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DOI | 10.1029/2021GL094522 |
Measurements of the diversity of shape and mixing state for ambient black carbon particles | |
Kang Hu; Dantong Liu; Ping Tian; Yangzhou Wu; Zhaoze Deng; Yunfei Wu; Delong Zhao; Ruijie Li; Jiujiang Sheng; Mengyu Huang; Deping Ding; Weijun Li; Yuanyuan Wang; Yu Wu | |
2021-08-25 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The complex particle morphology of black carbon (BC) induces considerable uncertainties in constraining its optical properties. In particular, the diversity of how the BC core and coating are combined is yet to be resolved due to the lack of direct ambient quantification. In this study, by concurrent measurements of the electrical mobility diameter (Dm) and optical volume-equivalent diameter (Dve), the dynamic shape factor (χ=Dm/Dve) of ambient BC-containing particles at different mixing states was quantified for the first time. BC in urban Beijing showed a widely distributed χ of 1.4±0.43. Particles with larger refractory BC (rBC) cores showed higher non-sphericity and higher χ. A ten-fold increase in the volume ratio of the coating over rBC (VR) could decrease the fraction of fractal BC by 36%. This study proposed a χ-VR space to describe the particle shape, which is able to include all ambient quantified BC morphologies in optical model. |
领域 | 气候变化 |
URL | 查看原文 |
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/336683 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Kang Hu,Dantong Liu,Ping Tian,et al. Measurements of the diversity of shape and mixing state for ambient black carbon particles[J]. Geophysical Research Letters,2021. |
APA | Kang Hu.,Dantong Liu.,Ping Tian.,Yangzhou Wu.,Zhaoze Deng.,...&Yu Wu.(2021).Measurements of the diversity of shape and mixing state for ambient black carbon particles.Geophysical Research Letters. |
MLA | Kang Hu,et al."Measurements of the diversity of shape and mixing state for ambient black carbon particles".Geophysical Research Letters (2021). |
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