Mediterranean Sea Temperature Profiles from the COLUMBUS Cruise

Mechanical bathythermograph data captures the thermal structure of the upper ocean layers during a specific cruise. The dataset contains temperature-depth profile pairs recorded at uniform 5-meter intervals down to approximately 285 meters. It was collected by the COLUMBUS vessel and processed by the National Oceanographic Data Center (NODC) into its standard C128 format.

Use Cases

• Analyzing the vertical temperature structure of the upper ocean using paired temperature-depth values.
• Studying short-term thermal variability in the Mediterranean Sea during February 1970 using cruise date and time stamps.
• Mapping the spatial distribution of sea surface and subsurface temperatures using reported position (latitude/longitude) data.
• Investigating the limitations of Mechanical Bathythermograph (MBT) instruments for deep-water analysis based on the 285-meter maximum depth.

Strengths

• Data is processed to a documented standard format (NODC C128), ensuring structural consistency.
• Provides precise temporal coverage for a 13-day cruise from 1970-02-03 to 1970-02-15.
• Temperature measurements are recorded at uniform 5-meter depth intervals, facilitating systematic analysis.

Limitations

• Key metadata such as row count, column names, and exact file size are unavailable across all sources.
• The maximum observation depth of ~285 meters restricts analysis to the ocean's upper thermal layer only.
• A conflict exists in 'last updated' metadata between platforms (2026-04-01 on Data.gov vs. 1970-02-15 on NASA Earthdata).

Provenance

Source

National Oceanic and Atmospheric Administration (NOAA), Department of Commerce, via the National Oceanographic Data Center (NODC).

Collection Method

Collected using a Mechanical Bathythermograph (MBT) instrument from the vessel COLUMBUS and processed to NODC standard format.

Time Range

1970-02-03 to 1970-02-15

Freshness

2026-04-01 15:10:57.580690

Geography

Mediterranean Sea (specific cruise track positions are reported but not detailed in provided metadata).