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Atmospheric sub-3nm particles at high altitudes

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

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

Abstract

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.

Document Type:Article
Title:Atmospheric sub-3nm particles at high altitudes
Authors:
AuthorsInstitution or Email of Authors
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
Date:2010
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:10
Page Range:pp. 437-451
Status:Published
Keywords:atmospheric aerosol, ions, EUCAARI, airborne measurements
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Dr.rer.nat. Andreas Petzold
Deposited On:14 Dec 2009 12:38
Last Modified:12 Dec 2013 20:48

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