Articles | Volume 22, issue 19
https://doi.org/10.5194/bg-22-5193-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-22-5193-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Environmental drivers constraining the seasonal variability in satellite-observed and modelled methane at northern high latitudes
Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
Maria Tenkanen
Climate Research, Finnish Meteorological Institute, Helsinki, Finland
Tuula Aalto
Climate Research, Finnish Meteorological Institute, Helsinki, Finland
Michael Buchwitz
Institute of Environmental Physics (IUP), University of Bremen, Bremen, Germany
Kari Luojus
Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
Jouni Pulliainen
Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
Kimmo Rautiainen
Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
Oliver Schneising
Institute of Environmental Physics (IUP), University of Bremen, Bremen, Germany
Anu-Maija Sundström
Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
Johanna Tamminen
Space and Earth Observation Centre, Finnish Meteorological Institute, Helsinki, Finland
Aki Tsuruta
Climate Research, Finnish Meteorological Institute, Helsinki, Finland
Hannakaisa Lindqvist
Space and Earth Observation Centre, Finnish Meteorological Institute, Sodankylä, Finland
Data sets
ERA5 hourly data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.adbb2d47
Short summary
We study how environmental variables influencing natural methane fluxes explain the seasonal variability in satellite-observed methane in Northern Hemisphere high-latitude wetland areas. Using two atmospheric model set-ups, we assess consistency with satellite data. Methane loss through reaction with hydroxyl radicals and links with snow cover, temperature, and snowmelt had the strongest influence. Our study highlights the value of satellite observations for understanding large-scale wetland emissions.
We study how environmental variables influencing natural methane fluxes explain the seasonal...
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