气候变化领域集成服务门户(CCPortal): Aviation contrail climate effects in the North Atlantic from 2016 to 2021

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DOI	10.5194/acp-22-10919-2022
	Aviation contrail climate effects in the North Atlantic from 2016 to 2021
	Teoh, Roger; Schumann, Ulrich; Gryspeerdt, Edward; Shapiro, Marc; Molloy, Jarlath; Koudis, George; Voigt, Christiane; Stettler, Marc E. J.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	10919
结束页码	10935
卷号	22 期号:16 页码:17
英文摘要	Around 5 % of anthropogenic radiative forcing (RF) is attributed to aviation CO2 and non-CO2 impacts. This paper quantifies aviation emissions and contrail climate forcing in the North Atlantic, one of the world's busiest air traffic corridors, over 5 years. Between 2016 and 2019, growth in CO2 (+3.13 % yr(-1)) and nitrogen oxide emissions (+4.5 % yr(-1)) outpaced increases in flight distance (+3.05 % yr(-1)). Over the same period, the annual mean contrail cirrus net RF (204-280 mW m(-2)) showed significant inter-annual variability caused by variations in meteorology. Responses to COVID-19 caused significant reductions in flight distance travelled (-66 %), CO(2 )emissions (-71 %) and the contrail net RF (-66%) compared with the prior 1-year period. Around 12 % of all flights in this region cause 80 % of the annual contrail energy forcing, and the factors associated with strongly warming/cooling contrails include seasonal changes in meteorology and radiation, time of day, background cloud fields, and engine-specific non-volatile particulate matter (nvPM) emissions. Strongly warming contrails in this region are generally formed in wintertime, close to the tropopause, between 15:00 and 04:00 UTC, and above low-level clouds. The most strongly cooling contrails occur in the spring, in the upper troposphere, between 06:00 and 15:00 UTC, and without lower-level clouds. Uncertainty in the contrail cirrus net RF (216-238 mW m(-2)) arising from meteorology in 2019 is smaller than the inter-annual variability. The contrail RF estimates are most sensitive to the humidity fields, followed by nvPM emissions and aircraft mass assumptions. This longitudinal evaluation of aviation contrail impacts contributes a quantified understanding of inter-annual variability and informs strategies for contrail mitigation.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000846862200001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273677
作者单位	Imperial College London; University of London; University College London; Helmholtz Association; German Aerospace Centre (DLR); Imperial College London; Johannes Gutenberg University of Mainz
推荐引用方式 GB/T 7714	Teoh, Roger,Schumann, Ulrich,Gryspeerdt, Edward,et al. Aviation contrail climate effects in the North Atlantic from 2016 to 2021[J],2022,22(16):17.
APA	Teoh, Roger.,Schumann, Ulrich.,Gryspeerdt, Edward.,Shapiro, Marc.,Molloy, Jarlath.,...&Stettler, Marc E. J..(2022).Aviation contrail climate effects in the North Atlantic from 2016 to 2021.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(16),17.
MLA	Teoh, Roger,et al."Aviation contrail climate effects in the North Atlantic from 2016 to 2021".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.16(2022):17.