Articles | Volume 25, issue 1
https://doi.org/10.5194/acp-25-73-2025
© Author(s) 2025. 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-25-73-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Jan 2025
Research article |
| 07 Jan 2025
| 07 Jan 2025
Significant role of biomass burning in heavy haze formation in Nanjing, a megacity in China: molecular-level insights from intensive PM2.5 sampling on winter hazy days
Mingjie Kang
School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Mengying Bao
School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Huzhou Meteorological Administration, Huzhou, 313000, China
Wenhuai Song
School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Aduburexiati Abulimiti
School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Changliu Wu
School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Fang Cao
School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Sönke Szidat
Department of Chemistry, Biochemistry and Pharmaceutical Sciences and Oeschger Centre for Climate Change Research, University of Bern, Bern, 3012, Switzerland
Yanlin Zhang
CORRESPONDING AUTHOR
School of Ecology and Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
Atmospheric Environment Center, Joint Laboratory for International Cooperation on Climate and Environmental Change, Ministry of Education, Nanjing University of Information Science & Technology, Nanjing, 210044, China
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Short summary
Reports on molecular-level knowledge of high-temporal-resolution particulate matter ≤2.5 µm in diameter (PM2.5) on hazy days are limited. We investigated various PM2.5 species and their sources. The results show biomass burning (BB) was the main source of organic carbon. Moreover, BB enhanced fungal spore emissions and secondary aerosol formation. The contribution of non-fossil sources increased with increasing haze pollution, suggesting BB may be an important driver of haze events in winter.
Reports on molecular-level knowledge of high-temporal-resolution particulate matter ≤2.5 µm in...
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