气候变化领域集成服务门户(CCPortal): Abnormally Shallow Boundary Layer Associated With Severe Air Pollution During the COVID-19 Lockdown in China

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DOI	10.1029/2020GL090041
	Abnormally Shallow Boundary Layer Associated With Severe Air Pollution During the COVID-19 Lockdown in China
	Su T.; Li Z.; Zheng Y.; Luan Q.; Guo J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	After the 2020 Lunar New Year, the Chinese government implemented a strict nationwide lockdown to inhibit the spread of the Coronavirus Disease 2019 (COVID-19). Despite the abrupt decreases in gaseous emissions caused by record-low anthropogenic activities, severe haze pollution occurred in northern China during the COVID lockdown. This paradox has attracted the attention of both the public and the scientific community. By analyzing comprehensive measurements of air pollutants, planetary boundary layer (PBL) height, and surface meteorology, we show that the severe air pollution episode over northern China coincided with the abnormally low PBL height, which had reduced by 45%, triggering strong aerosol-PBL interactions. After dynamical processes initiated the temperature inversion, the Beijing metropolitan area experienced a period with continuously shallow PBLs during the lockdown. This unprecedented event provided an experiment showcasing the role of meteorology, in particular aerosol-PBL interactions in affecting air quality. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerosols; Air quality; Atmospheric temperature; Atmospheric thermodynamics; Meteorology; Air pollution episodes; Anthropogenic activity; Chinese Government; Comprehensive measurement; Dynamical process; Planetary boundary layers; Scientific community; Temperature inversions; Boundary layers; air quality; atmospheric pollution; boundary layer; epidemic; episodic event; experimental study; haze; human activity; metropolitan area; viral disease; Beijing [China]; 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/169538
作者单位	Department of Atmospheric and Oceanic Sciences and ESSIC, University of Maryland, College Park, MD, United States; Beijing Municipal Climate Center, Beijing, China; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological, Sciences, Beijing, China
推荐引用方式 GB/T 7714	Su T.,Li Z.,Zheng Y.,et al. Abnormally Shallow Boundary Layer Associated With Severe Air Pollution During the COVID-19 Lockdown in China[J],2020,47(20).
APA	Su T.,Li Z.,Zheng Y.,Luan Q.,&Guo J..(2020).Abnormally Shallow Boundary Layer Associated With Severe Air Pollution During the COVID-19 Lockdown in China.Geophysical Research Letters,47(20).
MLA	Su T.,et al."Abnormally Shallow Boundary Layer Associated With Severe Air Pollution During the COVID-19 Lockdown in China".Geophysical Research Letters 47.20(2020).