Tropical ice cores offer deeper insights into Earth’s temperature record
Global vapor δ18Ov and temperature relation during deglaciation.Zonal mean of (A) temporal correlation (after 500-year running mean) between the δ18Ov (‰) and the temperature (°C) at the same location (longitude, latitude, and altitude) and (B) dδ18Ov/dT regression slope (‰/°C) from 21 to 11 ka in iTRACE (shading). Zonal mean climatology temperatures at the PI are also plotted in each panel (black contours). The annual freezing level (0°C) is plotted in…