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Aerosol particle formation events and analysis of high growth rates observed above a subarctic wetland–forest mosaic
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2008 (engelsk)Inngår i: Tellus. Series B, Chemical and physical meteorology, ISSN 0280-6509, E-ISSN 1600-0889, Vol. 60, nr 3, s. 353-364Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

An analysis of particle formation (PF) events over a subarctic mire in northern Sweden was performed, based on number–size distributions of atmospheric aerosol particles (10–500 nm in diameter) and ions (0.4–40 nm in Tammet diameter). We present classification statistics for PF events from measurements covering the period July 2005–September 2006, with a break over the winter period. The PF event frequency peaked during the summer months, in contrast to other Scandinavian sites where the frequency is highest during spring and autumn. Our analysis includes calculated growth rates and estimates of concentrations and production rates of condensing vapour, deduced from the growth rates and condensational sink calculations, using AIS and SMPS data. Particle formation events with high growth rates (up to 50 nm h−1) occurred repeatedly. In these cases, the newly formed nucleation mode particles were often only present for periods of a few hours. On several occasions, repeated particle formation events were observed within 1 d, with differences in onset time of a few hours. These high growth rates were only observed when the condensation sink was higher than 0.001 s−1.

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John Wiley & Sons, Ltd (10.1111) , 2008. Vol. 60, nr 3, s. 353-364
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URN: urn:nbn:se:polar:diva-7978DOI: 10.1111/j.1600-0889.2008.00351.xOAI: oai:DiVA.org:polar-7978DiVA, id: diva2:1284504
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2019/01/31
Tilgjengelig fra: 2019-01-31 Laget: 2019-01-31 Sist oppdatert: 2019-01-31bibliografisk kontrollert

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Forlagets fullteksthttps://doi.org/10.1111/j.1600-0889.2008.00351.x
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Tellus. Series B, Chemical and physical meteorology

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