Multi-Year Analyses of Columnar Aerosol Optical and Microphysical Properties in Xi'an, a Megacity in Northwestern China

doi:10.3390/rs10081169

IEECAS OpenIR > 粉尘与环境研究室

	Multi-Year Analyses of Columnar Aerosol Optical and Microphysical Properties in Xi'an, a Megacity in Northwestern China
	Su, Xiaoli 1,2; Cao, Junji 1,2; Li, Zhengqiang 3; Li, Kaitao 3; Xu, Hua 3; Liu, Suixin 1,2; Fan, Xuehua 4
	2018-08-01
发表期刊	REMOTE SENSING
卷号	10 期号:8
文章类型	Article
摘要	A thorough understanding of aerosol optical properties and their spatio-temporal variability are required to accurately evaluate aerosol effects in the climate system. In this study, a multi-year study of aerosol optical and microphysical properties was firstly performed in Xi'an based on three years of sun photometer remote sensing measurements from 2012 to 2015. The multi-year average of aerosol optical depth (AOD) at 440 nm was about 0.88 +/- 0.24 (mean +/- SD), while the averaged angstrom ngstrom Exponent (AE) between 440 and 870 nm was 1.02 +/- 0.15. The mean value of single scattering albedo (SSA) was around 0.89 +/- 0.03. Aerosol optical depth and AE showed different seasonal variation patterns. Aerosol optical depth was slightly higher in winter (0.99 +/- 0.36) than in other seasons (similar to 0.85 +/- 0.20), while AE showed its minimum in spring (0.85 +/- 0.05) due to the impact of dust episodes. The seasonal variations of volume particle size distribution, spectral refractive index, SSA, and asymmetry factor were also analyzed to characterize aerosols over this region. Based on the aerosol products derived from sun photometer measurements, the classification of aerosol types was also conducted using two different methods in this region. Results show that the dominant aerosol types are absorbers in all seasons, especially in winter, demonstrating the strong absorptivity of aerosols in Xi'an.
关键词	Optical And Microphysical Properties Sun Photometer Semi-arid Megacity
WOS标题词	Science & Technology ; Technology
DOI	10.3390/rs10081169
关键词[WOS]	SKY RADIANCE MEASUREMENTS ; REMOTE-SENSING MEASUREMENTS ; SUN PHOTOMETER MEASUREMENTS ; BLACK CARBON ; SUNPHOTOMETER MEASUREMENTS ; NORTHERN CHINA ; AERONET ; ATMOSPHERE ; NETWORK ; REGION
收录类别	SCI
语种	英语
WOS研究方向	Remote Sensing
WOS类目	Remote Sensing
WOS记录号	WOS:000443618100005
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/5347
专题	粉尘与环境研究室
作者单位	1.Chinese Acad Sci, KLACP, Xian 710061, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, LAGEO, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Su, Xiaoli,Cao, Junji,Li, Zhengqiang,et al. Multi-Year Analyses of Columnar Aerosol Optical and Microphysical Properties in Xi'an, a Megacity in Northwestern China[J]. REMOTE SENSING,2018,10(8).
APA	Su, Xiaoli.,Cao, Junji.,Li, Zhengqiang.,Li, Kaitao.,Xu, Hua.,...&Fan, Xuehua.(2018).Multi-Year Analyses of Columnar Aerosol Optical and Microphysical Properties in Xi'an, a Megacity in Northwestern China.REMOTE SENSING,10(8).
MLA	Su, Xiaoli,et al."Multi-Year Analyses of Columnar Aerosol Optical and Microphysical Properties in Xi'an, a Megacity in Northwestern China".REMOTE SENSING 10.8(2018).