OISO-17 Cruise: Surface Ocean Carbon Chemistry in the Indian Ocean

Indian Ocean surface measurements from the 2009 OISO-17 research cruise capture dissolved inorganic carbon, total alkalinity, temperature, and salinity. The data are part of the long-term OISO program, initiated in 1998, which monitors carbon dioxide and associated parameters along repeated ship tracks in the South-Western Indian and Southern Oceans. These observations contribute to international synthesis projects like the Surface Ocean CO2 Atlas (SOCAT) and the Global Ocean Data Analysis Project (GLODAP).

Use Cases

• Calibrating and validating ocean carbon models based on direct measurements of DIC and alkalinity.
• Assessing ocean acidification trends in the Indian Ocean using time-series carbon chemistry data.
• Studying air-sea CO2 flux dynamics using parameters like pCO2, temperature, and salinity.
• Integrating cruise data into global carbon atlases (e.g., SOCAT, GLODAP) for climate change research.

Strengths

• Data is part of a long-term monitoring program (OISO) initiated in 1998, providing context for time-series analysis.
• Regularly included in authoritative international data synthesis projects (SOCAT and GLODAP), indicating quality and interoperability.
• Provides specific, complementary coverage in the South-Western Indian and Southern Oceans as part of the IOCCP.

Limitations

• Column names and detailed data structure are not provided in the available metadata, limiting immediate usability.
• Conflicting 'last updated' dates (2009-02-09 vs. 2026-03-05) create uncertainty about metadata maintenance and potential reprocessing.
• Key metadata such as row count, file size, specific license, and data author are unavailable.

Provenance

Source

National Oceanic and Atmospheric Administration (NOAA), Department of Commerce, via the OISO (Ocean Indien Service d'Observations) program.

Collection Method

Surface underway measurements collected during the R/V Marion-Dufresne OISO-17 cruise (EXPOCODE 35MV20090104).

Time Range

2009-01-04 to 2009-02-09

Freshness

2026-03-05 23:08:02.667514

Geography

Indian Ocean, specifically the South-Western Indian and Southern Oceans along repeated ship lines.