气候变化领域集成服务门户(CCPortal): Global NO2 Dynamics During the COVID-19 Pandemic: A Comparison Between Two Waves of the Coronavirus

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DOI	10.1109/JSTARS.2021.3073156
	Global NO2 Dynamics During the COVID-19 Pandemic: A Comparison Between Two Waves of the Coronavirus
	Wang, Haibo; Tan, Junlei; Li, Xin
通讯作者	Li, X (通讯作者)
发表日期	2021
ISSN	1939-1404
EISSN	2151-1535
起始页码	4310
结束页码	4320
卷号	14
英文摘要	Nitrogen dioxide (NO2) as one of the key pollutants in the atmosphere, is an important trace gas of traffic emissions or industrial activities. The coronavirus disease (COVID-19) epidemic preventions have significantly reduced the emissions of NO2, which provided an opportunity to disentangling the contributions to global emissions in major epidemic regions. Here, we quantified the influences of lockdown measures on the NO2 concentration at a global scale during the two waves of the COVID-19 epidemic, and disentangled the relative contributions of the major epidemic regions (i.e., China, Europe, and USA) on the global NO2 densities due to the lockdown measures. Our results revealed that there was an evident decrease of global NO2 in 2020, especially in China, Europe, and USA. The global mean NO2 densities decreased approximately 2.1 and 3.9 mu mol/m(2) in the first and second waves of the epidemic. While in the Northern Hemisphere, NO2 densities decreased 6.6 mu mol/m(2) on average during the first stage of the epidemic, and a slight increase (i.e., 1.7 mu mol/m(2)) in the second wave of the epidemic. The magnitudes and durations of the second wave were much smaller than the first wave of the coronavirus infections. The strict lockdown measures implemented in China significantly decreased the NO2 concentration, which therefore the largest contributor in the first wave decreases of global average NO2 densities. Intervention at an early stage would be beneficial to the preventions of epidemic situation. Our study could provide references for economic loss assessments and economic recovery strategies during the stages ofpost-pandemic.
英文关键词	Epidemics; COVID-19; Europe; Pollution measurement; Pandemics; Atmospheric measurements; Production; Air pollutants emission; coronavirus disease (COVID-19); Google Earth Engine (GEE); Lockdown; prevention controls; SARS-CoV-2; Sentinel-5p; tropospheric monitoring instrument (TROPOMI)
语种	英语
WOS研究方向	Engineering ; Physical Geography ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000647337300006
来源期刊	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260117
推荐引用方式 GB/T 7714	Wang, Haibo,Tan, Junlei,Li, Xin. Global NO2 Dynamics During the COVID-19 Pandemic: A Comparison Between Two Waves of the Coronavirus[J]. 中国科学院青藏高原研究所,2021,14.
APA	Wang, Haibo,Tan, Junlei,&Li, Xin.(2021).Global NO2 Dynamics During the COVID-19 Pandemic: A Comparison Between Two Waves of the Coronavirus.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,14.
MLA	Wang, Haibo,et al."Global NO2 Dynamics During the COVID-19 Pandemic: A Comparison Between Two Waves of the Coronavirus".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 14(2021).