RV Investigator Voyage IN2026_V01: CTD Data from Antarctic COOKIES Expedition

The Cook Ice Ecosystems and Sediments (COOKIES) voyage in the Southern Ocean collected data from 37 CTD deployments between January 02 and February 25, 2026. The Sea-Bird SBE911 CTD unit measured conductivity, temperature, depth, dissolved oxygen, and auxiliary parameters like PAR and Chlorophyll-A. Data were processed and archived by CSIRO's National Collections and Marine Infrastructure Information and Data Centre.

Use Cases

• Analyzing water column structure based on conductivity, temperature, and depth profiles.
• Studying biogeochemical cycles based on dissolved oxygen, Chlorophyll-A, and CDOM measurements.
• Investigating benthic-pelagic coupling based on seafloor observations from the attached camera.
• Calibrating sensor performance based on the reported standard deviation of 0.00128 PSU for conductivity.

Strengths

• Data from 37 distinct CTD deployments provides spatial and temporal coverage.
• Calibration quality is documented, with a final conductivity standard deviation of 0.00128 PSU, meeting the target of 'better than 0.002 PSU'.
• Multiple sensor types were deployed, including primary CTD, dissolved oxygen, PAR, CDOM, transmissometer, Chlorophyll-A, and Backscatter sensors.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Some casts experienced sensor blockages or were 'yoyo casts' without bottle samples, as noted in the cast summary.

Provenance

Source

Australian Ocean Data Network, collected by CSIRO on RV Investigator voyage IN2026_V01.

Collection Method

Acquired using a Sea-Bird SBE911 CTD unit with a rosette sampler, processed with CSIRO-supplied calibrations and automated QC.

Time Range

January 02, 2026 to February 25, 2026 (AEST).

Freshness

Last updated 2026-06 27 18:58:34.890651; freshness should be verified.

Geography

Southern Ocean, voyage departing from and returning to Hobart, Tasmania.