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,Baerbel Sinha,Haseeb Hakkim,Sachin Mishra,Varkrishna Mummidivarapu,Gurmanjot Singh,Sachin D. Ghude,Vijay Kumar Soni,Narendra Nigam,Vinayak Sinha,and Madhavan N. Rajeevan
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
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
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
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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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...
