气候变化领域集成服务门户(CCPortal): Observed changes in stratospheric circulation: decreasing lifetime of N2O, 2005-2021

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DOI	10.5194/acp-23-843-2023
	Observed changes in stratospheric circulation: decreasing lifetime of N2O, 2005-2021
	Prather, Michael J. J.; Froidevaux, Lucien; Livesey, Nathaniel J. J.
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	843
结束页码	849
卷号	23 期号:2 页码:7
英文摘要	Using Aura Microwave Limb Sounder satellite observations of stratospheric nitrous oxide (N2O), ozone, and temperature from 2005 through 2021, we calculate the atmospheric lifetime of N2O to be decreasing at a rate of -2.1 +/- 1.2 %/decade. This decrease is occurring because the N2O abundances in the middle tropical stratosphere, where N2O is photochemically destroyed, are increasing at a faster rate than the bulk N2O in the lower atmosphere. The cause appears to be a more vigorous stratospheric circulation, which models predict to be a result of climate change. If the observed trends in lifetime and implied emissions continue, then the change in N2O over the 21st century will be 27 % less than those projected with a fixed lifetime, and the impact on global warming and ozone depletion will be proportionately lessened. Because global warming is caused in part by N2O, this finding is an example of a negative climate-chemistry feedback.
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:000917153300001
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/273604
作者单位	University of California System; University of California Irvine; California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL)
推荐引用方式 GB/T 7714	Prather, Michael J. J.,Froidevaux, Lucien,Livesey, Nathaniel J. J.. Observed changes in stratospheric circulation: decreasing lifetime of N2O, 2005-2021[J],2023,23(2):7.
APA	Prather, Michael J. J.,Froidevaux, Lucien,&Livesey, Nathaniel J. J..(2023).Observed changes in stratospheric circulation: decreasing lifetime of N2O, 2005-2021.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(2),7.
MLA	Prather, Michael J. J.,et al."Observed changes in stratospheric circulation: decreasing lifetime of N2O, 2005-2021".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.2(2023):7.