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Ultrafine particle formation in the inland sea breeze airflow in Southwest Europe [Discussion paper]
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dc.contributor.authorFernández Camacho, Rocíoes_ES
dc.contributor.authorRodríguez González, Sergioes_ES
dc.contributor.authorRosa Díaz, Jesús Damián de laes_ES
dc.contributor.authorSánchez de la Campa, Ana Maríaes_ES
dc.contributor.authorViana, Mares_ES
dc.contributor.authorAlastuey, Andréses_ES
dc.contributor.authorQuerol, Xavieres_ES
dc.identifier.citationAtmospheric Chemistry and Physics Discussions [Preprint]. 2010, 10, p. 17753–17788es_ES
dc.description.abstractStudies on ultrafine particles (diameter < 100nm) and air quality have mostly focused on vehicle exhaust emissions and on new particle formation in "clean" ambient air. Here we present a study focused on the processes contributing to ultrafine particle concentrations in a city (Huelva, SW Spain) placed close to a coastal area where significant anthropogenic emissions of aerosol precursors occur. The overall data analysis shows that two processes predominantly contribute to the number of particles coarser than 2.5 nm: vehicle exhaust emissions and new particle formation due to photo-chemical activity. As typically occurs in urban areas, vehicle exhaust emissions result in high concentrations of black carbon (BC) and particles coarser than 2.5 nm (N) during the morning rush hours. The highest N concentrations were recorded during the 11:00–17:00 h period, under the sea breeze regime, when low BC concentrations were registered and photochemical activity resulted in high O3 levels and in new particle formation in the aerosol precursors' rich inland airflow. In this period, it is estimated that about 80% of the number of particles are linked to sulfur dioxide emissions. The contributions to N of "carbonaceous material and those compounds nucleating/condensing immediately after emission" and of the "new particle formation processes in air masses rich gaseous precursors (e.g. SO2)" were estimated by means of a relatively novel method based on simultaneous measurements of BC and N. A comparison with two recent studies suggests that the daily cycles of "new particle formation" during the inland sea breeze is blowing period seem to be a feature of ultrafine particles in coastal areas of South-west Europe.es_ES
dc.description.sponsorshipThis study has been carried out within the framework of several research projects: AER-REG (P07-RNM-03125; Regional Ministry of Innovation, Science and Enterprise of the Andalusian Autonomous Government), GRACCIE (CSD2007-00067; Ministry of Science and Innovation of Spain), SIMAND (P07-RNM-02729; Regional Ministry of Innovation, Science and Enterprise of the Andalusian Autonomous Government) and EPAU (B026/2007/3-10.1; Ministry of Environment of Spain).es_ES
dc.publisherEuropean Geosciences Uniones_ES
dc.rightsLicencia CC: Reconocimiento CC BYes_ES
dc.subjectUltrafine particleses_ES
dc.subjectHuman healthes_ES
dc.subjectUrban particleses_ES
dc.subjectCalidad del airees_ES
dc.titleUltrafine particle formation in the inland sea breeze airflow in Southwest Europe [Discussion paper]es_ES
Appears in Collections:Artículos científicos 2010-2014

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