气候变化领域集成服务门户(CCPortal): Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003

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DOI	10.5194/acp-21-17927-2021
	Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003
	Brattich E.; Liu H.; Zhang B.; Hernández-Ceballos M.Á.; Paatero J.; Sarvan D.; Djurdjevic V.; Tositti L.; Ajtić J.
发表日期	2021
ISSN	1680-7316
起始页码	17927
结束页码	17951
卷号	21 期号:23
英文摘要	Events of very high concentrations of 7Be cosmogenic radionuclide have been recorded at low-elevation surface stations in the subpolar regions of Europe during the cold season. With an aim to investigate the mechanisms responsible for those peak 7Be events, and in particular to verify if they are associated with the fast descent of stratospheric air masses occurring during sudden stratospheric warming (SSW) events, we analyze 7Be observations at six sampling sites in Fennoscandia during January-March 2003 when very high 7Be concentrations were observed and the Arctic vortex was relatively unstable as a consequence of several SSW events. We use the GEOS-Chem chemistry and transport model driven by the MERRA-2 meteorological reanalysis to simulate tropospheric 7Be over northern Europe. We show that the model reasonably reproduces the temporal evolution of surface 7Be concentrations observed at the six sampling sites. Our analysis of model simulations, surface 7Be observations, atmospheric soundings of ozone and temperature and surface ozone measurements indicates that the 7Be peak observed in late February 2003 (between 20 and 28 February 2003) at the six sampling sites in Fennoscandia was associated with downward transport of stratospheric vortex air that originated during an SSW that occurred a few days earlier (between 18 and 21 February 2003). © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License..All right reserved.
语种	英语
scopus关键词	air mass; atmospheric modeling; atmospheric pollution; beryllium isotope; concentration (composition); polar vortex; stratosphere; Arctic; Northern Europe
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/246383
作者单位	Department of Physics and Astronomy Augusto Righi DIFA, Alma Mater Studiorum University of Bologna, via Irnerio 46 (BO), Bologna, 40126, Italy; National Institute of Aerospace, 100 Exploration Way, Hampton, VA 23666, United States; Department of Physics, University of Cordoba, Rabanales Campus, Cordoba, 14071, Spain; Finnish Meteorological Institute, P.O. Box 503, Helsinki, 00101, Finland; Faculty of Veterinary Medicine, University of Belgrade, Bulevar osloboa'enja 18, Belgrade, 11000, Serbia; Institute of Meteorology, Faculty of Physics, University of Belgrade, Studentski trg 18, Belgrade, 11000, Serbia; Department of Chemistry G. Ciamician, Alma Mater Studiorum University of Bologna, via Selmi 2(BO), Bologna, 40126, Italy
推荐引用方式 GB/T 7714	Brattich E.,Liu H.,Zhang B.,et al. Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003[J],2021,21(23).
APA	Brattich E..,Liu H..,Zhang B..,Hernández-Ceballos M.Á..,Paatero J..,...&Ajtić J..(2021).Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(23).
MLA	Brattich E.,et al."Observation and modeling of high-7Be concentration events at the surface in northern Europe associated with the instability of the Arctic polar vortex in early 2003".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.23(2021).