North Atlantic Deep Water radiocarbon

Broecker, W. S. (1979). A revised estimate for the radiocarbon age of North Atlantic deep water. J. Geophys Res. 84, 3218-3226. 

Radiocarbon reconstructions for the deep North Atlantic show older ventilation ages than today (Broecker et al., 1990 Keigwin and Schlegel, 2002), but still younger than waters in the South Atlantic (Goldstein et al., 2001), suggesting that while this deep water was ventilated from the North during the LGM, it... 

Figure 5 Typical meridional sections for each ocean compiled from a subset of the data used for Figure 4. The deep water contour patterns are primarily due to the large-scale thermohaline circulation. The highest deep water A C values are found in the North Atlantic and the lowest in the North Pacific. The natural A C in the upper ocean is contaminated by the influx of bomb-produced radiocarbon.

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