CLIVAR S04P: Southern Ocean Hydrographic and Carbon Data from 2011

Discrete sample data from the R/V Nathaniel B. Palmer cruise in the Southern Ocean from 2011-02-19 to 2011-04-23. The dataset includes measurements for 26 parameters such as chlorofluorocarbons, dissolved inorganic carbon, salinity, and nutrients. Data were collected by researchers from NOAA PMEL, Scripps Institution of Oceanography, and RSMAS as part of the CLIVAR Repeat Hydrography Program.

Use Cases

• Modeling ocean carbon uptake and storage based on dissolved inorganic carbon and total alkalinity measurements.
• Tracing water mass age and circulation using chlorofluorocarbon (CFC-11, CFC-12, CFC-113) and sulfur hexafluoride (SF6) data.
• Studying biogeochemical cycles in polar regions based on nitrate, phosphate, silicate, and dissolved organic carbon levels.
• Calibrating and validating oceanographic models with high-precision hydrographic data like potential temperature and salinity.

Strengths

• Includes 26 distinct chemical and physical parameters per sample, enabling multi-variable analysis.
• Data collected on a dedicated CLIVAR repeat hydrography section (S04P) following a standardized global program.
• Instruments listed include an alkalinity titrator, CTD, and coulometer, which suggest precise measurement methods.

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 is from a single cruise in 2011; temporal coverage is limited to a two-month period.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Discrete water sample collection from CTD casts and subsequent laboratory analysis.

Time Range

2011-02-19 to 2011-04-23

Freshness

Last updated 2026-03-06 00:18:27.541657; freshness should be verified.

Geography

Southern Ocean along the CLIVAR Repeat Hydrography Section S04P