References

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References

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Figure 1: Map of the North Atlantic including topographic features [ Schmitz and McCartney, 1993], DWBC pathway added.

Figure 2a: Model time histories of the annual tritium delivery from different sources for the North Atlantic [ Doney et al., 1993].

Figure 2b: Histories of F11, F12, CCl and CHCCl (pmol/kg) in cold surface water (Northern Hemisphere), and CCl/F11 and F11/F12 ratios as a function of time [ Wallace et al., 1992].

Figure 2c: History of F113 (pmol/kg) in seawater in equilibrium with the atmosphere at several temperatures and salinity of 35 psu (Northern Hemisphere), and F113/F11 ratio as a function of time [Smethie, 1994].

Figure 3a: Section of F11 (pmol/kg) versus distance from the boundary at Abaco (26.5N) in 1992 [ Abell et al., 1994].

Figure 3b: Section of F11 (pmol/kg) versus distance from the boundary at 55W in 1983 [ Smethie, 1993].

Figure 4: Composite DWBC sections of tritium, excess He and tritium/He age. Horizontal axis is distance, vertical axis is potential density referenced to 3000 m (sigma-3) [ Doney and Jenkins, 1994].