Articles | Volume 17, issue 14
Atmos. Chem. Phys., 17, 8923–8938, 2017
https://doi.org/10.5194/acp-17-8923-2017

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

Atmos. Chem. Phys., 17, 8923–8938, 2017
https://doi.org/10.5194/acp-17-8923-2017

Research article 25 Jul 2017

Research article | 25 Jul 2017

Evaporation of sulfate aerosols at low relative humidity

Georgios Tsagkogeorgas et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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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
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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.
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