Compilation of nitrate isotopes (δ¹⁵N and δ¹⁸O) in the ocean

The compilation combines measurements of nitrate δ¹⁵N (vs Air N₂) and δ¹⁸O (vs VSMOW) from the global ocean together with ancillary hydrographic and biogeochemical measurements when available, including temperature, salinity, dissolved oxygen, nitrate, nitrite, phosphate, silicate, and ammonium concentrations.