Changes in Air Quality from the COVID to the Post-COVID Era in the Beijing-Tianjin-Tangshan Region in China

doi:10.4209/aaqr.210270

IEECAS OpenIR > 古环境研究室

	Changes in Air Quality from the COVID to the Post-COVID Era in the Beijing-Tianjin-Tangshan Region in China
	Guo, Qingchun 1,2; Wang, Zhaosheng 3; He, Zhenfang 1,4; Li, Xinzhou2,5 ; Meng, Jingjing 1; Hou, Zhanfang 1; Yang, Jiaoxue 1
通讯作者	Guo, Qingchun(guoqingchun@lcu.edu.cn) ; Wang, Zhaosheng(wangzs@igsnrr.ac.cn)
	2021-12-01
发表期刊	AEROSOL AND AIR QUALITY RESEARCH
ISSN	1680-8584
卷号	21 期号:12 页码:13
摘要	This article discussed air quality changes in the Beijing-Tianjin-Tangshan (BTT) region. The air quality index (AQI) values, and the concentrations of PM2.5, PM10, SO2, CO, NO2, and O-3 in the BTT region during the COVID-19 outbreak in 2020 were, respectively, 79.4, 47.2 mu g m(-3), 73.4 mu g m(-3), 10.3 mu g m(-3), 0.87 mg m(-3), 33.6 mu g m(-3), and 90.7 mu g m(-3). However, they were, respectively, 102.7, 61.4 mu g m(-3), 121.0 mu g m(-3), 9.0 mu g m(-3), 0.88 mg m(-3), 40.1 mu g m(-3), and 84.0 mu g m(-3) during the same period in 2021, which is an increase of 29.2%, 30.1%, 64.8%, -12.9%, 1.94 %, 19.5%, and -7.4% compared with the values in 2020. The combined proportions of grade I and grade II during the COVID-19 outbreak in 2020 were 16.7% higher than those in the same period in 2021, so the air quality has deteriorated rapidly from 2020 to the post-COVID era in 2021. The possible reasons for poorer air quality are that the frequency of dusty weather and air pollutant discharge has increased, and meteorological conditions have been relatively unfavorable. The average AQI values, and concentrations of PM2.5, PM10, SO2, CO, NO2, and O-3 during the post-COVID period in 2021 respectively decreased by 14.8%, 29.0%, 14.6%, 22.5%, 37.4%, 14.8%, and 8.7%, compared with those in 2020. It is also worth noting that all the changes in air pollution during the post-COVID era have been consistent. The combined proportions of grade I and grade II during post-COVID period in 2021 were 18.4% higher than those during the same period of 2020, which indicates that the air quality during post-COVID 2021 has obviously improved compared with those in the same period of 2020. The possible reasons are a series of clean air policies and clean air actions, as well as favorable atmospheric diffusion conditions. These results indicate that clean air policies play a very important role in improving air quality.
关键词	COVID-19 Post-COVID Air quality PM2.5 PM10
DOI	10.4209/aaqr.210270
关键词[WOS]	IMPACT ; EVENT
收录类别	SCI ; SCI
语种	英语
资助项目	NSFC[41572150] ; NSFC[41472162] ; NSFC[41702373] ; Shandong Social Sciences Planning Research Program[18CKPJ34] ; Shandong Province Higher Educational Humanities and Social Science Program[J18RA196] ; State Key Laboratory of Loess and Quaternary Geology Foundation[SKLLQG1907]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	NSFC ; Shandong Social Sciences Planning Research Program ; Shandong Province Higher Educational Humanities and Social Science Program ; State Key Laboratory of Loess and Quaternary Geology Foundation
WOS类目	Environmental Sciences
WOS记录号	WOS:000726351000006
出版者	TAIWAN ASSOC AEROSOL RES-TAAR
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17309
专题	古环境研究室
通讯作者	Guo, Qingchun; Wang, Zhaosheng
作者单位	1.Liaocheng Univ, Sch Geog & Environm, Liaocheng 252000, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.Chinese Acad Sci, Natl Ecosyst Sci Data Ctr, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Guo, Qingchun,Wang, Zhaosheng,He, Zhenfang,et al. Changes in Air Quality from the COVID to the Post-COVID Era in the Beijing-Tianjin-Tangshan Region in China[J]. AEROSOL AND AIR QUALITY RESEARCH,2021,21(12):13.
APA	Guo, Qingchun.,Wang, Zhaosheng.,He, Zhenfang.,Li, Xinzhou.,Meng, Jingjing.,...&Yang, Jiaoxue.(2021).Changes in Air Quality from the COVID to the Post-COVID Era in the Beijing-Tianjin-Tangshan Region in China.AEROSOL AND AIR QUALITY RESEARCH,21(12),13.
MLA	Guo, Qingchun,et al."Changes in Air Quality from the COVID to the Post-COVID Era in the Beijing-Tianjin-Tangshan Region in China".AEROSOL AND AIR QUALITY RESEARCH 21.12(2021):13.