气候变化领域集成服务门户(CCPortal): "warm cover": Precursory strong signals for haze pollution hidden in the middle troposphere

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DOI	10.5194/acp-21-14131-2021
	"warm cover": Precursory strong signals for haze pollution hidden in the middle troposphere
	Xu X.; Cai W.; Zhao T.; Qiu X.; Zhu W.; Sun C.; Yan P.; Wang C.; Ge F.
发表日期	2021
ISSN	1680-7316
起始页码	14131
结束页码	14139
卷号	21 期号:18
英文摘要	Eastern China (EC), located in the downstream region of the Tibetan Plateau (TP), is a large area with frequent haze pollution. In addition to air pollutant emissions, meteorological conditions are a key inducement for air pollution episodes. Based on the study of the Great Smog of London in 1952 and haze pollution in EC over recent decades, it is found that the abnormal "warm cover"(air-temperature anomalies) in the middle troposphere, as a precursory strong signal, could be connected to severe air pollution events. The convection and vertical diffusion in the atmospheric boundary layer (ABL) were suppressed by a relatively stable structure of warm cover in the middle troposphere leading to ABL height decreases, which were favorable for the accumulation of air pollutants in the ambient atmosphere. The anomalous structure of the troposphere's warm cover not only exist in heavy haze pollution on the daily scale, but also provide seasonal, interannual and interdecadal strong signals for frequently occurring regional haze pollution. It is revealed that a close relationship existed between interannual variations of the TP's heat source and the warm cover strong signal in the middle troposphere over EC. The warming TP could lead to anomalous warm cover in the middle troposphere from the plateau to the downstream EC region and even the entire East Asian region, thus causing frequent winter haze pollution in EC region. © Copyright:
语种	英语
scopus关键词	air quality; ambient air; atmospheric pollution; haze; pollution incidence; pollution monitoring; smog; temperature anomaly; temporal variation; troposphere; China; Qinghai-Xizang Plateau
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246563
作者单位	State Key Laboratory of Severe Weather (LASW), Chinese Academy of Meteorological Sciences, Beijing, China; National Climate Center, China Meteorological Administration, Beijing, China; School of Geographical Science, Nanjing University of Information Science and Technology, Jiangsu Province, Nanjing, China; Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Jiangsu Province, Nanjing, China; School of Applied Meteorology, Nanjing University of Information Science and Technology, Jiangsu Province, Nanjing, China; Beijing Institute of Applied Meteorology, Beijing, China; Meteorological Observation Center, China Meteorological Administration, Beijing, China; Training Center, China Meteorological Administration, Beijing, China; Sch. of Atmosph. Sci./Plateau Atmosphere and Environ. Key Lab. of Sichuan Prov./Jt. Lab. of Climate and Environ. Change, Chengdu University of Information Technology, Sichuan Province, Chengdu,...
推荐引用方式 GB/T 7714	Xu X.,Cai W.,Zhao T.,et al. "warm cover": Precursory strong signals for haze pollution hidden in the middle troposphere[J],2021,21(18).
APA	Xu X..,Cai W..,Zhao T..,Qiu X..,Zhu W..,...&Ge F..(2021)."warm cover": Precursory strong signals for haze pollution hidden in the middle troposphere.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(18).
MLA	Xu X.,et al.""warm cover": Precursory strong signals for haze pollution hidden in the middle troposphere".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.18(2021).