Measurement report: Intensive biomass burning emissions and rapid nitrate formation drive severe haze formation in the Sichuan Basin, China – insights from aerosol mass spectrometry

Bao, Zhier; Zhang, Xinyi; Li, Qing; Zhou, Jiawei; Shi, Guangming; Zhou, Li; Yang, Fumo; Xie, Shaodong; Zhang, Dan; Zhai, Chongzhi; Li, Zhenliang; Peng, Chao; Chen, Yang

doi:https://doi.org/10.5194/acp-23-1147-2023

Articles | Volume 23, issue 2

https://doi.org/10.5194/acp-23-1147-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-1147-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 2

Measurement report

|

23 Jan 2023

Measurement report |

| 23 Jan 2023

Measurement report: Intensive biomass burning emissions and rapid nitrate formation drive severe haze formation in the Sichuan Basin, China – insights from aerosol mass spectrometry

Zhier Bao, Xinyi Zhang, Qing Li, Jiawei Zhou, Guangming Shi, Li Zhou, Fumo Yang, Shaodong Xie, Dan Zhang, Chongzhi Zhai, Zhenliang Li, Chao Peng, and Yang Chen

Supplement

https://doi.org/10.5194/acp-23-1147-2023-supplement

Data sets

Chemical composition of PM2.5 for Deyang campaign Bao Zhi'er, Zhang Xinyi, Li Qing, Zhou Jiawei, Shi Guangming, Zhou Li, Yang Fumo, Xie Shaodong, Zhang Dan, Zhai Chongzhi, Li Zhenliang, Peng Chao, and Chen Yang https://doi.org/10.5281/zenodo.6965551

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Short summary

We characterised non-refractory fine particulate matter (PM_2.5) during winter in the Sichuan Basin (SCB), Southwest China. The factors driving severe aerosol pollution were revealed, highlighting the importance of rapid nitrate formation and intensive biomass burning. Nitrate was primarily formed through gas-phase oxidation during daytime and aqueous-phase oxidation during nighttime. Controlling nitrate and biomass burning will benefit the mitigation of haze formation in the SCB.