Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 18
Articles | Volume 25, issue 18
https://doi.org/10.5194/acp-25-11051-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-11051-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 18
Research article
 | 
23 Sep 2025
Research article |  | 23 Sep 2025

Laboratory studies on the optical, physical, and chemical properties of fresh and aged biomass burning aerosols

Zheng Yang, Qiaoqiao Wang, Qiyuan Wang, Nan Ma, Jie Tian, Yaqing Zhou, Ge Xu, Miao Gao, Xiaoxian Zhou, Yang Zhang, Weikang Ran, Ning Yang, Jiangchuan Tao, Juan Hong, Yunfei Wu, Junji Cao, Hang Su, and Yafang Cheng

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Short summary
Our results demonstrate that the reduction in mass absorption efficiency from biomass burning is mainly driven by the decline in the imaginary part, with particle size playing a minor role. And light absorption of oxygenated brown carbon (BrC) increases significantly with aging, but hydrocarbon-like BrC decreases over time. These results emphasize the necessity to classify BrC into different groups based on their mass absorption efficiency and atmospheric behavior in climate models.
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