Changes in Air Quality from the COVID to the Post-COVID Era in the Beijing-Tianjin-Tangshan Region in China
Guo, Qingchun4,5; Wang, Zhaosheng3; He, Zhenfang2,5; Li, Xinzhou1,4; Meng, Jingjing5; Hou, Zhanfang5; Yang, Jiaoxue5
刊名AEROSOL AND AIR QUALITY RESEARCH
2021-12-01
卷号21期号:12页码:13
关键词COVID-19 Post-COVID Air quality PM2.5 PM10
ISSN号1680-8584
DOI10.4209/aaqr.210270
通讯作者Guo, Qingchun(guoqingchun@lcu.edu.cn) ; Wang, Zhaosheng(wangzs@igsnrr.ac.cn)
英文摘要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.
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关键词IMPACT ; EVENT
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者TAIWAN ASSOC AEROSOL RES-TAAR
WOS记录号WOS:000726351000006
资助机构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
内容类型期刊论文
源URL[http://ir.ieecas.cn/handle/361006/17308]  
专题地球环境研究所_古环境研究室
通讯作者Guo, Qingchun; Wang, Zhaosheng
作者单位1.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, 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, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
5.Liaocheng Univ, Sch Geog & Environm, Liaocheng 252000, Shandong, 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.
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