Articles | Volume 26, issue 2
https://doi.org/10.5194/acp-26-1229-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-1229-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Methane fluxes from Arctic & boreal North America: comparisons between process-based estimates and atmospheric observations
Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
Misa Ishizawa
Environment and Climate Change Canada, Toronto, ON, Canada
Felix R. Vogel
Environment and Climate Change Canada, Toronto, ON, Canada
Zhen Zhang
Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
Benjamin Poulter
Spark Climate Solutions, San Francisco, CA, USA
Leyang Feng
Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
Anna L. Gagné-Landmann
Department of Physics, Northern Arizona University, Flagstaff, AZ, USA
Deborah N. Huntzinger
School of Earth and Sustainability, Northern Arizona University, Flagstaff, AZ, USA
Joe R. Melton
Environment and Climate Change Canada, Victoria, BC, Canada
Vineet Yadav
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
Dylan C. Gaeta
Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
Ziting Huang
Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
Douglas E. J. Worthy
Environment and Climate Change Canada, Toronto, ON, Canada
Douglas Chan
Environment and Climate Change Canada, Toronto, ON, Canada
Scot M. Miller
Department of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD, USA
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Latest update: 08 Jun 2026
Short summary
We find that the state-of-the-art process-based methane flux models have both lower flux magnitude and reduced inter-model uncertainty compared to a previous model inter-comparison from over a decade ago. Despite these improvements, methane flux estimates from process-based models are still likely too high compared to atmospheric observations. We also find that models with simpler parameterizations often result in better agreement with atmospheric observations in high-latitude North America.
We find that the state-of-the-art process-based methane flux models have both lower flux...
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