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. 2019 Mar 18;7(3):283–299. doi: 10.1029/2018EF001064

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©2019. The Authors.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Distributions of excess CH₄ concentration (left), fossil fraction (middle), and change in Δ¹⁴CH₄ (right) in simulations using the Target and BAU scenarios with EDGAR emissions. Bars show the median and interquartile range of each variable at each observation site, similar to Figure 3. In the right panel, the change in Δ¹⁴CH₄ is also shown for a simulation in which the excess CH₄ concentration is determined using the BAU scenario but the fossil fraction is determined using the Target scenario.