OISO-05 Cruise: Indian Ocean Surface Carbon and Hydrography

NCEI Accession 0173435 contains surface underway measurements from the R/V Marion-Dufresne OISO-05 cruise in the Indian Ocean from July 19 to August 14, 2000. The dataset includes dissolved inorganic carbon, total alkalinity, temperature, and salinity, collected as part of the long-term OISO program initiated in 1998. These data contribute to international synthesis projects like SOCAT and GLODAP, supporting research on ocean carbon cycling and acidification.

Use Cases

• Calibrating and validating satellite-derived sea surface pCO2 estimates based on in-situ DIC and alkalinity measurements.
• Assessing ocean acidification trends in the South-Western Indian Ocean using time-series data from repeated cruise lines.
• Studying air-sea CO2 flux dynamics by combining the measured parameters with atmospheric data.
• Contributing to global carbon budget models by providing data for synthesis projects like SOCAT and GLODAP.

Strengths

• Data is part of a long-term monitoring program (OISO) initiated in 1998, indicating a commitment to time-series consistency.
• Regularly included in major international data synthesis projects (SOCAT, GLODAP), suggesting it meets community quality standards.
• Provides specific, complementary coverage in the South-Western Indian and Southern Oceans as part of the IOCCP.

Limitations

• Column names and data structure are not specified in the provided metadata, complicating direct analysis.
• Conflicting 'last updated' dates (2000-08-14 vs. 2026-03-06) create uncertainty about metadata maintenance.
• Key metadata such as row count, file size, and license are not available from any source.

Provenance

Source

National Oceanic and Atmospheric Administration (NOAA), Department of Commerce

Collection Method

Surface underway measurements collected during a dedicated research cruise (R/V Marion-Dufresne).

Time Range

2000-07-19 to 2000-08-14

Freshness

2026-03-06 00:22:54.302592

Geography

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