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.
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.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Jun 2021
Research article |
| 11 Jun 2021
| 11 Jun 2021
Geographic variability in freshwater methane hydrogen isotope ratios and its implications for global isotopic source signatures
Peter M. J. Douglas
CORRESPONDING AUTHOR
Earth and Planetary Sciences, McGill University, Montreal, H3A 0E8,
Canada
Emerald Stratigopoulos
Earth and Planetary Sciences, McGill University, Montreal, H3A 0E8,
Canada
now at: Department of Earth Sciences, University of Toronto, Toronto, M5S
3B1, Canada
Sanga Park
Department of Chemistry, McGill University, Montreal H3A 0B8, Canada
Dawson Phan
Earth and Planetary Sciences, McGill University, Montreal, H3A 0E8,
Canada
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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.
Hydrogen isotopes could be a useful tool to help resolve the geographic distribution of methane...
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