Journal Highlights

Calculating surface ocean pCO2 from biogeochemical Argo floats equipped with pH: an uncertainty analysis

Editor's Highlight—This paper presents a dataset on carbon in the Southern Ocean. Surface partial pressure of carbon dioxide (pCO2) is calculated from measurements of pH on 74 biogeochemical profiling floats. Wintertime data in the Southern Ocean is notoriously sparse. These new data reveal significantly higher pCO2, and thus higher CO2 efflux, in some parts of the Southern Ocean. In addition to providing a rare snapshot into wintertime carbon dynamics in this historically under sampled region, this paper lays out methods that are likely to be widely used in future ocean carbon studies.