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dc.contributor.authorPirjola, Liisa
dc.date.accessioned2018-08-24T08:26:11Z
dc.date.available2018-08-24T08:26:11Z
dc.date.issued2002-01-01
dc.identifier.citationPirjola, Liisa (2002). A model prediction of the yield of cloud condensation nuclei from coastal nucleation events. Journal of Geophysical Research 107 ,
dc.identifier.issn0148-0227
dc.identifier.urihttp://hdl.handle.net/10379/9781
dc.description.abstract[1] The formation and evolution of new particles during coastal nucleation events are examined using the aerosol dynamic and gas-phase chemistry model AEROFOR2. Coastal regions are known to be a strong source of natural aerosol particles and are also strong sources of biogenic vapors which can condense onto aerosol particles, thus resulting in particle growth. A number of model simulations were performed to determine the instantaneous nucleation rate along with the source rate of a generic biogenic vapor leading to the observed particle size distributions which indicate the rapid appearance of similar to10(5)-10(6) cm(-3) nucleation mode particles in this environment. Model calculations suggest values of 3 x 10(5) cm(-3) s(-1) to 3 x 10(6) cm(-3) s(-1) for the instantaneous nucleation rate and a value of 5 x 10(7) cm(-3) s(-1) for the condensable vapor source rate in order to reproduce the observed concentrations. A significant fraction of these new particles survive to grow into cloud condensation nuclei (CCN) sizes for supersaturations typically encountered in boundary layer clouds during subsequent evolution over 3 days under clear-sky conditions, thus contributing to the indirect radiative effect of aerosols. The amount of CCN is mainly affected by coagulation between particles and condensation of the biogenic vapor and, to a lesser extent, by condensation of sulphuric acid formed by DMS oxidation. In all simulated cases, an increase of more than 100% in CCN concentration, for supersaturations >0.35% was observed.
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of Geophysical Research
dc.subjectaerosol dynamics
dc.subjectcoastal particles
dc.subjectnucleation rate
dc.subjectvapor source rate
dc.subjectccn
dc.subjectmarine boundary-layer
dc.subjectsulfate aerosol formation
dc.subjectsea-salt aerosol
dc.subjectparticle formation
dc.subjectfree troposphere
dc.subjectnorth-atlantic
dc.subjectsulfuric-acid
dc.subjectatmospheric particles
dc.subjectsize distribution
dc.subjectdimethyl sulfide
dc.titleA model prediction of the yield of cloud condensation nuclei from coastal nucleation events
dc.typeArticle
dc.identifier.doi10.1029/2000jd000213
dc.local.publishedsourcehttp://onlinelibrary.wiley.com/doi/10.1029/2000JD000213/pdf
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