Understanding mercury oxidation and air–snow exchange on the East Antarctic Plateau: a modeling study

Song, Shaojie; Angot, Hélène; Selin, Noelle E.; Gallée, Hubert; Sprovieri, Francesca; Pirrone, Nicola; Helmig, Detlev; Savarino, Joël; Magand, Olivier; Dommergue, Aurélien

doi:https://doi.org/10.5194/acp-18-15825-2018

Articles | Volume 18, issue 21

https://doi.org/10.5194/acp-18-15825-2018

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

https://doi.org/10.5194/acp-18-15825-2018

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

Articles | Volume 18, issue 21

Research article

|

05 Nov 2018

Research article |

| 05 Nov 2018

Understanding mercury oxidation and air–snow exchange on the East Antarctic Plateau: a modeling study

Shaojie Song, Hélène Angot, Noelle E. Selin, Hubert Gallée, Francesca Sprovieri, Nicola Pirrone, Detlev Helmig, Joël Savarino, Olivier Magand, and Aurélien Dommergue

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

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RC1: 'Understanding mercury oxidation and air-snow exchange on the East Antarctic Plateau: A modeling study', Anonymous Referee #1, 22 Aug 2018
RC2: 'Comments on “Understanding mercury oxidation and air-snow exchange on the East Antarctic Plateau: A modeling study” by Shaojie Song et al.', Anonymous Referee #2, 19 Sep 2018
AC1: 'Responses to two anonymous referees' comments on behalf of all authors', Shaojie Song, 26 Sep 2018

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

AR by Shaojie Song on behalf of the Authors (26 Sep 2018) Author's response Manuscript

ED: Publish subject to technical corrections (23 Oct 2018) by Carlo Barbante

AR by Shaojie Song on behalf of the Authors (23 Oct 2018) Manuscript

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Short summary

Mercury is a trace metal with adverse health effects on human and wildlife. Its unique property makes it undergo long-range transport, and even remote Antarctica receives significant inputs. This paper presents the first model that aims to understand mercury behavior over the Antarctic Plateau. We find that mercury is quickly cycled between snow and air in the sunlit period, likely driven by bromine chemistry, and that several uncertain processes contribute to its behavior in the dark period.