气候变化领域集成服务门户(CCPortal): Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016

CCPortal

DOI	10.5194/acp-19-10757-2019
	Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016
	Marsing A.; Jurkat-Witschas T.; Groo J.-U.; Kaufmann S.; Heller R.; Engel A.; Hoor P.; Krause J.; Voigt C.
发表日期	2019
ISSN	16807316
起始页码	10757
结束页码	10772
卷号	19 期号:16
英文摘要	Activated chlorine compounds in the polar winter stratosphere drive catalytic cycles that deplete ozone and methane, whose abundances are highly relevant to the evolution of global climate. The present work introduces a novel dataset of in situ measurements of relevant chlorine species in the lowermost Arctic stratosphere from the aircraft mission POLSTRACC-GW-LCYCLE-SALSA during winter 2015/2016. The major stages of chemical evolution of the lower polar vortex are presented in a consistent series of high-resolution mass spectrometric observations of HCl and ClONO2. Simultaneous measurements of CFC-12 are used to derive total inorganic chlorine (Cly) and active chlorine (ClOx). The new data highlight an altitude dependence of the pathway for chlorine deactivation in the lowermost vortex with HCl dominating below the 380 K isentropic surface and ClONO2 prevailing above. Further, we show that the Chemical Lagrangian Model of the Stratosphere (CLaMS) is generally able to reproduce the chemical evolution of the lower polar vortex chlorine budget, except for a bias in HCl concentrations. The model is used to relate local measurements to the vortex-wide evolution. The results are aimed at fostering our understanding of the climate impact of chlorine chemistry, providing new observational data to complement satellite data and assess model performance in the climate-sensitive upper troposphere and lower stratosphere region. © Author(s) 2019.
语种	英语
scopus关键词	chlorine; climate effect; partitioning; polar vortex; stratosphere; troposphere; vortex flow; winter; Arctic; Bivalvia
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/144194
作者单位	Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft-und Raumfahrt, Oberpfaffenhofen, Germany; Institut für Physik der Atmosphäre, Johannes-Gutenberg-Universität Mainz, Mainz, Germany; Institut für Energie-und Klimaforschung-Stratosphäre (IEK-7), Forschungszentrum Jülich, Jülich, Germany; Institut für Atmosphäre und Umwelt, Goethe Universität Frankfurt, Frankfurt, Germany
推荐引用方式 GB/T 7714	Marsing A.,Jurkat-Witschas T.,Groo J.-U.,et al. Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016[J],2019,19(16).
APA	Marsing A..,Jurkat-Witschas T..,Groo J.-U..,Kaufmann S..,Heller R..,...&Voigt C..(2019).Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016.Atmospheric Chemistry and Physics,19(16).
MLA	Marsing A.,et al."Chlorine partitioning in the lowermost Arctic vortex during the cold winter 2015/2016".Atmospheric Chemistry and Physics 19.16(2019).