气候变化领域集成服务门户(CCPortal): Unexpected deep mixing layer in the Sichuan Basin, China

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DOI	10.1016/j.atmosres.2020.105300
	Unexpected deep mixing layer in the Sichuan Basin, China
	Liu Y.; Tang G.; Huang X.; Wei K.; Wu S.; Wang M.; Wang Y.; Zhang J.; Wang Y.
发表日期	2021
ISSN	0169-8095
卷号	249
英文摘要	In the Sichuan Basin (SCB), one of the four major basins in China, a one-year continuous observation study was performed using a ceilometer in Chengdu (2018.11–2019.12). The results show that the mixing layer height (MLH) in the SCB exhibits a bimodal seasonal variation pattern, with peaks in June (842 m) and October (704 m) and valleys in September (535 m) and January (607 m). Stable atmospheric conditions in September were the main reason for the decrease in MLH. Through comparison to other regions in China, it is found that the seasonal evolution of the MLH in the SCB is similar to that in the Yunnan-Guizhou Plateau region and more pronounced than that in the central and eastern plain regions of China. This indicates that the change in MLH is influenced by both the Western Pacific Subtropical High and South Asian High. Combined with an analysis of the fine-particulate matter concentration, it is found that the main influence factor of the air pollution in the SCB is not the atmospheric dilution capability, and the local contribution should be paid more attention to. The MLH as a meteorological index for air quality prediction varies from place to place. This study is of great importance to the understanding of the mixing layer structure in the basin and its influence on air pollution. © 2020 Elsevier B.V.
英文关键词	Air pollution; Atmospheric stability; Local contribution; Mixing layer height; Sichuan Basin
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236908
作者单位	State Key Laboratory of Severe Weather & Key Laboratory for Atmospheric Chemistry of China Meteorology Administration, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, 610225, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100190, China; Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Liu Y.,Tang G.,Huang X.,et al. Unexpected deep mixing layer in the Sichuan Basin, China[J],2021,249.
APA	Liu Y..,Tang G..,Huang X..,Wei K..,Wu S..,...&Wang Y..(2021).Unexpected deep mixing layer in the Sichuan Basin, China.Atmospheric Research,249.
MLA	Liu Y.,et al."Unexpected deep mixing layer in the Sichuan Basin, China".Atmospheric Research 249(2021).