Biogeosciences
Biogeosciences
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Articles | Volume 22, issue 19
Articles | Volume 22, issue 19
https://doi.org/10.5194/bg-22-5413-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-5413-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 19
Research article
 | 
09 Oct 2025
Research article |  | 09 Oct 2025

Temporal patterns of greenhouse gas emissions from two small thermokarst lakes in Nunavik, Canada

Amélie Pouliot, Isabelle Laurion, Antoine Thiboult, and Daniel F. Nadeau

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Short summary
Small thermokarst lakes release greenhouse gases (GHGs) as permafrost thaws, but most studies focus on diurnal measurements, potentially overlooking significant variations. We measured GHG fluxes from two lakes in Nunavik over two summers – one colder, one warmer – alongside 2 years of continuous water column monitoring. Fluxes were higher in the warmer summer, with strong day–night differences. Our findings show that accurate GHG estimates require full diel measurements and seasonal considerations.
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