Extended Data Fig. 7: Linear relationship between high-latitude and tropical SST.
From: Synchronous tropical and polar temperature evolution in the Eocene
Site 1172 TEX86-based SST (record plotted in Fig. 2) against Site 959 TEX86-based SST. Lines represent Deming regression analysis through proxy data (polar amplification factor, 1.66 ± 0.57). Proxy data are grouped into 1-Myr bins from 34–58 Myr ago, with error bars representing one standard deviation due to binning. Peak PETM and peak MECO SSTs are plotted as separate points, which fall within the uncertainty of the regression line.
