气候变化领域集成服务门户(CCPortal): Record-Low Arctic Stratospheric Ozone in 2020: MLS Observations of Chemical Processes and Comparisons With Previous Extreme Winters

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DOI	10.1029/2020GL089063
	Record-Low Arctic Stratospheric Ozone in 2020: MLS Observations of Chemical Processes and Comparisons With Previous Extreme Winters
	Manney G.L.; Livesey N.J.; Santee M.L.; Froidevaux L.; Lambert A.; Lawrence Z.D.; Millán L.F.; Neu J.L.; Read W.G.; Schwartz M.J.; Fuller R.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Aura Microwave Limb Sounder (MLS) measurements show that chemical processing was critical to the observed record-low Arctic stratospheric ozone in spring 2020. The 16-year MLS record indicates more polar denitrification and dehydration in 2019/2020 than in any Arctic winter except 2015/2016. Chlorine activation and ozone depletion began earlier than in any previously observed winter, with evidence of chemical ozone loss starting in November. Active chlorine then persisted as late into spring as it did in 2011. Empirical estimates suggest maximum chemical ozone losses near 2.8 ppmv by late March in both 2011 and 2020. However, peak chlorine activation, and thus peak ozone loss, occurred at lower altitudes in 2020 than in 2011, leading to the lowest Arctic ozone values ever observed at potential temperature levels from ∼400–480 K, with similar ozone values to those in 2011 at higher levels. ©2020. The Authors.
英文关键词	Atmospheric chemistry; Chemical activation; Chemical industry; Chlorine; Ozone layer; Active chlorine; Chemical process; Chemical processing; Chlorine activation; Empirical estimate; Microwave limb sounder; Potential temperature; Stratospheric ozone; Ozone; atmospheric chemistry; chlorine; denitrification; extreme event; microwave limb sounder; ozone; ozone depletion; potential temperature; seasonality; stratosphere; winter; Arctic
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169879
作者单位	NorthWest Research Associates, Socorro, NM, United States; New Mexico Institute of Mining and Technology, Socorro, NM, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Cooperative Institude for Research in Environmental Sciences/National Oceanic and Atmospheric Administration, Boulder, CO, United States
推荐引用方式 GB/T 7714	Manney G.L.,Livesey N.J.,Santee M.L.,et al. Record-Low Arctic Stratospheric Ozone in 2020: MLS Observations of Chemical Processes and Comparisons With Previous Extreme Winters[J],2020,47(16).
APA	Manney G.L..,Livesey N.J..,Santee M.L..,Froidevaux L..,Lambert A..,...&Fuller R.A..(2020).Record-Low Arctic Stratospheric Ozone in 2020: MLS Observations of Chemical Processes and Comparisons With Previous Extreme Winters.Geophysical Research Letters,47(16).
MLA	Manney G.L.,et al."Record-Low Arctic Stratospheric Ozone in 2020: MLS Observations of Chemical Processes and Comparisons With Previous Extreme Winters".Geophysical Research Letters 47.16(2020).