气候变化领域集成服务门户(CCPortal): Brown carbon's emission factors and optical characteristics in household biomass burning: Developing a novel algorithm for estimating the contribution of brown carbon

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DOI	10.5194/acp-21-2329-2021
	Brown carbon's emission factors and optical characteristics in household biomass burning: Developing a novel algorithm for estimating the contribution of brown carbon
	Sun J.; Zhang Y.; Zhi G.; Hitzenberger R.; Jin W.; Chen Y.; Wang L.; Tian C.; Li Z.; Chen R.; Xiao W.; Cheng Y.; Yang W.; Yao L.; Cao Y.; Huang D.; Qiu Y.; Xu J.; Xia X.; Yang X.; Zhang X.; Zong Z.; Song Y.; Wu C.
发表日期	2021
ISSN	1680-7316
起始页码	2329
结束页码	2341
卷号	21 期号:4
英文摘要	Recent studies have highlighted the importance of brown carbon (BrC) in various fields, particularly relating to climate change. The incomplete combustion of biomass in open and contained burning conditions is believed to be a significant contributor to primary BrC emissions. So far, few studies have reported the emission factors of BrC from biomass burning, and few studies have specifically addressed which form of light-absorbing carbon, such as black carbon (BC) or BrC, plays a leading role in the total solar light absorption by biomass burning. In this study, the optical integrating sphere (IS) approach was used, with carbon black and humic acid sodium salt as reference materials for BC and BrC, respectively, to distinguish BrC from BC on filter samples. A total of 11 widely used biomass types in China were burned in a typical stove to simulate the real household combustion process. (i) Large differences existed in the emission factors of BrC (EFBrC) among the tested biomass fuels, with a geometric mean EFBrC of 0.71 g kg-1 (0.24-2.09). Both the plant type (herbaceous or ligneous) and burning style (raw or briquetted biomass) might influence the value of EFBrC. The observed reduction in the emissions of light-absorbing carbon (LAC) confirmed an additional benefit of biomass briquetting in climate change mitigation. (ii) The calculated annual BrC emissions from China's household biomass burning amounted to 712 Gg, higher than the contribution from China's household coal combustion (592 Gg). (iii) The average absorption Ångström exponent (AAE) was (2.46±0.53), much higher than that of coal-chunk combustion smoke (AAE=1.30±0.32). (iv) For biomass smoke, the contribution of absorption by BrC to the total absorption by BC+BrC across the strongest solar spectral range of 350-850 nm (FBrC) was 50.8 %. This is nearly twice that for BrC in smoke from household coal combustion (26.5 %). (v) Based on this study, a novel algorithm was developed for estimating the FBrC for perhaps any combustion source (FBrC = 0:5519lnAAE+0.0067, R2 = 0.999); the FBrC value for all global biomass burning (openCcontained) (FBrC-entire) was 64.5% (58.5 %-69.9 %). This corroborates the dominant role of BrC in total biomass burning absorption. Therefore, the inclusion of BrC is not optional but indispensable when considering the climate energy budget, particularly for biomass burning emissions (contained and open). © 2021 EDP Sciences. All rights reserved.
语种	英语
scopus关键词	absorption; algorithm; biomass burning; black carbon; brown carbon; carbon emission; climate change; combustion; cooking appliance; humic acid; optical property; China
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247140
作者单位	State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Physical Education, Shangrao Normal University, Shangrao, 334001, China; University of Vienna, Faculty of Physics, Boltzmanngasse 5, Vienna, 1090, Austria; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; College of Physical and Health Education, East China Jiaotong University, Nanchang, 330006, China; School of Physical Education, Jiangxi Science and Technology Normal University, Nanchang, 330006, China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150001, China; Jiangxi Sports H...
推荐引用方式 GB/T 7714	Sun J.,Zhang Y.,Zhi G.,et al. Brown carbon's emission factors and optical characteristics in household biomass burning: Developing a novel algorithm for estimating the contribution of brown carbon[J],2021,21(4).
APA	Sun J..,Zhang Y..,Zhi G..,Hitzenberger R..,Jin W..,...&Wu C..(2021).Brown carbon's emission factors and optical characteristics in household biomass burning: Developing a novel algorithm for estimating the contribution of brown carbon.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(4).
MLA	Sun J.,et al."Brown carbon's emission factors and optical characteristics in household biomass burning: Developing a novel algorithm for estimating the contribution of brown carbon".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.4(2021).