Constraints on ocean heat uptake from the atmospheric argon-nitrogen ratio
Benjamin Birner, Scripps Institution of Oceanography, La Jolla, CA, United States, Jeffrey P Severinghaus, Scripps Institution of Oceanography, La Jolla, United States, Laure Resplandy, Princeton University, Princeton, NJ, United States and Ralph F Keeling, Univ California San Diego, La Jolla, CA, United States