MISO: Real-Time Aerosol Chemistry from the Southern Ocean Voyage

IN2024_V01 voyage data provides high-resolution, real-time measurements of non-refractory aerosol composition in the Southern Ocean from January to March 2024. The Time-of-Flight Aerosol Chemical Speciation Monitor (ToF-ACSM) captured nitrate, ammonium, sulfate, organics, chloride, and sea salt. This multidisciplinary dataset supports research on ocean-atmosphere interactions, aerosol-cloud processes, and biogeochemical cycles in a critical climate region.

Use Cases

• Modeling aerosol-cloud interactions based on real-time chemical speciation data.
• Analyzing seasonal biogeochemical cycles from time-series measurements of nitrate and sulfate.
• Studying marine aerosol sources by correlating sea salt and organic compound concentrations.
• Investigating atmospheric chemistry processes using high-resolution ammonium and chloride data.

Strengths

• Data provides high-resolution, real-time measurements from a dedicated scientific voyage.
• Covers a specific and temporally bounded period from 2 January to 5 March 2024.
• Focuses on the climatically significant and data-sparse Southern Ocean region.

Limitations

• Key metadata such as row count, column names, and data license are not provided in any source.
• The dataset's availability is unclear as file formats listed (HTML, PNG) suggest metadata or visualizations rather than the core data.
• Conflicting 'last updated' dates (2026-04-26 and 2026-03-25) create uncertainty about versioning.

Provenance

Source

CSIRO Marlin Data Catalogue, collected during the RV Investigator voyage IN2024_V01.

Collection Method

Measured using a Time-of-Flight Aerosol Chemical Speciation Monitor (ToF-ACSM).

Time Range

2 January 2024 to 5 March 2024 (AEST)

Freshness

Last updated 2026-04-26 16:22:38.836306

Geography

Southern Ocean, voyage departed Hobart and returned to Fremantle.