OISO-18 Cruise: Indian Ocean Carbon and Hydrographic Profile Data, 2009-2010

Discrete profile measurements of dissolved inorganic carbon, total alkalinity, temperature, salinity, dissolved oxygen, and nutrients were collected during the R/V Marion Dufresne cruise OISO-18 in the Indian Ocean from 2009-12-19 to 2020-01 24. The data were collected by researchers from Sorbonne University as part of the CLIVAR_OISO18 dataset. This cruise was part of the International CLIVAR Global Ocean Carbon and Repeat Hydrography Program, which systematically re-occupies hydrographic sections to quantify changes in heat, freshwater, and carbon dioxide storage and transport.

Use Cases

• Modeling ocean carbon uptake and acidification based on dissolved inorganic carbon and total alkalinity measurements.
• Analyzing water mass properties and circulation based on concurrent temperature, salinity, and oxygen profiles.
• Studying biogeochemical cycles and nutrient distributions in the Indian Ocean based on nutrient data.
• Calibrating and validating satellite-derived ocean surface CO2 estimates based on in-situ carbon system measurements.

Strengths

• Data collection is part of a systematic, global repeat hydrography program (CLIVAR), suggesting standardized methodology.
• Includes multiple co-located parameters (carbon, nutrients, physical properties) for integrated analysis.
• The description specifies a precise time range (2009-12-19 to 2010-01-24) and geographic focus (Indian Ocean).

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Data may reflect geographic and temporal bias inherent to a single research cruise.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Discrete sample and profile observations collected from a research vessel.

Time Range

2009-12-19 to 2010-01-24

Freshness

Last updated 2026 03 05 23:11:58.592047; freshness should be verified.

Geography

Indian Ocean