气候变化领域集成服务门户(CCPortal): Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID-19 Pandemic

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DOI	10.1029/2020GL090444
	Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID-19 Pandemic
	Xu L.; Zhang J.; Sun X.; Xu S.; Shan M.; Yuan Q.; Liu L.; Du Z.; Liu D.; Xu D.; Song C.; Liu B.; Lu G.; Shi Z.; Li W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Black carbon (BC) not only warms the atmosphere but also affects human health. The nationwide lockdown due to the Coronavirus Disease 2019 (COVID-19) pandemic led to a major reduction in human activity during the past 30 years. Here, the concentration of BC in the urban, urban-industry, suburb, and rural areas of a megacity Hangzhou were monitored using a multiwavelength Aethalometer to estimate the impact of the COVID-19 lockdown on BC emissions. The citywide BC decreased by 44% from 2.30 to 1.29 μg/m3 following the COVID-19 lockdown period. The source apportionment based on the Aethalometer model shows that vehicle emission reduction responded to BC decline in the urban area and biomass burning in rural areas around the megacity had a regional contribution of BC. We highlight that the emission controls of vehicles in urban areas and biomass burning in rural areas should be more efficient in reducing BC in the megacity Hangzhou. © 2020. The Authors.
英文关键词	Carbon; Emission control; Biomass-burning; Black carbon; Coronaviruses; Human activities; Human health; Multiwavelength; Source apportionment; Vehicle emission; Rural areas; air quality; atmospheric pollution; biomass burning; black carbon; concentration (composition); epidemic; human activity; megacity; source apportionment; traffic emission; viral disease; China; Hangzhou; Zhejiang; Coronavirus
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169343
作者单位	Key Laboratory of Geoscience Big Data and Deep Resource of Zhejiang Province, Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China; Zhejiang Ecological and Environmental Monitoring Center, Hangzhou, China; Zhejiang Linan Atmospheric Background National Observation and Research Station, Hangzhou, China; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Economics, University of Birmingham, Birmingham, United Kingdom
推荐引用方式 GB/T 7714	Xu L.,Zhang J.,Sun X.,et al. Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID-19 Pandemic[J],2020,47(23).
APA	Xu L..,Zhang J..,Sun X..,Xu S..,Shan M..,...&Li W..(2020).Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID-19 Pandemic.Geophysical Research Letters,47(23).
MLA	Xu L.,et al."Variation in Concentration and Sources of Black Carbon in a Megacity of China During the COVID-19 Pandemic".Geophysical Research Letters 47.23(2020).