Extended Data Figure 3 : Comparison of high-latitude GPP (60° N–90° N) versus annual mean CO2.

From: Projected land photosynthesis constrained by changes in the seasonal cycle of atmospheric CO2

Extended Data Figure 3

a, The correlation for both the historical (asterisks) and the 1%BGC (circles) CMIP5 model simulations. The markers show the values for the individual years and lines show the linear best fit for each model. b, The comparison of the gradients in a for each model. The red solid line shows the gradient of the correlation and the black dashed line indicates a 1:1 correlation.