Articles | Volume 18, issue 11
Biogeosciences, 18, 3505–3527, 2021
https://doi.org/10.5194/bg-18-3505-2021
Biogeosciences, 18, 3505–3527, 2021
https://doi.org/10.5194/bg-18-3505-2021

Research article 11 Jun 2021

Research article | 11 Jun 2021

Geographic variability in freshwater methane hydrogen isotope ratios and its implications for global isotopic source signatures

Peter M. J. Douglas et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (22 Feb 2021) by Caroline P. Slomp
AR by Peter Douglas on behalf of the Authors (30 Mar 2021)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (02 Apr 2021) by Caroline P. Slomp
RR by Anonymous Referee #2 (23 Apr 2021)
RR by Edward Hornibrook (26 Apr 2021)
ED: Publish subject to minor revisions (review by editor) (08 May 2021) by Caroline P. Slomp
AR by Peter Douglas on behalf of the Authors (17 May 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (18 May 2021) by Caroline P. Slomp
AR by Peter Douglas on behalf of the Authors (18 May 2021)  Author's response    Manuscript
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Short summary
Hydrogen isotopes could be a useful tool to help resolve the geographic distribution of methane emissions from freshwater environments. We analyzed an expanded global dataset of freshwater methane hydrogen isotope ratios and found significant geographic variation linked to water isotopic composition. This geographic variability could be used to resolve changing methane fluxes from freshwater environments and provide more accurate estimates of the relative balance of global methane sources.
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