This record describes the CTD data collected on Investigator voyage IN2023_V07, titled: "SWOT-ACC: smaller scales of the Antarctic Circumpolar Current in a meander south of Tasmania." The voyage took place between November 15, 2023 and December 20, 2023 (AEST), departing from Hobart and returning to Hobart. The primary focus of this voyage was to enhance our ability to observe and comprehend the effects of small-scale motions (ranging from 10 to 100 km) on the dynamics of the Antarctic Circumpolar Current (ACC). The groundbreaking Surface Water Ocean Topography (SWOT) satellite mission will provide unprecedented measurements of sea surface height over a wide area with substantially improved spatial resolution compared to traditional altimeters. While SWOT will offer unparalleled coverage in both space and time, it is crucial to obtain in situ subsurface ocean measurements to validate the satellite observations and establish the connection between small-scale variability in sea surface height and subsurface ocean circulation and dynamics. Data for 111 CTD deployments were acquired using the Sea-Bird SBE9+V2 CTD unit #24 (S/N 1332), fitted with 36 twelve-litre bottles on the rosette sampler. Sea-Bird-supplied calibration factors were used to compute the pressures and preliminary conductivity values. CSIRO-supplied calibrations were applied to the temperature data. The data were subjected to automated QC to remove spikes and out-of-range values. The final conductivity calibration was based on a single deployment grouping. The final calibration from the primary sensor had a standard deviation (SD) of 0.0012454 PSU, within our target of ‘better than 0.002 PSU’. The standard product of 1-decibar binned averages were produced using data from the primary sensors. The dissolved oxygen data (primary) calibration fit had a SD of 0.78388 μM. The agreement between the CTD and bottle data was good. Additional sensors include: SUNA Nitrate, Altimeter (Tritech PA500), Transmissometer (Wetlabs CStar), CDOM, Chlorophyll-a, Scattering (Wetlabs ECO FLCDRTD) were installed on the auxiliary A/D channels of the CTD. The collected data were processed (quality-controlled), and subsequently archived by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC). Additional information regarding this dataset may be contained in the Voyage Summary and the Data Processing Report.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage IN2018_V05, titled "How does a standing meander southeast of Tasmania brake the Antarctic Circumpolar Current?" The voyage took place from Hobart (TAS) to Hobart between October 16 and November 16, 2018. For further information refer to the Voyage documentation links below. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Lowered ADCP (LADCP), Fisheries echosounder (EK60), Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), Gravimeter, GPS Positioning System, Doppler Velocity Log, Met station (temp, humidity, pressure, wind, rain, PIR, PSP, PAR), Nephelometer, pCO2, Starboard and Portside Radiometers, Radon and Ozone sensors, Weather Radar, Greenhouse Gas Analysers (Picarro), Air Pressure, Wind Speed and Direction sensors, Photosynthetically Active Radiation (PAR) sensor, Precision Infrared Radiometer (PIR), Precision Spectral Pyranometer (PSP), Infrared Sea Surface Temperature Autonomous Radiometer (ISAR), Seawater (TSG, fluorometer, optode), Thermosalinographs (TSG), CTD, Hydrochemistry. Voyage-specific measurements: Condensation Particle Counters (CPC), Cloud Condensation Nuclei counter (CCN), Fluorescence Induction and Relaxation System (FIRe), Multiangle Absorption Photometer (MAAP), Triaxus, ECO Triplet, Laser Optical Particle Counter (LOPC), Submersible Ultraviolet Nitrate Analyser (SUNA). The archive for the IN2018_V05 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage in2018_v03, titled "Integrated Marine Observing System: monitoring of East Australian Current property transports at 27oS." The voyage took place from Brisbane (QLD) to Brisbane between April 19 and May 10, 2018. For further information refer to the Voyage documentation links below. