干旱区生态环境知识资源中心(Arid): How a mesoscale cyclonic vortex over Sahara leads to a dust outbreak in South-western Iberia

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DOI	10.1016/j.atmosres.2020.105302
	How a mesoscale cyclonic vortex over Sahara leads to a dust outbreak in South-western Iberia
	Couto, Flavio Tiago; Chaves Cardoso, Eduardo Henrique; Costa, Maria Joao; Salgado, Rui; Guerrero-Rascado, Juan Luis; Salgueiro, Vanda
通讯作者	Couto, FT (corresponding author), Univ Evora, Inst Ciencias Terra ICT, Polo Evora, Rua Romao Ramalho 59, P-7000671 Evora, Portugal.
来源期刊	ATMOSPHERIC RESEARCH
ISSN	0169-8095
EISSN	1873-2895
出版年	2021
卷号	249
英文摘要	The study focused on an exceptional desert dust outbreak episode, in particular on the role of atmospheric circulation transporting high amounts of dust toward Portugal in February 2017. In order to assess the atmospheric conditions behind the mineral dust layer observed in Evora from lidar observations, two simulations were performed with the Meso-NH model including dust emission but with different initialization times. The simulations were performed over a single domain that covers 3000 x 3600 km and with a 10 km resolution. The episode was governed by a variety of complex interactions between surface and atmospheric dynamics during nine days. The study highlights the role played by the regional orography of the North Africa producing mesoscale circulations, namely the airflow convergence and the development of a cyclonic vortex in the lower troposphere. The intense winds near the surface was the main factor controlling the mobilization of mineral dust particles. In addition, a low pressure system approaching from mid-latitudes was fundamental for the longlasting event, as well as for the transport of desert dust toward Portugal.
英文关键词	Lidar observations Extraordinary desert dust outbreaks Modelling desert dust Meso-NH model
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000596388600003
WOS关键词	SINGLE CALCULUS CHAIN ; TRANSPORT ; EVENTS ; EXTINCTION ; SIMULATION ; INVERSION ; EMISSIONS ; EXTREME ; SYSTEM ; SUMMER
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347750
作者单位	[Couto, Flavio Tiago; Chaves Cardoso, Eduardo Henrique; Salgueiro, Vanda] Univ Evora, Inst Ciencias Terra ICT, Polo Evora, Rua Romao Ramalho 59, P-7000671 Evora, Portugal; [Costa, Maria Joao; Salgado, Rui] Univ Evora, Inst Ciencias Terra ICT, Polo Evora, Dept Fis,Escola Ciencias Tecnol, Rua Romao Ramalho 59, P-7000671 Evora, Portugal; [Guerrero-Rascado, Juan Luis] Univ Granada, Dept Fis Aplicada, Inst Invest Sistema Tierra Andalucia IISTA CEAMA, Granada, Spain
推荐引用方式 GB/T 7714	Couto, Flavio Tiago,Chaves Cardoso, Eduardo Henrique,Costa, Maria Joao,et al. How a mesoscale cyclonic vortex over Sahara leads to a dust outbreak in South-western Iberia[J],2021,249.
APA	Couto, Flavio Tiago,Chaves Cardoso, Eduardo Henrique,Costa, Maria Joao,Salgado, Rui,Guerrero-Rascado, Juan Luis,&Salgueiro, Vanda.(2021).How a mesoscale cyclonic vortex over Sahara leads to a dust outbreak in South-western Iberia.ATMOSPHERIC RESEARCH,249.
MLA	Couto, Flavio Tiago,et al."How a mesoscale cyclonic vortex over Sahara leads to a dust outbreak in South-western Iberia".ATMOSPHERIC RESEARCH 249(2021).