干旱区生态环境知识资源中心(Arid): Seasonal characteristics of aerosol vertical structure and autumn enhancement of non-spherical particle over the semi-arid region of northwest China

Arid

DOI	10.1016/j.atmosenv.2020.117912
	Seasonal characteristics of aerosol vertical structure and autumn enhancement of non-spherical particle over the semi-arid region of northwest China
	Zhou, Tian; Xie, Hailing; Jiang, Tao; Huang, Jianping; Bi, Jianrong; Huang, Zhongwei; Shi, Jinsen
通讯作者	Huang, JP
来源期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
EISSN	1873-2844
出版年	2021
卷号	244
英文摘要	Assessments of the effects of aerosols on the climate and environment still feature large uncertainties, and a better understanding of the spatiotemporal variation in these effects is needed. In this study, coincident obser-vations of ground-based lidar and sun photometer measurements from March 2010 to February 2011 were selected to examine the sensible seasonal characteristics of the aerosol vertical structure and the potential variations of aerosol properties before and during the wintertime heating period at SACOL (Semi-Arid Climate and Environment Observatory of Lanzhou University, 35.946 degrees N, 104.137 degrees E, 1961 m ASL), northwest of China. Our results suggest that the aerosol behavior during a year can be roughly divided into two major periods: the non spherical particle dominated period and the spherical particle dominated period based on the depolarization ratio, or the dust-dominated period (spring and winter) and the non-dust-dominated period (summer and autumn) based on the aerosol angstrom exponent. The height and width of peak of aerosol scale height frequency distribution show the distribution of aerosol layers in summer is highest, then followed by spring, autumn and winter. The depolarization ratios at different heights in spring are higher than those in other seasons. A similar distribution of extinction coefficients above 2 km can be seen in four seasons, but relatively large differences exist below 2 km, especially within 1 km. The increase of the extinction coefficient is observed near surface in November 2010 with a sharp increase in depolarization ratio which is induced by the rising contribution of the dust events (up to 13%) and the mixed type aerosols (70%). These results not only provide detailed characteristics of aerosol variation over the SACOL region, but also remind us to take into account the potential contribution of dust aerosol to the severe regional air pollution during the wintertime heating period.
英文关键词	Seasonal characteristics Aerosol vertical structure Non-spherical particle enhancement Lidar
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000591733000004
WOS关键词	YANGTZE-RIVER DELTA ; GROUND-BASED LIDAR ; OPTICAL-PROPERTIES ; DUST AEROSOL ; ANTHROPOGENIC DUST ; POLLUTION EVENTS ; LOESS PLATEAU ; CLIMATE ; ABSORPTION ; LAYER
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/328015
作者单位	[Zhou, Tian; Xie, Hailing; Huang, Jianping; Bi, Jianrong; Huang, Zhongwei; Shi, Jinsen] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China; [Jiang, Tao] Natl Univ Def Technol, Coll Meteorol & Oceanog, Changsha 410000, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Tian,Xie, Hailing,Jiang, Tao,et al. Seasonal characteristics of aerosol vertical structure and autumn enhancement of non-spherical particle over the semi-arid region of northwest China[J]. 兰州大学,2021,244.
APA	Zhou, Tian.,Xie, Hailing.,Jiang, Tao.,Huang, Jianping.,Bi, Jianrong.,...&Shi, Jinsen.(2021).Seasonal characteristics of aerosol vertical structure and autumn enhancement of non-spherical particle over the semi-arid region of northwest China.ATMOSPHERIC ENVIRONMENT,244.
MLA	Zhou, Tian,et al."Seasonal characteristics of aerosol vertical structure and autumn enhancement of non-spherical particle over the semi-arid region of northwest China".ATMOSPHERIC ENVIRONMENT 244(2021).