气候变化领域集成服务门户(CCPortal): Unexpected High Absorption of Atmospheric Aerosols Over a Western Tibetan Plateau Site in Summer

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DOI	10.1029/2020JD033286
	Unexpected High Absorption of Atmospheric Aerosols Over a Western Tibetan Plateau Site in Summer
	Zhang L.; Tang C.; Huang J.; Du T.; Guan X.; Tian P.; Shi J.; Cao X.; Huang Z.; Guo Q.; Zhang H.; Wang M.; Zeng H.; Wang F.; Dolkar P.
发表日期	2021
ISSN	2169897X
卷号	126 期号:7
英文摘要	The assessment of atmospheric aerosol radiative effects in the Tibetan Plateau (TP) suffers from large uncertainties due to limited understanding of aerosol physicochemical properties. To quantify aerosol optical properties, size distributions, and chemical compositions in the western TP, an intensive field campaign was carried out at Shiquanhe National Reference Climatological Station from July 8 to August 2, 2019. Unexpected low single scattering albedo (SSA) at 870 nm was found for the fine aerosols with an average value of 0.73 ± 0.18. SSA was even lower than 0.60 in the morning when fine aerosols peaked, indicating high absorption of the fine aerosols induced by anthropogenic activities. Coarse mode aerosols accounted for 70.58% ± 14.98% of the total volume concentration and mineral dust was the most abundant species in total suspended particles with a mass fraction of 48.7%. Fine mode aerosol concentrations showed little dependence on wind speed while coarse mode aerosols and metallic element concentrations exhibited strong positive correlations with wind speed, indicating the importance of wind-blown dust particles. The present study for the first time quantified key aerosol parameters in the western TP and unexpected high absorption of atmospheric aerosols were found over the site in summer. Our results suggest the need to carefully consider the radiative effects caused by aerosol absorption in the TP region. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	aerosol absorption; atmospheric aerosols; chemical components; mineral dust; physical properties; Tibetan Plateau
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185329
作者单位	Collaborative Innovation Center for Western Ecological Safety, Lanzhou University, Lanzhou, China; Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, China; Ali Meteorological Administration, Ali, China
推荐引用方式 GB/T 7714	Zhang L.,Tang C.,Huang J.,et al. Unexpected High Absorption of Atmospheric Aerosols Over a Western Tibetan Plateau Site in Summer[J],2021,126(7).
APA	Zhang L..,Tang C..,Huang J..,Du T..,Guan X..,...&Dolkar P..(2021).Unexpected High Absorption of Atmospheric Aerosols Over a Western Tibetan Plateau Site in Summer.Journal of Geophysical Research: Atmospheres,126(7).
MLA	Zhang L.,et al."Unexpected High Absorption of Atmospheric Aerosols Over a Western Tibetan Plateau Site in Summer".Journal of Geophysical Research: Atmospheres 126.7(2021).