Low methane (CH<sub>4</sub>) emissions downstream of a monomictic subtropical  hydroelectric reservoir (Nam Theun 2, Lao PDR)

Deshmukh, Chandrashekhar; Guérin, Frédéric; Labat, David; Pighini, Sylvie; Vongkhamsao, Axay; Guédant, Pierre; Rode, Wanidaporn; Godon, Arnaud; Chanudet, Vincent; Descloux, Stéphane; Serça, Dominique

doi:https://doi.org/10.5194/bg-13-1919-2016

Articles | Volume 13, issue 6

https://doi.org/10.5194/bg-13-1919-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/bg-13-1919-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 6

Research article

|

30 Mar 2016

Research article |

| 30 Mar 2016

Low methane (CH₄) emissions downstream of a monomictic subtropical hydroelectric reservoir (Nam Theun 2, Lao PDR)

Chandrashekhar Deshmukh, Frédéric Guérin, David Labat, Sylvie Pighini, Axay Vongkhamsao, Pierre Guédant, Wanidaporn Rode, Arnaud Godon, Vincent Chanudet, Stéphane Descloux, and Dominique Serça

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Final revised paper (published on 30 Mar 2016)
Preprint (discussion started on 20 Jul 2015)
Companion Paper

Interactive discussion

Status: closed

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

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- Supplement

RC C7794: 'Review of BGD 12-11313-2015 “Low methane (CH4) emissions downstream of a monomictic subtropical hydroelectric reservoir (Nam Theun 2, Lao PDR).', Damien Maher, 19 Nov 2015
- RC C7884: 'review', Anonymous Referee #2, 23 Nov 2015
  - AC C9525: 'Answers to reviewer 2', Frédéric Guérin, 01 Feb 2016
AC C9529: 'answers to Damien Maher Comments', Frédéric Guérin, 01 Feb 2016

Peer-review completion

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

ED: Publish subject to minor revisions (Editor review) (03 Feb 2016) by S. Wajih A. Naqvi

AR by Frédéric Guérin on behalf of the Authors (03 Feb 2016) Author's response Manuscript

ED: Publish subject to technical corrections (12 Feb 2016) by S. Wajih A. Naqvi

AR by Frédéric Guérin on behalf of the Authors (12 Feb 2016) Author's response Manuscript

Short summary

Methane (CH₄) emissions from hydroelectric reservoirs could represent a significant fraction of global CH₄ emissions from inland waters and wetlands. The first quantification of emissions downstream of a subtropical reservoir shows that they contribute only 10 to 30 % of total CH4 emissions from the reservoir. This surprisingly low contribution is due to the seasonal reservoir overturn and the effect of the turbine on re-aerating the reservoir water column.

Low methane (CH4) emissions downstream of a monomictic subtropical hydroelectric reservoir (Nam Theun 2, Lao PDR)

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Interactive discussion

Peer-review completion

Low methane (CH₄) emissions downstream of a monomictic subtropical hydroelectric reservoir (Nam Theun 2, Lao PDR)