Fig. 1: Annual effects of idealized aerosol emission reductions.
From: Local biophysical climate feedback from vegetation responses to lower aerosol pollution
a Changes in the aerosol optical depth at 550 nm (unitless). b Impacts of aerosol decline on the leaf area index (LAI; unit: m2·m−2). c Baseline temperature sensitivity to LAI (dT/dLAI; unit: °C·m−2·m2) in the historical simulation. d, e Impacts of aerosol decline on dT/dLAI (Δ(dT/dLAI); d), with the impacts categorized into four classes (e): stronger warming (dT/dLAI >0 and Δ(dT/dLAI)>0), weaker warming (dT/dLAI >0 and Δ(dT/dLAI)<0), weaker cooling (dT/dLAI <0 and Δ(dT/dLAI)>0) and stronger cooling (dT/dLAI <0 and Δ(dT/dLAI)<0). f Map of boreal, temperate and tropical regions determined by the Köppen-Geiger climate classification. In (a–e), shading denotes the multimodel mean. In (a, b, d, e), black dots denote where at least four out of the five models agree on the sign of the multimodel mean. In (b–d), imbedded bar plots show regional averages across boreal (blue), temperate (gray), and tropical (orange) vegetated areas, with bars and error bars representing the multimodel mean and intermodel standard deviation, respectively. The results are derived from the comparison between the historical and hist-piNTCF simulations (hist-piNTCF minus historical) over 1985-2014.
