IN2024_V03: CTD Oceanographic Data from the SEA-MES Voyage 2

83 CTD deployments collected from the RV Investigator voyage IN2024_V03, which took place between May 01 and May 31, 2024, departing from Hobart and returning to Sydney. The data were acquired using a Sea-Bird SBE911 CTD unit and processed by CSIRO's National Collections and Marine Infrastructure Information and Data Centre. The dataset includes 1-decibar binned averages for primary sensors and auxiliary measurements like dissolved oxygen, chlorophyll-a, and CDOM.

Use Cases

• Analyzing water column structure based on conductivity, temperature, and depth (CTD) profiles.
• Studying dissolved oxygen dynamics and their calibration against bottle samples.
• Investigating phytoplankton biomass using chlorophyll-a and PAR sensor data.
• Examining water clarity and organic matter using scattering and CDOM measurements.

Strengths

• Data from 83 CTD deployments provides detailed vertical profiles of the water column.
• Final conductivity calibration achieved 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

• CTD had minor issues at the beginning of the voyage, and a pump was replaced after cast 10.
• LADCP experienced a battery failure for the first three casts.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

Australian Ocean Data Network, collected by CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC).

Collection Method

Data acquired using a Sea-Bird SBE911 CTD unit #24 (S/N 1354) with a rosette sampler, processed with CSIRO-supplied calibrations and automated QC.

Time Range

May 01, 2024 to May 31, 2024 (AEST).

Freshness

Last updated 2026-06-05 06:57:02.846583; freshness should be verified.

Geography

Southeast Australian marine ecosystem, voyage from Hobart to Sydney.