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Distinct Regimes of O-3 Response to COVID-19 Lockdown in China

文献类型：期刊论文

作者Liu, Shanshan1; Liu, Cheng2,3,4,5,6; Hu, Qihou3; Su, Wenjing1; Yang, Xian7; Lin, Jinan3,8; Zhang, Chengxin4,5; Xing, Chengzhi3; Ji, Xiangguang3,8; Tan, Wei3
刊名ATMOSPHERE
出版日期2021-02-01
卷号12
关键词COVID-19 O-3 response Lasso statistical analysis control strategies
DOI10.3390/atmos12020184
通讯作者Liu, Cheng(chliu81@ustc.edu.cn) ; Gao, Meng(mmgao2@hkbu.edu.hk)
英文摘要Restrictions on human activities remarkably reduced emissions of air pollutants in China during the COVID-19 lockdown periods. However, distinct responses of O-3 concentrations were observed across China. In the Beijing-Tianjin-Hebei (BTH) and Yangtze River Delta (YRD) regions, O-3 concentrations were enhanced by 90.21 and 71.79% from pre-lockdown to lockdown periods in 2020, significantly greater than the equivalent concentrations for the same periods over 2015-2019 (69.99 and 43.62%, p < 0.001). In contrast, a decline was detected (-1.1%) in the Pearl River Delta (PRD) region. To better understand the underlying causes for these inconsistent responses across China, we adopted the least absolute shrinkage and selection operator (Lasso) and ordinary linear squares (OLS) methods in this study. Statistical analysis indicated that a sharp decline in nitrogen dioxide (NO2) was the major driver of enhanced O-3 in the BTH region as it is a NOx-saturated region. In the YRD region, season-shift induced changes in the temperature/shortwave radiative flux, while lockdown induced declines in NO2, attributable to the rise in O-3. In the PRD region, the slight drop in O-3 is attributed to the decreased intensity of radiation. The distinct regimes of the O-3 response to the COVID-19 lockdown in China offer important insights into different O-3 control strategies across China.
资助项目National Key Research and Development Program of China[2018YFC0213104] ; National Key Research and Development Program of China[2017YFC0210002] ; National Key Research and Development Program of China[2016YFC0203302] ; National Key Research and Development Program of China[2017YFC0212800] ; National Natural Science Foundation of China[41722501] ; National Natural Science Foundation of China[51778596] ; National Natural Science Foundation of China[41977184] ; Anhui Science and Technology Major Project[18030801111] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23020301] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0102] ; National Key Project for Causes and Control of Heavy Air Pollution[DQGG0205]
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000622143300001
出版者MDPI
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Anhui Science and Technology Major Project ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Project for Causes and Control of Heavy Air Pollution
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/120436]  
专题中国科学院合肥物质科学研究院
通讯作者Liu, Cheng; Gao, Meng
作者单位1.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
3.Chinese Acad Sci, Key Lab Environm Opt & Technol, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
4.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Peoples R China
5.Univ Sci & Technol China, Key Lab Precis Sci Instrumentat, Anhui Higher Educ Inst, Hefei 230026, Peoples R China
6.Univ Sci & Technol China, Anhui Prov Key Lab Polar Environm & Global Change, Hefei 230026, Peoples R China
7.Hong Kong Baptist Univ, Dept Comp Sci, Hong Kong, Peoples R China
8.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China
9.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
10.Hong Kong Baptist Univ, Dept Geog, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Shanshan,Liu, Cheng,Hu, Qihou,et al. Distinct Regimes of O-3 Response to COVID-19 Lockdown in China[J]. ATMOSPHERE,2021,12.
APA Liu, Shanshan.,Liu, Cheng.,Hu, Qihou.,Su, Wenjing.,Yang, Xian.,...&Gao, Meng.(2021).Distinct Regimes of O-3 Response to COVID-19 Lockdown in China.ATMOSPHERE,12.
MLA Liu, Shanshan,et al."Distinct Regimes of O-3 Response to COVID-19 Lockdown in China".ATMOSPHERE 12(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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