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. 2015 Oct 23;6:8562. doi: 10.1038/ncomms9562

Figure 3. Western Pacific Gradient—SEIO SST relationship.

Figure 3

(a) WPG from observations (y axis inverted) compared to detrended WA coral SST, (b) paleo-WPG based on the difference between IWP06 (ref. 26) and Niño3.4 reconstruction28, (c) Niño3.4 instrumental index (blue= La Niña; red= El Niño) and La Niña-like anomalies in the Niño3.4 reconstruction28 superimposed (orange), and (d) 31-year running correlations between detrended WA coral SST and paleo-WPG (red solid line, red stippled 95% confidence interval based on a 1,000-sample Monte Carlo simulation58) and WPG from observations11 (purple solid line, purple stippled 95% confidence interval). Grey shaded areas indicates periods with statistically significant correlations (>95%).