① Two-dimensional histograms and regression lines between CO2, CH4, and CO. (IMAGE)

National Institute for Environmental Studies

① Two-dimensional histograms and regression lines between CO2, CH4, and CO.

Caption

  • Two-dimensional histograms and regression lines for (a, d) ∆CO vs. ∆CO2, (b, e) ∆CO vs. ∆CH4, and (c, f) ∆CH4 vs. ∆CO2 in Beijing (upper) and Tokyo (lower). α is the slope of the regression line ± its uncertainty, and r is the correlation coefficient. A steeper slope indicates that emissions of the gas plotted on the vertical axis are relatively higher than emissions of the gas plotted on the horizontal axis.

Credit

National Institute for Environmental Studie

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