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Lowered ADCP (LADCP), Disdrometer, Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), Gravimeter, GPS Positioning System, Doppler Velocity Log, Met station (temp, humidity, pressure, wind, rain, PIR, PSP, PAR), Nephelometer, pCO2, Starboard and Portside Radiometers, Radon and Ozone sensors, Weather Radar, Greenhouse Gas Analysers (Picarro), Air Pressure, Wind Speed and Direction sensors, Photosynthetically Active Radiation (PAR) sensor, Infrared Sea Surface Temperature Autonomous Radiometer (ISAR), Seawater (TSG, fluorometer, optode), Thermosalinographs, CTD, Hydrochemistry. Voyage-specific measurements: Condensation Particle Counters (CPC), Cloud Condensation Nuclei counter (CCN), Triaxus, ECO Triplet, Laser Optical Particle Counter (LOPC), Submersible Ultraviolet Nitrate Analyser (SUNA). The archive for the IN2018_V03 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage IN2019_V02, titled "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania; Subantarctic Biogeochemistry of Carbon and Iron, Southern Ocean Time Series site." The voyage took place from Hobart (TAS) to Hobart between March 14 and April 4, 2019. This voyage consisted of two main projects: SOTS and Subantarctic Biogeochemistry (see formal titles above). For further information please refer to the voyage documentation links below. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Lowered ADCP (LADCP), Fisheries echosounder (EK60), Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), Gravimeter, GPS Positioning System, Doppler Velocity Log, Temperature, Humidity, Pressure, Wind and Rain sensors, Photosynthetically Active Radiation (PAR) sensor, Precision Infrared Radiometer (PIR), Precision Spectral Pyranometer (PSP), Nephelometer, pCO2, Condensation Particle Counters (CPC), Cloud Condensation Nuclei counter (CCN), Scanning Mobility Particle Sizers (SMPS), Multiangle Absorption Photometer (MAAP), Starboard and Portside Radiometers, Radon, Ozone and Oxygen sensors, Weather Radar, Greenhouse Gas Analysers (Picarro), Infrared Sea Surface Temperature Autonomous Radiometer (ISAR), Fluorometer, Oxygen optode, Thermosalinographs (TSG), CTD, Hydrochemistry. Voyage-specific measurements: Triaxus, ECO Triplet, Fluorescence Induction and Relaxation System (FIRe), Submersible Ultraviolet Nitrate Analyser (SUNA), Fast Repetition Rate Chlorophyll-a Fluorometer (FRRf), Transmissometer (AC9), Trace Metals. The archive for the IN2019_V02 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage IN2019_V03, titled "A coupled bio-physical, ecosystem-scale, examination of Australia’s International Indian Ocean Expedition line." The voyage took place between May 14 and June 14, 2019 departing from Fremantle (WA) and arriving in Fremantle. For further information please refer to the voyage documentation links below. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Lowered ADCP (LADCP), Cloud Condensation Nuclei counter (CCN), Condensation Particle Counters (CPC), Greenhouse Gas Analysers (Picarro), Radon and Ozone and sensors, Scanning Mobility Particle Sizers (SMPS), CTD, Hydrochemistry, Gravimeter, pCO2, Fisheries echosounder (EK60), Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), GPS Positioning System, Doppler Velocity Log, Fluorometer, Oxygen optode, Thermosalinographs (TSG), Infrared Sea Surface Temperature Autonomous Radiometer (ISAR), Multiangle Absorption Photometer (MAAP), Nephelometer, Temperature, Humidity, Pressure, Wind and Rain sensors, Photosynthetically Active Radiation (PAR) sensor, Precision Infrared Radiometer (PIR), Precision Spectral Pyranometer (PSP), Weather Radar, Expendable Bathythermographs (XBTs). Voyage-specific measurements: DALEC radiometer, CE600 Underwater radiance camera, HyperPRO in-water profiling radiometer, Free-fall radiometer (C-OPS), Cytometry, Equilibrator Inlet Mass Spectrometry (EIMS), Vertical Microstructure Profiler (VMP), Triaxus, Submersible Ultraviolet Nitrate Analyser (SUNA), EZnet with video, Heron net, Indian Ocean Standard Net, Microzooplankton net, Neuston net, Continuous Plankton Recorder (CPR), Hydrophones, Microbes, Wildlife observations (seabirds, cetaceans and seals). The archive for the IN2019_V03 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage in2018_t02, titled "Harmful Algal Blooms and their long term sediment record in East Coast Tasmanian waters." The voyage took place from Brisbane (QLD) to Hobart (TAS) between May 14 and May2 21, 2018. For further information refer to the Voyage documentation links below. