Articles | Volume 24, issue 18
https://doi.org/10.5194/acp-24-10279-2024
© Author(s) 2024. 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-24-10279-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
18 Sep 2024
Research article |
| 18 Sep 2024
| 18 Sep 2024
Biomass-burning sources control ambient particulate matter, but traffic and industrial sources control volatile organic compound (VOC) emissions and secondary-pollutant formation during extreme pollution events in Delhi
Arpit Awasthi
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli PO, Punjab, 140306, India
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli PO, Punjab, 140306, India
Haseeb Hakkim
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli PO, Punjab, 140306, India
Sachin Mishra
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli PO, Punjab, 140306, India
Varkrishna Mummidivarapu
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli PO, Punjab, 140306, India
Gurmanjot Singh
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli PO, Punjab, 140306, India
Sachin D. Ghude
Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, Pashan, Pune, 411008, India
Vijay Kumar Soni
India Meteorological Department, Ministry of Earth Sciences, New Delhi, 110003, India
Narendra Nigam
India Meteorological Department, Ministry of Earth Sciences, New Delhi, 110003, India
Vinayak Sinha
Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, SAS Nagar, Manauli PO, Punjab, 140306, India
Madhavan N. Rajeevan
Ministry of Earth Sciences, Government of India, New Delhi, 110003, India
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Short summary
We use 111 volatile organic compounds (VOCs), PM10, and PM2.5 in a positive matrix factorization (PMF) model to resolve 11 pollution sources validated with chemical fingerprints. Crop residue burning and heating account for ~ 50 % of the PM, while traffic and industrial emissions dominate the gas-phase VOC burden and formation potential of secondary organic aerosols (> 60 %). Non-tailpipe emissions from compressed-natural-gas-fuelled commercial vehicles dominate the transport sector's PM burden.
We use 111 volatile organic compounds (VOCs), PM10, and PM2.5 in a positive matrix factorization...
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