气候变化领域集成服务门户(CCPortal): Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century

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DOI	10.5194/acp-21-11041-2021
	Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century
	Maliniemi V.; Nesse Tyssøy H.; Smith-Johnsen C.; Arsenovic P.; Marsh D.R.
发表日期	2021
ISSN	1680-7316
起始页码	11041
结束页码	11052
卷号	21 期号:14
英文摘要	Ozone is expected to fully recover from the chlorofluorocarbon (CFC) era by the end of the 21st century. Furthermore, because of anthropogenic climate change, a cooler stratosphere decelerates ozone loss reactions and is projected to lead to a super recovery of ozone. We investigate the ozone distribution over the 21st century with four different future scenarios using simulations of the Whole Atmosphere Community Climate Model (WACCM). At the end of the 21st century, the equatorial upper stratosphere has roughly 0.5 to 1.0gppm more ozone in the scenario with the highest greenhouse gas emissions compared to the conservative scenario. Polar ozone levels exceed those in the pre-CFC era in scenarios that have the highest greenhouse gas emissions. This is true in the Arctic stratosphere and the Antarctic lower stratosphere. The Antarctic upper stratosphere is an exception, where different scenarios all have similar levels of ozone during winter, which do not exceed pre-CFC levels. Our results show that this is due to excess nitrogen oxides (NOx) descending faster from above in the stronger scenarios of greenhouse gas emissions. NOx in the polar thermosphere and upper mesosphere is mainly produced by energetic electron precipitation (EEP) and partly by solar UV via transport from low latitudes. Our results indicate that the thermospheric/upper mesospheric NOx will be important factor for the future Antarctic ozone evolution and could potentially prevent a super recovery of ozone in the upper stratosphere. © 2021 Ville Maliniemi et al.
语种	英语
scopus关键词	anthropogenic effect; atmospheric chemistry; CFC; climate change; climate modeling; climate prediction; downwelling; future prospect; greenhouse gas; mesosphere; nitrogen oxides; ozone; reaction kinetics; stratosphere; thermosphere; twenty first century; weather forecasting
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/246714
作者单位	Birkeland Centre for Space Science, Department of Physics and Technology, University of Bergen, Bergen, Norway; EMPA Swiss Federal Laboratories for Material Science and Technology, Zürich, Switzerland; National Center for Atmospheric Research, Boulder, CO, United States; Faculty of Engineering and Physical Sciences, University of Leeds, Leeds, United Kingdom
推荐引用方式 GB/T 7714	Maliniemi V.,Nesse Tyssøy H.,Smith-Johnsen C.,et al. Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century[J],2021,21(14).
APA	Maliniemi V.,Nesse Tyssøy H.,Smith-Johnsen C.,Arsenovic P.,&Marsh D.R..(2021).Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(14).
MLA	Maliniemi V.,et al."Effects of enhanced downwelling of NOx on Antarctic upper-stratospheric ozone in the 21st century".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.14(2021).