OISO-04 Cruise: Surface Ocean Carbon and Hydrography

The OISO-04 cruise collected surface measurements from January 15 to February 7, 2000, in the Indian and Southern Oceans. This dataset includes dissolved inorganic carbon, total alkalinity, temperature, and salinity, supporting the OISO program's long-term monitoring of ocean carbon parameters. Data from this program are regularly integrated into international synthesis projects like SOCAT and GLODAP.

Use Cases

• Calibrating ocean carbon models based on direct measurements of DIC and TALK.
• Assessing ocean acidification trends in the Southern Ocean using time-series alkalinity data.
• Validating satellite-derived sea surface salinity and temperature products with in-situ cruise data.
• Contributing to global carbon budget syntheses via integration into SOCAT and GLODAP.

Strengths

• Data is part of a long-term monitoring program (OISO) initiated in 1998, providing temporal context.
• Coverage includes two major ocean basins (Indian and Southern Oceans) over a 24-day period in 2000.
• Data quality is validated through inclusion in major international synthesis projects (SOCAT, GLODAP).

Limitations

• Column names and the exact number of data rows are not specified in the available metadata.
• Conflicting 'last updated' dates exist between platforms (2000-02-07 vs. 2026-03-05), creating uncertainty about metadata maintenance.
• License information is not provided, which may restrict certain uses.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Surface underway measurements collected during the R/V Marion-Dufresne OISO-04 research cruise.

Time Range

2000-01-15 to 2000-02-07

Freshness

2026-03-05 23:46:45.026430

Geography

Indian Ocean and Southern Ocean