气候变化领域集成服务门户(CCPortal): Air quality in megacity Delhi affected by countryside biomass burning

CCPortal

DOI	10.1038/s41893-019-0219-0
	Air quality in megacity Delhi affected by countryside biomass burning
	Bikkina S.; Andersson A.; Kirillova E.N.; Holmstrand H.; Tiwari S.; Srivastava A.K.; Bisht D.S.; Gustafsson Ö.
发表日期	2019
ISSN	2398-9629
起始页码	200
结束页码	205
卷号	2 期号:3
英文摘要	South Asian megacities are strong sources of regional air pollution. Delhi is a key hotspot of health- and climate-impacting black carbon (BC) emissions, affecting environmental sustainability in densely populated northern India. Effective mitigation of BC impact is hampered by highly uncertain emission source estimates. Here, we use dual-carbon isotope fingerprints (δ13C/∆14C) of BC to constrain the seasonal source variability in Delhi. These measurements show that lower BC concentrations in summer are predominantly from fossil fuel sources (~83%). However, large-scale open burning of post-harvest crop residue/wood in nearby rural regions is contributing to severe haze pollution in Delhi during winter and autumn (~42 ± 17%). Hence, the common conception that megacities affect their surroundings is here amended or seasonally reversed. Therefore, to combat the severe air pollution problems in Delhi and the environmental quality of northern India, current urban efforts need to be complemented with countryside regional mitigation. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Agricultural wastes; Air quality; Carbon; Fossil fuels; Asian mega-cities; Carbon isotopes; Emission sources; Environmental quality; Environmental sustainability; Fossil fuel sources; Pollution problems; Regional air pollution; Sustainable development
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163060
作者单位	Dept of Environmental Science and Analytical Chemistry, Bolin Centre for Climate Research, Stockholm University, Stockholm, Sweden; Indian Institute of Tropical Meteorology, Regional Centre, New Delhi, India
推荐引用方式 GB/T 7714	Bikkina S.,Andersson A.,Kirillova E.N.,et al. Air quality in megacity Delhi affected by countryside biomass burning[J],2019,2(3).
APA	Bikkina S..,Andersson A..,Kirillova E.N..,Holmstrand H..,Tiwari S..,...&Gustafsson Ö..(2019).Air quality in megacity Delhi affected by countryside biomass burning.Nature Sustainability,2(3).
MLA	Bikkina S.,et al."Air quality in megacity Delhi affected by countryside biomass burning".Nature Sustainability 2.3(2019).