Air pollution impacts of COVID-19-related containment measures

被引：49

作者：

Chossiere, Guillaume P. ^{[1
]}

Xu, Haofeng ^{[1
]}

Dixit, Yash ^{[1
]}

Isaacs, Stewart ^{[1
]}

Eastham, Sebastian D. ^{[1
,2
]}

Allroggen, Florian ^{[1
,2
]}

Speth, Raymond L. ^{[1
,2
]}

Barrett, Steven R. H. ^{[1
,2
,3
]}

机构：

[1] MIT, Dept Aeronaut & Astronaut, Lab Aviat & Environm, Cambridge, MA 02139 USA

[2] MIT, Joint Program Sci & Policy Global Change, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] Seoul Natl Univ, Dept Mech Engn, Seoul, South Korea

来源：

SCIENCE ADVANCES | 2021年 / 7卷 / 21期

关键词：

TERM OZONE EXPOSURE; MORTALITY; TROPOMI; CHINA; MODEL; CHEMISTRY; PRECURSOR; CLIMATE; QUALITY;

D O I：

10.1126/sciadv.abe1178

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Responses to the COVID-19 outbreak resulted in one of the largest short-term decreases in anthropogenic emissions in modern history. To date, there has been no comprehensive assessment of the impact of lockdowns on air quality and human health. Using global satellite observations and ground measurements from 36 countries in Europe, North America, and East Asia, we find that lockdowns led to reductions in NO2 concentrations globally, resulting in similar to 32,000 avoided premature mortalities, including similar to 21,000 in China. However, we do not find corresponding reductions in PM2.5 and ozone globally. Using satellite measurements, we show that the disconnect between NO2 and ozone changes stems from local chemical regimes. The COVID-related lockdowns demonstrate the need for targeted air quality policies to reduce the global burden of air pollution, especially related to secondary pollutants.

引用

页数：10

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