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DOI	10.1016/j.scitotenv.2019.02.305
	Unusual winter Saharan dust intrusions at Northwest Spain: Air quality, radiative and health impacts
	Oduber, F.1; Calvo, A. I.1; Blanco-Alegre, C.1; Castro, A.1; Nunes, T.2; Alves, C.2; Sorribas, M.3; Fernandez-Gonzalez, D.4,5; Vega-Maray, A. M.4; Valencia-Barrera, R. M.4; Lucarelli, F.6,7; Nava, S.6,7; Calzolai, G.6,7; Alonso-Blanco, E.8; Fraile, B.9; Fialho, P.10; Coz, E.8; Prevot, A. S. H.11; Pont, V.12; Fraile, R.1
通讯作者	Fraile, R.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	669 页码:213-228
英文摘要	Saharan air masses can transport high amounts of mineral dust particles and biological material to the Iberian Peninsula. During winter, this kind of events is not very frequent and usually does not reach the northwest of the Peninsula. However, between 21 and 22 February 2016 and between 22 and 23 February 2017, two exceptional events were registered in Leon (Spain), which severely affected air quality. An integrative approach including: i) typical synoptic conditions; ii) aerosol chemical composition; iii) particle size distributions; iv) pollen concentration; v) aerosol optical depth (AOD); vi) radiative forcing and vii) estimation of the impact of aerosols in the respiratory tract, was carried out. In the global characterization of these events, the exceedance of the PM10 daily limit value, an increase in the coarse mode and a rise in the iron concentration were observed. On the 2016 event, an AOD and extinction-related Angstrom exponent clearly characteristic of desert aerosol (1.1 and 0.05, respectively) were registered. Furthermore, pollen grains not typical of flowering plants in this period were identified. The chemical analysis of the aerosol from the 2017 event allowed us to confirm the presence of the main elements associated with mineral sources (aluminum, calcium, and silica concentrations). An increase in the SO42-, NO3- and Cl- concentrations during the Saharan dust intrusion was also noted. However, in this event, there was no presence of atypical pollen types. The estimated dust radiative forcing traduced a cooling effect for surface and atmosphere during both events, corroborated by trends of radiative flux measurements. The estimated impact on the respiratory tract regions of the high levels of particulate matter during both Saharan dust intrusions showed high levels for the respirable fraction. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Aerosol optical properties Bioaerosol Particle size distribution Radiative forcing Respirable fraction Winter dust intrusion
类型	Article
语种	英语
国家	Spain ; Portugal ; Italy ; Switzerland ; France
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000463663500023
WOS关键词	LONG-RANGE TRANSPORT ; AEROSOL-SIZE DISTRIBUTION ; MARINE BOUNDARY-LAYER ; PARTICULATE MATTER ; AFRICAN DUST ; LIGHT-ABSORPTION ; DESERT DUST ; ATMOSPHERIC AEROSOLS ; CANARY-ISLANDS ; BROWN CARBON
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/2XILL650/218686
作者单位	1.Imarenab Univ Leon, Dept Phys, Leon, Spain; 2.Univ Aveiro, Dept Environm, Ctr Environm & Marine Studies, Aveiro, Portugal; 3.INTA, Atmospher Res & Instrumentat Branch, El Arenosillo Atmospher Sounding Stn, Huelva, Spain; 4.Univ Leon, Biodivers & Environm Management, Leon, Spain; 5.CNR, Inst Atmospher Sci & Climate, Bologna, Italy; 6.Univ Florence, Dept Phys & Astron, Florence, Italy; 7.INFN, Florence, Italy; 8.Ctr Energy Environm & Technol Res CIEMAT, Dept Environm, Madrid, Spain; 9.Univ Alcala De Henares, Dept Biomed & Biotechnol, Alcala De Henares, Spain; 10.IVAR, Res Inst Volcanol & Risk Assessment, Ponta Delgada, Portugal; 11.Paul Scherrer Inst, Lab Atmospher Chem, Villigen, Switzerland; 12.Univ Toulouse, Natl Ctr Sci Res CNRS, Lab Aerol, Toulouse, France
推荐引用方式 GB/T 7714	Oduber, F.,Calvo, A. I.,Blanco-Alegre, C.,et al. Unusual winter Saharan dust intrusions at Northwest Spain: Air quality, radiative and health impacts[J],2019,669:213-228.
APA	Oduber, F..,Calvo, A. I..,Blanco-Alegre, C..,Castro, A..,Nunes, T..,...&Fraile, R..(2019).Unusual winter Saharan dust intrusions at Northwest Spain: Air quality, radiative and health impacts.SCIENCE OF THE TOTAL ENVIRONMENT,669,213-228.
MLA	Oduber, F.,et al."Unusual winter Saharan dust intrusions at Northwest Spain: Air quality, radiative and health impacts".SCIENCE OF THE TOTAL ENVIRONMENT 669(2019):213-228.