©2026 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2026 Biological and Chemical Oceanography Data Management Office.This dataset comprises the sensor data from conventional CTD rosette ("ODF rosette") deployments in the Amundsen Sea and adjacent Southern Ocean during US GEOTRACES cruise GP17-ANT (RVIB Nathaniel B. Palmer cruise NBP24-01) in December 2023 and January 2024. The clean, processed sensor data from the ODF rosette downcasts are averaged (binned) over 2-decibar pressure intervals. The averaged data include sensor-based measurements of temperature, salinity, dissolved oxygen concentration, beam trans...
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Water-column sensor data were collected during downcast deployments of a conventional CTD rosette ("ODF rosette") system. The ODF rosette casts were performed using a 36-bottle rosette frame, a 36-place carousel and 36 x 10.6 liter (L) Bullister-style Niskin sampler bottles. The system included a SeaBird Electronics (SBE) housing unit with pressure sensor, temperature sensors, conductivity sensors and membrane oxygen sensor, as well as a transmissometer, chlorophyll-a fluorometer, altimeter and turbidity sensor. The package was deployed on a conducting steel hydrowire using the winch in the Baltic Room of RVIB Nathaniel B. Palmer. Further details are provided in the GP17-ANT cruise report (Sedwick et al., 2024) and in the ODF cruise report (Scripps Institution of Oceanography Ocean Data Facility team, 2024).
Instrumentation Details:
The ODF rosette casts were performed with a package consisting of a 36-bottle rosette frame and carousel, and 36 (plus spares) x 10.6 L Bullister-style Niskin bottles. Underwater electronic components consisted of an SBE-9plus housing unit with Digiquartz pressure sensor, dual SBE-3plus temperature sensors and SBE-4C conductivity sensors, an SBE-43 membrane oxygen sensor, SBE-35 reference thermometer, JFE-Advantech RINKO oxygen optode, WetLabs C-Star transmissometer, ECO-FL-RTD chlorophyll-a fluorometer, Valeport VA500 altimeter, and SeaPoint turbidity sensor.
The CTD pressure, temperature, conductivity, and oxygen sensors were calibrated prior to the cruise, whereas the transmissometer was calibrated before the start and after the end of science operations. The CTD data acquisition system consisted of an SBE-11plus (V1) deck unit and a networked generic PC workstation running Windows 10. SBE SeaSave7 v.7.26.7.121 software was used for data acquisition and to close bottles on the rosette. Further details are provided in the ODF cruise report (Scripps Institution of Oceanography Ocean Data Facility team, 2024).
Note: Cruise reports are attached as Supplemental Files and available at https://usgeotraces.ldeo.columbia.edu/content/gp17-ant.
Sedwick, P. N., Lam, P. J., Sherrell, R. M., Anderson, R. F., Giulivi, C. (2026). Sensor data from the conventional (ODF) CTD rosette on the US GEOTRACES GP17-ANT cruise in the Amundsen Sea on RVIB Nathaniel B. Palmer (NBP2401) from November 2023 to January 2024. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-10-16 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/1009934 [access date]
Terms of Use
This dataset is licensed under Creative Commons Attribution 4.0.
If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.