气候变化领域集成服务门户(CCPortal): COVID-19 pandemic reveals persistent disparities in nitrogen dioxide pollution

CCPortal

DOI	10.1073/pnas.2022409118
	COVID-19 pandemic reveals persistent disparities in nitrogen dioxide pollution
	Kerr G.H.; Goldberg D.L.; Anenberg S.C.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:30
英文摘要	The unequal spatial distribution of ambient nitrogen dioxide (NO2), an air pollutant related to traffic, leads to higher exposure for minority and low socioeconomic status communities. We exploit the unprecedented drop in urban activity during the COVID-19 pandemic and use high-resolution, remotely sensed NO2 observations to investigate disparities in NO2 levels across different demographic subgroups in the United States. We show that, prior to the pandemic, satellite-observed NO2 levels in the least White census tracts of the United States were nearly triple the NO2 levels in the most White tracts. During the pandemic, the largest lockdown-related NO2 reductions occurred in urban neighborhoods that have 2.0 times more non-White residents and 2.1 times more Hispanic residents than neighborhoods with the smallest reductions. NO2 reductions were likely driven by the greater density of highways and interstates in these racially and ethnically diverse areas. Although the largest reductions occurred in marginalized areas, the effect of lockdowns on racial, ethnic, and socioeconomic NO2 disparities was mixed and, for many cities, nonsignificant. For example, the least White tracts still experienced ∼1.5 times higher NO2 levels during the lockdowns than the most White tracts experienced prior to the pandemic. Future policies aimed at eliminating pollution disparities will need to look beyond reducing emissions from only passenger traffic and also consider other collocated sources of emissions such as heavy-duty vehicles. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Nitrogen dioxide \| air pollution \| environmental justice \| COVID-19 \| TROPOMI
语种	英语
scopus关键词	nitrogen dioxide; air pollutant; demography; environmental monitoring; epidemiology; exhaust gas; human; prevention and control; socioeconomics; United States; Air Pollutants; COVID-19; Demography; Environmental Monitoring; Humans; Nitrogen Dioxide; SARS-CoV-2; Socioeconomic Factors; Traffic-Related Pollution; United States; Vehicle Emissions
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238681
作者单位	Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC 20052, United States; Energy Systems Division, Argonne National Laboratory, Lemont, IL 60439, United States
推荐引用方式 GB/T 7714	Kerr G.H.,Goldberg D.L.,Anenberg S.C.. COVID-19 pandemic reveals persistent disparities in nitrogen dioxide pollution[J],2021,118(30).
APA	Kerr G.H.,Goldberg D.L.,&Anenberg S.C..(2021).COVID-19 pandemic reveals persistent disparities in nitrogen dioxide pollution.Proceedings of the National Academy of Sciences of the United States of America,118(30).
MLA	Kerr G.H.,et al."COVID-19 pandemic reveals persistent disparities in nitrogen dioxide pollution".Proceedings of the National Academy of Sciences of the United States of America 118.30(2021).