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.
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.
the Creative Commons Attribution 4.0 License.
Measurement report
| 
29 Jun 2022
Measurement report |
| 29 Jun 2022
| 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
Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
CAS Center for Excellence in Quaternary Science and Global Change,
Xi'an 710061, China
Qiyuan Wang
CORRESPONDING AUTHOR
Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
CAS Center for Excellence in Quaternary Science and Global Change,
Xi'an 710061, China
National Observation and Research Station of Regional Ecological
Environment Change and Comprehensive Management in the Guanzhong Plain,
Shaanxi, Xi'an 710061, China
Huikun Liu
Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
Yongyong Ma
Meteorological Institute of Shaanxi Province, Xi'an 710015, China
Suixin Liu
Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
CAS Center for Excellence in Quaternary Science and Global Change,
Xi'an 710061, China
Yong Zhang
Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
Weikang Ran
Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
Yongming Han
Key Laboratory of Aerosol Chemistry and Physics, State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China
CAS Center for Excellence in Quaternary Science and Global Change,
Xi'an 710061, China
National Observation and Research Station of Regional Ecological
Environment Change and Comprehensive Management in the Guanzhong Plain,
Shaanxi, Xi'an 710061, China
Junji Cao
CORRESPONDING AUTHOR
Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing
100029, China
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Cited
11 citations as recorded by crossref.
- Molecular compositions and sources of organic aerosols at a rural site on the Guanzhong Plain, Northwest China: The importance of biomass burning Y. Liu et al. https://doi.org/10.1016/j.partic.2023.10.014
- A dataset of meteorology, PM<sub>2.5</sub> concentration and gaseous pollutants in Xi ′an City from 2019 to 2020 W. RAN et al. https://doi.org/10.11922/11-6035.csd.2023.0020.zh
- Unveiling Differences in Source Apportionment and Optical Properties of Wintertime Carbonaceous Aerosols in Northern and Southern Chinese Cities R. Li et al. https://doi.org/10.1007/s41810-025-00359-4
- 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 J. Tian et al. https://doi.org/10.5194/acp-22-8369-2022
- Strong influence of black carbon on aerosol optical properties in central Amazonia during the fire season R. Stern et al. https://doi.org/10.5194/acp-25-9451-2025
- Influence of particle growth and secondary aerosol formation on light scattering associated with PM2.5 variability in the North China plain A. Cai et al. https://doi.org/10.1016/j.atmosenv.2025.121650
- High-time-resolution chemical composition and source apportionment of PM2.5 in northern Chinese cities: implications for policy Y. Zhang et al. https://doi.org/10.5194/acp-23-9455-2023
- Light Absorption Properties of Brown Carbon Aerosol During Winter at a Polluted Rural Site in the North China Plain Y. Tao et al. https://doi.org/10.3390/atmos15111294
- Scattering Characteristics of Submicron Particulate Chemical Components During Winter in Northern and Southern Chinese Cities J. Shi et al. https://doi.org/10.3390/atmos16111302
- Chemical characteristics of wintertime PM2.5 in background region of northwest China during urban emission reduction Y. Liu et al. https://doi.org/10.1016/j.isci.2025.113528
- The impacts of regional transport on anthropogenic source contributions of PM2.5 in a basin city, China H. Liu et al. https://doi.org/10.1016/j.scitotenv.2024.170038
11 citations as recorded by crossref.
- Molecular compositions and sources of organic aerosols at a rural site on the Guanzhong Plain, Northwest China: The importance of biomass burning Y. Liu et al. https://doi.org/10.1016/j.partic.2023.10.014
- A dataset of meteorology, PM<sub>2.5</sub> concentration and gaseous pollutants in Xi ′an City from 2019 to 2020 W. RAN et al. https://doi.org/10.11922/11-6035.csd.2023.0020.zh
- Unveiling Differences in Source Apportionment and Optical Properties of Wintertime Carbonaceous Aerosols in Northern and Southern Chinese Cities R. Li et al. https://doi.org/10.1007/s41810-025-00359-4
- 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 J. Tian et al. https://doi.org/10.5194/acp-22-8369-2022
- Strong influence of black carbon on aerosol optical properties in central Amazonia during the fire season R. Stern et al. https://doi.org/10.5194/acp-25-9451-2025
- Influence of particle growth and secondary aerosol formation on light scattering associated with PM2.5 variability in the North China plain A. Cai et al. https://doi.org/10.1016/j.atmosenv.2025.121650
- High-time-resolution chemical composition and source apportionment of PM2.5 in northern Chinese cities: implications for policy Y. Zhang et al. https://doi.org/10.5194/acp-23-9455-2023
- Light Absorption Properties of Brown Carbon Aerosol During Winter at a Polluted Rural Site in the North China Plain Y. Tao et al. https://doi.org/10.3390/atmos15111294
- Scattering Characteristics of Submicron Particulate Chemical Components During Winter in Northern and Southern Chinese Cities J. Shi et al. https://doi.org/10.3390/atmos16111302
- Chemical characteristics of wintertime PM2.5 in background region of northwest China during urban emission reduction Y. Liu et al. https://doi.org/10.1016/j.isci.2025.113528
- The impacts of regional transport on anthropogenic source contributions of PM2.5 in a basin city, China H. Liu et al. https://doi.org/10.1016/j.scitotenv.2024.170038
Saved (final revised paper)
Latest update: 07 Jun 2026
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 (bext) decreased under emission control measures; however, bext 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.
We investigated aerosol optical properties and the direct radiative effect (DRE) at an urban...
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