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dc.contributor.authorCusack, Michaeles_ES
dc.contributor.authorPérez, Noemíes_ES
dc.contributor.authorPey, Jorgees_ES
dc.contributor.authorAlastuey, Andréses_ES
dc.contributor.authorQuerol, Xavieres_ES
dc.date.accessioned2015-09-25T11:51:43Z-
dc.date.available2015-09-25T11:51:43Z-
dc.date.issued2013-
dc.identifier.citationAtmospheric Chemistry and Physicses_ES
dc.identifier.urihttp://hdl.handle.net/10261/122683-
dc.description.abstractThe chemical composition and sources of ambient fine particulate matter (PM1) over a period of 2.5 years for a regional background site in the western Mediterranean are presented in this work. Furthermore, sub-micron particle number concentrations and the sources of these particles are also presented. The mean PM1 concentration for the measurement period was 8.9 μgm-3, with organic matter (OM) and sulphate comprising most of the mass (3.2 and 1.5 μgm-3 respectively). Six sources were identified in PM1 by Positive Matrix Factorisation (PMF): secondary organic aerosol, secondary nitrate, industrial, traffic + biomass burning, fuel oil combustion and secondary sulphate. Typically anthropogenic sources displayed elevated concentrations during the week with reductions at weekends. Nitrate levels were elevated in winter and negligible in summer, whereas secondary sulphate levels underwent a contrasting seasonal evolution with highest concentrations in summer, similar to the fuel oil combustion source. The SOA source was influenced by episodes of sustained pollution as a result of anticyclonic conditions occurring during winter, giving rise to thermal inversions and the accumulation of pollutants in the mixing layer. Increased levels in summer were owing to higher biogenic emissions and regional recirculation of air masses. The industrial source decreased in August due to decreased emissions during the vacation period. Increases in the traffic + biomass burning source were recorded in January, April and October, which were attributed to the occurrence of the aforementioned pollution episodes and local biomass burning emission sources, which include agriculture and domestic heating systems. Average particle number concentrations (N9-825 nm) from 5/11/2010 to 01/06/2011 and from 15/10/2011 to 18/12/2011 reached 3097 cm -3. Five emission sources of particle of sub-micron particles were determined by Principal Component Analysis (PCA); industrial + traffic + biomass burning, new particle formation + growth, secondary sulphate + fuel oil combustion, crustal material and secondary nitrate. The new particle formation + growth source dominated the particle number concentration (56% of total particle number concentration), especially for particles < 100 nm, followed by industrial + traffic + biomass burning (13%). Secondary sulphate + fuel oil combustion (8%), nitrate (9%) and crustal material (2%) were dominant for particles of larger diameter (> 100 nm) and thus did not influence the particle number concentration significantly.es_ES
dc.description.sponsorshipThis study was supported by the Ministry of Economy and Competitiveness and FEDER funds under the projects CARIATI (CGL2008-06294/CLI), VAMOS (CGL2010 19464/CLI) and GRACCIE (CSD 2007-00067). The research leading to these results has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) ACTRIS under grant agreement no. 262254 and the Generalitat de Catalunya (AGRUAR-2009SGR8).es_ES
dc.language.isoenges_ES
dc.publisherEuropean Geosciences Uniones_ES
dc.relationinfo:eu-repo/grantAgreement /EC/FP7/654109es_ES
dc.relation.isversionofPublisher's versiones_ES
dc.rightsopenAccesses_ES
dc.subjectMediterranean environmentes_ES
dc.subjecttraffic emissiones_ES
dc.subjectBiomass burninges_ES
dc.subjectAir masses_ES
dc.titleSource apportionment of fine PM and sub-micron particle number concentrations at a regional background site in the western Mediterranean: A 2.5 year studyes_ES
dc.typeartículoes_ES
dc.identifier.doi10.5194/acp-13-5173-2013-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionDOI: 10.5194/acp-13-5173-2013es_ES
dc.rights.licenseCC Attribution 3.0 License.es_ES
dc.contributor.funderEuropean Commissiones_ES
dc.relation.csices_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
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