EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Sources of atmospheric methane in Arctic: observations and model simulation

Yury Shtabkin, Konstantin Moiseenko, and Andrey Skorokhod
Yury Shtabkin et al.
  • A.M.Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Department of Atmospheric Chemistry, Moscow, Russian Federation (

The second most important greenhouse gas in atmosphere after carbon dioxide (CO2) is methane, CH4. The limited data of surface methane observations in Arctic makes it difficult to quantify the impact of methane emissions from major regional anthropogenic and biogenic sources on this region. This gap is partially filled by long-term observations at arctic and subarctic stations. According to these observations, since 2005, there has been a noticeable increase in the surface methane concentration. The reasons of this increase are still not fully understood. This work provides quantitative estimates of possible contribution into surface CH4 observed long-term variability from the most important regional sources of methane emissions.

To analyze variations in surface methane concentration was used the data from observations at background monitoring stations, as well as numerical calculations performed by GEOS-Chem chemical-transport model, which is widely used in international community for calculating the fields of chemically active and greenhouse gases.

How to cite: Shtabkin, Y., Moiseenko, K., and Skorokhod, A.: Sources of atmospheric methane in Arctic: observations and model simulation, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-13688,, 2021.