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Disdrometer, Fisheries echosounder (EK60), Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), Gravimeter, GPS Positioning System, Doppler Velocity Log, Met station (temp, humidity, pressure, wind, rain, PIR, PSP, PAR), Nephelometer, pCO2, Starboard and Portside Radiometers, Radon and Ozone sensors, Weather Radar, Greenhouse Gas Analysers (Picarro), Air Pressure, Wind Speed and Direction sensors, Photosynthetically Active Radiation (PAR) sensor, Seawater (TSG, fluorometer, optode), Thermosalinographs, Expendable Bathythermographs (XBTs), hydrophones. Voyage-specific measurements: Condensation Particle Counters (CPC), Cloud Condensation Nuclei counter (CCN), Triaxus, ECO Triplet, Laser Optical Particle Counter (LOPC), Submersible Ultraviolet Nitrate Analyser (SUNA), Ultra Short BaseLine Underwater Positioning System (USBL), Video. The archive for the IN2018_T02 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage in2018_v04, titled "Constraining external iron inputs and cycling in the southern extension of the East Australian Current." The voyage took place from Hobart (TAS) to Hobart between September 11 and October 8, 2018. Supplementary project: "Spatial and temporal variability in the distribution and abundance of seabirds." For further information refer to the Voyage documentation links below. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Lowered ADCP (LADCP), Disdrometer, Fisheries echosounder (EK60), Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), Gravimeter, GPS Positioning System, Doppler Velocity Log, Met station (temp, humidity, pressure, wind, rain, PIR, PSP, PAR), Nephelometer, pCO2, Starboard and Portside Radiometers, Radon and Ozone sensors, Weather Radar, Greenhouse Gas Analysers (Picarro), Air Pressure, Wind Speed and Direction sensors, Photosynthetically Active Radiation (PAR) sensor, Precision Infrared Radiometer (PIR), Precision Spectral Pyranometer (PSP), Seawater (TSG, fluorometer, optode), Thermosalinographs (TSG), CTD, Hydrochemistry. Voyage-specific measurements: Cloud Condensation Nuclei counter (CCN), Condensation Particle Counters (CPC), Continuous Plankton Recorder (CPR), EZnet, Multiangle Absorption Photometer (MAAP), Multicorer, Kasten Corer, Trace Metals, Triaxus, Fluorescence Induction and Relaxation System (FIRe), Submersible Ultraviolet Nitrate Analyser (SUNA), Nutrient (NOx) autoanalyser, Ultra Short BaseLine Underwater Positioning System (USBL), Video, Bird Observations. The archive for the IN2018_V04 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage in2018_t01, titled "Physical and biogeochemical gradients in the East Australian Current." The voyage took place from Hobart (TAS) to Brisbane (QLD) between April 5 and April 14, 2018. For further information refer to the Voyage documentation links below. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Lowered ADCP (LADCP), Disdrometer, Fisheries echosounder (EK60), Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), Gravimeter, GPS Positioning System, Doppler Velocity Log, Met station (temp, humidity, pressure, wind, rain, PIR, PSP, PAR), Nephelometer, pCO2, Starboard and Portside Radiometers, Radon, Ozone and Oxygen sensors, Weather Radar, Greenhouse Gas Analysers (Aerodyne, Picarro), Air Pressure, Wind Speed and Direction sensors, Photosynthetically Active Radiation (PAR) sensor, Precision Infrared Radiometer (PIR),Precision Spectral Pyranometer (PSP), Infrared Sea Surface Temperature Autonomous Radiometer (ISAR), Seawater (TSG, fluorometer, optode), Thermosalinographs (TSG), CTD, Hydrochemistry, Expendable Bathythermographs (XBTs). Voyage-specific measurements: Condensation Particle Counters (CPC), Cloud Condensation Nuclei counter (CCN), ITI Trawl net, Multiangle