This record describes the Acoustic Doppler Current Profiler (ADCP) data collected from the Marine National Facility RV Investigator voyage IN2016_V03, titled: "Monitoring Ocean Change and Variability along 170oW from the ice edge to the equator." The voyage took place between April 26 and June 30, 2016 departing Hobart (TAS) and returning to Lautoka (Fiji). Data was collected during in2016_v03 for the duration of the voyage. Data was collected using VMDAS and post-processed using CODAS. See the voyage computing and electronics report for more details regarding data acquisition. Data was processed by Jules Hummon from University of Hawaii. This submitted dataset is unchanged from earlier versions. This dataset was processed and then archived within the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart.

This record describes the Underway (UWY) data collected from the Marine National Facility (MNF) RV Investigator voyage IN2016_V03 Titled: "Monitoring Ocean Change and Variability along 170W from the ice edge to the equator ". The voyage took place between the 26th April to 30th of June, 2016 departing Hobart and arriving in Lautoka (Fiji). The voyage comprises of two Legs: Leg-1: Hobart to Wellington (NZ) from 26 April to 26 May 2016 Leg-2: Wellington to Lautoka (Fiji) from 27 May to 30 June 2016 Standard Underway data is continuously recorded, it consists of: (1) NAV: Navigation data: (dual GPS) Latitude, Longitude, Speed, Heading, course over ground, Gyros, and Doppler Log. (2) TSG: Thermosalinograph: Water Salinity, flow-rate, Temperature, Fluorescence, and pCO2. (3) MET: Atmospheric (port and starboard): Humidity, Wind speed and direction (vane and ultrasonic), Radiometer, Pyranometer, PAR, Air temperature, Air pressure, Rain, Ozone and Trace gases. Data are recorded at 5 second intervals. Near real-time data is available via the link below. This dataset will be processed and archived within the CSIRO Oceans & Atmosphere Data Centre in Hobart. Data is available in 5sec intervals in NetCDF, 10 sec and 5 min intervals in ascii format. Additional information regarding this dataset is contained in the cruise report for this voyage and/or the data processing report.

This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2016_V03, titled: "Monitoring Ocean Change and Variability along 170o W from the ice edge to the equator." The voyage took place between April 26 and June 30, 2016 departing from Hobart (TAS) and arriving in Lautoka (Fiji). Data for 141 deployments were acquired using the Seabird SBE911 CTD 20, fitted with 36 twelve litre bottles on the rosette sampler. CSIRO supplied calibrations were applied to the temperature, conductivity, oxygen, and pressure data. The data were subjected to automated QC to remove spikes and out-of-range values. The final conductivity calibration is based on multiple deployment groupings, due to sensor and deck box changes. Processing was performed on each unique sensor configuration in order to best account for the individual characteristics of each sensor. The final calibration from the primary sensor for casts 1-7 had a standard deviation (S.D) of 0.00088 PSU, a S.D of 0.00117 for casts 8-46, and S.D of 0.00114 for casts 47-141, well within our target of ‘better than 0.002 PSU’. The standard product of 1 dbar binned averaged were produced using data from the primary temperature and conductivity sensors, and the secondary Oxygen sensor. Similarly, the dissolved oxygen data were calibrated in groups of deployments due to sensor changes. The agreement between the CTD and bottle data was good. A Fluorometer, Transmissometer, and altimeter were also installed and logged on the auxiliary A/D channels of the CTD. The collected data were subsequently processed and archived within the CSIRO Oceans and Atmosphere (O&A) Information and Data Centre (IDC) in Hobart. Additional information regarding this dataset may be contained in the Voyage Summary and the CTD Data Processing Report.

This record describes the End of Voyage (EOV) archive from the Marine National Facility RV Investigator research voyage in2016_v03, titled "Monitoring Ocean Change and Variability along 170 W from the ice edge to the equator." The voyage consisted of two legs: Leg 1 from Hobart (TAS) to Wellington (NZ) between April 27 and May 26, and Leg 2 from Wellington (NZ) to Lautoka (Fiji) from April 27 to June 28, 2016. Main project: "Monitoring Ocean Change and Variability along 170oW from the ice edge to the equator." Supplementary project: "Facing the challenges of under-ice for autonomous navigation." 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, Oxygen, Radon, and Greenhouse (Aerodyne and Picarro) sensors, CTD, Hydrochemistry, Gravitometer, Fisheries Echosounder (EK60), Multibeam Echosounder (EM122, EM710, SBP120), Weather Radar, XBT. Voyage-specific data include: Sea-ice measurements, Aerosol Chemical Speciation Monitor (ACSM), Aerosol Aerodynamic Particle sizer (APS), Carbon sensor, Cloud Condensation Nuclei counter (CCN), Chlorofluorocarbons/Sulfur Hexafluoride/Nitrogen Oxides sensor(CFC SF6 Nox), Turbulence Chipods, Condensation Particle counter (CPC), Micro Rain Radar (MRR), Microwave Radiometer (MWR), Neutral cluster Air Ion Spectrometer (NAIS), Proton-transfer-reaction mass spectrometer (PTR-MS), FOG-based High-performance Inertial Navigation System (PHINS INS), Volatile Organic Compounds (VOC) sensor, Gas Chromatograph (SEQ), Volatility-Hygroscopicity Tandem Differential Mobility Analyser (VHTDMA). The archive for the IN2016_V03 EOV data is curated by the CSIRO Oceans and Atmosphere Data Centre 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 Marine National Facility RV Investigator IN2016_V03 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. All processed data from this voyage are made publicly available through the MNF Data Trawler (in the related links).