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Figure 1: Measured concentrations from the EPICA Dome C ice core (2006)

Wolff, Eric William ; Fischer, Hubertus ; Ruth, Urs ; [et al.]

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Publication Date: 2023-10-19

Keywords: Calcium; Continuous flow analysis, Ion chromatography; DEPTH, ice/snow; Dome C; Dome C, Antarctica; EDC; EPICA; EPICA Dome C; European Project for Ice Coring in Antarctica; ICEDRILL; Ice drill; Ion chromatography; Sodium; Sulfate

Type: Dataset

Format: text/tab-separated-values, 4205 data points

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(Data D1) Annual climate proxy data from the NGRIP ice core, Greenland (2008)

Steffensen, Jørgen Peder ; Andersen, Katrine K ; Bigler, Matthias ; [et al.]

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In: Supplement to: 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 (2008): High-resolution Greenland ice core data show abrupt climate change happens in few years. Science, 321(5889), 680-684, https://doi.org/10.1126/science.1157707

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Publication Date: 2024-03-18

Description: 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.

Keywords: AGE; Age, error; Annual layer thickness; Deuterium excess; Dust particles; Greenland; ICEDRILL; Ice drill; International Polar Year (2007-2008); ipy; IPY; NGRIP; North Greenland Ice Core Project; NorthGRIP; Parameter; Sampling/drilling ice; δ18O, water

Type: Dataset

Format: text/tab-separated-values, 7608 data points

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