COOKIES Voyage: Antarctic Water Chemistry Profiles

Hydrology data from the RV Investigator's COOKIES voyage provides a quality-controlled snapshot of water column chemistry around the Cook Ice Shelf. Samples collected via CTD rosette deployments between January and February 2026 measure salinity, dissolved oxygen, and key nutrients. This processed dataset is archived by CSIRO's National Collections and Marine Infrastructure.

Use Cases

• Analyzing nutrient gradients (phosphate, silicate, nitrate) with depth to understand biological productivity.
• Correlating dissolved oxygen levels with salinity and temperature profiles to identify water masses.
• Studying ammonium concentrations as an indicator of microbial remineralization processes.
• Validating regional oceanographic models with in-situ CTD-derived water chemistry measurements.

Strengths

• Data is quality-controlled and archived by a national research institution (CSIRO NCMI IDC).
• Covers a specific, recent research voyage with a precise time range (02 Jan 2026 - 25 Feb 2026).

Limitations

• Column names and data structure are not provided in the available metadata.
• Exact row count and file size are unknown, limiting assessment of dataset scale.
• Conflicting 'last updated' dates (2026-06-04 and 2026-04-18) create uncertainty about versioning.

Provenance

Source

Marine National Facility (MNF) RV Investigator voyage IN2026_V01.

Collection Method

Samples collected from Niskin bottles during Conductivity-Temperature-Depth (CTD) deployments.

Time Range

2026-01-02 to 2026-02-25 (AEST)

Freshness

Last updated on 2026-06-04 according to the most recent record.

Geography

Southern Ocean, voyage departed from and returned to Hobart, Tasmania, operating near the Cook Ice Shelf.