Fig. 1: Correlation between proximity and CO2 emissions within cities. | npj Sustainable Mobility and Transport

Fig. 1: Correlation between proximity and CO2 emissions within cities.

From: Proximity-based cities emit less mobility-driven CO2

Fig. 1

a, b show, for Tokyo and Madrid, the relationship between population-weighted proximity time s and per capita CO2 emissions from road transport (Cpc) in 2021. Each dot represents a 0.1° × 0. 1° grid cell; maps on the right display the same grid coloured by proximity time and emissions. Orange lines are power-law fits (Eq. (2)). c shows the distribution (H1) of correlation coefficients between \(\log {C}_{pc}\) and \(\log s\) across all cities, compared to a population-controlled randomisation (H0, grey). d shows the distribution of power-law exponents γ, with the mean (solid) and 68% confidence interval (dashed).

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