Historical Ocean Temperature Profiles from Mechanical Bathythermograph

Mechanical bathythermograph (MBT) data from the NOAA vessel CAYUSE provides temperature-depth profiles for the upper ocean layers. The dataset, processed by the National Oceanographic Data Center (NODC) into the standard C128 format, captures observations from a specific cruise in the North Pacific Ocean over four days in late May and early June 1971. Each profile consists of temperature values recorded at uniform 5-meter depth intervals, paired with cruise metadata, date, position, and time.

Use Cases

• Analyzing the vertical thermal structure of the upper ocean (using temperature-depth value pairs).
• Studying short-term oceanic temperature variability in the North Pacific (using date, time, and position columns).
• Validating or calibrating historical ocean model outputs for the 1970s (using standardized C128 format temperature profiles).
• Investigating cruise-specific oceanographic conditions (using reported cruise information).

Strengths

• Data is processed to a known, documented standard (NODC C128 format).
• Provides precise temporal and spatial context for each observation (specific cruise from 1971-05-30 to 1971-06-02 in the North Pacific Ocean).
• Temperature measurements are recorded at a consistent, fine vertical resolution (uniform 5 m depth intervals).

Limitations

• The dataset's scope is limited to the upper ocean, with a maximum observation depth of approximately 285 meters.
• Key descriptive metadata such as column names, row count, file size, and license are unavailable from all provided sources.
• The temporal coverage is very brief, spanning only four days from a single cruise in 1971.

Provenance

Source

NOAA National Centers for Environmental Information (NCEI).

Collection Method

Collected via mechanical bathythermograph (MBT) instrument and processed by the National Oceanographic Data Center (NODC).

Time Range

1971-05-30 to 1971-06-02

Freshness

2026-04-01 14:54:53.595307

Geography

North Pacific Ocean.