IN2024_V03: CTD Oceanographic Data from Southeast Marine Ecosystem Voyage

CSIRO National Collections and Marine Infrastructure processed CTD data from 83 deployments during the RV Investigator voyage IN2024_V03 in May 2024. The data, collected between Hobart and Sydney, includes measurements from primary sensors for conductivity, temperature, depth, dissolved oxygen, and auxiliary sensors for chlorophyll-a and other parameters. Automated quality control was applied, and final calibrations met specified precision targets.

Use Cases

• Modeling water column structure based on conductivity, temperature, and depth (CTD) profiles.
• Analyzing dissolved oxygen dynamics for biogeochemical studies.
• Studying phytoplankton biomass distribution using chlorophyll-a and PAR sensor data.
• Investigating optical water properties based on CDOM and scattering measurements.

Strengths

• Data from 83 CTD deployments provides spatial and temporal coverage for the voyage.
• Final conductivity calibration had a standard deviation of 0.0018351 PSU, meeting a target of better than 0.002 PSU.
• Dissolved oxygen calibration fit had a standard deviation of 0.83297 μM, with good agreement reported between CTD and bottle data.
• Includes auxiliary sensor data for altimeter, PAR, CDOM, chlorophyll-a, and scattering.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• CTD had minor issues at the beginning of the voyage, and an LADCP battery failure occurred for the first three casts.

Provenance

Source

CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC)

Collection Method

Data acquired using a Sea-Bird SBE911 CTD unit with a rosette sampler during a research voyage.

Time Range

May 01, 2024 to May 31, 2024

Freshness

Last updated 2026-05-02 10:10:59.745799; freshness should be verified.

Geography

Marine region between Hobart and Sydney, southeast Australia