气候变化领域集成服务门户(CCPortal): Limited Regional Aerosol and Cloud Microphysical Changes Despite Unprecedented Decline in Nitrogen Oxide Pollution During the February 2020 COVID-19 Shutdown in China

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DOI	10.1029/2020GL088913
	Limited Regional Aerosol and Cloud Microphysical Changes Despite Unprecedented Decline in Nitrogen Oxide Pollution During the February 2020 COVID-19 Shutdown in China
	Diamond M.S.; Wood R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:17
英文摘要	Following the emergence of a novel coronavirus in Wuhan, China instituted shutdown measures starting in late January and continuing into February 2020 to arrest the spread of disease. This resulted in a sharp economic contraction unparalleled in recent Chinese history. Satellite retrievals show that nitrogen dioxide pollution declined by an unprecedented amount (~50% regionally) from its expected unperturbed value, but regional-scale column aerosol loadings and cloud microphysical properties were not detectably affected. The disparate impact is tied to differential economic impacts of the shutdown, in which transportation, a disproportionate source of nitrogen oxide emissions, underwent drastic declines (~90% reductions in passenger traffic), whereas industry and power generation, responsible for >90% of particulate emissions, were relatively less affected (~20% reductions in electricity and thermal power generation). A combination of anomalously warm and humid meteorological conditions and complex chemical interactions further decreased nitrogen dioxide concentrations but likely enhanced secondary aerosol formation. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerosols; Nitrogen oxides; Traffic surveys; Cloud microphysical properties; Meteorological condition; Nitrogen dioxides; Nitrogen oxide emissions; Passenger traffic; Satellite retrieval; Secondary aerosols; Thermal power generation; Air pollution; aerosol; carbon dioxide; cloud microphysics; concentration (composition); disease spread; economic impact; nitrogen oxides; pollutant source; spatiotemporal analysis; virus; China; Hubei; Wuhan; 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/169767
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Diamond M.S.,Wood R.. Limited Regional Aerosol and Cloud Microphysical Changes Despite Unprecedented Decline in Nitrogen Oxide Pollution During the February 2020 COVID-19 Shutdown in China[J],2020,47(17).
APA	Diamond M.S.,&Wood R..(2020).Limited Regional Aerosol and Cloud Microphysical Changes Despite Unprecedented Decline in Nitrogen Oxide Pollution During the February 2020 COVID-19 Shutdown in China.Geophysical Research Letters,47(17).
MLA	Diamond M.S.,et al."Limited Regional Aerosol and Cloud Microphysical Changes Despite Unprecedented Decline in Nitrogen Oxide Pollution During the February 2020 COVID-19 Shutdown in China".Geophysical Research Letters 47.17(2020).