Delayed build-up of Arctic ice sheets during 400,000-year minima in insolation variability
【摘要】:正Knowledge of the past variability of climate at high northern latitudes during astronomical analogues of the present interglacial may help to inform our understanding of future climate change. Unfortunately,long-term continuous records of ice-sheet variability in the Northern Hemisphere only are scarce because records of benthic ~(18)O content represent an integrated signal of changes in ice volume in both polar regions.However,variations in Northern Hemisphere ice sheets influence the Siberian High(an atmospheric