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

Douglas, Peter M. J.; Stratigopoulos, Emerald; Park, Sanga; Phan, Dawson

doi:https://doi.org/10.5194/bg-18-3505-2021

Articles | Volume 18, issue 11

https://doi.org/10.5194/bg-18-3505-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-18-3505-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 11

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, Emerald Stratigopoulos, Sanga Park, and Dawson Phan

Supplement

https://doi.org/10.5194/bg-18-3505-2021-supplement

Data sets

Data for geographic variability in freshwater methane hydrogen isotope ratios and its implications for emissions source apportionment and microbial biogeochemistry Peter M. J. Douglas, Emerald Stratigopoulos, Jenny Park, and Dawson Phan https://doi.org/10.6084/m9.figshare.13194833.v2

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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.