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dc.contributor.authorAnttila, T.
dc.contributor.authorKerminen, V.-M.
dc.contributor.authorKulmala, M.
dc.contributor.authorLaaksonen, A.
dc.contributor.authorO'Dowd, C. D.
dc.date.accessioned2018-08-24T08:24:02Z
dc.date.available2018-08-24T08:24:02Z
dc.date.issued2004-07-06
dc.identifier.citationAnttila, T. Kerminen, V.-M.; Kulmala, M.; Laaksonen, A.; O'Dowd, C. D. (2004). Modelling the formation of organic particles in the atmosphere. Atmospheric Chemistry and Physics 4 , 1071-1083
dc.identifier.issn1680-7324
dc.identifier.urihttp://hdl.handle.net/10379/8835
dc.description.abstractParticle formation resulting from activation of inorganic stable clusters by a supersaturated organic vapour was investigated using a numerical model. The applied aerosol dynamic model included a detailed description of the activation process along with a treatment of the appropriate aerosol and gas-phase processes. The obtained results suggest that both gaseous sulphuric acid and organic vapours contribute to organic particle formation in continental background areas. The initial growth of freshly-nucleated clusters is driven mainly by condensation of gaseous sulphuric acid and by a lesser extent self-coagulation. After the clusters have reached sizes of around 2 nm in diameter, low-volatile organic vapours start to condense spontaneously into the clusters, thereby accelerating their growth to detectable sizes. A shortage of gaseous sulphuric acid or organic vapours limit, or suppress altogether, the particle formation, since freshly-nucleated clusters are rapidly coagulated away by pre-existing particles. The obtained modelling results were applied to explaining the observed seasonal cycle in the number of aerosol formation events in a continental forest site.
dc.publisherCopernicus GmbH
dc.relation.ispartofAtmospheric Chemistry and Physics
dc.subjectcontinental boundary-layer
dc.subjectaerosol formation
dc.subjectboreal forest
dc.subjectgrowth
dc.subjectnuclei
dc.subjectacids
dc.subjecto-3
dc.subject1-tetradecene
dc.subjectozonolysis
dc.subjectmechanism
dc.titleModelling the formation of organic particles in the atmosphere
dc.typeArticle
dc.identifier.doi10.5194/acp-4-1071-2004
dc.local.publishedsourcehttps://www.atmos-chem-phys.net/4/1071/2004/acp-4-1071-2004.pdf
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