Eddy covariance flux measurements of gaseous elemental mercury over a grassland

Osterwalder, Stefan; Eugster, Werner; Feigenwinter, Iris; Jiskra, Martin

doi:https://doi.org/10.5194/amt-13-2057-2020

Articles | Volume 13, issue 4

https://doi.org/10.5194/amt-13-2057-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-13-2057-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 4

Research article

|

22 Apr 2020

Research article |

| 22 Apr 2020

Eddy covariance flux measurements of gaseous elemental mercury over a grassland

Stefan Osterwalder, Werner Eugster, Iris Feigenwinter, and Martin Jiskra

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Final revised paper (published on 22 Apr 2020)
Preprint (discussion started on 06 Aug 2019)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of Osterwalder et al', Anonymous Referee #1, 17 Sep 2019
- AC1: 'Response to Referee 1', Stefan Osterwalder, 24 Jan 2020
RC2: 'Review comments on "First eddy covariance flux measurements of gaseous elemental mercury (Hg0) over a grassland" by Osterwalder et al.', Anonymous Referee #2, 27 Dec 2019
- AC2: 'Response to Referee 2', Stefan Osterwalder, 24 Jan 2020

Peer-review completion

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

AR by Stefan Osterwalder on behalf of the Authors (13 Feb 2020) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (16 Mar 2020) by Robyn Schofield

AR by Stefan Osterwalder on behalf of the Authors (18 Mar 2020) Author's response Manuscript

ED: Publish as is (21 Mar 2020) by Robyn Schofield

AR by Stefan Osterwalder on behalf of the Authors (23 Mar 2020)

Short summary

Direct mercury (Hg) flux studies are crucial to improve our understanding of terrestrial Hg cycling and human Hg exposure. We tested a new system to measure Hg fluxes using the eddy covariance technique. Our Eddy Mercury system revealed a net Hg re-emission flux from a grassland. We concluded that the prevailing dry conditions resulted in low uptake of CO₂ and Hg. Eddy Mercury has the potential to address some of the largest uncertainties in global Hg cycling through long-term flux measurements.