Figure 2
Forced MMMs: Forced MMM Sahel precipitation anomalies (colored lines; right, colored ordinates) and their yearly 95% confidence intervals from bootstrapping (colored shaded areas; right, colored ordinates) over observed Sahel precipitation anomalies (black lines; left, black ordinates) and the 95% confidence interval of the piC runs from randomized bootstrapping (yellow shaded areas; right, colored ordinates). N are the number of research institutions which performed each forcing experiment. Panel (c) additionally identifies the dates of large volcanic eruptions which had different effects on the aerosol optical depth in the northern and the southern hemispheres, as well as the sign of that difference17.
