DatasetConcentrations of dissolved iron and manganese determined in water-column and near-surface seawater samples collected on the US GEOTRACES GP17-OCE cruise on R/V Roger Revelle (RR2214) in the South Pacific and Southern Oceans from Dec 2022 to Jan 2023Sedwick, Peter N; Sohst, Bettina; Sohst, BettinaThese data comprise the concentrations of dissolved iron and manganese determined in water-column and near-surface seawater samples, collected using a trace-metal clean CTD rosette or underway towfish sampler, respectively, during U.S. GEOTRACES cruise GP17-OCE (R/V Roger Revelle cruise RR2214). The dissolved iron data include shipboard measurements made using flow-injection analysis, and post-cruise measurements made using inductively-coupled plasma mass spectrometry, whereas the dissolved manganese data include only post-cruise measurements made using inductively-coupled plasma mass spectrometry.Biological and Chemical Oceanography Data Management Office (BCO-DMO)2025-01-0110672032https://doi.org/10.26008/1912/bco-dmo.986862.12122886GP17-OCEGEOTRACESdissolved Irondissolved manganesetrace elements1National Science Foundation