Voyage details and related metadata, reports, events and data.
IN2025_V03
- is a Marine National Facility 
voyage
Title: COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook
Period: 2025-04-28 22:00 to 2025-05-17 22:00 UTC
Duration: 19.00 days
From: Hobart To: Hobart
Ship: Investigator (RV) [details]
Description:
The World Meteorological Organization’s (WMO) Global Atmosphere Watch (GAW) program consists of an observational network charged with understanding the increasing influence of human activity on the global atmosphere. The kennaook / Cape Grim Baseline Air Pollution Station (KCGBAPS), measuring the Southern Ocean’s atmosphere from the northwest tip of Tasmania, is one of three premier global GAW stations. By utilising the mobility of the RV Investigator (RVI), the world’s first mobile GAW station, both stations can be compared directly and data quality improved and validated. This high-quality observational data feeds directly into improving both regional and global climate, air quality and Earth System models.
This project aims to:
1. Directly compare two world-leading WMO-GAW stations, the RVI and the KCGBAPS – a global first. This will include validating the RVI’s full suite of atmospheric measurements and sampling systems against complementary measurements at the KCGBAPS, improving data quality for all locations visited by the vessel.
2. Validate how representative measurements of atmospheric composition and boundary layer structure at the KCGBAPS is of the broader Southern Ocean.
3. Provide improved characterisation of atmospheric structure and composition to inform and improve earth system, climate, air quality and smoke forecasting models.
4. Determine the best boundary conditions for air quality modelling over Australia by improving our understanding of Southern Ocean and Cape Grim baseline concentrations of a range of trace atmospheric constituents.
Leader: Ruhi Humphries
Projects:
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COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook [details] Primary
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Deployment of Argo floats including Australian core, deep, and BGC, and floats from international partners [details] Piggy-back
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Natural Iron Fertilisation of the Southern Ocean: Linking terrestrial dust and bushfires to marine biogeochemistry [details] Piggy-back
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Revealing offshore records of Cainozoic volcanism at kennaook/Cape Grim [details] Piggy-back
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Southern Ocean Winter Cloud Interactions processes (SOWCLIP) [details] Piggy-back
Voyage extents: 45° 09.3' S to 40° 39.0' S 132° 42.1' E to 148° 07.2' E
- Argo Float Data from RV Investigator voyages [details]
- RV Investigator Sea Carbon Dioxide (CO2) Data - Selected Voyages (2014 onwards) [details]
- RV Investigator Voyage IN2025_V03 ADCP Data [details]
- RV Investigator Voyage IN2025_V03 EK80 Echosounder [details]
- RV Investigator Voyage IN2025_V03 EM124 Multibeam Echosounder Data [details]
- RV Investigator Voyage IN2025_V03 EM2040 MKII Multibeam Echosounder Data [details]
- RV Investigator Voyage IN2025_V03 End of Voyage (EOV) Archive [details]
- RV Investigator Voyage IN2025_V03 Gravity Data [details]
- RV Investigator Voyage IN2025_V03 SBP29 Sub-bottom Profiler Data [details]
- RV Investigator Voyage IN2025_V03 Underway (UWY) Data [details]
- RV Investigator Voyage IN2025_V03 XBT Data [details]
Participants - on ship:-
| Name | Role | Organisation | Project |
|---|---|---|---|
| Alain Protat | Alternate Chief Scientist; PI SOWCLIP | Bureau of Meteorology | Southern Ocean Winter Cloud Interactions processes (SOWCLIP) |
| Max McGuire | Voyage Manager | Marine National Facility | Voyage Management on RV Investigator |
| Robyn Schofield | Alternate Chief Scientist | University of Melbourne | COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook |
| Ruhi Humphries | Chief Scientist | CSIRO Environment | COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook |
Participants - shore based:-
| Name | Role | Organisation | Project |
|---|---|---|---|
| Andrew Bowie | PI Piggyback | University of Tasmania | Natural Iron Fertilisation of the Southern Ocean: Linking terrestrial dust and bushfires to marine biogeochemistry |
| Branka Miljevic | PI | Queensland University of Technology | COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook |
