Number size distributions and seasonality of submicron particles in Europe 2008–2009

dc.contributor.authorAsmi, Ari
dc.contributor.authorWiedensohler, Alfred
dc.contributor.authorLaj, Paolo
dc.contributor.authorFjaeraa, Ann Mari
dc.contributor.authorSellegri, Karine
dc.contributor.authorBirmili, Wolfram
dc.contributor.authorWeingartner, Ernest
dc.contributor.authorBaltensperger, Urs
dc.contributor.authorZdimal, Vladimir
dc.contributor.authorZikova, Nadezda
dc.contributor.authorPutaud, Jean-Philippe
dc.contributor.authorMarinoni, Angela
dc.contributor.authorTunved, Peter
dc.contributor.authorHansson, Hans-Christen
dc.contributor.authorFiebig, Markus
dc.contributor.authorKivekäs, Niku
dc.contributor.authorLihavainen, Heikki
dc.contributor.authorAsmi, Eija
dc.contributor.authorUlevicius, Vidmantas
dc.contributor.authorAalto, Pasi Pekka
dc.contributor.authorSwietlicki, Erik
dc.contributor.authorKristensson, Adam
dc.contributor.authorMihalopoulos, Nikolaos
dc.contributor.authorKalivitis, Nikos
dc.contributor.authorKalapov, Ivo
dc.contributor.authorKiss, Gyula
dc.contributor.authorde Leeuw, Gerrit
dc.contributor.authorHenzing, Bas
dc.contributor.authorHarrison, Roy
dc.contributor.authorBeddows, David
dc.contributor.authorO'Dowd, Colin
dc.contributor.authorJennings, Stephen G.
dc.contributor.authorFlentje, Harald
dc.contributor.authorWeinhold, Kay
dc.contributor.authorMeinhardt, Frank
dc.contributor.authorRies, Ludwig
dc.contributor.authorKulmala, Markku
dc.date.accessioned2024-08-13T12:24:03Z
dc.date.available2024-08-13T12:24:03Z
dc.date.issued2011-06-15
dc.description.abstractTwo years of harmonized aerosol number size distribution data from 24 European field monitoring sites have been analysed. The results give a comprehensive overview of the European near surface aerosol particle number concentrations and number size distributions between 30 and 500 nm of dry particle diameter. Spatial and temporal distribution of aerosols in the particle sizes most important for climate applications are presented. We also analyse the annual, weekly and diurnal cycles of the aerosol number concentrations, provide log-normal fitting parameters for median number size distributions, and give guidance notes for data users. Emphasis is placed on the usability of results within the aerosol modelling community. We also show that the aerosol number concentrations of Aitken and accumulation mode particles (with 100 nm dry diameter as a cut-off between modes) are related, although there is significant variation in the ratios of the modal number concentrations. Different aerosol and station types are distinguished from this data and this methodology has potential for further categorization of stations aerosol number size distribution types. The European submicron aerosol was divided into characteristic types: Central European aerosol, characterized by single mode median size distributions, unimodal number concentration histograms and low variability in CCN-sized aerosol number concentrations; Nordic aerosol with low number concentrations, although showing pronounced seasonal variation of especially Aitken mode particles; Mountain sites (altitude over 1000 m a.s.l.) with a strong seasonal cycle in aerosol number concentrations, high variability, and very low median number concentrations. Southern and Western European regions had fewer stations, which decreases the regional coverage of these results. Aerosol number concentrations over the Britain and Ireland had very high variance and there are indications of mixed air masses from several source regions; the Mediterranean aerosol exhibit high seasonality, and a strong accumulation mode in the summer. The greatest concentrations were observed at the Ispra station in Northern Italy with high accumulation mode number concentrations in the winter. The aerosol number concentrations at the Arctic station Zeppelin in Ny-Ålesund in Svalbard have also a strong seasonal cycle, with greater concentrations of accumulation mode particles in winter, and dominating summer Aitken mode indicating more recently formed particles. Observed particles did not show any statistically significant regional work-week or weekday related variation in number concentrations studied. Analysis products are made for open-access to the research community, available in a freely accessible internet site. The results give to the modelling community a reliable, easy-to-use and freely available comparison dataset of aerosol size distributions.
dc.identifier.doi10.5194/acp-11-5505-2011
dc.identifier.issn1680-7324
dc.identifier.issn1680-7316
dc.identifier.urihttps://irf.fhnw.ch/handle/11654/46595
dc.identifier.urihttps://doi.org/10.26041/fhnw-9659
dc.issue11
dc.language.isoen
dc.publisherCopernicus
dc.relation.ispartofAtmospheric Chemistry and Physics
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.spatialGöttingen
dc.subject.ddc550 - Geowissenschaften
dc.titleNumber size distributions and seasonality of submicron particles in Europe 2008–2009
dc.type01A - Beitrag in wissenschaftlicher Zeitschrift
dc.volume11
dspace.entity.typePublication
fhnw.InventedHereNo
fhnw.ReviewTypeAnonymous ex ante peer review of a complete publication
fhnw.affiliation.hochschuleHochschule für Technik und Umwelt FHNWde_CH
fhnw.affiliation.institutlnstitut für Sensorik und Elektronikde_CH
fhnw.openAccessCategoryGold
fhnw.pagination5505-2011
fhnw.publicationStatePublished
relation.isAuthorOfPublication05dd9a19-7a24-4325-805a-2d121483b168
relation.isAuthorOfPublication.latestForDiscovery05dd9a19-7a24-4325-805a-2d121483b168
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