气候变化领域集成服务门户(CCPortal): High mass absorption efficiency of carbonaceous aerosols during the biomass burning season in Chiang Mai of northern Thailand

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DOI	10.1016/j.atmosenv.2020.117821
	High mass absorption efficiency of carbonaceous aerosols during the biomass burning season in Chiang Mai of northern Thailand
	Tao J.; Surapipith V.; Han Z.; Prapamontol T.; Kawichai S.; Zhang L.; Zhang Z.; Wu Y.; Li J.; Li J.; Yang Y.; Zhang R.
发表日期	2020
ISSN	1352-2310
卷号	240
英文摘要	Southeast Asia is one of the major regions of biomass burning in the world. To investigate the light absorption properties of carbonaceous aerosols produced from biomass burning, mass concentrations of PM2.5 and its major chemical compositions were obtained by filter sampling, and aerosol absorption coefficient (bap) at 370 nm (bap-370nm) and at 880 nm (bap-880nm) were synchronously determined for the sampled filters using a transmissometer in urban Chiang Mai of Northern Thailand during the dry season in 2019. On campaign average, the reconstructed PM2.5 mass from the measured chemical components accounted for 99% of the measured PM2.5 mass, in which organic matters (OM) accounted for 64 ± 10%. Hardwood burning was identified as the dominant source of carbonaceous aerosols. The measured aerosol absorption Ångström exponent (AAE) at 370–880 nm (AAE370–880nm) was 1.71 ± 0.24. Mass absorption efficiency (MAE) of elemental carbon (EC) and organic carbon (OC) was estimated using a multiple linear regression model between bap and mass concentrations of EC and OC, resulting in campaign-average values of 8.11 m2 g−1 and 0.24 m2 g−1 at 880 nm and 21.06 m2 g−1 and 2.57 m2 g−1 at 370 nm, respectively, which were evidently larger than those in other cities worldwide. The contributions of EC to bap in 370–880 nm spectrum region ranged from 49 ± 5% to 79 ± 3%, and those of OC ranged from 51 ± 5% to 21 ± 3%. Results from this study suggested a potentially significant impact of carbonaceous aerosols on direct radiative forcings in the dry season over Southeast Asia and downwind regions. © 2020 Elsevier Ltd
关键词	Absorption ångström exponent Biomass burning Carbonaceous aerosols Chemical composition Mass absorption efficiency
语种	英语
scopus关键词	Atmospheric radiation; Biomass; Drought; Efficiency; Light absorption; Linear regression; Meteorological instruments; Organic carbon; Absorption property; Aerosol absorption; Carbonaceous aerosol; Chemical component; Chemical compositions; Mass concentration; Multiple linear regression models; Radiative forcings; Aerosols; carbon; organic carbon; organic matter; absorption coefficient; absorption efficiency; aerosol; aerosol composition; biomass burning; concentration (composition); efficiency measurement; particulate matter; urban pollution; aerosol; Article; biomass; chemical composition; coating thickness; combustion; light absorption; low temperature; particulate matter; priority journal; radiative forcing; Southeast Asia; Thailand; Chiang Mai [Chiang Mai (PRV)]; Chiang Mai [Northern Region]; Northern Region [Thailand]; Thailand
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248972
作者单位	Institute for Environmental and Climate Research, Jinan University, Guangzhou, China; National Astronomical Research Institute of Thailand, Chiang Mai, Thailand; RCE-TEA, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Research Institute for Health Sciences, Chiang Mai University, Chiang Mai, Thailand; Air Quality Research Division, Science and Technology Branch, Environment and Climate Change Canada, Toronto, Canada; Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, the Ministry of Ecology and Environment of PR China, Guangzhou, China; University of Chinese Academy of Sciences, Beijing, China; University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan, China
推荐引用方式 GB/T 7714	Tao J.,Surapipith V.,Han Z.,et al. High mass absorption efficiency of carbonaceous aerosols during the biomass burning season in Chiang Mai of northern Thailand[J],2020,240.
APA	Tao J..,Surapipith V..,Han Z..,Prapamontol T..,Kawichai S..,...&Zhang R..(2020).High mass absorption efficiency of carbonaceous aerosols during the biomass burning season in Chiang Mai of northern Thailand.ATMOSPHERIC ENVIRONMENT,240.
MLA	Tao J.,et al."High mass absorption efficiency of carbonaceous aerosols during the biomass burning season in Chiang Mai of northern Thailand".ATMOSPHERIC ENVIRONMENT 240(2020).