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DOI	10.3389/fenvs.2014.00015
	Seasonal variability of aerosol concentration and size distribution in Cape Verde using a continuous aerosol optical spectrometer
	Pio, Casimiro A.; Cardoso, Joao G.; Cerqueira, Mario A.; Calvo, Ana; Nunes, Teresa, V; Alves, Celia A.; Custodio, Danilo; Almeida, Susana M.; Almeida-Silva, Marina
通讯作者	Pio, CA
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2014
卷号	2
英文摘要	One year of, almost continuous, measurements of aerosol optical properties and chemical composition were performed at the outskirts of Praia, Santiago Island, Cape Verde, within the framework of CV-DUST (Atmospheric aerosol in Cape Verde region: seasonal evaluation of composition, sources and transport) research project, during 2011. This article reports the aerosol number and mass concentration measurements using a GRIMM Optical Aerosol Spectrometer that provides number size discrimination into 31 size ranges from 0.25 to 32 mu m. Time series of 5 min average PM10 concentrations revealed peak values higher than 1000 mu g.m(-3) during winter dust storm events originating over Northern Africa. The 24 h average concentrations exceeded the World Health Organization (WHO) guidelines for PM2.5 and PM10 in 20 and 30% of the 2001 days, respectively. Annual average mass concentrations (+/- standard deviation) for PM1, PM2.5, and PM10 were 5 +/- 5, 19 +/- 21, and 48 +/- 64 mu g.m(-3), respectively. The annual PM2.5 and PM10 values were also above the limits prescribed by the WHO (10 and 20 mu g.m(-3), respectively). The aerosol mass size distribution revealed two main modes for particles smaller than 10 mu m: a fine mode (0.7-0.8 mu m), which possibly results of gas to particle conversion processes; and a coarse mode with maxima at 3-4 mu m, which is associated with desert dust and sea salt sources. Within the coarse mode two sub-modes with maxima at 5-6 and 10-12 mu m were frequently present.
英文关键词	Sahara dust Cape Verde PM levels size distribution seasonal variation
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000458069400015
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/2XILL650/330996
作者单位	[Pio, Casimiro A.; Cardoso, Joao G.; Cerqueira, Mario A.; Calvo, Ana; Nunes, Teresa, V; Alves, Celia A.; Custodio, Danilo] Univ Aveiro, CESAM, Aveiro, Portugal; [Pio, Casimiro A.; Cardoso, Joao G.; Cerqueira, Mario A.; Calvo, Ana; Nunes, Teresa, V; Alves, Celia A.; Custodio, Danilo] Univ Aveiro, Dept Environm & Planning, Campus Santiago, P-3810193 Aveiro, Portugal; [Cardoso, Joao G.] Univ Cape Verde, Dept Sci & Technol, Praia, Cape Verde; [Almeida, Susana M.; Almeida-Silva, Marina] Univ Lisbon, IST, Ctr Nucl Sci & Technol, Sacavem, Portugal
推荐引用方式 GB/T 7714	Pio, Casimiro A.,Cardoso, Joao G.,Cerqueira, Mario A.,et al. Seasonal variability of aerosol concentration and size distribution in Cape Verde using a continuous aerosol optical spectrometer[J],2014,2.
APA	Pio, Casimiro A..,Cardoso, Joao G..,Cerqueira, Mario A..,Calvo, Ana.,Nunes, Teresa, V.,...&Almeida-Silva, Marina.(2014).Seasonal variability of aerosol concentration and size distribution in Cape Verde using a continuous aerosol optical spectrometer.FRONTIERS IN ENVIRONMENTAL SCIENCE,2.
MLA	Pio, Casimiro A.,et al."Seasonal variability of aerosol concentration and size distribution in Cape Verde using a continuous aerosol optical spectrometer".FRONTIERS IN ENVIRONMENTAL SCIENCE 2(2014).