OISO-26: Surface Ocean Carbon Measurements

From October 8 to October 28, 2016, this dataset provides surface underway measurements of dissolved inorganic carbon (DIC), total alkalinity (TALK), temperature, and salinity from the R/V Marion-Dresne OISO-26 cruise in the Indian Ocean. The data are part of the long-running OISO program, initiated in 1998, which collects parameters to complement the international CO2 observing system. These measurements are regularly included in international synthesis products like SOCAT and GLODAP.

Use Cases

• Calculating ocean acidification metrics based on DIC and TALK measurements.
• Assessing carbon uptake in the South-Western Indian Ocean based on repeated cruise lines.
• Validating and contributing to international synthesis datasets (SOCAT, GLODAP) based on the described parameters.
• Studying seasonal or interannual variability in surface ocean chemistry based on the time-series nature of the OISO program.

Strengths

• Data is part of a long-term observational program initiated in 1998, suggesting consistent methodology.
• Measurements are integrated into international synthesis efforts (SOCAT, GLODAP), indicating peer-reviewed quality.
• Provides specific, high-resolution temporal coverage for a 20-day cruise in October 2016.

Limitations

• Column names and data structure are unknown, limiting immediate analysis.
• Conflicting last updated dates (2016-10-28 vs. 2026-03-05) suggest potential metadata inconsistency.
• No row count, file size, or license information is provided on any platform.

Provenance

Source

NOAA NCEI

Collection Method

Surface underway measurements collected during a dedicated research cruise.

Time Range

2016-10-08 to 2016-10-28

Freshness

The most recent metadata update recorded was 2026-03-05.

Geography

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