Historical Ocean Temperature Profiles from Pursuit Cruises

7600043 records temperature-depth pairs from mechanical bathythermograph (MBT) casts taken during the PURSUIT cruises. Data spans from 1954-01-09 to 1960-04-14 across the North Atlantic and North Pacific Oceans, processed by the National Oceanographic Data Center (NODC) into the standard C128 format. Each observation includes cruise metadata, date, position, and time, with temperature recorded at uniform 5-meter depth intervals down to a maximum of approximately 285 meters.

Use Cases

• Analyzing seasonal and interannual temperature variability in the upper 285 meters of the North Atlantic and Pacific.
• Calibrating or validating ocean model simulations of mid-20th century upper-ocean heat content.
• Studying the spatial distribution of near-surface thermal gradients using the reported position and temperature-depth pairs.
• Investigating cruise-specific oceanographic conditions from the documented cruise information, date, and time.

Strengths

• Data is processed to a known standard format (NODC C128), ensuring structural consistency for analysis.
• Provides a multi-year time series from 1954 to 1960, capturing mid-20th century ocean conditions.
• Includes essential metadata (cruise, date, position, time) for each temperature-depth profile, enabling spatiotemporal analysis.

Limitations

• The maximum observation depth of ~285 meters limits analysis to the upper ocean only, excluding deeper thermal structure.
• Key quantitative details like total row count, file size, and specific column names are not provided by any source.
• Conflicting 'last updated' dates exist between platforms (2026-03-05 on data.gov vs. 1960-04 14 on NASA Earthdata), obscuring provenance timeline.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Mechanical bathythermograph (MBT) instrument casts processed by NODC to the C128 format.

Time Range

1954-01-09 to 1960-04-14

Freshness

2026-03-05 22:57:22.436222

Geography

North Atlantic Ocean and North Pacific Ocean