Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 4
Articles | Volume 26, issue 4
https://doi.org/10.5194/acp-26-2881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-2881-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 4
Research article
 | 
26 Feb 2026
Research article |  | 26 Feb 2026

Effects of mass ratio heterogeneity and coating-related optical characteristics on the light absorption enhancement of black carbon-containing particles

Jing Wei, Jin-Mei Ding, Yao Song, Xiao-Yuan Wang, Xiang-Yu Pei, Sheng-Chen Xu, Fei Zhang, Zheng-Ning Xu, Xu-Dong Tian, Bin-Ye Xu, and Zhi-Bin Wang

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Short summary
Black carbon (BC) is a light-absorbing particle that contributes to atmospheric warming, but its radiative impact remains highly uncertain. We conducted field measurements in Hangzhou, China, to examine how the mass ratio (MR, coating-to-BC) affects light absorption enhancement (Eabs). Our results show that widely used optical models overestimate Eabs, especially under clean conditions. A new MR-dependent parameterization improves model accuracy and reduces this uncertainty.
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