A phenomenology of new particle formation (NPF) at 13 European sites

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dc.contributor.author Bousiotis, Dimitrios
dc.contributor.author Pope, Francis D.
dc.contributor.author Beddows, David C. S.
dc.contributor.author Dall'Osto, Manuel
dc.contributor.author Massling, Andreas
dc.contributor.author Klenø Nøjgaard, Jakob
dc.contributor.author Nordstrøm, Claus
dc.contributor.author Niemi, Jarkko V.
dc.contributor.author Portin, Harri
dc.contributor.author Petäjä, Tuukka
dc.contributor.author Perez, Noemi
dc.contributor.author Alastuey, Andrés
dc.contributor.author Querol, Xavier
dc.contributor.author Kouvarakis, Giorgos
dc.contributor.author Mihalopoulos, Nikos
dc.contributor.author Vratolis, Stergios
dc.contributor.author Eleftheriadis, Konstantinos
dc.contributor.author Wiedensohler, Alfred
dc.contributor.author Weinhold, Kay
dc.contributor.author Merkel, Maik
dc.contributor.author Tuch, Thomas
dc.contributor.author Harrison, Roy M.
dc.date.accessioned 2021-09-29T13:36:01Z
dc.date.available 2021-09-29T13:36:01Z
dc.date.issued 2021-08-10
dc.identifier.citation Bousiotis , D , Pope , F D , Beddows , D C S , Dall'Osto , M , Massling , A , Klenø Nøjgaard , J , Nordstrøm , C , Niemi , J V , Portin , H , Petäjä , T , Perez , N , Alastuey , A , Querol , X , Kouvarakis , G , Mihalopoulos , N , Vratolis , S , Eleftheriadis , K , Wiedensohler , A , Weinhold , K , Merkel , M , Tuch , T & Harrison , R M 2021 , ' A phenomenology of new particle formation (NPF) at 13 European sites ' , Atmospheric Chemistry and Physics , vol. 21 , no. 15 , pp. 11905-11925 . https://doi.org/10.5194/acp-21-11905-2021
dc.identifier.other PURE: 168846577
dc.identifier.other PURE UUID: 96ab78b2-cdcb-4dd0-a2c0-5c4914efe8ff
dc.identifier.other WOS: 000684235400002
dc.identifier.other Scopus: 85112706055
dc.identifier.other ORCID: /0000-0002-1881-9044/work/102822931
dc.identifier.uri http://hdl.handle.net/10138/334718
dc.description.abstract New particle formation (NPF) events occur almost everywhere in the world and can play an important role as a particle source. The frequency and characteristics of NPF events vary spatially, and this variability is yet to be fully understood. In the present study, long-term particle size distribution datasets (minimum of 3 years) from 13 sites of various land uses and climates from across Europe were studied, and NPF events, deriving from secondary formation and not traffic-related nucleation, were extracted and analysed. The frequency of NPF events was consistently found to be higher at rural background sites, while the growth and formation rates of newly formed particles were higher at roadsides (though in many cases differences between the sites were small), underlining the importance of the abundance of condensable compounds of anthropogenic origin found there. The growth rate was higher in summer at all rural background sites studied. The urban background sites presented the highest uncertainty due to greater variability compared to the other two types of site. The origin of incoming air masses and the specific conditions associated with them greatly affect the characteristics of NPF events. In general, cleaner air masses present higher probability for NPF events, while the more polluted ones show higher growth rates. However, different patterns of NPF events were found, even at sites in close proximity (< 200 km), due to the different local conditions at each site. Region-wide events were also studied and were found to be associated with the same conditions as local events, although some variability was found which was associated with the different seasonality of the events at two neighbouring sites. NPF events were responsible for an increase in the number concentration of ultrafine particles of more than 400% at rural background sites on the day of their occurrence. The degree of enhancement was less at urban sites due to the increased contribution of other sources within the urban environment. It is evident that, while some variables (such as solar radiation intensity, relative humidity, or the concentrations of specific pollutants) appear to have a similar influence on NPF events across all sites, it is impossible to predict the characteristics of NPF events at a site using just these variables, due to the crucial role of local conditions. en
dc.format.extent 21
dc.language.iso eng
dc.relation.ispartof Atmospheric Chemistry and Physics
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 114 Physical sciences
dc.title A phenomenology of new particle formation (NPF) at 13 European sites en
dc.type Article
dc.contributor.organization Institute for Atmospheric and Earth System Research (INAR)
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.5194/acp-21-11905-2021
dc.relation.issn 1680-7316
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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