Figure 4: Comparison of palaeoclimatic records from core MD07-3088 and EPICA DOME C. | Nature Communications

Figure 4: Comparison of palaeoclimatic records from core MD07-3088 and EPICA DOME C.

From: Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation

Figure 4

(a) Variations in δ18O (per mil versus PDB) of G. bulloides versus time. The thick red line corresponds to a smoothed curve using a three-point average. (b) Summer SST (°C) using the Modern Analogue Technique. (c) Ti/K ratio sedimentary record in core MD07-3088. (d) Ice-core deuterium (δD) record from EDC35 based on the age scale of Lemieux-Dudon et al.36 Note that the calendar age scale of the marine records (a-c) was determined in this study from marine radiocarbon data and is independent of the calendar age scale for the ice-core record (d). Vertical grey dashed lines indicate approximate timing of Southern Hemisphere climatic events. LGM=Last Glacial Maximum, LGIT=Last Glacial–Interglacial transition; ACR=Antarctic Cold Reversal.

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