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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. 4 — Time series of monthly CO₂ emissions as estimated by GCP-GridFEDv2019.1. for the period 1990–2018 (Mt CO₂ day⁻¹). Uncertainties in CO₂ emissions are treated as 5% for Annex I nations and global, following the GCB uncertainty assessment³. (Top row, Left column) Total global emissions are disaggregated to the (other columns) top 4 emission regions and (other rows) source classes.