Biogeosciences
Biogeosciences
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Articles | Volume 19, issue 21
Articles | Volume 19, issue 21
https://doi.org/10.5194/bg-19-5041-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-19-5041-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 21
Research article
 | 
02 Nov 2022
Research article |  | 02 Nov 2022

Pore network modeling as a new tool for determining gas diffusivity in peat

Petri Kiuru, Marjo Palviainen, Arianna Marchionne, Tiia Grönholm, Maarit Raivonen, Lukas Kohl, and Annamari Laurén

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Latest update: 18 Apr 2024
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Short summary
Peatlands are large carbon stocks. Emissions of carbon dioxide and methane from peatlands may increase due to changes in management and climate. We studied the variation in the gas diffusivity of peat with depth using pore network simulations and laboratory experiments. Gas diffusivity was found to be lower in deeper peat with smaller pores and lower pore connectivity. However, gas diffusivity was not extremely low in wet conditions, which may reflect the distinctive structure of peat.
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