干旱区生态环境知识资源中心(Arid): Saharan dust intrusions in the Iberian Peninsula: Predominant synoptic conditions

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DOI	10.1016/j.scitotenv.2020.137041
	Saharan dust intrusions in the Iberian Peninsula: Predominant synoptic conditions
	Russo, A.1; Sousa, P. M.1; Durao, R. M.2,3; Ramos, A. M.1; Salvador, P.4; Linares, C.5; Diaz, J.5; Trigo, R. M.1,6
通讯作者	Russo, A.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	717
英文摘要	The Iberian Peninsula (IP) is recurrently affected by dust transport from the Sahara Desert and from the semi-arid Sahel regions. African dust is one of the most important sources of particulate matter in the southern Mediterranean. Therefore, it is vital to understand the underlying processes that lead to episodes of air pollution associated to the occurrence of dust intrusions. This work proposes to make an extended characterization of the preferential circulation weather patterns associated to the onset of dust events affecting the IP between 2006 and 2016. Saharan dust intrusions were analysed and an automatic objective classification procedure was used to classify circulation weather patterns associated to dust events. The spatial distribution of intrusion episodes is not homogeneous throughout the IP, occurring less frequently at northern and northwestern locations than at central and southern sites. Moreover, days with Saharan dust intrusions were more frequent in summer months, and more probable to occur under regimes with a southerly component. Finally, two extreme events with high concentration of particulate matter were analysed relatively to their life-cycle and particle trajectories. The distinct extreme episodes can be associated to different synoptic situations. However, and despite different large-scale configurations, a south or south-easterly component over the region is responsible for the establishment of a dust transport from the Saharan region towards Iberia, and thus leading to the intrusion onset. These results were supported by the calculation of back-trajectories which allowed to source apportioning the particles' origin, through a clear trajectory of air parcels originating from northern Africa in both events. The proposed framework can be useful to the prediction of dust and air pollution events based on the forecast of circulation weather patterns, as the results show that these events across the IP are mainly induced by specific patterns. (c) 2020 Elsevier B.V. All rights reserved.
英文关键词	Particulate matter (PM) Circulation weather types (CWT) Seasonal analysis Pollution events Circulation-to-environmental approach
类型	Article
语种	英语
国家	Portugal ; Spain ; Brazil
收录类别	SCI-E
WOS记录号	WOS:000519994800114
WOS关键词	CIRCULATION WEATHER TYPES ; AFRICAN DUST ; AIR-QUALITY ; PARTICULATE MATTER ; MEDITERRANEAN BASIN ; NORTH-AFRICA ; OUTBREAKS ; PM10 ; TRANSPORT ; PATTERNS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319117
作者单位	1.Univ Lisbon, Fac Ciencias, Inst Dom Luiz, Edificio C8,Piso 3, P-1749016 Lisbon, Portugal; 2.IPMA, Lisbon, Portugal; 3.Univ Lisbon, Inst Super Tecn, Dept Engn Civil Arquitectura & Georrecursos, Ctr Recursos Nat & Ambiente, Lisbon, Portugal; 4.Res Ctr Energy Environm & Technol CIEMAT, Dept Environm, Madrid, Spain; 5.Carlos III Natl Inst Hlth, Natl Sch Publ Hlth, Dept Epidemiol & Biostat, Madrid, Spain; 6.Univ Fed Rio de Janeiro, Dept Meteorol, BR-21941916 Rio De Janeiro, Brazil
推荐引用方式 GB/T 7714	Russo, A.,Sousa, P. M.,Durao, R. M.,et al. Saharan dust intrusions in the Iberian Peninsula: Predominant synoptic conditions[J],2020,717.
APA	Russo, A..,Sousa, P. M..,Durao, R. M..,Ramos, A. M..,Salvador, P..,...&Trigo, R. M..(2020).Saharan dust intrusions in the Iberian Peninsula: Predominant synoptic conditions.SCIENCE OF THE TOTAL ENVIRONMENT,717.
MLA	Russo, A.,et al."Saharan dust intrusions in the Iberian Peninsula: Predominant synoptic conditions".SCIENCE OF THE TOTAL ENVIRONMENT 717(2020).