OISO-14 Cruise: Indian Ocean Surface Carbon Chemistry

OISO-14 cruise data from 2006 provides surface measurements of dissolved inorganic carbon and alkalinity, key for tracking ocean acidification. This dataset is part of a long-term monitoring program initiated in 1998, with its data regularly incorporated into major international synthesis projects like SOCAT and GLODAP. Measurements were collected along repeated ship tracks in the South-Western Indian and Southern Oceans as a complement to the International Ocean Carbon Coordination Project.

Use Cases

• Calibrating and validating ocean carbon models based on direct measurements of DIC and total alkalinity.
• Assessing rates of ocean acidification in the Indian Ocean using time-series data from repeated cruise lines.
• Contributing to global carbon budget syntheses by providing data for the Surface Ocean CO2 Atlas (SOCAT).
• Studying the relationship between surface ocean pCO2, salinity, and temperature in a key oceanic region.

Strengths

• Data is integrated into major international synthesis efforts (SOCAT, GLODAP), indicating quality and interoperability.
• Part of a long-term time-series program (OISO) initiated in 1998, providing context for temporal change.
• Collected via a repeated sampling line, enabling the study of spatial and temporal variability.

Limitations

• Column names and a precise row count are not provided in the available metadata, limiting immediate understanding of data structure.
• Conflicting 'last updated' dates (2006-01-21 vs. 2026-03-05) create uncertainty about metadata maintenance.
• The dataset's license and specific author information are not stated.

Provenance

Source

National Oceanic and Atmospheric Administration (NOAA), National Centers for Environmental Information (NCEI).

Collection Method

Surface underway measurements collected during the R/V Marion-Dufresne OISO-14 research cruise.

Time Range

2006-01-05 to 2006-01-21

Freshness

2026-03-05 22:51:58.297801

Geography

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