OISO-19 Cruise: Indian Ocean Surface Carbon Measurements

The OISO-19 cruise dataset provides surface underway measurements of dissolved inorganic carbon, total alkalinity, temperature, and salinity from the R/V Marion-Dufresne in the Indian Ocean from January to February 2011. This data is part of the long-term OISO program, initiated in 1998, which monitors carbon dioxide and related parameters in the South-Western Indian and Southern Oceans. The measurements are regularly incorporated into international synthesis projects like SOCAT and GLODAP.

Use Cases

• Calculating ocean acidification trends based on DIC and alkalinity measurements.
• Validating and contributing to global carbon data syntheses like SOCAT and GLODAP.
• Analyzing spatial patterns of surface carbon parameters in the Indian Ocean.
• Studying the relationship between physical parameters (temperature, salinity) and carbon chemistry.

Strengths

• Data is part of a long-term monitoring program (OISO) initiated in 1998, providing context for time-series analysis.
• Coverage is from a specific, well-documented research cruise (EXPOCODE 35MV20110115) with a precise time range (2011-01-15 to 2011-02-18).
• Dataset is integrated into major international data synthesis projects (SOCAT, GLODAP), indicating quality and utility.

Limitations

• Column names and data structure are unknown, hindering direct analysis.
• Row count and dataset size are unspecified across all sources.
• Metadata shows conflicting last updated dates (2011-02-18 and 2026-03-06), suggesting potential inconsistency in record maintenance.

Provenance

Source

NOAA_NCEI

Collection Method

Surface underway measurements collected during the R/V Marion-Dufresne OISO-19 cruise.

Time Range

2011-01-15 to 2011-02-18

Freshness

Last updated dates conflict: one source indicates 2011-02-18, another indicates 2026-03-06.

Geography

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