EGU24-9601, updated on 08 Mar 2024
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Modelling the northern peatland methane fluxes with a process-based model

Mousong Wu1, Wenzuo Duan2, Koffi Noumonvi3, Joshua Ratcliffe3, Mats Nilsson3, Matthias Peichl3, and Per-Erik Jansson4
Mousong Wu et al.
  • 1International Institute for Earth System Science, Nanjing University, China (
  • 2Nanjing University, China (
  • 3Department of Forest Ecology and Management – Swedish University of Agricultural Sciences, Umeå, Sweden (,,,
  • 4KTH Royal Institute of Technology, Stockholm, Sweden (

Northern peatlands are significant carbon reservoirs, serving as long-term atmospheric carbon dioxide sinks and sources of methane and nitrogen dioxide. However, methane processes interacting with environmental changes in Northern peatlands, remain unclear. Therefore, the need for better simulation of key processes of methane in peatlands is still urgent. In this study we used the process-based CoupModel combining the long-term in-situ measurements to successfully constrain the energy, water and carbon fluxes modeling in a boreal peatland (CH4, r2=0.62). We noticed that plant transportation is the most dominant pathway for methane emissions from this peatland (57.87% of total CH4 emission), followed by surface diffusion (31.06%) and ebullition (11.07%). The relationship between CH4 fluxes and water table depth is non-linear, and the dominant CH4 emission pathway varies as the water table regime changes. Our study provided new insights into the emission mechanisms of methane in boreal minerotrophic mire and contributed to a better understanding of boreal peatlands for both modelling and observation communities.

How to cite: Wu, M., Duan, W., Noumonvi, K., Ratcliffe, J., Nilsson, M., Peichl, M., and Jansson, P.-E.: Modelling the northern peatland methane fluxes with a process-based model, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-9601,, 2024.