(Data D1) Annual climate proxy data from the NGRIP ice core, Greenland

• Main Authors: Steffensen, Jørgen Peder, Andersen, Katrine K, Bigler, Matthias, Clausen, Henrik Brink, Dahl-Jensen, Dorthe, Fischer, Hubertus, Goto-Azuma, Kumiko, Hansson, Margareta E, Johnsen, Sigfús Jóhann, Jouzel, Jean, Masson-Delmotte, Valerie, Popp, Trevor, Rasmussen, Sune Olander, Röthlisberger, Regine, Ruth, Urs, Stauffer, Bernhard, Siggaard-Andersen, Marie-Louise, Sveinbjörnsdottir, Árný E, Svensson, Anders M, White, James W C
• Format: Dataset
• Language: English
• Published: PANGAEA 2008
• Subjects: AGE; error; Annual layer thickness; Deuterium excess; Dust particles; Greenland; ICEDRILL; Ice drill; International Polar Year (2007-2008); ipy; NGRIP; North Greenland Ice Core Project; NorthGRIP; Parameter; Sampling/drilling ice; δ18O; water; Greenland ice core; Greenland Ice core Project; ice core; International Polar Year; IPY; North Greenland
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.786474; https://doi.org/10.1594/PANGAEA.786474

The last two abrupt warmings at the onset of our present warm interglacial period, interrupted by the Younger Dryas cooling event, were investigated at high temporal resolution from the North Greenland Ice Core Project ice core. The deuterium excess, a proxy of Greenland precipitation moisture source, switched mode within 1 to 3 years over these transitions and initiated a more gradual change (over 50 years) of the Greenland air temperature, as recorded by stable water isotopes. The onsets of both abrupt Greenland warmings were slightly preceded by decreasing Greenland dust deposition, reflecting the wetting of Asian deserts. A northern shift of the Intertropical Convergence Zone could be the trigger of these abrupt shifts of Northern Hemisphere atmospheric circulation, resulting in changes of 2 to 4 kelvin in Greenland moisture source temperature from one year to the next.