干旱区生态环境知识资源中心(Arid): Transport Patterns, Size Distributions, and Depolarization Characteristics of Dust Particles in East Asia in Spring 2018

Arid

DOI	10.1029/2019JD031752
	Transport Patterns, Size Distributions, and Depolarization Characteristics of Dust Particles in East Asia in Spring 2018
	Tian, Yu; Pan, Xiaole; Wang, Zhe; Wang, Dawei; Ge, Baozhu; Liu, Xiaoyong; Zhang, Yuting; Liu, Hang; Lei, Shandong; Yang, Ting; Fu, Pingqing; Sun, Yele; Wang, Zifa
通讯作者	Pan, XL
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN	2169-897X
EISSN	2169-8996
出版年	2020
卷号	125 期号:16
英文摘要	The long-range transport of Asian dust and its complex interaction with anthropogenic pollutants have a significant yet poorly quantified effect on the global climate. In this study, dust events were observed based on an optical particle counter with a polarization detection module at an urban site in North China. The temporal variations in the size distribution and morphological changes of dust particles were analyzed. The results demonstrate that the dust events were induced by a deep Siberian low-pressure anomaly and/or Mongolian cyclone in the low troposphere. The morphology of dust particles, as indicated by the depolarization ratio (delta = s/(s + p), the ratio of the parallel signal to the total backscattering signal), varied significantly at different transport heights. A decreasing tendency was found when dust was trapped within the boundary layer over polluted areas, particularly when the atmospheric loading of pollutants and the relative humidity were high. During a typical polluted dust case, the delta value of mineral dust (Dp = 5 mu m) decreased by 39%, as the conditions were stagnant in East China, consistent with the Cloud-Aerosol LIDAR with Orthogonal Polarization results. The morphological variation was evaluated according to the aspect ratio, presuming that the dust particles were ellipsoidal. The interaction between dust particles and water vapor could lead to an increase of at least 6% in volume when the relative humidity increased up to 90%. An aerosol classification based on delta values and size information could be performed to estimate the contributions of different aerosol types to pollution days. The results should be helpful for evaluating satellite-borne and ground-based light detection and ranging data analyses.
英文关键词	depolarization ratio morphology dust particles mixing state
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000565638400028
WOS关键词	MINERAL DUST ; HETEROGENEOUS REACTIONS ; OPTICAL-PROPERTIES ; AEROSOL-PARTICLES ; DESERT DUST ; DISPERSION MODEL ; CLOUD CHAMBER ; MIXING STATE ; HUMAN HEALTH ; IMPACT
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	中国科学院大气物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326011
作者单位	[Tian, Yu; Pan, Xiaole; Wang, Zhe; Wang, Dawei; Ge, Baozhu; Zhang, Yuting; Liu, Hang; Lei, Shandong; Yang, Ting; Sun, Yele; Wang, Zifa] Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing, Peoples R China; [Tian, Yu; Ge, Baozhu; Liu, Xiaoyong; Zhang, Yuting; Liu, Hang; Lei, Shandong; Yang, Ting; Sun, Yele; Wang, Zifa] Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China; [Wang, Zhe] Kyushu Univ, Res Inst Appl Mech RIAM, Fukuoka, Japan; [Liu, Xiaoyong; Wang, Zifa] Chinese Acad Sci, Ctr Excellence Reg Atmospher Environm, Inst Urban Environm, Xiamen, Peoples R China; [Fu, Pingqing] Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China
推荐引用方式 GB/T 7714	Tian, Yu,Pan, Xiaole,Wang, Zhe,et al. Transport Patterns, Size Distributions, and Depolarization Characteristics of Dust Particles in East Asia in Spring 2018[J]. 中国科学院大气物理研究所,2020,125(16).
APA	Tian, Yu.,Pan, Xiaole.,Wang, Zhe.,Wang, Dawei.,Ge, Baozhu.,...&Wang, Zifa.(2020).Transport Patterns, Size Distributions, and Depolarization Characteristics of Dust Particles in East Asia in Spring 2018.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(16).
MLA	Tian, Yu,et al."Transport Patterns, Size Distributions, and Depolarization Characteristics of Dust Particles in East Asia in Spring 2018".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.16(2020).