气候变化领域集成服务门户(CCPortal): Towards understanding the characteristics of new particle formation in the Eastern Mediterranean

CCPortal

DOI	10.5194/acp-21-9223-2021
	Towards understanding the characteristics of new particle formation in the Eastern Mediterranean
	Baalbaki R.; Pikridas M.; Jokinen T.; Laurila T.; Dada L.; Bezantakos S.; Ahonen L.; Neitola K.; Maisser A.; Bimenyimana E.; Christodoulou A.; Unga F.; Savvides C.; Lehtipalo K.; Kangasluoma J.; Biskos G.; Petäjä T.; Kerminen V.-M.; Sciare J.; Kulmala M.
发表日期	2021
ISSN	1680-7316
起始页码	9223
结束页码	9251
卷号	21 期号:11
英文摘要	To quantify the contribution of new particle formation (NPF) to ultrafine particle number and cloud condensation nuclei (CCN) budgets, one has to understand the mechanisms that govern NPF in different environments and its temporal extent. Here, we study NPF in Cyprus, an Eastern Mediterranean country located at the crossroads of three continents and affected by diverse air masses originating from continental, maritime, and desert-dust source areas. We performed 1-year continuous measurements of aerosol particles down to ∼1 nm in diameter for the first time in the Eastern Mediterranean and Middle East (EMME) region. These measurements were complemented with trace gas data, meteorological variables, and retroplume analysis. We show that NPF is a very frequent phenomenon at this site and has higher frequencies of occurrence during spring and autumn. NPF events were both of local and regional origin, and the local events occurred frequently during the month with the lowest NPF frequency. Some NPF events exhibited multiple onsets, while others exhibited apparent particle shrinkage in size. Additionally, NPF events were observed during the nighttime and during episodes of high desert-dust loadings. Particle formation rates and growth rates were comparable to those in urban environments, although our site is a rural one. Meteorological variables and trace gases played a role in explaining the intra-monthly variability of NPF events, but they did not explain why summer months had the least NPF frequency. Similarly, pre-existing aerosol loading did not explain the observed seasonality. The months with the least NPF frequency were associated with higher H2SO4 concentrations but lower NO2 concentrations, which is an indicator of anthropogenic influence. Air masses arriving from the Middle East were not observed during these months, which could suggest that precursor vapors important for nucleation and growth are transported to our site from the Middle East. Further comprehensive measurements of precursor vapors are required to prove this hypothesis. © 2021 Rima Baalbaki et al.
语种	英语
scopus关键词	aerosol formation; air mass; cloud condensation nucleus; concentration (composition); dust; loading; particle size; trace gas; Cyprus; Mediterranean Sea; Mediterranean Sea (East); Indicator indicator
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/246801
作者单位	Institute for Atmospheric and Earth System Research (INAR)/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, Helsinki, 00014, Finland; Climate and Atmosphere Research Centre (CARE-C), Cyprus Institute, P.O. Box 27456, Nicosia, 1645, Cyprus; SAGE, Département Sciences de l'Atmosphère et Génie de l'Environnement, IMT Lille Douai, Université de Lille, Lille, 59000, France; Ministry of Labour Welfare and Social Insurance, Department of Labour Inspection (DLI), Nicosia, Cyprus; Atmospheric Composition Research Unit, Finnish Meteorological Institute, P.O. Box 503, Helsinki, 00101, Finland; EPFL, School of Architecture, Civil and Environmental Engineering, Sion, 1951, Switzerland; Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, 5232, Switzerland
推荐引用方式 GB/T 7714	Baalbaki R.,Pikridas M.,Jokinen T.,et al. Towards understanding the characteristics of new particle formation in the Eastern Mediterranean[J],2021,21(11).
APA	Baalbaki R..,Pikridas M..,Jokinen T..,Laurila T..,Dada L..,...&Kulmala M..(2021).Towards understanding the characteristics of new particle formation in the Eastern Mediterranean.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(11).
MLA	Baalbaki R.,et al."Towards understanding the characteristics of new particle formation in the Eastern Mediterranean".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.11(2021).