This data set was acquired with a Sea-Bird Electronics SBE-911+ CTD during R/V Nathaniel B. Palmer expedition NBP1704 conducted in 2017 (Chief Scientist: Dr. Stephen Ackley, Investigator: Dr. Stephen Ackley). These data files are of Sea-Bird CTD format and include Conductivity, Pressure and Temperature data that were processed after acquisition. Funding was provided by NSF award(s): OPP13-41717, OPP15-43483.