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

Yan, Chao; Dada, Lubna; Rose, Clémence; Jokinen, Tuija; Nie, Wei; Schobesberger, Siegfried; Junninen, Heikki; Lehtipalo, Katrianne; Sarnela, Nina; Makkonen, Ulla; Garmash, Olga; Wang, Yonghong; Zha, Qiaozhi; Paasonen, Pauli; Bianchi, Federico; Sipilä, Mikko; Ehn, Mikael; Petäjä, Tuukka; Kerminen, Veli-Matti; Worsnop, Douglas R.; Kulmala, Markku

doi:https://doi.org/10.5194/acp-18-13231-2018

Articles | Volume 18, issue 17

https://doi.org/10.5194/acp-18-13231-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-13231-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 17

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, Lubna Dada, Clémence Rose, Tuija Jokinen, Wei Nie, Siegfried Schobesberger, Heikki Junninen, Katrianne Lehtipalo, Nina Sarnela, Ulla Makkonen, Olga Garmash, Yonghong Wang, Qiaozhi Zha, Pauli Paasonen, Federico Bianchi, Mikko Sipilä, Mikael Ehn, Tuukka Petäjä, Veli-Matti Kerminen, Douglas R. Worsnop, and Markku Kulmala

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Final revised paper (published on 13 Sep 2018)
Preprint (discussion started on 10 Apr 2018)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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RC1: 'Paper Review', Anonymous Referee #1, 23 Apr 2018
- AC1: 'Reply to RC1', C. Yan, 02 Jul 2018
RC2: 'review of acp-2018-187', Anonymous Referee #2, 14 Jun 2018
- AC2: 'Reply to RC2', C. Yan, 02 Jul 2018

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Chao Yan on behalf of the Authors (02 Jul 2018) Author's response

ED: Referee Nomination & Report Request started (05 Jul 2018) by Gordon McFiggans

RR by Anonymous Referee #2 (18 Jul 2018)

ED: Reconsider after major revisions (03 Aug 2018) by Gordon McFiggans

AR by Chao Yan on behalf of the Authors (11 Aug 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (15 Aug 2018) by Gordon McFiggans

RR by Anonymous Referee #2 (22 Aug 2018)

ED: Publish as is (22 Aug 2018) by Gordon McFiggans

AR by Chao Yan on behalf of the Authors (26 Aug 2018) Manuscript

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.