RV Investigator Voyage IN2025_V03: Underway Ocean and Atmospheric Data

20 days of continuous underway data were collected by the Marine National Facility RV Investigator voyage IN2025_V03 between April 29 and May 18, 2025. The dataset includes navigation, thermosalinograph water properties, and atmospheric measurements, processed and archived by CSIRO NCMI IDC. Data are available at intervals from 5 seconds to 5 minutes in NetCDF and ASCII formats.

Use Cases

• Validate satellite sea surface temperature (SST) measurements based on radiometer/SST data mentioned in the description.
• Study ocean-atmosphere carbon exchange based on pCO2 and atmospheric trace gas measurements.
• Analyze marine navigation and vessel performance based on GPS, speed, heading, and course over ground data.
• Model ocean primary productivity based on fluorescence and photosynthetically active radiation (PAR) measurements.
• Investigate wind patterns and atmospheric conditions off Tasmania based on ultrasonic and vane wind sensor data.

Strengths

• Data collection spans a 20-day voyage from April 29 to May 18, 2025.
• Includes three distinct data streams: navigation, thermosalinograph, and atmospheric measurements.
• Data are available at high-frequency intervals, including 5-second and 1-minute resolutions.
• Quality-controlled data are supplied to the IMOS AODN and the Australian Bureau of Meteorology for validation.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Not all variables are quality controlled; users must check for existing QC flags in the datasets.

Provenance

Source

Marine National Facility (MNF) RV Investigator, processed by CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC).

Collection Method

Continuously recorded underway data from shipboard instruments during voyage IN2025_V03.

Time Range

April 29, 2025 to May 18, 2025 (AEST).

Freshness

Last updated 2026-07-10 00:53:14.917921; freshness should be verified.

Geography

Voyage departed from and returned to Hobart, Tasmania; spatial coverage is the ocean region sampled during the voyage.