Southern Ocean CTD and Nutrient Profiles from Nathaniel B. Palmer 1994

Southern Ocean data from the Nathaniel B. Palmer research vessel includes CTD profiles of temperature, salinity, and oxygen, plus bottle cast measurements for nutrients like silicate, phosphate, nitrate, and total CO2. The dataset covers a six-week expedition from February 14 to March 31, 1994, and was submitted by the Lamont-Doherty Earth Observatory of Columbia University. It represents a focused snapshot of physical and biogeochemical conditions in waters south of 60 degrees South.

Use Cases

• Analyzing vertical profiles of temperature and salinity to study water mass structure in the Southern Ocean.
• Correlating nutrient concentration profiles (silicate, phosphate, nitrate) with physical CTD data to assess biogeochemical cycles.
• Examining meteorological parameters like barometric pressure and wind direction alongside oceanographic data for air-sea interaction studies.
• Using oxygen concentration data from both CTD and bottle casts to validate sensor measurements and study oxygen dynamics.

Strengths

• Includes multiple complementary data types: CTD profiles, discrete bottle chemistry, and surface meteorological observations.
• Provides a temporally focused and geographically specific snapshot from a dedicated research expedition over a 46-day period.

Limitations

• Core metadata such as row count, column names, and file size are unknown across all platforms.
• Conflicting last updated dates: one source lists 2026-03-06, another lists 1994-03 31, creating uncertainty about recent maintenance.

Provenance

Source

Lamont-Doherty Earth Observatory of Columbia University, submitted via NOAA NCEI.

Collection Method

Collected from CTD, bottle casts, and meteorological instruments aboard the R/V Nathaniel B. Palmer.

Time Range

1994-02 14 to 1994-03 31

Freshness

2026-03-06 00:10:27.615931

Geography

Southern Oceans, specifically waters south of 60 degrees South latitude.