Characteristics of Aerosol Optical Properties and Their Potential Source in Hefei in Autumn

doi:10.3964/j.issn.1000-0593(2021)10-3014-07

	Characteristics of Aerosol Optical Properties and Their Potential Source in Hefei in Autumn
	Ou Jin-ping 1; Liu Hao-ran 1; Zhu Peng-cheng 1; Xu Heng 1; Wang Zhuang 2; Tian Yuan 1; Liu Guo-hua 1; Li Qi-hua 1
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2021-10-01
卷号	41
关键词	Aerosol Wind dependence Scattering coefficient Hefei Potential source region
ISSN号	1000-0593
DOI	10.3964/j.issn.1000-0593(2021)10-3014-07
通讯作者	Liu Hao-ran(hrl@ahu.edu.cn)
英文摘要	Aerosols directly disturbs the earth' s radiation budget and climate by absorbing and scattering solar radiation, indirectly affecting the formation of cloud condensation nuclei, and further changing the optical properties. A field study was carried out using an aethelometer and nephelometer from 5 November to 10 December 2019 in Hefei. Based on the meteorological data, diurnal variation and wind dependence of the optical properties of aerosols were analyzed. The average PM2.5, aerosol scattering coefficient (sigma(sp)), absorption coefficient (sigma(ap)) in autumn in Hefei were (43 +/- 25) mu g . m(-3), (238. 70 +/- 161. 52) Mm(-1), and (32. 04 +/- 17. 01) Mm(-1), respectively, and the trend of time variation of sigma(sp) and was consistent with PM2.5. The contents of PM2.5 , sigma(sp), and sigma(sp) have significant double-peak daily variation characteristics, peaking at 8:00-10:00 and 20:00-21:00, which was mainly related to traffic emissions and meteorological conditions. The wind dependence of aerosol optical properties in Hefei mainly reflects that the weather conditions of low temperature, high humidity and low wind are conducive to the accumulation and formation of pollutants, but the higher wind speed is also easy to transport pollutants around. The sigma(sp) and sigma(sp) were mainly affected by the pollution air mass in the northwest wind direction. Based on the HYSPLIT backward trajectory model, the spatial characteristics of different transport pathways were analyzed by cluster analysis, and the potential source contribution method (PSCF) and concentration weight trajectory method (CWT) were used to investigate the potential source area distribution of Hefei. The results showed that the polluted air masses mainly originated from the northwest of Hefei. The highest proportion of air masses 1 and 3 were from Inner Mongolia Autonomous Region and Xinjiang Uygur Autonomous Region. Air mass 2, which contributes more to the scattering coefficient, comes from Baoji City, Shaanxi Province, and air mass 6, which originates from Inner Mongolia, passes through Shanxi, Shandong and Jiangsu Provinces, and arrives at Hefei from the southeast of Anhui Province, carrying more pollutants. PSCF larger value was mainly distributed in the northwest and southwest of Hefei. The high CWT values in autumn in Hefei were mainly distributed in northeast Henan Province, southwest Shandong Province and North Anhui Province. In particular, Jining city in Shandong Province and Shangqiu city in Henan Province are the potential sources of air quality in Hefei.
WOS关键词	WINTER
WOS研究方向	Spectroscopy
语种	英语
出版者	OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS
WOS记录号	WOS:000715857400004
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126724]
专题	中国科学院合肥物质科学研究院
通讯作者	Liu Hao-ran
作者单位	1.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China 2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Hefei Inst Phys Sci, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Ou Jin-ping,Liu Hao-ran,Zhu Peng-cheng,et al. Characteristics of Aerosol Optical Properties and Their Potential Source in Hefei in Autumn[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2021,41.
APA	Ou Jin-ping.,Liu Hao-ran.,Zhu Peng-cheng.,Xu Heng.,Wang Zhuang.,...&Li Qi-hua.(2021).Characteristics of Aerosol Optical Properties and Their Potential Source in Hefei in Autumn.SPECTROSCOPY AND SPECTRAL ANALYSIS,41.
MLA	Ou Jin-ping,et al."Characteristics of Aerosol Optical Properties and Their Potential Source in Hefei in Autumn".SPECTROSCOPY AND SPECTRAL ANALYSIS 41(2021).