气候变化领域集成服务门户(CCPortal): Influence of the North Atlantic oscillation on the atmospheric levels of benzo[a]pyrene over Europe

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DOI	10.1007/s00382-021-05766-0
	Influence of the North Atlantic oscillation on the atmospheric levels of benzo[a]pyrene over Europe
	Jiménez-Guerrero P.; Ratola N.
发表日期	2021
ISSN	0930-7575
起始页码	825
结束页码	841
英文摘要	The atmospheric concentration of persistent organic pollutants (and of polycyclic aromatic hydrocarbons, PAHs, in particular) is closely related to climate change and climatic fluctuations, which are likely to influence contaminant’s transport pathways and transfer processes. Predicting how climate variability alters PAHs concentrations in the atmosphere still poses an exceptional challenge. In this sense, the main objective of this contribution is to assess the relationship between the North Atlantic Oscillation (NAO) index and the mean concentration of benzo[a]pyrene (BaP, the most studied PAH congener) in a domain covering Europe, with an emphasis on the effect of regional-scale processes. A numerical simulation for a present climate period of 30 years was performed using a regional chemistry transport model with a 25 km spatial resolution (horizontal), higher than those commonly applied. The results show an important seasonal behaviour, with a remarkable spatial pattern of difference between the north and the south of the domain. In winter, higher BaP ground levels are found during the NAO+ phase for the Mediterranean basin, while the spatial pattern of this feature (higher BaP levels during NAO+ phases) moves northwards in summer. These results show deviations up to and sometimes over 100% in the BaP mean concentrations, but statistically significant signals (p<0.1) of lower changes (20–40% variations in the signal) are found for the north of the domain in winter and for the south in summer. © 2021, The Author(s).
英文关键词	Benzo[a]pyrene; Chemical transport; Chemistry/climate modelling; North Atlantic oscillation
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183486
作者单位	Physics of the Earth, Department of Physics, Regional Campus of International Excellence (CEIR) “Campus Mare Nostrum”, University of Murcia, Murcia, 30100, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca), Murcia, 30120, Spain; LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, Porto, 4200-465, Portugal
推荐引用方式 GB/T 7714	Jiménez-Guerrero P.,Ratola N.. Influence of the North Atlantic oscillation on the atmospheric levels of benzo[a]pyrene over Europe[J],2021.
APA	Jiménez-Guerrero P.,&Ratola N..(2021).Influence of the North Atlantic oscillation on the atmospheric levels of benzo[a]pyrene over Europe.Climate Dynamics.
MLA	Jiménez-Guerrero P.,et al."Influence of the North Atlantic oscillation on the atmospheric levels of benzo[a]pyrene over Europe".Climate Dynamics (2021).