CLIVAR JR177: Ocean Carbon and Hydrography Measurements from the Southern Ocean

NCEI Accession 0157452 contains surface, profile, and discrete sample data from the RRS James Clark Ross cruise JR177 in the South Atlantic and Southern Oceans from December 31, 2007 to February 17, 2008. The dataset includes measurements of carbon dioxide partial pressure, dissolved inorganic carbon, total alkalinity, salinity, and temperature, collected as part of the International CLIVAR Global Ocean Carbon and Repeat Hydrography Program. These observations support the quantification of changes in ocean carbon storage and transport.

Use Cases

• Calculating air-sea CO2 flux based on partial pressure differences.
• Assessing ocean acidification trends using dissolved inorganic carbon and alkalinity measurements.
• Calibrating and validating biogeochemical ocean models with hydrographic profile data.
• Studying water mass properties and circulation in the Southern Ocean using temperature and salinity profiles.

Strengths

• Data collection is part of the systematic International CLIVAR Repeat Hydrography Program, ensuring methodological consistency.
• Includes multiple complementary measurement types: surface underway, discrete bottle samples, and CTD profiles.
• Covers a critical region for global carbon and heat uptake: the Southern Ocean (>60 degrees South).

Limitations

• Key metadata such as row count, file size, and specific column names are not provided on any platform.
• Conflicting 'last updated' timestamps (2008-02-17 vs. 2026-03-05) create uncertainty about metadata maintenance.
• The dataset's license is unspecified across all sources.

Provenance

Source

Elizabeth Jones, University of East Anglia School of Environmental Sciences, collected for the CLIVAR_JR177_2007 project.

Collection Method

Data collected using barometric pressure sensor, CTD, carbon dioxide gas analyzer, and bottle samples from the RRS James Clark Ross.

Time Range

2007-12-31 to 2008-02-17

Freshness

2026-03-05 23:51:18.560396

Geography

South Atlantic Ocean and Southern Oceans (> 60 degrees South)