Articles | Volume 17, issue 4
https://doi.org/10.5194/acp-17-2613-2017
https://doi.org/10.5194/acp-17-2613-2017
Research article
 | 
21 Feb 2017
Research article |  | 21 Feb 2017

Chemical characterization of atmospheric ions at the high altitude research station Jungfraujoch (Switzerland)

Carla Frege, Federico Bianchi, Ugo Molteni, Jasmin Tröstl, Heikki Junninen, Stephan Henne, Mikko Sipilä, Erik Herrmann, Michel J. Rossi, Markku Kulmala, Christopher R. Hoyle, Urs Baltensperger, and Josef Dommen

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Latest update: 27 Mar 2024
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Short summary
We present measurements of the chemical composition of atmospheric ions at high altitude (3450 m a.s.l.) during a 9-month campaign. We detected remarkably high correlation between methanesulfonic acid (MSA) and SO5. Halogenated species were also detected frequently at this continental location. New-particle formation events occurred via the condensation of highly oxygenated molecules (HOMs) at very low sulfuric acid concentration or, less frequently, due to ammonia–sulfuric acid clusters.
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