Biogeosciences
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Articles | Volume 23, issue 2
Articles | Volume 23, issue 2
https://doi.org/10.5194/bg-23-727-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-727-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 2
Research article
 | 
26 Jan 2026
Research article |  | 26 Jan 2026

Variability of greenhouse gas (CH4 and CO2) emissions in a subtropical hydroelectric reservoir: Nam Theun 2 (Lao PDR)

Anh-Thái Hoàng, Frédéric Guérin, Chandrashekhar Deshmukh, Axay Vongkhamsao, Saysoulinthone Sopraseuth, Vincent Chanudet, Stéphane Descloux, Nurholis Nurholis, Ari Putra Susanto, Toan Vu Duc, and Dominique Serça

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Short summary
We studied greenhouse gas emissions from a large reservoir in Laos over 14 years to understand carbon cycling and changes over time. Methane release through bubbling remained high, while other pathways, like diffusion and degassing, declined. These findings show how emissions evolve as reservoirs age and highlight the value of long-term studies for understanding the climate impact of hydropower.
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