OISO-11 Cruise: Indian Ocean Surface Carbon Chemistry

From January 6 to February 8, 2004, this dataset contains surface underway measurements of dissolved inorganic carbon, total alkalinity, temperature, and salinity from a research cruise in the Indian Ocean. It is part of the OISO program, initiated in 1998, which collects data on carbon dioxide and associated parameters along repeated ship tracks. The data are regularly included in international synthesis projects like SOCAT and GLODAP.

Use Cases

• Calculating ocean acidification trends based on dissolved inorganic carbon and alkalinity measurements.
• Validating global carbon models using repeated, in-situ surface underway data from the OISO program.
• Assessing biogeochemical processes by analyzing co-measured parameters like nutrients, chlorophyll, and isotopic carbon.
• Contributing to international data synthesis projects (SOCAT, GLODAP) with standardized cruise data.

Strengths

• Data is part of a long-term monitoring program (OISO) initiated in 1998, providing a time-series context.
• Coverage complements the International Ocean Carbon Coordination Project (IOCCP) and is used in major international synthesis efforts.
• The dataset includes multiple co-measured parameters relevant for carbon cycle studies.

Limitations

• Column names and row counts are unknown across all sources, limiting detailed structural understanding.
• Metadata for license, author, and exact data size is unavailable.
• There is a conflict in the 'last updated' metadata between platforms (2006 vs. 2004).

Provenance

Source

NOAA NCEI, from the R/V Marion-Dufresne OISO-11 cruise.

Collection Method

Surface underway measurements collected during a research cruise.

Time Range

2004-01-06 to 2004-02-08

Freshness

Last updated metadata conflicts: one source reports 2026-03-05, another reports 2004-02-08.

Geography

Indian Ocean, specifically South-Western Indian and Southern Oceans.