The potential role of methanesulfonic acid (MSA) in aerosol formation and growth and the associated radiative forcings

Hodshire, Anna L.; Campuzano-Jost, Pedro; Kodros, John K.; Croft, Betty; Nault, Benjamin A.; Schroder, Jason C.; Jimenez, Jose L.; Pierce, Jeffrey R.

doi:https://doi.org/10.5194/acp-19-3137-2019

Articles | Volume 19, issue 5

https://doi.org/10.5194/acp-19-3137-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-3137-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 5

Research article

|

12 Mar 2019

Research article |

| 12 Mar 2019

The potential role of methanesulfonic acid (MSA) in aerosol formation and growth and the associated radiative forcings

Anna L. Hodshire, Pedro Campuzano-Jost, John K. Kodros, Betty Croft, Benjamin A. Nault, Jason C. Schroder, Jose L. Jimenez, and Jeffrey R. Pierce

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Final revised paper (published on 12 Mar 2019)
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Preprint (discussion started on 07 Nov 2018)
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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: 'Review of Hodshire et al., 'The potential role of methanesulfonic acid (MSA) in aerosol formation and growth and the associated radiative forcings'', Anonymous Referee #2, 10 Jan 2019
- AC1: 'Author responses to reviewer #2 and reviewer #3', Anna Hodshire, 13 Feb 2019
RC2: 'Referee comment', Anonymous Referee #3, 08 Feb 2019
- AC1: 'Author responses to reviewer #2 and reviewer #3', Anna Hodshire, 13 Feb 2019

Peer-review completion

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

AR by Anna Hodshire on behalf of the Authors (13 Feb 2019) Author's response

ED: Publish as is (18 Feb 2019) by Veli-Matti Kerminen

AR by Anna Hodshire on behalf of the Authors (25 Feb 2019)

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Short summary

A global chemical-transport model is used to determine the impact of methanesulfonic acid (MSA) on the aerosol size distribution and associated radiative effects, testing varying assumptions of MSA’s effective volatility and nucleating ability. We find that MSA mass best matches the ATom airborne measurements when volatility varies as a function of temperature, relative humidity, and available gas-phase bases, and the MSA radiative forcing is on the order of -50 mW m^-2 over the Southern Ocean.