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Atmospheric sub-3nm particles at high altitudes

Mirme, Sander und Mirme, Aadu und Minikin, Andreas und Petzold, Andreas und Horrak, Urmas und Kerminen, Veli-Matti und Kulmala, Markku (2010) Atmospheric sub-3nm particles at high altitudes. Atmospheric Chemistry and Physics, 10, Seiten 437-451.

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Offizielle URL: http://www.atmos-chem-phys.net/10/437/2010/


Formation of new atmospheric aerosol particles is known to occur almost all over the world and the importance of these particles to climate and air quality has been recognized. Recently, it was found that atmospheric aerosol formation begins at particle diameter of around 1.5�2.0 nm and a pool of sub-3 nm atmospheric particles � consisting of both charged and uncharged ones � was observed at the ground level. Here, we report on the first airborne observations of the pool of sub-3nm neutral atmospheric particles. Between 2 and 3 nm, their concentration is roughly two orders of agnitude larger than that of the ion clusters, depending slightly on the altitude. Our findings indicate that new particle formation takes place actively throughout the tropospheric column up to the tropopause. Particles were found to be formed via neutral pathways in the boundary layer, and there was no sign of an increasing role by ion-induced nucleation toward the upper troposphere. Clouds, while acting as a source of sub-10nm ions, did not perturb the overall budget of atmospheric clusters or particles.

Titel:Atmospheric sub-3nm particles at high altitudes
AutorenInstitution oder E-Mail-Adresse der Autoren
Mirme, SanderUniv. of Tartu, EST
Mirme, AaduUniv. of Tartu, EST
Minikin, AndreasDLR
Petzold, AndreasDLR
Horrak, UrmasUniv. of Tartu, EST
Kerminen, Veli-MattiFMI, Helsinki, FIN
Kulmala, MarkkuUniv. of Helsinki, FIN
Erschienen in:Atmospheric Chemistry and Physics
Referierte Publikation:Ja
In Open Access:Ja
In ISI Web of Science:Ja
Seitenbereich:Seiten 437-451
Stichwörter:atmospheric aerosol, ions, EUCAARI, airborne measurements
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Atmosphären- und Klimaforschung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Dr.rer.nat. Andreas Petzold
Hinterlegt am:14 Dez 2009 12:38
Letzte Änderung:12 Dez 2013 20:48

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