Consistently dated records from the Greenland GRIP, GISP2 and NGRIP ice cores for the past 104ka reveal regional millennial-scale δ18O gradients with possible Heinrich event imprint

Inger K. Seierstad, Peter M. Abbott, Matthias Bigler, Thomas Blunier, Anna J. Bourne, Edward Brook, Susanne L. Buchardt, Christo Buizert, Henrik B. Clausen, Eliza Cook, Dorthe Dahl-Jensen, Siwan M. Davies, Myriam Guillevic, Sigfús J. Johnsen, Desirée S. Pedersen, Trevor J. Popp, Sune O. Rasmussen, Jeffrey P. Severinghaus, Anders Svensson, Bo M. Vinther