Arid
DOI10.5194/acp-11-6663-2011
Transport of desert dust mixed with North African industrial pollutants in the subtropical Saharan Air Layer
Rodriguez, S.1; Alastuey, A.2; Alonso-Perez, S.1; Querol, X.2; Cuevas, E.1; Abreu-Afonso, J.1; Viana, M.2; Perez, N.2; Pandolfi, M.2; de la Rosa, J.3
通讯作者Rodriguez, S.
来源期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2011
卷号11期号:13页码:6663-6685
英文摘要

An analysis of chemical composition data of particulate matter samples (TSP, PM10 and PM2.5) collected from 2002 to 2008 in the North Atlantic free troposphere at the Izana Global Atmospheric Watch (GAW) observatory (Tenerife, Canary Islands) shows that desert dust is very frequently mixed with particulate pollutants in the Saharan Air Layer (SAL). The study of this data set with Median Concentrations At Receptor (MCAR) plots allowed the identification of the potential source regions of the dust and particulate pollutants. Areas located at the south of the southern slope of the Atlas mountains emerge as the most frequent source of the soil desert dust advected to the northern edge of the SAL in summer. Industrial emissions occurring in Northern Algeria, Eastern Algeria, Tunisia and the Atlantic coast of Morocco appear as the most important source of the nitrate, ammonium and a fraction of sulphate (at least 60% of the sulphate <10 mu m transported from some regions) observed in the SAL. These emissions are mostly linked to crude oil refineries, phosphate-based fertilizer industry and power plants. Although desert dust emissions appear as the most frequent source of the phosphorous observed in the SAL, high P concentrations are observed when the SAL is affected by emissions from open mines of phosphate and phosphate based fertilizer industry. The results also show that a significant fraction of the sulphate (up to 90% of sulphate <10 mu m transported from some regions) observed in the SAL may be influenced by soil emissions of evaporite minerals in well defined regions where dry saline lakes (chotts) are present. These interpretations of the MCAR plots are consistent with the results obtained with the Positive Matrix Factorization PMF2) receptor modelling. The results of this study show that North African industrial pollutants may be mixed with desert dust and exported to the North Atlantic in the Saharan Air Layer.


类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000292728400032
WOS关键词MARINE BOUNDARY-LAYER ; POSITIVE MATRIX FACTORIZATION ; ATMOSPHERIC MINERAL DUST ; FACTOR-ANALYTIC MODELS ; LONG-RANGE TRANSPORT ; SIZE DISTRIBUTION ; FREE TROPOSPHERE ; ATLANTIC-OCEAN ; SAMUM 2006 ; CHEMICAL-COMPOSITION
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/167220
作者单位1.AEMET Joint Res Unit CSIC Studies Atmospher Pollu, Izana Atmospher Res Ctr, Santa Cruz De Tenerife 38071, Canary Islands, Spain;
2.CSIC, Inst Environm Assessment & Water Res IDAEA, ES-08034 Barcelona, Spain;
3.Univ Huelva, Joint Res Unit CSIC Air Pollut, Huelva 21071, Spain
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Rodriguez, S.,Alastuey, A.,Alonso-Perez, S.,et al. Transport of desert dust mixed with North African industrial pollutants in the subtropical Saharan Air Layer[J],2011,11(13):6663-6685.
APA Rodriguez, S..,Alastuey, A..,Alonso-Perez, S..,Querol, X..,Cuevas, E..,...&de la Rosa, J..(2011).Transport of desert dust mixed with North African industrial pollutants in the subtropical Saharan Air Layer.ATMOSPHERIC CHEMISTRY AND PHYSICS,11(13),6663-6685.
MLA Rodriguez, S.,et al."Transport of desert dust mixed with North African industrial pollutants in the subtropical Saharan Air Layer".ATMOSPHERIC CHEMISTRY AND PHYSICS 11.13(2011):6663-6685.
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