| Christina Schallenberg | PI Piggyback | CSIRO Environment | Deployment of Argo floats including Australian core, deep, and BGC, and floats from international partners |
| Gabriela Semolini Pilo | PI Piggyback | CSIRO Environment | Deployment of Argo floats including Australian core, deep, and BGC, and floats from international partners |
| Jay Mace | PI Piggyback | University of Utah (USA) | Southern Ocean Winter Cloud Interactions processes (SOWCLIP) |
| Jessie Creamean | PI Piggyback | Colorado State University (USA) | Southern Ocean Winter Cloud Interactions processes (SOWCLIP) |
| Jodi Fox | PI Piggyback | University of Tasmania | Revealing offshore records of Cainozoic volcanism at kennaook/Cape Grim |
| Melita Keywood | PI | CSIRO Environment | COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook |
| Paul Krummel | PI | CSIRO Environment | COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook |
| Simon Alexander | PI Piggyback | Australian Antarctic Division | Southern Ocean Winter Cloud Interactions processes (SOWCLIP) |
| Steven Siems | Pi Piggyback | Monash University | Southern Ocean Winter Cloud Interactions processes (SOWCLIP) |
| Suzie Molloy | PI | CSIRO Environment | COAST‐k – Clean Ocean Air Sampling upwind of Tasmania ‐ kennaook |
This list includes those that may have only been on part of the voyage. See voyage reports on 'Reports and Maps' tab for details.
Marine National Facility Reports - plans, summaries and data processing
- IN2025_V03 Voyage Plan - includes objectives, investigator details, proposed data collection, voyage track and equipment to be used.
- IN2025_V03 ADCP Data Processing Report - details of data processing steps, calibration information, instruments used and any issues with the data.
- IN2025_V03 Underway Data Processing Report - details of data processing steps, calibration information, instruments used and any issues with the data.
- IN2025_V03 Summary and Highlights Report - includes preliminary results, voyage narrative, types of data collected with C77/ROSCOP codes.
- View Survey map
Publications, reports and datasets from this voyage.
Dataset
- Schmitt, Andreas (2026): Ice Nucleating Particle (INP) concentrations during COAST-k (17-04-2026). Karlsruhe Institute of Technology. 10.35097/z2eh9hkk0yqb8bws
- Tilbrook, Bronte; Neill, Craig; Akl, John (2025). Integrated Marine Observing System (IMOS) sea surface and atmospheric fCO2 measurements in the South Pacific Ocean, Tasman Sea onboard R/V Investigator in 2025 (NCEI Accession 0310599). NOAA National Centers for Environmental Information. Dataset. 10.25921/9qgr-pj77
Thesis
- Chelsea A. Bekemeier (2025) Investigating the sources of Southern Ocean and coastal Antarctic ice nucleating particles: The Cloud And Aerosol Impacts Over The Southern Ocean (Caiso) Project. Colorado State University Thesis. Colorado State University ProQuest Dissertations & Theses, 2025. 32244903. External link to reference
Search for publications, reports and datasets from this and other voyages
Data publishing
This is a list of online datasets hosted by CSIRO. Other processed datasets hosted by collaborating organisations may be found on the 'Metadata' or "Reports, Publications and Maps' tab.
Use the Get data link on the right to extract data using the NCMI Data Trawler.
| Data Stream | Data Summary | Get data | ||||||||||||
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| ADCP Data |
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| Gravity Measurements |
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| Multibeam echosounder |
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| pCO2 |
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External link - download datafile at IMOS
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| Singlebeam echosounder |
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| Underway |
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Download the 5-second Underway data (netCDF format)
Download the 10-second Underway data (CSV format) Download the 1-minute Underway data (CSV format) Download the 5-second Underway data (CSV format) Download the 5-second Underway data (Matlab format) Download the 5-minute Underway data (CSV format) |
| ID | When (UTC) | Lat | Long | Instrument | Identifier | Action | Log | Subject / Comment |
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Deployments by start time:- Click on column header to sort. Use link on 'Deployment' to see full details. Use the CSV button at the bottom to export data (tab delimited).
