气候变化领域集成服务门户(CCPortal): Evolution of Organic Aerosol From Wood Smoke Influenced by Burning Phase and Solar Radiation

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DOI	10.1029/2021JD034534
	Evolution of Organic Aerosol From Wood Smoke Influenced by Burning Phase and Solar Radiation
	Li S.; Liu D.; Hu D.; Kong S.; Wu Y.; Ding S.; Cheng Y.; Qiu H.; Zheng S.; Yan Q.; Zheng H.; Hu K.; Zhang J.; Zhao D.; Liu Q.; Sheng J.; Ye J.; He H.; Ding D.
发表日期	2021
ISSN	2169897X
卷号	126 期号:8
英文摘要	Emissions of carbonaceous aerosols (black carbon [BC] and organic aerosol [OA]) from biomass burning have important climate and human health impacts. Not only the primary emissions are complicated by combustion phases, but also the evolution after emission is not well understood. In this study, single plumes from residential wood burning, extracted from either flaming or smoldering phase, were injected into our novel chamber, to investigate their evolution in real atmospheric conditions with or without solar radiation. Initial compositions of flaming or smoldering plumes were dominated by BC or OA respectively, with higher NOx emission in flaming. Replicable results showed that in light, smoldering plumes had faster secondary OA (SOA) formation than flaming, due to the higher emissions of volatile organic compounds in smoldering. Furanic and carboxylic acid compounds were found to be the main gaseous precursors and products, respectively. Evaporation and photooxidation concurrently caused increased oxidation in the beginning, but at a later stage of evolution, SOA evolution showed remarkable divergence: enhanced oxidation for smoldering but decreased for flaming plumes, leading to a higher oxygen-to-carbon ratio for smoldering than flaming up to 0.25. We found the higher NOx emission in flaming promoted the gaseous fragmentation reactions, while the seeding particles dominated by OA in smoldering may cause these contrasting tendencies of OA oxidation between combustion phases. Distinct particulate/gas emissions and resultant evolutions in producing SOA at different combustion phases should be therefore considered in evaluating the impacts of biomass burning emissions. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Biomass burning; Combustion phases; Plume evolution; Secondary organic aerosols
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/185295
作者单位	Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China; School of Earth and Environmental Sciences, Centre for Atmospheric Sciences, University of Manchester, Manchester, United Kingdom; Department of Atmospheric Sciences, School of Environmental Studies, China University of Geosciences, Wuhan, China; Beijing Weather Modification Office, Beijing, China; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States
推荐引用方式 GB/T 7714	Li S.,Liu D.,Hu D.,et al. Evolution of Organic Aerosol From Wood Smoke Influenced by Burning Phase and Solar Radiation[J],2021,126(8).
APA	Li S..,Liu D..,Hu D..,Kong S..,Wu Y..,...&Ding D..(2021).Evolution of Organic Aerosol From Wood Smoke Influenced by Burning Phase and Solar Radiation.Journal of Geophysical Research: Atmospheres,126(8).
MLA	Li S.,et al."Evolution of Organic Aerosol From Wood Smoke Influenced by Burning Phase and Solar Radiation".Journal of Geophysical Research: Atmospheres 126.8(2021).