Historical Ocean Temperature Profiles from R/V Challenger

Temperature-depth profiles from the mechanical bathythermograph (MBT) instrument deployed by the R/V Challenger. The dataset covers multiple seas and oceans from October 1950 to July 1952, processed into the NODC standard C128 format. Data is structured as pairs of temperature-depth values recorded at uniform 5-meter intervals.

Use Cases

• Analyzing thermal structure of the upper ocean (up to ~285m) across different marine regions.
• Studying seasonal or spatial temperature variations using cruise information, date, position, and time columns.
• Providing historical baseline data for climate change studies in the Arabian Sea, Gulf of Aden, and Red Sea.

Strengths

• Data is processed to a known standard format (NODC C128), ensuring consistency.
• Provides a specific temporal range (1950-10-27 to 1952-07-03) across nine named marine regions.
• Measurement depth intervals are uniform at 5 meters, facilitating comparative analysis.

Limitations

• Key metadata conflicts exist: row count, column names, size, and license are unknown across all platforms.
• Instrument limitation restricts observations to a maximum depth of approximately 285 meters.
• The dataset's age may raise questions about calibration and measurement techniques compared to modern instruments.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Mechanical bathythermograph (MBT) instrument measurements, processed by NODC.

Time Range

1950-10-27 to 1952-07-03

Freshness

2026-04-01 14:57:38.268392

Geography

Arabian Sea, Gulf of Aden, Gulf of Suez, Indian Ocean, Laccadive Sea, Mediterranean Sea, North Pacific Ocean, Red Sea, South China Sea