气候变化领域集成服务门户(CCPortal): Impact of the COVID-19 induced lockdown measures on PM2.5 concentration in USA

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DOI	10.1016/j.atmosenv.2021.118388
	Impact of the COVID-19 induced lockdown measures on PM2.5 concentration in USA
	Ghosal R.; Saha E.
发表日期	2021
ISSN	1352-2310
卷号	254
英文摘要	In 2020, most countries around the world have observed varying degrees of public lockdown measures to mitigate the transmission of SARS-CoV-2. As an unintended consequence of reduced transportation and industrial activities, air quality has dramatically improved in many major cities around the world. In this paper, we analyze the environmental impact of the lockdown measures on PM2.5 concentration levels in 48 core-based statistical areas (CBSA) of the United States, during the pre and post-lockdown period of January to June 2020. We model the effect of lockdown on the PM2.5 concentration in different CBSAs while adjusting for various meteorological factors like temperature, wind-speed, precipitation and snow. Linear mixed effects models and functional regression methods with random intercepts are employed to capture the heterogeneity of the effect across different regions. Our analysis shows there is a statistically significant reduction in levels of PM2.5 across most of the regions during the lock-down period, although interestingly, this effect is not uniform across all the CBSAs under consideration. © 2021 Elsevier Ltd
关键词	Air quality COVID-19 Functional regression Lockdown Mixed effects model PM2.5
语种	英语
scopus关键词	Regression analysis; Wind; Concentration levels; COVID-19; Functional regression; Industrial activities; Lockdown; Major cities; Meteorological factors; Mixed effects models; PM$-2.5$; Unintended consequences; Air quality; snow; air quality; concentration (composition); COVID-19; disease transmission; environmental impact; induced polarization; induced response; particulate matter; severe acute respiratory syndrome; urban area; urban pollution; air pollution; air quality; Article; concentration (parameter); controlled study; coronavirus disease 2019; environmental impact; environmental temperature; human; meteorological phenomena; national lockdown; particulate matter 2.5; precipitation; priority journal; United States; wind speed; United States; SARS coronavirus
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248440
作者单位	Department of Biostatistics, Johns Hopkins University, United States; Department of Statistics, University of Chicago, United States
推荐引用方式 GB/T 7714	Ghosal R.,Saha E.. Impact of the COVID-19 induced lockdown measures on PM2.5 concentration in USA[J],2021,254.
APA	Ghosal R.,&Saha E..(2021).Impact of the COVID-19 induced lockdown measures on PM2.5 concentration in USA.ATMOSPHERIC ENVIRONMENT,254.
MLA	Ghosal R.,et al."Impact of the COVID-19 induced lockdown measures on PM2.5 concentration in USA".ATMOSPHERIC ENVIRONMENT 254(2021).