Measurement report: Optical characterization, seasonality, and sources of brown carbon in fine aerosols from Tianjin, North China:  year-round observations

Dong, Zhichao; Pavuluri, Chandra Mouli; Li, Peisen; Xu, Zhanjie; Deng, Junjun; Zhao, Xueyan; Zhao, Xiaomai; Fu, Pingqing; Liu, Cong-Qiang

doi:https://doi.org/10.5194/acp-24-5887-2024

Articles | Volume 24, issue 10

https://doi.org/10.5194/acp-24-5887-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-5887-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 10

Measurement report

|

23 May 2024

Measurement report |

| 23 May 2024

Measurement report: Optical characterization, seasonality, and sources of brown carbon in fine aerosols from Tianjin, North China: year-round observations

Zhichao Dong, Chandra Mouli Pavuluri, Peisen Li, Zhanjie Xu, Junjun Deng, Xueyan Zhao, Xiaomai Zhao, Pingqing Fu, and Cong-Qiang Liu

Supplement

https://doi.org/10.5194/acp-24-5887-2024-supplement

Data sets

Year-round observations of the optical properties of brown carbon in fine aerosols at Tianjin, North China Zhichao Dong et al. https://doi.org/10.5281/zenodo.7316371

Year-round observations of bulk components and 13C and 15N isotope ratios of fine aerosols at Tianjin, North China Zhichao Dong et al. https://doi.org/10.5281/zenodo.5140861

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Comprehensive study of optical properties of brown carbon (BrC) in fine aerosols from Tianjin, China, implied that biological emissions are major sources of BrC in summer, whereas fossil fuel combustion and biomass burning emissions are in cold periods. The direct radiation absorption caused by BrC in short wavelengths contributed about 40 % to that caused by BrC in 300–700 nm. Water-insoluble but methanol-soluble BrC contains more protein-like chromophores (PLOM) than that of water-soluble BrC.