Fig. 4
From: Rapid termination of the African Humid Period triggered by northern high-latitude cooling
SiZer map for GeoB4905-4 δDwax. The y-axis represents the range of bandwidths (h) for which the data were smoothed (plotted on a log scale) and the x-axis represents age. Blue regions represent significant decreases in δDwax (wettening), red regions significant increases in δDwax (drying), purple regions no significant change, and grey areas indicate where the sampling resolution is too low. The black horizontal line represents the data-driven Ruppert-Sheather-Wand bandwidth86, the optimal smoothing (global bandwidth) for the entire data set. Time intervals where this line intersects with areas of significant increase or decrease are highlighted with vertical lines. δDwax is adjusted for ice volume and vegetation type
