Discrete water sample and profile data measure dissolved inorganic carbon, alkalinity, pH, and associated hydrographic variables. The dataset was collected during the ANTARES 4/CARINA cruise by researchers from the Commonwealth Scientific and Industrial Research Organization and Universite Pierre et Marie Curie. Measurements were taken in the Indian Ocean from January 4 to February 23, 1999.
Use Cases
- Calculate ocean acidification parameters like carbonate saturation state from pH, alkalinity, and dissolved inorganic carbon measurements.
- Analyze relationships between nutrient cycles and carbon chemistry using nitrate and silicate concentrations alongside carbon system variables.
- Model water mass circulation and mixing using potential temperature (theta) and salinity profiles with hydrostatic pressure.
- Assess marine productivity and respiration by examining dissolved oxygen levels in conjunction with nutrient and carbon data.
Strengths
- Includes 11 key chemical and physical variables per observation, such as ALKALINITY, DISSOLVED INORGANIC CARBON, and SALINITY.
- Data is part of the CARINA synthesis project, ensuring internal consistency for biogeochemical investigations.
Limitations
- Temporal coverage is limited to a 51-day cruise in early 1999, providing only a seasonal snapshot.
- Geographic coverage is restricted to the specific cruise track of the MARION DUFRESNE in the Indian Ocean.
- Sample size and row count are unknown, potentially limiting statistical power for some analyses.
Provenance
- Source
- NOAA NCEI Accession 0113760, collected as part of the CARINA/35MF19990104 dataset.
- Collection Method
- Data collected from discrete water samples and CTD profiles using bottle and CTD instruments.
- Time Range
- 1999-01-04 to 1999-02-23
- Freshness
- null
- Geography
- Indian Ocean, along the cruise track of the R/V MARION DUFRESNE.