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

doi:10.3390/rs10081169

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 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
	Fan, Xuehua 1; Xu, Hua 4; Li, Kaitao 4; Su, Xiaoli 2,3; Li, Zhengqiang 4; Liu, Suixin 2,3; Cao, Junji 2,3
刊名	REMOTE SENSING
	2018-08-01
卷号	10 期号:8
关键词	Optical And Microphysical Properties Sun Photometer Semi-arid Megacity
DOI	10.3390/rs10081169
文献子类	Article
英文摘要	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.
WOS关键词	SKY RADIANCE MEASUREMENTS ; REMOTE-SENSING MEASUREMENTS ; SUN PHOTOMETER MEASUREMENTS ; BLACK CARBON ; SUNPHOTOMETER MEASUREMENTS ; NORTHERN CHINA ; AERONET ; ATMOSPHERE ; NETWORK ; REGION
WOS研究方向	Remote Sensing
语种	英语
WOS记录号	WOS:000443618100005
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5347]
专题	地球环境研究所_粉尘与环境研究室
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, LAGEO, Beijing 100029, Peoples R China 2.Chinese Acad Sci, KLACP, Xian 710061, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Fan, Xuehua,Xu, Hua,Li, Kaitao,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	Fan, Xuehua.,Xu, Hua.,Li, Kaitao.,Su, Xiaoli.,Li, Zhengqiang.,...&Cao, Junji.(2018).Multi-Year Analyses of Columnar Aerosol Optical and Microphysical Properties in Xi'an, a Megacity in Northwestern China.REMOTE SENSING,10(8).
MLA	Fan, Xuehua,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).