干旱区生态环境知识资源中心(Arid): Assessment of a new detection threshold for PM10 concentrations linked to African dust events in the Caribbean Basin

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DOI	10.1016/j.atmosenv.2020.117354
	Assessment of a new detection threshold for PM10 concentrations linked to African dust events in the Caribbean Basin
	Euphrasie-Clotilde, Lovely 1,2; Plocoste, Thomas 1,2; Feuillard, Tony 2; Velasco-Merino, Cristian 3; Mateos, David 3; Toledano, Carlos 3; Brute, France-Nor 2; Bassette, Celine 2; Gobinddass, Marieline 4
通讯作者	Plocoste, Thomas
来源期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
EISSN	1873-2844
出版年	2020
卷号	224
英文摘要	The Lesser Antilles is an intermediate zone located between the Caribbean Sea and the Atlantic Ocean. This area is frequently affected by the major long range Saharan dust transportation from West African desert sources. The aerosols optical properties are provided by the AEronet Robotic NETwork (AERONET) measurement sites in Puerto Rico, Guadeloupe, and Barbados. Thus, Aerosols Optical Depth (AOD), Angstrom Exponent (AE), Volume Particle Size Distribution (VPSD), complex refractive indexes, and Single Scattering Albedo (SSA) were used to define the predominant type of atmospheric particles namely sea salt aerosols, mineral dust or aerosols mixture. Obtained results show that aerosols in the atmospheric column (AOD) and surface dust measurements (PM 10) are well correlated with correlation coefficients of 0.72 and 0.81 respectively for Puerto Rico, and Guadeloupe. Detailed analysis of optical data associated to daily PM 10 concentrations highlighted that dust phenomenon can be observable below PM 10 threshold of 50 mu g/m(3) given by the European directives to detect dust episodes. Indeed, for Caribbean islands, episodes of desert dust phenomenon have been detected from 35 mu g/m(3). The climatological assessment of monthly dust events observed in Puerto Rico, Guadeloupe, and Martinique between 2006 and 2016 highlighted a low dust season from November to February and a high dust season from May to August. Both seasons are separated by two transition dust periods: March to April and September to October. Lastly, the day-to-day back trajectories (NOAA-HYSPLIT) illustrated the general atmospheric circulation and show three main dust transportation routes: the North West African Path (62.7%); the South West African Path (20.8%); and the North East Atlantic Path (15.1%). By computing the average PM 10 concentrations bring from each path, we notice that South West African Path is the most loaded in mineral dust because he comes from one of the most persistently active and intense dust sources in the world, i.e. Bodele Depression in northern Chad.
英文关键词	Desert dust PM10 threshold AOD Air mass back trajectories Air quality index Caribbean area
类型	Article
语种	英语
国家	France ; Spain
收录类别	SCI-E
WOS记录号	WOS:000525865300051
WOS关键词	LONG-RANGE TRANSPORT ; SAHARAN DUST ; MICROPHYSICAL PROPERTIES ; PARTICULATE MATTER ; OPTICAL-PROPERTIES ; AEROSOL TYPES ; MINERAL DUST ; DESERT DUST ; AERONET SUN ; ATLANTIC
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314151
作者单位	1.KaruSphere SASU, Dept Res Geosci, F-97139 Abymes, Guadeloupe Fwi, France; 2.Univ Antilles, LaRGE Lab Rech Geosci & Energies, EA 4935, F-97100 Pointe A Pitre, Guadeloupe, France; 3.Univ Valladolid, Dept Fis Teor Atom & Opt, Grp Opt Atmosfer, Valladolid, Spain; 4.Univ Guyane, UMR Espace Dev, F-97337 Cayenne, Guyane, France
推荐引用方式 GB/T 7714	Euphrasie-Clotilde, Lovely,Plocoste, Thomas,Feuillard, Tony,et al. Assessment of a new detection threshold for PM10 concentrations linked to African dust events in the Caribbean Basin[J]. French National Research Institute for Sustainable Development,2020,224.
APA	Euphrasie-Clotilde, Lovely.,Plocoste, Thomas.,Feuillard, Tony.,Velasco-Merino, Cristian.,Mateos, David.,...&Gobinddass, Marieline.(2020).Assessment of a new detection threshold for PM10 concentrations linked to African dust events in the Caribbean Basin.ATMOSPHERIC ENVIRONMENT,224.
MLA	Euphrasie-Clotilde, Lovely,et al."Assessment of a new detection threshold for PM10 concentrations linked to African dust events in the Caribbean Basin".ATMOSPHERIC ENVIRONMENT 224(2020).