Evaporation of sulfate aerosols at low relative humidity

Tsagkogeorgas, Georgios; Roldin, Pontus; Duplissy, Jonathan; Rondo, Linda; Tröstl, Jasmin; Slowik, Jay G.; Ehrhart, Sebastian; Franchin, Alessandro; Kürten, Andreas; Amorim, Antonio; Bianchi, Federico; Kirkby, Jasper; Petäjä, Tuukka; Baltensperger, Urs; Boy, Michael; Curtius, Joachim; Flagan, Richard C.; Kulmala, Markku; Donahue, Neil M.; Stratmann, Frank

doi:https://doi.org/10.5194/acp-17-8923-2017

Articles | Volume 17, issue 14

https://doi.org/10.5194/acp-17-8923-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

The CERN CLOUD experiment (ACP/AMT inter-journal SI)

https://doi.org/10.5194/acp-17-8923-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 14

Research article

|

25 Jul 2017

Research article |

| 25 Jul 2017

Evaporation of sulfate aerosols at low relative humidity

Georgios Tsagkogeorgas, Pontus Roldin, Jonathan Duplissy, Linda Rondo, Jasmin Tröstl, Jay G. Slowik, Sebastian Ehrhart, Alessandro Franchin, Andreas Kürten, Antonio Amorim, Federico Bianchi, Jasper Kirkby, Tuukka Petäjä, Urs Baltensperger, Michael Boy, Joachim Curtius, Richard C. Flagan, Markku Kulmala, Neil M. Donahue, and Frank Stratmann

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Interactive discussion

Status: closed

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

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RC1: 'Referee Comment on acp-2016-1045', Anonymous Referee #1, 01 Mar 2017
RC2: 'Review for acp-2016-1045', Anonymous Referee #2, 06 Mar 2017
AC1: 'Author Comment on acp-2016-1045', Georgios Tsagkogeorgas, 15 Apr 2017

Peer-review completion

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

AR by Georgios Tsagkogeorgas on behalf of the Authors (10 May 2017) Author's response Manuscript

ED: Publish as is (12 May 2017) by Yafang Cheng

AR by Georgios Tsagkogeorgas on behalf of the Authors (19 May 2017)

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Short summary

The H₂SO₄ vapour pressure plays key role in Earth's and Venus' atmospheres. In regions where RH is low and stabilising bases are scarce, H₂SO₄ can evaporate from particles; however the H₂SO₄ vapour pressure at low RH is uncertain. To address this, we measured H₂SO₄ evaporation versus T and RH in the CLOUD chamber and constrained the equilibrium constants for dissociation and dehydration of H₂SO₄. This study is important for nucleation, particle growth and H₂SO₄ formation occurring in atmosphere.