RV Investigator Voyage IN2017_V02 CTD Data

• Other Authors: CSIRO (hasAssociationWith), CSIRO O&A, Information & Data Centre (pointOfContact), CSIRO Oceans & Atmosphere - Hobart (hasAssociationWith), Dirita, Vito (originator), Dirita, Vito (processor)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; Earth Science | Oceans | Ocean Optics | Turbidity; Earth Science | Terrestrial Hydrosphere | Water Quality/Water Chemistry | Light Transmission; Earth Science | Oceans | Ocean Optics | Photosynthetically Active Radiation; Earth Science | Oceans | Ocean Temperature | Water Temperature; Earth Science | Oceans | Ocean Pressure | Water Pressure; Earth Science | Oceans | Salinity/Density | Salinity; Earth Science | Oceans | Ocean Optics | Fluorescence; Earth Science | Oceans | Ocean Chemistry | Chlorophyll; Earth Science | Oceans | Ocean Chemistry | Nitrate; CTDs (Conductivity-Temperature-Depth Profilers); Fluorometers; Radiation Sensors; Nephelometers; NOX monitor; Coastal Waters (Australia) | Queensland Coast; QLD; Coastal Cities / Towns (Australia) | Brisbane; Marine National Facility; Research Voyage: IN2017_V02; SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania; Vessel Data: CTD; Ship: Investigator (RV); Practical salinity of the water body; Temperature of the water body; Pressure (measured variable) in the water body exerted by overlying sea water and any medium above it; Pressure (measured variable) in the water body exerted by overlying sea water only; CTD; research vessel; Brisbane; Queensland; Southern Ocean; Vito
• Online Access: https://researchdata.edu.au/rv-investigator-voyage-ctd-data/1324762

Progress Code: completed Maintenance and Update Frequency: asNeeded Statement: Original field data. Data processing and quality control by the Marine National Facility Data Acquisition and Processing Group (DAP). Data processed and archived on 13/02/2018. Data were processed using the new CapPro system. Raw CTD data on all channels exhibit greater than typical spiking in values due to noise on the cable. This has been flagged and filtered in the calibrated and averaged data product Credit CTD data processed by Steve Van Graas (CSIRO O&A) Data archived by Vito Dirita (CSIRO O&A). This record describes the Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV Investigator voyage IN2017_V02 titled: "SOTS: Southern Ocean Time Series Automated Moorings for Climate and Carbon Cycle Studies Southwest of Tasmania". The voyage took place between 16 to 27 March 2017 departing from Hobart (TAS) and returning to Hobart (TAS). Data for 11 deployments were acquired using the Seabird SBE911 CTD unit 23, 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. Processing was completed using CapPro processing software, version 2.4. For the duration of the voyage significant spikes were observed across all recorded sensor channels. Investigation strongly suggests electrical interference was the cause of the data spikes, as mitigation measures have alleviated the issue. Care was taken in post processing to remove the spikes while maintaining true data features. The nature of the spiking was primarily extreme values persisting for a single scan, which were suitably detected and flagged by evaluating the second-difference of the data. The final conductivity calibration was based on a single deployment grouping. The final ...