IN2024_V01: Southern Ocean Atmospheric Trace Gas Measurements

Measurements of dimethyl sulfide (DMS) and methanethiol (MeSH) were collected from 2 January to 5 March 2024 during the RV Investigator voyage IN2024_V01. Data were acquired using a Proton Transfer Reaction Time-of-Flight Mass Spectrometer (PTR-ToF-MS) on a transect from Hobart to Fremantle. These observations support studies of biogeochemical cycling, climate interactions, and ocean-atmosphere processes in the Southern Ocean.

Use Cases

• Modeling DMS sea-to-air flux based on atmospheric concentration time series.
• Investigating links between ocean biogeochemistry and atmospheric trace gas composition.
• Studying the role of sulfur compounds in Southern Ocean cloud formation and climate.
• Calibrating and validating satellite-derived ocean productivity or atmospheric composition products.

Strengths

• Data covers a specific 2-month research voyage (2 Jan - 5 Mar 2024) in a critical climate region.
• Uses a high-sensitivity instrument (PTR-ToF-MS) for measuring volatile organic compounds.
• Dataset is hosted on a government platform (data.gov.au) and associated with a major research organization (CSIRO).

Limitations

• Column names and data structure are not provided, limiting immediate usability.
• No information on data license, row count, or file size is available.
• Metadata shows multiple update timestamps (2026-04-08, 2026-04-26) for identical descriptions, suggesting potential administrative duplication.

Provenance

Source

CSIRO Marlin Data Catalogue

Collection Method

Measurements acquired using a Proton Transfer Reaction Time-of-Flight Mass Spectrometer (PTR-ToF-MS) onboard the RV Investigator.

Time Range

2 January 2024 to 5 March 2024 (AEST)

Freshness

Last updated 2026-04-26 16:22:58.777021

Geography

Southern Ocean, voyage track from Hobart to Fremantle.