This record describes Hydrology (HYD) data collected collected from the Marine National Facility RV Investigator Voyage IN2018_V01, titled: "Detecting Southern Ocean change from repeat hydrography, deep Argo and trace element biogeochemistry & CAPRICORN." The voyage took place between January 11 and February 21, 2018 departing from Hobart (TAS) and arriving in Hobart. Five nutrients were analysed; silicate, phosphate, nitrate + nitrite, nitrite and ammonium. This was the first time ammonium has been measured successfully on every station for a hydrographic voyage. High quality data was produced for the three measured parameters. Certified reference materials for nutrients in seawater were within the specified limits of the certified value. This dataset has been archived at the CSIRO O&A Information and Data Centre (IDC) in Hobart. Additional information regarding this dataset is contained in the Voyage Report and Data Processing Report.

This dataset contains the processed Hydrology or "Bottle Data" (HYD) data collected on Marelda cruise M 2/61. This voyage took place off the SE Victoria Coast from 28/2/1961 to 30/3/1961. This dataset has been processed and is archived within the CSIRO Marine and Atmospheric Research Data Centre in Hobart.

This dataset contains the processed Hydrology or "Bottle Data" (HYD) data collected on Marelda cruise M 1/62. This voyage took place off the NSW Coast from 15/3/1962 to 6/4/1962. This dataset has been processed and is archived within the CSIRO Marine and Atmospheric Research Data Centre in Hobart.

This dataset contains the processed Hydrology or "Bottle Data" (HYD) data collected on Marelda cruise M 4/62. This voyage took place off the NSW Coast from 24/7/1962 to 10/8/1962. This dataset has been processed and is archived within the CSIRO Marine and Atmospheric Research Data Centre in Hobart.

This dataset contains the processed Hydrology or "Bottle Data" (HYD) data collected on Penaeus cruise PEN 1 [1975]. This voyage took place in the Moreton Bay, Queensland region from 19/8/1975 to 19/8/1975. This dataset has been processed and is archived within the CSIRO Marine and Atmospheric Research Data Centre in Hobart.

This record describes the Underway (UWY) data collected from the Marine National Facility (MNF) RV Investigator 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 between March 14 and April 5, 2019 departing from Hobart (TAS) and arriving in Hobart. Standard Underway data is continuously recorded, consisting of: (1) Navigation data (NAV): Latitude, Longitude, Speed, Heading, Course Over Ground, Gyros, and Doppler Log (dual GPS instrument). (2) Thermosalinograph (TSG): Water Salinity, Flow-Rate, Temperature, Fluorescence, pCO2 and Optode/Oxygen. (3) Atmospheric (MET): Humidity, Wind Speed and Direction (vane and ultrasonic), Radiometer/Sea Surface Temperature, Pyranometer/Solar Radiation, Photosynthetically Active Radiation (PAR), Air Temperature, Air Pressure, Rain, Ozone and Trace Gases (port and starboard instruments). The quality-controlled RV Investigator underway meteorological and SST data are supplied to the IMOS AODN where they are publicly available at the "Ships of Opportunity" Thredds server (http://thredds.aodn.org.au/thredds/catalog/IMOS/SOOP/SOOP-ASF/VLMJ_Investigator/catalog.html) for research. From there, they are downloaded by NOAA for their In Situ Quality Monitoring web site (iQUAM2) and made available for satellite SST validation. The SBE 38 SST data are used within the Australian Bureau of Meteorology for real-time satellite SST validation and ingested into real-time SST analyses which are then used as the boundary condition for Numerical Weather Prediction models. The meteorological and SST data are uploaded onto the Global Telecommunications System (GTS) for global dissemination to Meteorological Agencies, and separately supplied to the SAMOS (http://samos.coaps.fsu.edu/html/) Project for air-sea flux research. The real-time SBE 38 SST data are currently (2017) used in the following data products (accessed via the GTS): • International Comprehensive Ocean-Atmosphere Data Set (ICOADS R3.0) (http://icoads.noaa.gov/) • NOAA NCEI Extended Reconstructed Sea Surface Temperature version 4 (ERSST.v4) (https://www.ncdc.noaa.gov/data-access/marineocean-data/extended-reconstructed-sea-surface-temperature-ersst-v4) • Hadley Centre SST Data Set (HadSST3) (http://www.metoffice.gov.uk/hadobs/hadsst3/) • Global Ocean Surface Underway Data (GOSUD) Project (http://www.gosud.org/) • Bureau of Meteorology daily and weekly SST analyses (http://www.bom.gov.au/marine/sst.shtml) • NOAA NCEI “Reynolds” daily global OISST analysis (https://www.ncdc.noaa.gov/oisst) • NASA JPL “MUR” 1 km daily global SST analysis (https://mur.jpl.nasa.gov/) • UK Met Office “OSTIA” daily global SST analysis (http://ghrsst-pp.metoffice.com/pages/latest_analysis/ostia.html) • CMC daily global SST analysis • Ourocean “G1SST” global daily 1 km SST analysis (https://ourocean.jpl.nasa.gov/SST) As part of the underway data gathering system, other datasets are produced (e.g., pCO2, ISAR SST) which are processed separately and have their own metadata records. Data are recorded at 5 second intervals. Near real-time data are available via the link "Visualisation tool for Underway Data." This dataset will be processed and archived within the CSIRO Oceans & Atmosphere (O&A) Information and Data Centre (IDC) in Hobart (TAS). Data are available at time intervals of 5 sec (NetCDF format), 10 sec and 5 min (ASCII format). Additional information regarding this dataset is contained in the Voyage Summary and/or the Data Processing Report for this voyage.

