AJAX Expedition: CTD/STD Oceanographic Station Data

Physical-chemical oceanographic data were collected from two research cruises in the Norwegian Sea and the Southern Ocean/South Atlantic. Measurements likely include temperature, salinity, dissolved oxygen, nutrients, and meteorological conditions at discrete depth levels. The data have been processed into standard NODC formats (C100 and F022) from the original SD2 format.

Use Cases

• Analyzing water column stratification based on temperature and salinity profiles.
• Studying nutrient distributions (phosphate, silicate, nitrate) in the Southern Ocean.
• Calibrating ocean models using historical CTD/STD station data.
• Investigating air-sea interaction using concurrent meteorological and oceanographic measurements.

Strengths

• Covers two distinct oceanographic expeditions over a multi-year period (1982-1984).
• Processed to established NODC standard formats (C100, F022), enhancing interoperability.
• Includes both directly measured parameters and computed values like density and sound velocity.

Limitations

• Specific column names, row counts, and file sizes are not provided in the available metadata.
• A small proportion (about 5%) of the data originates from electronic CTD/STD recorders, with the majority from multi-bottle Nansen casts.
• Conflicting 'last updated' dates (1984 vs 2026) suggest potential metadata inconsistency across platforms.

Provenance

Source

Scripps Institute of Oceanography (SIO), submitted by Arnold Mantyla.

Collection Method

Collected via electronic CTD/STD recorders and multi-bottle Nansen casts from the CSS HUDSON and R/V KNORR.

Time Range

1982-02-14 to 1984-02-19

Freshness

2026-03-05 23:18:29.565705

Geography

Norwegian Sea, North Atlantic Ocean, Southern Ocean, South Atlantic Ocean.