Historical Ocean Temperature Profiles from Mechanical Bathythermographs

Mechanical bathythermograph (MBT) data from the EPCE project in the North Pacific Ocean provides temperature-depth profiles for the upper ocean layers. The dataset contains observations recorded at uniform 5-meter depth intervals up to approximately 285 meters, processed by the NODC into the standard C128 format. It covers a seven-year period from June 1947 to October 1954.

Use Cases

• Analyzing the thermal structure of the upper ocean (using temperature-depth value pairs).
• Studying historical ocean temperature variability in the North Pacific (using cruise date, position, and time data).
• Calibrating or validating oceanographic models for the post-WWII era (using standardized C128 format temperature profiles).

Strengths

• Data is processed to a known, standardized format (NODC C128).
• Provides a multi-year historical record covering 1947-1954.
• Observations include precise metadata such as cruise information, date, position, and time.

Limitations

• Instrument limitation restricts data to the upper ocean layers (maximum depth ~285 m).
• Key quantitative details like row count, file size, and specific column names are unavailable across all sources.

Provenance

Source

NOAA NCEI (National Centers for Environmental Information).

Collection Method

Data gathered using mechanical bathythermograph (MBT) instruments and processed by NODC.

Time Range

1947-06-01 to 1954-10-03

Freshness

2026-03-05 23:21:37.317061

Geography

North Pacific Ocean.