气候变化领域集成服务门户(CCPortal): Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions

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DOI	10.1038/s41561-023-01138-x
	Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions
	Mishra, Suneeti; Tripathi, Sachchida Nand; Kanawade, Vijay P.; Haslett, Sophie L.; Dada, Lubna; Ciarelli, Giancarlo; Kumar, Varun; Singh, Atinderpal; Bhattu, Deepika; Rastogi, Neeraj; Daellenbach, Kaspar R.; Ganguly, Dilip; Gargava, Prashant; Slowik, Jay G.; Kulmala, Markku; Mohr, Claudia; El-Haddad, Imad; Prevot, Andre S. H.
发表日期	2023
ISSN	1752-0894
EISSN	1752-0908
起始页码	224
结束页码	+
卷号	16 期号:3 页码:21
英文摘要	Measurements suggest that emissions from biomass burning drive the rapid growth of particles from nanoscale into sizes relevant for haze formation during the night in Delhi. Natural and anthropogenic biomass burning are among the major sources of particulate pollution worldwide that affects air quality, climate and human health. Delhi, one of the world's most populated cities, experiences severe haze events caused by particulate pollution during winter, but the underlying pathways remain poorly understood. Here we observe intense and frequent nocturnal particle growth events during haze development in Delhi from measurements of aerosols and gases during January-February at the Indian Institute of Technology in Delhi. The particle growth events occur systematically despite the unfavourable condition for new-particle formation, including the lack of photochemical production of low-volatility vapours and considerable loss of vapours under extremely polluted conditions. We estimate that this process is responsible for 70% of the total particle-number concentration during haze. We identify that the condensation of primary organic vapours from biomass burning is the leading cause of the observed growth. The sharp decrease in night-time temperatures and rapid increase in biomass-burning emissions drive these primary organic vapours out of equilibrium, resulting in their condensation and the growth of nanoparticles into sizes relevant for haze formation. This high impact of primary biomass-burning emissions on night-time nanoparticle growth is unique compared with most urban locations globally, where low-volatility vapours formed through oxidation during the day drive particle growth and haze formation. As uncontrolled biomass burning for residential heating and cooking is rife in the Indo-Gangetic plain, we expect this growth mechanism to be a source of ultrafine particles, affecting the health of 5% of the world's population and impacting the regional climate. Our work implies that regulating uncontrolled biomass-combustion emissions may help inhibit nocturnal haze formation and improve human health in India.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000948751100009
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272452
作者单位	Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Kanpur; University of Hyderabad; Stockholm University; Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; University of Helsinki; Department of Space (DoS), Government of India; Physical Research Laboratory - India; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Delhi; Central Pollution Control Board Delhi; Institut National de l'Environnement Industriel et des Risques (INERIS); University of Delhi; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Jodhpur
推荐引用方式 GB/T 7714	Mishra, Suneeti,Tripathi, Sachchida Nand,Kanawade, Vijay P.,et al. Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions[J],2023,16(3):21.
APA	Mishra, Suneeti.,Tripathi, Sachchida Nand.,Kanawade, Vijay P..,Haslett, Sophie L..,Dada, Lubna.,...&Prevot, Andre S. H..(2023).Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions.NATURE GEOSCIENCE,16(3),21.
MLA	Mishra, Suneeti,et al."Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions".NATURE GEOSCIENCE 16.3(2023):21.