Measurement report: The importance of biomass burning in light extinction and direct radiative effect of urban aerosol during the COVID-19 lockdown in Xi'an, China

Tian, Jie; Wang, Qiyuan; Liu, Huikun; Ma, Yongyong; Liu, Suixin; Zhang, Yong; Ran, Weikang; Han, Yongming; Cao, Junji

doi:https://doi.org/10.5194/acp-22-8369-2022

Articles | Volume 22, issue 12

https://doi.org/10.5194/acp-22-8369-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-22-8369-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 12

Measurement report

|

29 Jun 2022

Measurement report |

| 29 Jun 2022

Measurement report: The importance of biomass burning in light extinction and direct radiative effect of urban aerosol during the COVID-19 lockdown in Xi'an, China

Jie Tian, Qiyuan Wang, Huikun Liu, Yongyong Ma, Suixin Liu, Yong Zhang, Weikang Ran, Yongming Han, and Junji Cao

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https://doi.org/10.5194/acp-22-8369-2022-supplement

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Data for: "Measurement report: The importance of biomass burning in light extinction and direct radiative effect of urban aerosol during the COVID-19 lockdown in Xi'an, China" Jie Tian, Qiyuan Wang, Huikun Liu, Yongyong Ma, Suixin Liu, Yong Zhang, Weikang Ran, Yongming Han, and Junji Cao https://doi.org/10.5281/zenodo.6457841

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Short summary

We investigated aerosol optical properties and the direct radiative effect (DRE) at an urban site in China before and during the COVID-19 lockdown. The total light extinction coefficient (b_ext) decreased under emission control measures; however, b_ext from biomass burning increased due to the undiminished need for residential cooking and heating. Biomass burning, rather than traffic-related emissions, became the largest positive effect contributor to aerosol DRE in the lockdown.