A phytol εp-based core-top calibration to reconstruct past changes in atmospheric CO2

We investigated the relationship between photosynthetic fractionation (εp, calculated from the carbon isotopic composition of phytol (δ13C)) and dissolved CO2 concentrations (CO2 (aq)) using a globally distributed set of core top sediment and suspended particulate matter samples. The dataset here includes site locations, oceanographic variables, carbonate system parameters, δ13C, εp and CO2 (aq).