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. 2021 Jan 7;8:2. doi: 10.1038/s41597-020-00779-6

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© The Author(s) 2021

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Fig. 8 — Time series of monthly O₂ uptake as estimated by GCP-GridFEDv2019.1 for the period 1990–2018 (Mt O₂ day⁻¹). (Top row, Left column) Total global uptake is disaggregated to the (other columns) top 4 emission regions and (other rows) source classes. The plotted uptake uncertainties are based on CO₂ emissions uncertainties of 5% for Annex I nations and global³, and they do not include uncertainties in oxidative ratios.