This dataset contains the processed Hydrology (HYD) data collected on Franklin voyage FR 02/99. The voyage took place in the Coral Sea and the South Pacific Ocean during March and April 1999. This dataset currently exists as raw data only, and will be available from the CSIRO Marine and Atmospheric Research Data Centre in Hobart once processing has been completed. Additional information regarding this dataset is contained in the cruise report for this voyage and/or the data processing report. Franklin on-voyage hydrology data are typically obtained from water samples collected in Niskin bottles at various depths during each CTD cast. Parameters measured normally comprise temperature, salinity, dissolved oxygen, phosphate, nitrate, silicate, nitrite and ammonia.

This dataset comprises the Multi-net plankton sampling collected during the SEA-MES program across four RV Investigator voyages (IN2023_V05, IN2024_V03, IN2024_V05, IN2025_V04). A total of 173 Multi-net operations were conducted, using 100 µm and 500 µm mesh nets to collect depth-stratified samples through the water column, capturing both day and night to assess diel vertical migration. The dataset includes 560 samples from 100 µm nets and 140 samples from 500 µm nets, providing information on zooplankton composition, biomass, and community structure, including 58,246 individuals from 105 genera and 70 families identified to date. These data provide a detailed view of pelagic biodiversity across the south-eastern continental shelf and upper slope of Australia.

This dataset contains the Hydrology (HYD) data collected on Southern Surveyor voyage ss2011_T03. The voyage took place in along Australia's southern coast and continental shelf from Hobart to Fremantle from the 13th to the 23rd August, 2011. This dataset has been processed and archived within the CSIRO Marine and Atmospheric Research Data Centre in Hobart. Additional information regarding this dataset is contained in the cruise report for this voyage and/or the data processing report. Southern Surveyor on-voyage hydrology data are typically obtained from water samples collected in Niskin bottles at various depths during each CTD cast. Parameters measured normally comprise temperature, salinity, dissolved oxygen, phosphate, nitrate, silicate, and nitrite.

This record describes the catch data from the Marine National Facility (MNF) RV Investigator voyage IN2023_V05, titled "Untangling the causes of change over 25 years in the southeast marine ecosystem (SEA-MES Voyage 1)." The voyage took place between 27 June 2023 and 29 July 2023 (AEST), departing from Hobart and returning to Hobart. The dataset contains catch data for specimens collected by Museums Victoria during the voyage. Records include species identification, counts and/or weights, and are linked to sampling metadata such as station number, location (latitude and longitude), depth, time, and gear type. These data provide a baseline for assessing species composition, abundance, and distribution, supporting long-term monitoring, research, and management of the southeast Australian marine ecosystem.