Atmospheric mercury in the Southern Hemisphere tropics: seasonal and diurnal variations and influence of inter-hemispheric transport

Howard, Dean; Nelson, Peter F.; Edwards, Grant C.; Morrison, Anthony L.; Fisher, Jenny A.; Ward, Jason; Harnwell, James; van der Schoot, Marcel; Atkinson, Brad; Chambers, Scott D.; Griffiths, Alan D.; Werczynski, Sylvester; Williams, Alastair G.

doi:https://doi.org/10.5194/acp-17-11623-2017

Articles | Volume 17, issue 18

https://doi.org/10.5194/acp-17-11623-2017

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

https://doi.org/10.5194/acp-17-11623-2017

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

Articles | Volume 17, issue 18

Research article

|

28 Sep 2017

Research article |

| 28 Sep 2017

Atmospheric mercury in the Southern Hemisphere tropics: seasonal and diurnal variations and influence of inter-hemispheric transport

Dean Howard, Peter F. Nelson, Grant C. Edwards, Anthony L. Morrison, Jenny A. Fisher, Jason Ward, James Harnwell, Marcel van der Schoot, Brad Atkinson, Scott D. Chambers, Alan D. Griffiths, Sylvester Werczynski, and Alastair G. Williams

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Final revised paper (published on 28 Sep 2017)
Preprint (discussion started on 21 Apr 2017)

Interactive discussion

Status: closed

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

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- Supplement

RC1: '„Atmospheric mercury in the southern hemisphere tropics: seasonal and diurnal variations and influence of inter-hemispheric transport” by Howard et al.', Anonymous Referee #1, 07 May 2017
- AC1: 'Author response to Reviewer 1', Dean Howard, 29 Jul 2017
  - AC3: 'Revised manuscript', Dean Howard, 29 Jul 2017
RC2: 'comment on Howard et al. acp-2017-307', Anonymous Referee #2, 19 May 2017
- AC2: 'Author response to Reviewer 2', Dean Howard, 29 Jul 2017
  - AC4: 'Revised manuscript', Dean Howard, 29 Jul 2017

Peer-review completion

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

AR by Dean Howard on behalf of the Authors (29 Jul 2017) Author's response Manuscript

ED: Publish as is (21 Aug 2017) by Aurélien Dommergue

AR by Dean Howard on behalf of the Authors (25 Aug 2017)

Short summary

Mercury, a toxic metal, can be transported globally through the atmosphere, with deposition to ecosystems an important pathway to human exposure. 2 years of atmospheric mercury monitoring in tropical Australia supports recent evidence that Southern Hemisphere concentrations are lower than previously thought. Exchange between the atmosphere and ecosystems can take place on daily scales, with night deposition offset by morning re-emission. This could be an important transport pathway for mercury.