Extended Data Fig. 2: Evolution of the isotopic composition (a: δD vs δ18O, b: ln(1 + δD) vs ln(1 + δ18O), c: d-excess vs δ18O, d: dln vs ln(1 + δ18O)) for the three deep ice cores of the East Antarctic plateau (red – EDC; blue – Dome F; orange – Vostok). | Nature Geoscience

Extended Data Fig. 2: Evolution of the isotopic composition (a: δD vs δ18O, b: ln(1 + δD) vs ln(1 + δ18O), c: d-excess vs δ18O, d: dln vs ln(1 + δ18O)) for the three deep ice cores of the East Antarctic plateau (red – EDC; blue – Dome F; orange – Vostok).

From: Interglacial Antarctic–Southern Ocean climate decoupling due to moisture source area shifts

Extended Data Fig. 2

The black line on panel a represents the Global Meteoric Water Line, a linear relationship between δD and δ18O with a slope of 8 (and intercept of 10 ‰). The black line on panel b represents the ln regression determined from surface snow samples by Uemura et al. (2012)1. The solid lines on panel c represent the evolution of d-excess vs δ18O after a running mean over a 2‰ wide window on the δ18O scale, and the dashed lines represent the average d-excess value.

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