Search for deployments from this voyage and others
| Deployment | Operation | Station | Cast | Gear | Project | Datetime | Start Location | End Location | Depth range | Max Depth | Description | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Start | End | Lat | Lon | Lat | Lon | |||||||||
| Underway System [details] | Air Sampling Inlet Mode,Air Temperature Sensor - ROTRONIC T&RH HC2A-S3,Air Temperature Sensor - ROTRONIC T&RH HC2A-S3,Air Temperature Sensor - ROTRONIC T&RH HC2A-S3,Air Temperature Sensor - ROTRONIC T&RH HC2A-S3,Burket Flow meter,Burket Flow meter,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO Hobart pCO2,CSIRO air sampling inlet,CSIRO air sampling inlet,Depth: TECHSAS-DERIVED. For more information contact the Data Acquisition and Processing group.,Fluorometer Concentration,Fluorometer WSCHL-1441,Gyrocompass,IMOS Port Pyranometer-SN 35123F3,IMOS Port Radiometer-SN 35111F3,IMOS Stbd Pyranometer-SN 29125F3,IMOS Stbd Radiometer-SN 29140F3,IMOS wind monitor,IMOS wind monitor,IMOS wind monitor,IMOS wind monitor,ISAR SST,Kobold MIK-C Flow meter,Kobold MIK-C Fluorometer Flow Meter,Kongsberg Maritime Skipper DL850 doppler log,Kongsberg Maritime Skipper DL850 doppler log,Kongsberg Maritime Skipper DL850 doppler log,Kongsberg Maritime Skipper DL850 doppler log,Kongsberg Maritime Skipper DL850 doppler log,Kongsberg Maritime Skipper DL850 doppler log,LI-COR LI-190 Quantum Sensor,LI-COR LI-190 Quantum Sensor,MAAP Status,Multiangle Absorption Photometer (MAAP),Multiangle Absorption Photometer (MAAP),Optode Dissolved Oxygen Concentration,Optode Dissolved Oxygen Saturation,Optode Water Temperature,Ozone Monitor RVT1,Ozone Monitor RVT1,Ozone Monitor RVT2,Ozone Monitor RVT2,Picarro Greenhouse Gas Spectrometer CO2,CH4,H2o,Picarro Greenhouse Gas Spectrometer CO2,CH4,H2o,Picarro Greenhouse Gas Spectrometer CO2,CH4,H2o,Port Rain Gauge,Port drop keel sensor,RM Young 05106 wind monitor,RM Young 05106 wind monitor,RM Young 05106 wind monitor,RM Young 05106 wind monitor,RM Young 05106 wind monitor,RM Young Wind Sensor Type 05106,RM Young Wind Sensor Type 05106,RM Young Wind Sensor Type 05106,RM Young Wind Sensor Type 05106,Remote Temperature (T) - SN 672,Seapath 330+,Seapath 330+,Seapath 330+,Seapath 330+,Starboard Rain Gauge,Starboard drop keel sensor,ThermoSalinoGraph (TSG)-SN 3470,ThermoSalinoGraph (TSG)-SN 3470,Vaisala Ship's Barometer PTB330 | 2025-04-28 22:04 | 2025-05-17 21:28 | -42.8862 | 147.3392 | -42.8864 | 147.3389 | |||||||
| ADCP Data [details] | Teledyne RDI ADCP 150 kHz,Teledyne RDI ADCP 75 kHz | 2549 | 2025-04-29 06:00 | 2025-05-17 17:22 | -43.5777 | 147.3497 | -43.1187 | 147.4574 | 750 | |||||