Articles | Volume 17, issue 7
Biogeosciences, 17, 1911–1932, 2020
https://doi.org/10.5194/bg-17-1911-2020
Biogeosciences, 17, 1911–1932, 2020
https://doi.org/10.5194/bg-17-1911-2020

Research article 08 Apr 2020

Research article | 08 Apr 2020

Drivers of diffusive CH4 emissions from shallow subarctic lakes on daily to multi-year timescales

Joachim Jansen et al.

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Latest update: 24 Feb 2021
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Short summary
Lakes are important emitters of the greenhouse gas methane. We use field observations and a model to evaluate the importance of known drivers of methane production and release. Fast and slow changes of the diffusive flux were governed by wind speed and sediment temperature, respectively. Increased turbulence enhanced release, but storms depleted the lakes of gas and limited emissions. Our findings may inform model studies on the effects of weather and climate change on lake methane emissions.
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