气候变化领域集成服务门户(CCPortal): Is there a direct solar proton impact on lower-stratospheric ozone?

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DOI	10.5194/acp-20-14969-2020
	Is there a direct solar proton impact on lower-stratospheric ozone?
	Jia J.; Kero A.; Kalakoski N.; Szelag M.T.; Verronen P.E.
发表日期	2020
ISSN	1680-7316
起始页码	14969
结束页码	14982
卷号	20 期号:23
英文摘要	We investigate Arctic polar atmospheric ozone responses to solar proton events (SPEs) using MLS (Microwave Limb Sounder) satellite measurements (2004 now) and WACCM-D (Whole Atmosphere Community Climate Model) simulations (1989 2012). Special focus is on lowerstratospheric (10 30 km) ozone depletion that has been proposed earlier based on superposed epoch analysis (SEA) of ozonesonde anomalies (up to 10% ozone decrease at 20 km). SEA of the satellite dataset provides no solid evidence of any average SPE impact on the lower-stratospheric ozone, although at the mesospheric altitudes a statistically significant ozone depletion is present. In the individual case studies, we find only one potential case (January 2005) in which the lower-stratospheric ozone level was significantly decreased after the SPE onset (in both model simulation and MLS observation data). However, similar decreases could not be identified in other SPEs of similar or larger magnitude. Due to the input proton energy threshold of 300MeV, the WACCM-D model can only detect direct proton effects above 25 km, and simulation results before the Aura MLS era indicate no significant effect on the lower-stratospheric ozone. However, we find a very good overall consistency between WACCM-D simulations and MLS observations of SPE-driven ozone anomalies both on average and for the individual cases including January 2005. © 2020 Copernicus GmbH. All rights reserved.
英文关键词	atmospheric chemistry; ozone; ozone depletion; stratosphere
语种	英语
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/168914
作者单位	Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland; Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
推荐引用方式 GB/T 7714	Jia J.,Kero A.,Kalakoski N.,et al. Is there a direct solar proton impact on lower-stratospheric ozone?[J],2020,20(23).
APA	Jia J.,Kero A.,Kalakoski N.,Szelag M.T.,&Verronen P.E..(2020).Is there a direct solar proton impact on lower-stratospheric ozone?.Atmospheric Chemistry and Physics,20(23).
MLA	Jia J.,et al."Is there a direct solar proton impact on lower-stratospheric ozone?".Atmospheric Chemistry and Physics 20.23(2020).