干旱区生态环境知识资源中心(Arid): Analysis of aerosol optical properties in a Lanzhou suburb of China

Arid

DOI	10.1016/j.atmosres.2020.105098
	Analysis of aerosol optical properties in a Lanzhou suburb of China
	Gao, Xingai; Cao, Xianjie; Wang, Jiayun; Guo, Qi; Du, Tao; Zhang, Lei
通讯作者	Cao, XJ
来源期刊	ATMOSPHERIC RESEARCH
ISSN	0169-8095
EISSN	1873-2895
出版年	2020
卷号	246
英文摘要	In order to accurately identify feature layer and monitor the spatial and temporal distribution of pollutants, the inversion method of lidar measurement based on multiscale algorithm is proposed in this paper. The detection of clouds, aerosols and dust layers using a modified retrieval algorithm for a dual-wavelength lidar is presented at the Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL). Moreover, the aerosol optical depth calculated from the Klett-Fernald algorithm obviously excludes the influence of clouds. Two cases were presented to demonstrate that the modified algorithm can capture low-clouds and dust layers well. The aerosol optical properties including aerosol optical depth (AOD), effective radius, depolarization ratio and black carbon aerosol mass concentration are analysed in terms of their monthly and seasonal variations. It is shown that the maximum of AOD, depolarization ratio and effective radius were found in spring (0.42 +/- 0.35, 0.17 +/- 0.1, 0.63 +/- 0.24 pm) and the minimums were found in summer and autumn. The black carbon aerosol mass concentration varies significantly throughout year, with the maximum value in winter (2.35 +/- 1.56 mu g m(-3)) and a secondary maximum in autumn (1.93 +/- 1.28 mu g m(-3)), a minimum (1.03 +/- 0.76 mu g m(-3)) in spring. The vertical distribution of extinction coefficient has a peak near 1 km (0.1 km(-1)). The depolarization ratio vertically distributes at approximately 0.15. In general, pollution is more serious in spring and winter at SACOL, the former pollutants are coarse-mode non-spherical dust particles which originate from the Taklimakan Desert and the Gobi Desert, and the latter are fine mode spherical black carbon aerosols and coarse-mode non-spherical dust aerosols which are the results of both local combustion and longdistance transport. The dust particles existed high-allude transport in spring and winter at SACOL.
英文关键词	Aerosol Black carbon Dust Feature layer recognition Optical properties
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000581845700005
WOS关键词	DEPOLARIZATION RATIO ; LIDAR MEASUREMENTS ; LAYER DETECTION ; LOESS PLATEAU ; SAHARAN DUST ; RIVER DELTA ; CLOUD ; EXTINCTION ; ALGORITHM ; VARIABILITY
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	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/2XILL650/327087
作者单位	[Gao, Xingai; Cao, Xianjie; Wang, Jiayun; Guo, Qi; Du, Tao; Zhang, Lei] Lanzhou Univ, Key Lab Semiarid Climate Change, Minist Educ, Coll Atmospher Sci, Lanzhou, Peoples R China; [Gao, Xingai] Shanxi Prov Inst Meteorol Sci, Taiyuan, Peoples R China
推荐引用方式 GB/T 7714	Gao, Xingai,Cao, Xianjie,Wang, Jiayun,et al. Analysis of aerosol optical properties in a Lanzhou suburb of China[J]. 兰州大学,2020,246.
APA	Gao, Xingai,Cao, Xianjie,Wang, Jiayun,Guo, Qi,Du, Tao,&Zhang, Lei.(2020).Analysis of aerosol optical properties in a Lanzhou suburb of China.ATMOSPHERIC RESEARCH,246.
MLA	Gao, Xingai,et al."Analysis of aerosol optical properties in a Lanzhou suburb of China".ATMOSPHERIC RESEARCH 246(2020).