Absorption Photometer (MAAP), Scanning Mobility Particle Sizers (SMPS), Triaxus, Video. The archive for the IN2018_T01 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility (MNF) RV Investigator research voyage in2016_v05, titled "The Great Barrier Reef as a significant source of climatically relevant aerosol particles." The voyage took place from Brisbane (QLD) to Brisbane between September 28 and October 24, 2016. This voyage consisted of three legs. Leg 1 started from Brisbane on September 28 and finished in Fitzroy Island on October 11. Leg 2 started in Fitzroy Island on October 11 and finished in Magnetic Island on October 16. Leg 3 started in Magnetic Island on October 16 and finished in Brisbane on October 24. Supplementary project: Biogeochemical and optical properties of the Coral Sea and Queensland shelf. Piggy-back project: Project 3DGBR - Multibeam bathymetry mapping of the Great Barrier Reef and Coral Sea. For further information refer to the Voyage documentation links below. Data collected include: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz ), Fisheries echosounder (EK60), Multibeam Echosounder (EM710, EM122), Sub-bottom Profiler (SBP120), Gravity Meter, GPS Positioning System, Doppler Velocity Log, Starboard and Portside Radiometers, Pyranometers, Radon, Ozone and Oxygen sensors, Weather Radar, Greenhouse Gas Analysers (Aerodyne, Picarro), Air Pressure, Wind Speed and Direction sensors, Photosynthetically Active Radiation (PAR) sensor, Thermosalinograph, CTD, Expendable Bathythermographs (XBTs). Voyage-specific data: Aerosol Aerodynamic Particle sizer (APS), Aerosol Chemical Speciation Monitor (ACSM), Condensation Particle Counters (CPC), Cloud Condensation Nuclei counter (CCN, ccnc), Gravity Meter, Hydrochemistry, Infrared Sea Surface Temperature Autonomous Radiometer (ISAR), Microwave Radiometer (MWR), Multiangle Absorption Photometer (MAAP), Nephelometer, pCO2 sensor, Scanning Mobility Particle Sizers (SMPS), Surface Velocity Program Drifters (SVP), Triaxus, ECO Triplet, Laser Optical Particle Counter (LOPC), Submersible Ultraviolet Nitrate Analyser (SUNA), Video. The archive for the IN2016_V05 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.

This record describes the End of Voyage (EOV) archive from the Marine National Facility RV Investigator research voyage in2016_v02, titled 'SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania.' The voyage took place from Hobart to Hobart between March 14 and April 16, 2016. For further information refer to the Voyage documentation links below. Data collected include: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz and LADCP), Scanning Mobility Particle Sizers (SMPS ), Disdrometer, Radon and Greenhouse (Aerodyne and Picarro) sensors, CTD, Hydochemistry, Gravitometer, pCO2 sensor, Fisheries Echosounder (EK60), and Multibeam Echosounder (EM122, EM710 and SBP120). Voyage-specific data include: Laser Optical Particle Counter (LOPC), Trace-Metal Clean Rosette (TMR), FIRe and SUNA on Triaxus, McLane Pumps, Plankton Nets, RESPIRE Sediment Trap, Aerosol Chemical Speciation Monitor (ACSM), Cloud Condensation Nuclei counter (CCN), Proton-transfer-reaction mass spectrometry (PTR-MS), Aerosol Aerodynamic Particle sizer (APS), Continuous Flow Thermal Gradient Diffusion Chamber (CFDCAir), Wide-band Integrated Bioaerosol Sensor (WIBS), Volatility-Hygroscopicity Tandem Differential Mobility Analyzer (VHTDMA), nano SMPS, NOAA Flux Probe, Moorings, Radiosondes, AVISO Satellite Altimeter, Time-of-Flight Aerosol Chemical Speciation Monitor (ToF-ACSM), Proton Transfer Reaction Mass Spectrometer (PTRMS). Three SOCCOM floats were deployed. The archive for the IN2016_V02 EOV raw data is curated by the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart, with a permanent archive located at the CSIRO Data Access Portal (DAP, https://data.csiro.au/dap/), providing access to participants and processors of the data collected in the voyage. All voyage documentation is available electronically to MNF support via the local network. Access to voyage documentation for non-CSIRO participants can be made via DataLibrariansOAMNF@csiro.au.