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. 2020 Apr 20;11:1900. doi: 10.1038/s41467-020-15852-2

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 6 — The impacts of fire decline between 2008–2014 and 2001–2007 are evaluated here. Emissions from Fossil fuel (E_FF) and from land use change (E_LUC), atmospheric CO₂ growth rate (G_ATM), and process-based sink estimates for ocean (S_OCEAN) and land (S_LAND) are derived from GCP 2018 estimates to determine the airborne fraction (each component shown in Supplementary Fig. 10. AF_obs = G_ATM/(E_FF + E_LUC), showing the observed G_ATM relative to the total emissions from E_FF and E_LUC; AF_land+ocean = 1 − (S_OCEAN + S_LAND)/(E_FF + E_LUC), representing the portion of AF variations that can be explained by current process-based estimates of land and ocean sinks; AF_{+BA Decline} = 1 − (S_OCEAN + S_LAND − ΔFIRE − ΔNEE)/(E_FF + E_LUC), representing the adjusted AF by adding for our estimates of BA decline impacts relative to the mean 2001–2007 BA. Note that the adaptations to 2015 are only due to the legacy effect of the period 2008–2014.