CLIVAR I09S 2012: Southern Ocean Hydrographic Profiles

Southern Ocean and Indian Ocean data from the 2012 CLIVAR I09S cruise aboard the Aurora Australis includes discrete and profile measurements of dissolved oxygen, nutrients, salinity, and temperature. The dataset supports the International CLIVAR program's goal of quantifying changes in ocean heat, freshwater, and carbon storage. Measurements were collected using CTD, bottle, and PAR sensor instruments between January 5 and February 12, 2012.

Use Cases

• Analyzing water column structure based on CTD profiles of salinity, temperature, and pressure.
• Studying nutrient cycles (nitrate, phosphate, silicate) and biological activity via fluorescence measurements.
• Quantifying changes in ocean carbon storage and transport as part of the CLIVAR repeat hydrography program.
• Calibrating satellite-derived ocean color data with in-situ photosynthetic active radiation (PAR) measurements.

Strengths

• Data is part of a systematic global re-occupation program (CLIVAR), ensuring methodological consistency for time-series analysis.
• Includes a specific set of core oceanographic variables (e.g., dissolved oxygen, nutrients, PAR) collected with standard instruments (CTD, bottle).
• Cross-platform presence on NOAA and NASA portals indicates vetting and importance for the research community.

Limitations

• Column names and exact data structure are not provided in the available metadata.
• Conflicting author affiliations: one source lists Mark Rosenberg from the Antarctic Climate & Ecosystems CRC, another from the University of Tasmania.
• Key metadata such as row count, file size, and specific license are not available.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce; Commonwealth Scientific and Industrial Research Organization (CSIRO); Antarctic Climate & Ecosystems Cooperative Research Centre/University of Tasmania.

Collection Method

Discrete sample and profile observations collected from the R/V Aurora Australis using CTD, PAR Sensor, and bottle instruments.

Time Range

2012-01-05 to 2012-02-12

Freshness

2026-03-05 23:42:56.593266

Geography

Indian Ocean and Southern Oceans (specifically > 60 degrees South)