Comparing the isotopic and molecular composition of dissolved organic carbon between the oligotrophic South China Sea and the north Pacific Ocean: signals of biodegradation, conservative mixing, and terrestrial input

This data set contains: 1)the sampling information and DOC concentrations of the samples; 2) statistics of DOC concentrations, SPE-DOC concentrations, SPE-DOC Δ14C values, SPE-DOC δ13C values, and carbon extraction efficiencies determined for samples from stations F2 and DC6; 3)Molecular characteristics of DOM throughout two water columns at stations F2 and DC6, including the relative abundance of different compound groups and intensity-weighted indices.