Articles | Volume 18, issue 17
Atmos. Chem. Phys., 18, 13231–13243, 2018
https://doi.org/10.5194/acp-18-13231-2018
Atmos. Chem. Phys., 18, 13231–13243, 2018
https://doi.org/10.5194/acp-18-13231-2018

Research article 13 Sep 2018

Research article | 13 Sep 2018

The role of H2SO4-NH3 anion clusters in ion-induced aerosol nucleation mechanisms in the boreal forest

Chao Yan et al.

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Latest update: 12 Apr 2021
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Short summary
Ions can play an important role in atmospheric new particle formation by stabilizing the embryonic clusters. Such a process is called ion-induced nucleation (IIN). We found two distinct IIN mechanisms – driven by H2SO4-NH3 clusters and by organic vapors, respectively. The concentration ratio of organic vapors to H2SO4 regulates via which pathway the IIN occur. As the organic vapor concentration is influenced by temperature, a seasonal variation in the main IIN mechanism can be expected.
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