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A maximum-entropy inversion technique was applied to CFC and SF6 measurements made on the U.S. GEOTRACES North Atlantic Transect, and radiocarbon concentrations interpolated to sample locations along the transact from gridded data reported in the GLODAP data compilation, to determine mean ages and source water compositions of each water sample. Details are described in Holzer et al. (2018).
\nSee the attached README file (GA03_transit-time_partitioned_water-mass_fractions_v2_README.pdf) for more information on methods and a\u00a0map of region locations.
Water mass fractions and ages calculated from hydrographic and tracer data using a maximum-entropy inversion technique.
\nThis dataset contains the fraction of water last ventilated in a given region in a time less than or equal to 39 years ago as well as the corresponding ensemble standard deviations.
\nData File Formats:
\nFor a .csv or .tsv format of these data, use the \"Get Data\" button at the top of the BCO-DMO metadata page.\u00a0
\nFor a Matlab file containing all of the water mass fraction data from this project, see the \"Data Files\" section of the BCO-DMO metadata page.