Disentangling methane and carbon dioxide sources and transport across the Russian Arctic from aircraft measurements

Narbaud, Clément; Paris, Jean-Daniel; Wittig, Sophie; Berchet, Antoine; Saunois, Marielle; Nédélec, Philippe; Belan, Boris D.; Arshinov, Mikhail Y.; Belan, Sergei B.; Davydov, Denis; Fofonov, Alexander; Kozlov, Artem

doi:https://doi.org/10.5194/acp-23-2293-2023

Articles | Volume 23, issue 3

https://doi.org/10.5194/acp-23-2293-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Pan-Eurasian Experiment (PEEX) – Part II

https://doi.org/10.5194/acp-23-2293-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 3

Research article

|

16 Feb 2023

Research article |

| 16 Feb 2023

Disentangling methane and carbon dioxide sources and transport across the Russian Arctic from aircraft measurements

Clément Narbaud, Jean-Daniel Paris, Sophie Wittig, Antoine Berchet, Marielle Saunois, Philippe Nédélec, Boris D. Belan, Mikhail Y. Arshinov, Sergei B. Belan, Denis Davydov, Alexander Fofonov, and Artem Kozlov

Data sets

Arctic campaign 2020 - YAK-AEROSIB - trace gas measurements J.-D. Paris, B. D. Belan, M. Yu. Arshinov, P. Nédélec, S. B. Belan, D. Davydov, A. Fofonov, and A. Kozlov https://doi.org/10.5281/zenodo.7642554

Short summary

We measured CH₄ and CO₂ from aircraft over the Russian Arctic. Analyzing our data with the Lagrangian model FLEXPART, we find a sharp east–west gradient in atmospheric composition. Western Siberia is influenced by strong wetland CH₄ emissions, deep CO₂ gradient from biospheric uptake, and long-range transport from Europe and North America. Eastern flights document less variability. Over the Arctic Ocean, we find a small influence from marine CH₄ emissions compatible with reasonable inventories.