This data set was acquired with a Sea-Bird Electronics SBE-911+ CTD during R/V Nathaniel B. Palmer expedition NBP1802 conducted in 2018 (Chief Scientist: Dr. Alison Macdonald, Investigator: Dr. Alison Macdonald). These data files are of Sea-Bird CTD format and include Conductivity, Pressure and Temperature data that were processed after acquisition. Data were acquired as part of the project(s): Collaborative Research: Global Ocean Repeat Hydrography, Carbon, and Tracer Measurements, 2015-2020. Funding was provided by NSF award(s): OCE14-37015.