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DOI | 10.1038/NGEO2901 |
Black-carbon absorption enhancement in the atmosphere determined by particle mixing state | |
Liu, Dantong1; Whitehead, James1; Alfarra, M. Rami1,2; Reyes-Villegas, Ernesto1; Spracklen, Dominick V.3; Reddington, Carly L.3; Kong, Shaofei1,4,5; Williams, Paul I.1,2; Ting, Yu-Chieh1; Haslett, Sophie1; Taylor, Jonathan W.1; Flynn, Michael J.1; Morgan, William T.1; McFiggans, Gordon1; Coe, Hugh1; Allan, James D.1,2 | |
2017-03-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Peoples R China |
英文摘要 | Atmospheric black carbon makes an important but poorly quantified contribution to the warming of the global atmosphere. Laboratory and modelling studies have shown that the addition of non-black-carbon materials to black-carbon particles may enhance the particles' light absorption by 50 to 60% by refracting and reflecting light. Real-world experimental evidence for this 'lensing' effect is scant and conflicting, showing that absorption enhancements can be less than 5% or as large as 140%. Here we present simultaneous quantifications of the composition and optical properties of individual atmospheric black-carbon particles. We show that particles with a mass ratio of non-black carbon to black carbon of less than 1.5, which is typical of fresh traffic sources, are best represented as having no absorption enhancement. In contrast, black-carbon particles with a ratio greater than 3, which is typical of biomass-burning emissions, are best described assuming optical lensing leading to an absorption enhancement. We introduce a generalized hybrid model approach for estimating scattering and absorption enhancements based on laboratory and atmospheric observations. We conclude that the occurrence of the absorption enhancement of black-carbon particles is determined by the particles' mass ratio of non-black carbon to black carbon. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395791400009 |
WOS关键词 | SOURCE APPORTIONMENT ; SOOT PHOTOMETER ; OPTICAL-PROPERTIES ; LIGHT-SCATTERING ; BROWN CARBON ; AEROSOL ; MICROPHYSICS ; DENSITY ; WINTERTIME ; LONDON |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35169 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Manchester, Sch Earth & Environm Sci, Ctr Atmospher Sci, Manchester M13 9PL, Lancs, England; 2.Natl Ctr Atmospher Sci, Manchester M13 9PL, Lancs, England; 3.Univ Leeds, Inst Climate & Atmospher Sci, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; 4.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing 210044, Jiangsu, Peoples R China; 5.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Dantong,Whitehead, James,Alfarra, M. Rami,et al. Black-carbon absorption enhancement in the atmosphere determined by particle mixing state[J]. NATURE GEOSCIENCE,2017,10(3). |
APA | Liu, Dantong.,Whitehead, James.,Alfarra, M. Rami.,Reyes-Villegas, Ernesto.,Spracklen, Dominick V..,...&Allan, James D..(2017).Black-carbon absorption enhancement in the atmosphere determined by particle mixing state.NATURE GEOSCIENCE,10(3). |
MLA | Liu, Dantong,et al."Black-carbon absorption enhancement in the atmosphere determined by particle mixing state".NATURE GEOSCIENCE 10.3(2017). |
条目包含的文件 | 条目无相关文件。 |
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