Stable carbon isotopic signatures of solid-phase extracted DOC from seawater collected on three GO-SHIP Repeat Hydrography Cruises in 2015-2018 along transects P16N, P18, and I07N.

These data include stable carbon isotopic measurements (d13C) of solid-phase extracted dissolved organic matter (SPE-DOC) from three GO-SHIP Repeat Hydrography Cruises transects P16N (151°W; 2015), P18 (103-110°W; 2016/2017), and I07N (50-70°E; 2018) aboard the NOAA Ship Ronald H. Brown. The "weighted average depth" refers to that of seawater integrated between 0-200m and 2-4km depth.

These data are used to compare carbon isotopic compositions of recalcitrant DOC to bulk DOC, yielding new insights toward the importance of the microbial carbon pump toward the sequestration of DOC in the global deep-ocean. This data accompanies an article currently in review at Geophysical Research Letters.