Abstract

The 1981 TTO North Atlantic experiment cruise consisted of seven legs and visited 250 hydrographic stations across the North Atlantic Ocean in 200 days. About 9000 water samples were taken for analysis of salinity, oxygen, and nutrients. More than 3000 samples were collected for tritium analysis, and more than 1000 samples for radiocarbon analysis. Samples were characterized hydrographically (e.g., sample depth, ocean depth, and water temperature) and chemically (e.g., alkalinity, salinity, silicate concentrations, and nitrate concentrations). They may be used for ocean-mixing studies, for testing models of ocean CO₂ uptake, and for determining the exchange of carbon dioxide between the atmosphere and the ocean. The data are in two files [ origional TTO data (0.67 MB) and revised TTO data (0.86 MB)].

Institutions participating in the TTO North Atlantic Experiment include: Lamont-Doherty Geological Observatory, Columbia University, Princeton University, Scripps Institution of Oceanography, University of California, Rosenstiel School of Marine and Atmospheric Science, University of Miami, and Woods Hole Oceanographic Institution.
The TTO North Atlantic Experiment was sponsored by the National Science Foundation and the U.S. Department of Energy.

Reference

• Brewer, P.G., T. Takahashi, and R.T. Williams. 1986. Transient Tracers in the Oceans (TTO) - Hydrolographic data and carbon dioxide systems with revised carbon chemistry data. NDP-004/R1, Carbon Dioxide Information Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee. doi: 10.3334/CDIAC/otg.ndp004