Fig. 11.

Gridded (0.1° × 0.1°) estimates of relative uncertainty in total CO₂ emissions for four years of the GCP-GridFEDv2019.1 time series. Uncertainty in total emissions is aggregated from the sector-level estimates (see Table 2). The uncertainty estimates account for uncertainty across national emission reports and spatial differences in the sectoral breakdown to total emissions in each grid cell, which changes throughout the time series, however they exclude uncertainties associated with the spatial or temporal (monthly) disaggregation of national emissions (see ‘CO₂ emissions uncertainty’). Aggregation of uncertainties to a coarser resolution should account for the non-independence of gridded emissions uncertainties.