Figure 5
Band-pass filtering at periods of the Atlantic Multidecadal Oscillation.
Comparison of the 50–70 yr band-pass filtering results of the standardized PTP record of this study (black) with a proxy-based North Atlantic SST reconstruction23 (red) for the past 500 yrs. The inset shows a lagged correlation curve. The highest correlation between the two series is achieved when the filtered PTP record is shifted by 20 years (dashed gray line).
