Projecting the Risk of Future Climate Regime Shifts

Figure 2

figure 2 Fig. 2 Upper panel: Smoothed annual tree ring reconstruction of the Atlantic multidecadal oscillation (AMO) index by Gray et al. (2004). Lower panels: Smoothed resampled versions of the Gray et al. [17] index using randomization in the frequency domain [19]. Numeric annotations are the intervals (years) between zero crossings.