Fig. 3.

Comparison of NH ice-sheet extent during the last glacial cycle and MIS 6. a shows a comparison of the reconstructed ice-sheet extent during the LGM and MIS 4. The orange fill shows areas that were covered by ice sheets during both the LGM and MIS 4. b shows a comparison of the reconstructed geographical maximum ice-sheet extent during the last glacial cycle (MIS 2–5d) and MIS 6. The purple fill shows areas that were covered by ice sheets during both the last glacial cycle (LGC) and MIS 6. Background is ETOPO1 1 arc-minute global relief model of the Earth’s surface⁷²