气候变化领域集成服务门户(CCPortal): Greater fuel efficiency is potentially preferable to reducing NOx emissions for aviation’s climate impacts

CCPortal

DOI	10.1038/s41467-020-20771-3
	Greater fuel efficiency is potentially preferable to reducing NOx emissions for aviation’s climate impacts
	Skowron A.; Lee D.S.; De León R.R.; Lim L.L.; Owen B.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Aviation emissions of nitrogen oxides (NOx) alter the composition of the atmosphere, perturbing the greenhouse gases ozone and methane, resulting in positive and negative radiative forcing effects, respectively. In 1981, the International Civil Aviation Organization adopted a first certification standard for the regulation of aircraft engine NOx emissions with subsequent increases in stringency in 1992, 1998, 2004 and 2010 to offset the growth of the environmental impact of air transport, the main motivation being to improve local air quality with the assumed co-benefit of reducing NOx emissions at altitude and therefore their climate impacts. Increased stringency is an ongoing topic of discussion and more stringent standards are usually associated with their beneficial environmental impact. Here we show that this is not necessarily the right direction with respect to reducing the climate impacts of aviation (as opposed to local air quality impacts) because of the tradeoff effects between reducing NOx emissions and increased fuel usage, along with a revised understanding of the radiative forcing effects of methane. Moreover, the predicted lower surface air pollution levels in the future will be beneficial for reducing the climate impact of aviation NOx emissions. Thus, further efforts leading to greater fuel efficiency, and therefore lower CO2 emissions, may be preferable to reducing NOx emissions in terms of aviation’s climate impacts. © 2021, The Author(s).
语种	英语
scopus关键词	carbon dioxide; fuel; methane; nitrogen oxide; ozone; climate effect; emission; emission control; environmental impact; greenhouse gas; nitric oxide; nitrogen oxides; spatiotemporal analysis; air pollution; air quality; air transportation; aircraft; altitude; Article; aviation; carbon footprint; climate; environmental impact; exhaust gas; greenhouse gas; radiative forcing; troposphere
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250778
作者单位	Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
推荐引用方式 GB/T 7714	Skowron A.,Lee D.S.,De León R.R.,等. Greater fuel efficiency is potentially preferable to reducing NOx emissions for aviation’s climate impacts[J],2021,12(1).
APA	Skowron A.,Lee D.S.,De León R.R.,Lim L.L.,&Owen B..(2021).Greater fuel efficiency is potentially preferable to reducing NOx emissions for aviation’s climate impacts.Nature Communications,12(1).
MLA	Skowron A.,et al."Greater fuel efficiency is potentially preferable to reducing NOx emissions for aviation’s climate impacts".Nature Communications 12.1(2021).