MLA | Zander S. Venter,et al."COVID-19 lockdowns cause global air pollution declines".Proceedings of the National Academy of Science (2020). |
条目包含的文件 | 条目无相关文件。 |
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