01628nas a2200193 4500000000100000008004100001100001200042700001400054700001300068700001700081700001200098700001400110245008800124856004200212300002200254490000800276520113600284022001401420 2012 d1 aK Grant1 aE Rohling1 aA Ayalon1 aBronk Ramsey1 aC Satow1 aA Roberts00aRapid coupling between ice volume and polar temperature over the past 150,000 years uhttp://dx.doi.org/10.1038/nature11593 a744\textendash7470 v4913 a

Current global warming necessitates a detailed understanding of the relationships between climate and global ice volume. Highly resolved and continuous sea-level records are essential for quantifying ice-volume changes. However, an unbiased study of the timing of past ice-volume changes, relative to polar climate change, has so far been impossible because available sea-level records either were dated by using orbital tuning or ice-core timescales, or were discontinuous in time. Here we present an independent dating of a continuous, high-resolution sea-level record1, 2 in millennial-scale detail throughout the past 150,000 years. We find that the timing of ice-volume fluctuations agrees well with that of variations in Antarctic climate and especially Greenland climate. Amplitudes of ice-volume fluctuations more closely match Antarctic (rather than Greenland) climate changes. Polar climate and ice-volume changes, and their rates of change, are found to covary within centennial response times. Finally, rates of sea-level rise reached at least 1.2 m per century during all major episodes of ice-volume reduction.

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