Fig. 3: Relationship between the long-term tropical land carbon-climate feedbacks and the interannual sensitivity of tropical land carbon uptake to climate in CMIP6.
a Long-term sensitivity of tropical land carbon storage to climate change (y variable, γLT) versus interannual sensitivity of tropical land carbon uptake to temperature variations (x variable, γIAV,T). Each symbol represents a single ESM simulation, the grey shade represents the emergent relationship between the y variable and the x variable, the blue shade represents the observational estimate of the x variable, and the green shade represents the resulting emergent constraint on the y-axis variable. The thicknesses represent ± one standard error. b Probability distributions of unconstrained and constrained γLT. (c, d) Same as a and b, but replacing γIAV,T with γIAV,W derived from the period of 1960–2014.
