Articles | Volume 18, issue 24
Atmos. Chem. Phys., 18, 17895–17907, 2018
https://doi.org/10.5194/acp-18-17895-2018

Special issue: Greenhouse gAs Uk and Global Emissions (GAUGE) project (ACP/AMT...

Atmos. Chem. Phys., 18, 17895–17907, 2018
https://doi.org/10.5194/acp-18-17895-2018

Research article 17 Dec 2018

Research article | 17 Dec 2018

Detecting changes in Arctic methane emissions: limitations of the inter-polar difference of atmospheric mole fractions

Oscar B. Dimdore-Miles et al.

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Latest update: 23 Sep 2021
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Short summary
The Arctic is experiencing warming trends higher than the global mean. Arctic ecosystems are a large store of carbon. As the soil organic carbon thaws and decomposes, some fraction of this store will eventually be released to the atmosphere as methane. We show that a previously used measurement-based metric to identify changes in Arctic methane emissions does not reliably quantify these changes because it neglects the effect of atmospheric transport. A better metric will combine data and models.
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