Contribution of new particle formation to the total aerosol concentration at the high‐altitude site Jungfraujoch (3580 m asl, Switzerland)

dc.contributor.authorTröstl, Jasmin
dc.contributor.authorHerrmann, Erik
dc.contributor.authorFrege, Carla
dc.contributor.authorBianchi, Federico
dc.contributor.authorMolteni, Ugo
dc.contributor.authorBukowiecki, Nicolas
dc.contributor.authorHoyle, Christopher R.
dc.contributor.authorSteinbacher, Martin
dc.contributor.authorWeingartner, Ernest
dc.contributor.authorDommen, Josef
dc.contributor.authorGysel, Martin
dc.contributor.authorBaltensperger, Urs
dc.date.accessioned2024-01-17T10:26:11Z
dc.date.available2024-01-17T10:26:11Z
dc.date.issued2016
dc.description.abstractPrevious modeling studies hypothesized that a large fraction of cloud condensation nuclei (CCN) is attributed to new particle formation (NPF) in the free troposphere. Despite the potential importance of this process, only few long‐term observations have been performed to date. Here we present the results of a 12 month campaign of NPF observations at the high‐altitude site Jungfraujoch (JFJ, 3580 m above sea level (asl)). Our results show that NPF significantly adds to the total aerosol concentration at the JFJ and only occurs via previous precursor entrainment from the planetary boundary layer (PBL). Freshly nucleated particles do not directly grow to CCN size (90 nm) within observable time scales (maximum 48 h). The contribution of NPF to the CCN concentration is low within this time frame compared to other sources, such as PBL entrainment of larger particles. A multistep growth mechanism is proposed which allows previously formed Aitken mode particles to add to the CCN concentration. A parametrization is derived to explain formation rates at the JFJ, showing that precursor concentration, PBL influence, and global radiation are the key factors controlling new particle formation at the site.
dc.identifier.doihttps://doi.org/10.1002/2015JD024637
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.urihttps://irf.fhnw.ch/handle/11654/43837
dc.identifier.urihttps://doi.org/10.26041/fhnw-7755
dc.issue19
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofJournal of Geophysical Research: Atmospheres
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.spatialWeinheim
dc.subject.ddc550 - Geowissenschaften
dc.titleContribution of new particle formation to the total aerosol concentration at the high‐altitude site Jungfraujoch (3580 m asl, Switzerland)
dc.type01A - Beitrag in wissenschaftlicher Zeitschrift
dc.volume121
dspace.entity.typePublication
fhnw.InventedHereYes
fhnw.ReviewTypeAnonymous ex ante peer review of a complete publication
fhnw.affiliation.hochschuleHochschule für Technikde_CH
fhnw.affiliation.institutlnstitut für Sensorik und Elektronikde_CH
fhnw.openAccessCategoryGreen
fhnw.pagination11692-11711
fhnw.publicationStatePublished
relation.isAuthorOfPublicationf08b3d68-4d22-4e97-b70d-baa89e411911
relation.isAuthorOfPublication05dd9a19-7a24-4325-805a-2d121483b168
relation.isAuthorOfPublication54997bb8-cf4a-4120-b0c7-f8e731e8eea1
relation.isAuthorOfPublication.latestForDiscoveryf08b3d68-4d22-4e97-b70d-baa89e411911
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