This record describes the End of Voyage (EOV) data archive from the Marine National Facility (MNF) RV Investigator voyage IN2025_V04, titled "Untangling the causes of change over 25 years in the southeast marine ecosystem - Voyage IV." The voyage took place between May 27, 2025 and June 28, 2025 (AEST), departing from Hobart and returning to Hobart.
For further information please refer to the voyage documentation links.
Instruments used and data collected include:
Regular measurements:
Lowered ADCP (LADCP), Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Greenhouse Gas Analysers (Picarro), Cloud Condensation Nuclei counter (CCN), Mobility particle size spectrometer (MPSS), Disdrometer, Radon sensor, CTD, Hydrochemistry, pCO2, Fisheries Echosounder (EK80), Multibeam Echosounder (EM712, EM124), Sub-bottom Profiler (SBP29), Condensation Particle Counters (CPC), GPS Positioning System, Doppler Velocity Log, Infrared Sea Surface Temperature Autonomous Radiometer (ISAR), ITI Trawl Net, Atmospheric Temperature, Humidity, Pressure, Wind and Rain sensors, Photosynthetically Active Radiation (PAR) sensor, Precision Infrared Radiometer (PIR), Precision Spectral Pyranometer (PSP), Starboard and Portside Radiometers, Ozone Sensor, Thermosalinographs (TSG), Fluorometer, Oxygen Optode, Submersible Ultraviolet Nitrate Analyser (SUNA), Gravimeter, Ultra Short BaseLine Underwater Positioning System (USBL), Weather Radar.
Voyage-specific measurements:
Black Carbon sensor (Aethalometer), Deep Towed Camera (DTC), Multiple Plankton Sampler (HydroBIOS Multinet), Micro Rain Radar (MRR), Wildlife Observations (seabirds, cetaceans and seals).
The archive for the IN2025_V04 EOV raw data is curated by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (https://data.csiro.au/), providing access to voyage participants and processors of the data collected on the voyage.
All voyage documentation is available electronically to MNF support via the local network. Applications to access voyage documentation by non-CSIRO participants can be made via data-requests-hf@csiro.au All processed data from this voyage are made publicly available through the MNF Data Trawler (in the related links)