This record describes XBT data collected on RV Investigator voyage IN2019_V06, titled 'Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intra-seasonal SST variability' which departed Darwin on the 19th of October 2019 and returned to Darwin on the 17th of December 2019 ,consisting of two legs. Leg 1 - Darwin, 20:00, 19 October 2019 to Darwin, 19:00, 10 November 2019 Leg 2 - Darwin, 20:00, 11 November 2019 to Darwin, 08:00, 17 December 2019 A total of 33 XBT casts were conducted over the duration of this voyage (27 XBTs in Leg1, 6 XBTs in Leg 2). Data are stored in netCDF files at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes sub bottom profiler data collected on RV Investigator voyage IN2019_V06, titled 'Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intra-seasonal SST variability' which departed Darwin on the 19th of October 2019 and returned to Darwin on the 17th of December 2019 ,consisting of two legs. Leg 1 - Darwin, 20:00, 19 October 2019 to Darwin, 19:00, 10 November 2019 Leg 2 - Darwin, 20:00, 11 November 2019 to Darwin, 08:00, 17 December 2019 The Kongsberg SBP120 (sub bottom profiler) was used to acquire data containing the specular reflections at different sediment interfaces below the seafloor. The SBP120 provides a 3° by 3° angular resolution. The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP120 was logged continuously across the voyage transits between research stations and then turned off once stationary. Data are stored in *.raw and *.segy formats at CSIRO. Leg 1 contains 787 files totalling 13.4 GB of raw data, and *.segy (780 files 13.9 GB) formats at CSIRO Leg 2 contains 894 files totalling 9.7 GB of raw data, and *.segy (886 files 9.6 GB) formats at CSIRO The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping, an attribute calculation for instantaneous amplitude and time variable gain. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request

This record describes multibeam echosounder data collected on RV Investigator voyage IN2019_v06, titled 'Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intra-seasonal SST variability' which departed Darwin on the 19th of October 2019 and returned to Darwin on the 17th of December 2019 ,consisting of two legs. Leg 1 - Darwin, 20:00, 19 October 2019 to Darwin, 19:00, 10 November 2019 Leg 2 - Darwin, 20:00, 11 November 2019 to Darwin, 08:00, 17 December 2019 The Kongsberg EM710 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information around the Northwest Shelf station (121.5 E, 14 S) for Leg 1, and between the Warruwi & Berrimah weather stations in Northern Territory for Leg 2. The EM710 provides a 0.5° by 1° transmit and receive angular resolution respectively. The echosounder's nominal frequency range is from 70 to 100 kHz. Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. Leg 1 contains 56 files totalling 9.3 GB of raw data, covering approximately 483 nautical miles and Leg 2 contains 279 files totalling 129 GB of raw data, covering approximately 1,448 nautical miles. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format is corrected for motion and position. Tide corrections were not applied to the processed data for Leg 1, but were applied to the processed data for Leg 2. Processed data had outliers removed. Processed line data are available in *.gsf and ascii format, and processed bathymetry and backscatter grids in geotiff format. Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes multibeam echosounder data collected on RV Investigator voyage IN2019_V06, titled 'Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intra-seasonal SST variability' which departed Darwin on the 19th of October 2019 and returned to Darwin on the 17th of December 2019 ,consisting of two legs. Leg 1 - Darwin, 20:00, 19 October 2019 to Darwin, 19:00, 10 November 2019 Leg 2 - Darwin, 20:00, 11 November 2019 to Darwin, 08:00, 17 December 2019 The Kongsberg EM122 multibeam echosounder was used to acquire seafloor bathymetry, backscatter information and watercolumn around the Northwest Shelf station (121.5 E, 14 S) for Leg 1, however was not used in Leg 2 due to shallow water (<100m). The EM122 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz. Data are stored in *.all raw format for bathymetry and backscatter and *.wcd format for watercolumn backscatter at CSIRO. There are 467 files totalling 36 GB of raw data in this dataset, covering approximately 1,779 nautical miles. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.all format are corrected for motion and position. Tide corrections were not applied to the processed data. Processed data had outliers removed. Processed line data are available in *.gsf and ascii format, and processed bathymetry and backscatter grids in geotiff format. Additional information regarding this dataset, including information on processing streams, is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes gravity data collected on RV Investigator voyage IN2019_V06, titled 'Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intra-seasonal SST variability' which departed Darwin on the 19th of October 2019 and returned to Darwin on the 17th of December 2019 ,consisting of two legs. Leg 1 - Darwin, 20:00, 19 October 2019 to Darwin, 19:00, 10 November 2019 Leg 2 - Darwin, 20:00, 11 November 2019 to Darwin, 08:00, 17 December 2019 The gravity meter instrument is a MicroG Lacoste Air-Sea II. Data are stored in .ENV and .DAT data files at CSIRO. There are 44 files totalling 392 MB of raw data in this dataset for Leg 1. There are 88 files totalling 680 MB of raw data in this dataset for Leg 2. Wharf tie[s] were undertaken upon returning to Darwin on gravity station 1991980532: Stokes Wharf West, using a Scintrex Autograv CG-5. Wharf tie data can be found in T011050.TXT, which is stored with the raw data. No processing has been conducted on this data. Additional information regarding this dataset is contained in the GSM data acquisition and processing report.

