气候变化领域集成服务门户(CCPortal): The Response in Air Quality to the Reduction of Chinese Economic Activities During the COVID-19 Outbreak

CCPortal

DOI	10.1029/2020GL088070
	The Response in Air Quality to the Reduction of Chinese Economic Activities During the COVID-19 Outbreak
	Shi X.; Brasseur G.P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	During the COVID-19 outbreak that took place in early 2020, the economic activities in China were drastically reduced and accompanied by a strong reduction in the emission of primary air pollutants. On the basis of measurements made at the monitoring stations operated by the China National Environmental Monitoring Center, we quantify the reduction in surface PM2.5, NO2, CO, and SO2 concentrations in northern China during the lockdown, which started on 23 January 2020. We find that, on the average, the levels of surface PM2.5 and NO2 have decreased by approximately 35% and 60%, respectively, between the period 1 and 22 January 2020 and the period 23 January and 29 February 2020. At the same time, the mean ozone concentration has increased by a factor 1.5–2. In urban area of Wuhan, where drastic measures were adopted to limit the spread of the coronavirus, similar changes in the concentrations of PM2.5, NO2, and ozone are found. © 2020. The Authors.
英文关键词	Air quality; Nitrogen oxides; Ozone; Chinese economics; Coronaviruses; Economic activities; Environmental Monitoring; Monitoring stations; Northern China; Ozone concentration; Urban areas; Economics; air quality; carbon monoxide; concentration (composition); economic activity; emission control; monitoring system; nitrous oxide; ozone; particulate matter; urban area; viral disease; virus; China; 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/170319
作者单位	Max Planck Institute for Meteorology, Hamburg, Germany; National Center for Atmospheric Research, Boulder, CO, United States; Department of CEE, The Hong Kong Polytechnic University, Hong Kong
推荐引用方式 GB/T 7714	Shi X.,Brasseur G.P.. The Response in Air Quality to the Reduction of Chinese Economic Activities During the COVID-19 Outbreak[J],2020,47(11).
APA	Shi X.,&Brasseur G.P..(2020).The Response in Air Quality to the Reduction of Chinese Economic Activities During the COVID-19 Outbreak.Geophysical Research Letters,47(11).
MLA	Shi X.,et al."The Response in Air Quality to the Reduction of Chinese Economic Activities During the COVID-19 Outbreak".Geophysical Research Letters 47.11(2020).