English: NGRIP late Glacial calcium ion data. This time spans to Bölling via Alleröd to Younger dryas.
Original data source is file
"Calcium concentration and d18O isotope ratios from the Greenland NGRIP, GRIP, and GISP2 ice cores on the GICC05 time scale."
"Synchronization of the NGRIP, GRIP, and GISP2 ice cores across MIS 2 and palaeoclimatic implications S.O. Rasmussen, I.K. Seierstad, K.K. Andersen, M. Bigler, D. Dahl-Jensen, and S.J. Johnsen
Quaternary Science Reviews, vol. 27, p. 18-28, 2008"
The data was processed then with Calc and Gedit, and plotted with gnuplot.
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