Extended Data Fig. 1: pCO2 from this study’s western equatorial Pacific (WEP) pH values match previous δ11B-derived studies.
From: Pliocene decoupling of equatorial Pacific temperature and pH gradients
a, b, pCO2 estimates (blue markers and shaded areas showing 68% and 95% confidence intervals) from this study’s pH data from the WEP, a region in equilibrium with the atmosphere37, assuming a modern-like alkalinity of 2,275 ± 200 μmol kg−1 (a) versus a modern-like calcite saturation state (Ω = 5 ± 2 (error bars), Ω = 4 (lower black squares) and Ω = 6 (upper black squares); b). Grey data points show δ11B-deried estimates of pCO2 from previously published studies, with shading showing reported confidence intervals51,84,111,112,113,114,115.
