Historical Upper-Ocean Temperature Profiles from L/S Chesapeake

Mechanical bathythermograph (MBT) data from the L/S CHESAPEAKE vessel in the North Atlantic Ocean, processed by the National Oceanographic Data Center (NODC). The dataset contains temperature-depth profile pairs recorded at uniform 5-meter intervals, capturing the thermal structure of the ocean's upper 285 meters. Observations span from April 23, 1955, to September 30, 1968.

Use Cases

• Analyzing seasonal and interannual temperature variability in the upper North Atlantic Ocean using depth-temperature pairs.
• Studying the vertical thermal structure of the ocean's mixed layer up to 285 meters depth.
• Correlating historical sea surface and subsurface temperature data with cruise, date, position, and time metadata.
• Providing a baseline for climate model validation of mid-20th century ocean conditions.

Strengths

• Data is processed to a standardized NODC format (C128), ensuring consistent structure.
• Provides a 13-year time series (1955-1968) of ocean observations from a single vessel.
• Records temperature at uniform 5-meter depth intervals, facilitating vertical profile analysis.

Limitations

• Key metadata such as row count, column names, and dataset size are unknown across all sources.
• Instrument limitation restricts observations to a maximum depth of approximately 285 meters, excluding deeper ocean layers.
• Sources conflict on the 'last updated' date, with one showing 2026-04-01 and another showing the final observation date of 1968-09-30.

Provenance

Source

NOAA National Centers for Environmental Information (NCEI), originating from NODC.

Collection Method

Collected using Mechanical Bathythermograph (MBT) instruments aboard the L/S CHESAPEAKE and processed to NODC standard C128 format.

Time Range

1955-04-23 to 1968-09-30

Freshness

2026-04-01 15:07:47.025875

Geography

North Atlantic Ocean