RV Investigator Voyage IN2019_V06 Triaxus (undulating CTD) Data

This record describes the data (CTD, Dissolved Oxygen, Transmissometer, PAR, ECO Triplet and LOPC) collected using the towed TRIAXUS platform on Investigator voyage IN2019_V06, titled: "Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intraseasonal SST variability." The voyage took place between October 19 and December 17, 2019 departing from Darwin (NT) and arriving in Darwin.

Data for 3 Triaxus tows were acquired using Seabird’s SeaSave acquisition software using the Seabird SBE911+ CTD 23. Sea-Bird and O&A Calibration lab supplied calibration factors were used to compute the pressure, preliminary conductivity, oxygen and temperature values. The data was subjected to automated QC to remove spikes and out-of-range values.

Dissolved oxygen sensors, Transmissometer and Cosine Photosynthetically Active Radiation (PAR) sensor were also installed on the auxiliary A/D channels of the CTD. In addition to the auxiliary channels, ECO Triplet and LOPC were mounted on the Triaxus as attached payloads. An RBRconcerto3 CTD|ODO sensor measuring temperature, conductivity and oxygen was mounted on the Triaxus frame from Deployment 2 Leg 1.

The standard data product (1 decibar/10 second binned averaged) was produced using data from the primary and seconday sensors to produce an along-track time-series dataset for each data recording file. These files were grouped into sections containing each Triaxus tow and in each tow, vertical casts were created with interpolated values from the along-track time-series binned dataset with a maximum interpolation distance of 2 cast. These generated the along-track and vertical cast section data products for each Triaxus tow.

During some of the deployments, issues occurred with the Triaxus vehicle. As a result, standard data products could not be made for these deployments.

The collected data were subsequently 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 Data Processing Report.