气候变化领域集成服务门户(CCPortal): Development and evolution of an anomalous Asian dust event across Europe in March 2020

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DOI	10.5194/acp-22-4047-2022
	Development and evolution of an anomalous Asian dust event across Europe in March 2020
	Tositti, Laura; Brattich, Erika; Cassardo, Claudio; Morozzi, Pietro; Bracci, Alessandro; Marinoni, Angela; Di Sabatino, Silvana; Porcu, Federico; Zappi, Alessandro
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	4047
结束页码	4073
卷号	22 期号:6 页码:27
英文摘要	This paper concerns an in-depth analysis of an exceptional incursion of mineral dust over southern Europe in late March 2020 (27-30 March 2020). This event was associated with an anomalous circulation pattern leading to several days of PM10 (particulate matter with an aerodynamic diameter less than 10 mu m) exceedances in connection with a dust source located in central Asia; this is a rare source of dust for Europe, which is more frequently affected by dust outbreaks from the Sahara Desert. The synoptic meteorological configuration was analyzed in detail, and the aerosol evolution during the transit of the dust plume over northern Italy was assessed at high time resolution by means of optical particle counting at three stations, namely Bologna, Trieste, and Mt. Cimone, allowing for the revelation of the transport timing among the three locations. Back-trajectory analyses supported by Copernicus Atmosphere Monitoring Service (CAMS) maps allowed for the location of the mineral dust source area in the Aralkum region. Therefore, the event was analyzed by observing the particle number size distribution with the support of chemical composition analysis. It is shown that the PM10 exceedance recorded is associated with a large fraction of coarse particles, which is in agreement with mineral dust properties. Both the in situ number size distribution and the vertical distribution of the dust plume were cross-checked using lidar ceilometer and aerosol optical depth (AOD) data from two nearby stations and showed that the dust plume (in contrast to those originating from the Sahara Desert) traveled close to the ground (up to a height of about 2 km). The limited mixing layer height caused by high concentrations of absorbing and scattering aerosols caused the mixing of mineral dust with other locally produced ambient aerosols, thereby potentially increasing its morbidity effects.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000776519300001
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/273501
作者单位	University of Bologna; University of Bologna; University of Turin; Consiglio Nazionale delle Ricerche (CNR); Istituto di Scienze dell'Atmosfera e del Clima (ISAC-CNR)
推荐引用方式 GB/T 7714	Tositti, Laura,Brattich, Erika,Cassardo, Claudio,et al. Development and evolution of an anomalous Asian dust event across Europe in March 2020[J],2022,22(6):27.
APA	Tositti, Laura.,Brattich, Erika.,Cassardo, Claudio.,Morozzi, Pietro.,Bracci, Alessandro.,...&Zappi, Alessandro.(2022).Development and evolution of an anomalous Asian dust event across Europe in March 2020.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(6),27.
MLA	Tositti, Laura,et al."Development and evolution of an anomalous Asian dust event across Europe in March 2020".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.6(2022):27.