Ice core data - Ice Ages and Interglacials: Measurements, Interpretation, and Models - page 146

Figure 4.15. Comparison of Greenland and Antarctica isotope records. Dashed lines indicate
the onset of selected major sudden heating (Dansgaard-Oeschger) events in the NH (Blunier et
al. 1998).
Figure 4.16. Isotopic and CH 4 data from Greenland and Antarctica on the GISP2 time scale
(Blunier and Brook, 2001).