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Particulate carbon in precipitation at European background sites

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dc.contributor.authorCerqueira, Mário
dc.contributor.authorPio, Casimiro
dc.contributor.authorLegrand, Michel
dc.contributor.authorPuxbaum, Hans
dc.contributor.authorKasper-Giebl, Anne
dc.contributor.authorAfonso, Joana
dc.contributor.authorPreunkert, Susanne
dc.contributor.authorGelencsér, András
dc.contributor.authorFialho, Paulo
dc.date.accessioned2012-09-27T09:19:26Z
dc.date.available2012-09-27T09:19:26Z
dc.date.issued2010
dc.date.updated2012-09-25T09:52:42Z
dc.description.abstractThe particulate carbon content of precipitation was investigated in samples collected at five background sites located over a west-east European transect, from the Azores, in the mid-Atlantic Ocean, to the Hungarian plain, in central Europe. Sampling was performed on an event basis and the particulate carbon (elemental carbon, EC, and water insoluble organic carbon, WIOC) content was concentrated on quartz filters for the subsequent analysis by a thermal optical method in order to separate the EC and WIOC fractions. The average EC concentrations range from low values at the Azores (2.8±4.3 μg C L−1) and at the high mountain site of Sonnblick (5.2±3.7 μg C L−1) to high values at the more inland sites of Schauinsland (28±38 μg C L−1) and K-Puszta (24±24 μg C L−1). The average WIOC concentrations range from 98±56 μg C L−1 at the coastal site of Aveiro and 113±78 μg C L−1 at the Azores to 358±194 μg C L−1 at the continental site of K-Puszta. These results are discussed in terms of factors affecting the spatial distribution of particulate carbon, such as emissions from surrounding areas and prevalent meteorological conditions. EC is found to be a minor contributor to total particulate carbon present in rain and snow samples (from 2.5% to 15%). This is particularly true at the remotes sites, where the EC contribution to total particulate carbon is <6.5%, consistent with a negligible impact of anthropogenic combustions locally. The EC and WIOC scavenging ratios were estimated and compared with those of sulfate, also evaluated at the same sampling sites. The results indicated that EC is removed from the atmosphere by wet deposition less efficiently than WIOC, and in turn this species is removed less efficiently than sulfate.por
dc.description.sponsorshipThis work was supported by the European Commission under Grant number EVK2-CT-2001-00113 and by the Research Unit CESAM (Centre for Environmental and Marine Studies)por
dc.identifier.citationCerqueira, Mário; Pio, Casimiro; Legrand, Michel; Puxbaum, Hans; Kasper-Giebl, Anne; Afonso, Joana; Preunkert, Susanne; Gelencsér, András; Fialho, Paulo. Particulate carbon in precipitation at European background sites, Journal of Aerosol Science, 41, 1, 51-61, 2010.por
dc.identifier.issn0021-8502
dc.identifier.urihttp://hdl.handle.net/10400.3/1470
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relationEVK2-CT-2001-00113por
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0021850209001414por
dc.subjectPrecipitationpor
dc.subjectParticulate Matterpor
dc.subjectElemental Carbonpor
dc.subjectOrganic Depositionpor
dc.subjectScavenging Ratiospor
dc.subjectWet Depositionpor
dc.titleParticulate carbon in precipitation at European background sitespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage61por
oaire.citation.startPage51por
oaire.citation.titleJournal of Aerosol Sciencepor
oaire.citation.volume41por
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor

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