South Atlantic Ventilation Experiment (SAVE) - Radiocarbon

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Two campaigns to measure transient tracers in the Atlantic Ocean (TTO/NAS and TTO/Equatorial) were funded by NSF during the period from 1980 to 1985. A complete data base for modelling this ocean basin would include a South Atlantic Study to: 1.Determine CO2 transports and their influence on world climate, 2.Constrain models of major ocean currents in this area, and 3.Confirm an observed 5-fold increase in the addition rate of new carbon to the thermocline. Eight components of such a study (SAVE) will be performed by investigators from LDGO, Princeton, University of Washington, WHOI, and SIO. The track record of these scientists is well established by successful completion of previous studies in the Equatorial and North Atlantic. They will provide physical and chemical expertise which will be directed toward a cooperative effort to reach the goals of the geochemical study. This component is aimed at tracing water mass movement in the South Atlantic using radiocarbon (C-14). About 1000 tracer samples will be collected by LDGO and analyzed under the direction of Drs. Ostlund and Tap at the University of Miami; Dr. Broecker at Columbia University will interpret the data. Both principle investigators have developed a valuable understanding of water movement through C-14 studies around the world and are well qualified to perform this task in the SAVE project.