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2019_V06, titled 'Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intra-seasonal SST variability' which departed Darwin on the 19th of October 2019 and returned to Darwin on the 17th of December 2019 ,consisting of two legs. Leg 1 - Darwin, 20:00, 19 October 2019 to Darwin, 19:00, 10 November 2019 Leg 2 - Darwin, 20:00, 11 November 2019 to Darwin, 08:00, 17 December 2019 The Simrad EK60 split beam echosounders 18, 38, 70 120, 200 and 333 kHz were used to acquire acoustic backscatter data, around the Northwest Shelf station (121.5 E, 14 S) for Leg 1 only. The port drop keel position was set to 4 m and the starboard drop keel set to flush with hull for the duration of the voyage. The EK60 was switched off on Leg 1 (00:45 23-Oct-2019) at the request of the Chief Scientist to reduce interference on the ADCP data. This remained off for the duration of Leg 2. Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 174 files totalling 8.39 GB of raw data in this dataset (note that raw_ek60 data was only collected on Leg 1) No Post-Processing has been conducted on this data. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes the BASTA radar and Radiosonde products by Protat et al. (2020) from observations made in the Northern Territory northwest region. A shipborne 95 GHz Doppler cloud radar mounted on a stabilized platform was used to retrieve vertical profiles of three-dimensional (3D) winds by sequentially pointing the stabilized platform in different directions. The resulting dataset consists of the processed BASTA 3D winds (the subject of the paper), and the radiosonde dataset, which is used for validation. For more details please refer to the cited article (download link provided below): Protat, A. and I. McRobert (2020): Three-dimensional wind profiles using a stabilized shipborne cloud radar in wind profiler mode. Atmos. Meas. Tech., 13, 1–12. https://doi.org/10.5194/amt-13-1-2020.

This record describes the Acoustic Doppler Current Profiler (ADCP) data collected from the Marine National Facility RV Investigator voyage IN2019_V06, titled: "Tropical observations of atmospheric convection, biogenic emissions, ocean mixing, and processes generating intraseasonal SST variability." The voyage took place from Darwin (NT) to Darwin between October 19 and December 17, 2019. Data was collected during in2019_v06 for the duration of the voyage. Data was collected using UHDAS and post-processed using CODAS. The voyage consisted of two legs, with a port visit on 11 November 2019. The ADCP data for both legs have been processed as one dataset. Leg 1 was 19 October to 11 November 2019, Leg 2 from 11 November to 17 December 2019. The RDI Ocean Surveyor 150kHz ADCP was run in both narrowband and broadband for various sections of the voyage. The RDI Ocean Surveyor 75kHz ADCP was run in narrowband for a section of the voyage. Both transducers were switched off during the port period on 19 October. Both transducers were switched off from 00:45 to 02:07 UTC on 9 October. Internal triggering was used. The drop keel was at 4m extension (10.54m below centre of reference) for leg 1 and 1.19m extension (flush with gondola, 7.93m below centre of reference) for leg 2. The bin sizes for the 150kHz ADCP were changed at various times throughout the voyage to obtain finer data granularity when the depth was shallow. See the voyage computing and electronics reports for more details regarding data acquisition. 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 Conductivity-Temperature-Depth (CTD) data collected from the Marine National Facility RV 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 96 deployments (Leg-1) were acquired using the Sea-Bird SBE911 CTD #24, fitted with 24 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. Data for 327 deployments (Leg-2) were acquired using the Sea-Bird SBE911 CTD 24, fitted with 24 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. A Biospherical PAR, Tritech Altimeter, C-Star Transmissometer, WET Labs CDOM, WET Labs ECO Scattering, and WET Labs ECO Chlorophyll sensor, were also installed 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 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.