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DOI	10.5194/acp-20-7049-2020
	Decreasing trends of particle number and black carbon mass concentrations at 16 observational sites in Germany from 2009 to 2018
	Sun J.; Birmili W.; Hermann M.; Tuch T.; Weinhold K.; Merkel M.; Rasch F.; Müller T.; Schladitz A.; Bastian S.; Löschau G.; Cyrys J.; Gu J.; Flentje H.; Briel B.; Asbach C.; Kaminski H.; Ries L.; Sohmer R.; Gerwig H.; Wirtz K.; Meinhardt F.; Schwerin A.; Bath O.; Ma N.; Wiedensohler A.
发表日期	2020
ISSN	1680-7316
起始页码	7049
结束页码	7068
卷号	20 期号:11
英文摘要	Anthropogenic emissions are dominant contributors to air pollution. Consequently, mitigation policies have been attempted since the 1990s in Europe to reduce pollution by anthropogenic emissions. To evaluate the effectiveness of these mitigation policies, the German Ultrafine Aerosol Network (GUAN) was established in 2008, focusing on black carbon (BC) and sub-micrometre aerosol particles. In this study, long-term trends of atmospheric particle number concentrations (PNCs) and equivalent BC (eBC) mass concentration over a 10-year period (2009-2018) were determined for 16 GUAN sites ranging from roadside to high Alpine environments. Overall, statistically significant decreasing trends are found for most of these parameters and environments in Germany. The annual relative slope of eBC mass concentration varies between-13.1% and-1.7% per year. The slopes of the PNCs vary from-17.2% to-1.7 %,-7.8% to-1.1 %, and-11.1% to-1.2% per year for 10-30, 30-200, and 200-800 nm size ranges, respectively. The reductions in various anthropogenic emissions are found to be the dominant factors responsible for the decreasing trends of eBC mass concentration and PNCs. The diurnal and seasonal variations in the trends clearly show the effects of the mitigation policies for road transport and residential emissions. The influences of other factors such as air masses, precipitation, and temperature were also examined and found to be less important or negligible. This study proves that a combination of emission mitigation policies can effectively improve the air quality on large spatial scales. It also suggests that a long-term aerosol measurement network at multi-type sites is an efficient and necessary tool for evaluating emission mitigation policies. © 2020 Author(s).
语种	英语
scopus关键词	aerosol; air quality; annual variation; anthropogenic source; atmospheric pollution; black carbon; concentration (composition); particulate matter; trend analysis; Germany
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/141276
作者单位	Leibniz Institute for Tropospheric Research (TROPOS), Leipzig, Germany; German Environment Agency (UBA), Dessau-Roßlau, Germany; Saxon State Office for Environment, Agriculture and Geology (LfULG), Dresden, Germany; Helmholtz Zentrum München (HMGU), Institute of Epidemiology II, Neuherberg, Germany; University of Augsburg (UA), Wissenschaftszentrum Umwelt, Augsburg, Germany; Deutscher Wetterdienst (DWD), Meteorologisches Observatorium Hohenpeißenberg, Germany; Institute of Energy and Environmental Technology (IUTA), Duisburg, Germany; Institute for Environmental and Climate Research, Jinan University, Guangzhou, Guangdong, 511443, China; SICK Engineering GmbH, Ottendorf-Okrilla, Germany; Fraunhofer Wilhelm-Klauditz-Institut (WKI), Braunschweig, Germany
推荐引用方式 GB/T 7714	Sun J.,Birmili W.,Hermann M.,et al. Decreasing trends of particle number and black carbon mass concentrations at 16 observational sites in Germany from 2009 to 2018[J],2020,20(11).
APA	Sun J..,Birmili W..,Hermann M..,Tuch T..,Weinhold K..,...&Wiedensohler A..(2020).Decreasing trends of particle number and black carbon mass concentrations at 16 observational sites in Germany from 2009 to 2018.Atmospheric Chemistry and Physics,20(11).
MLA	Sun J.,et al."Decreasing trends of particle number and black carbon mass concentrations at 16 observational sites in Germany from 2009 to 2018".Atmospheric Chemistry and Physics 20.11(2020).