Historical Upper-Ocean Temperature Profiles from Mechanical Bathythermographs

North Pacific Ocean temperature-depth profiles collected from various small vessels between December 1944 and March 1946. The data has been processed into the NODC C128 standard format, with each observation containing cruise information, date, position, time, and paired temperature-depth values recorded at uniform 5-meter intervals. These mechanical bathythermograph (MBT) observations are limited to a maximum depth of approximately 285 meters, capturing the thermal structure of the ocean's upper layers.

Use Cases

• Analyzing seasonal thermal structure changes in the upper ocean based on paired temperature-depth values.
• Studying historical oceanographic conditions for climate model validation using the multi-year time series.
• Mapping regional temperature variations in the North Pacific based on reported position data.
• Assessing instrument-specific data characteristics of mechanical bathythermographs (MBTs) due to the standardized C128 format.

Strengths

• Data spans a multi-year period from 1944-12-01 to 1946-03-13, providing a historical time series.
• Standardized processing into the NODC C128 format ensures consistency for temperature-depth profile data.
• Cross-platform presence on datagov and nasa_earthdata signals established archival importance.

Limitations

• Critical metadata is missing, including column names, row count, file size, and license information.
• The maximum observation depth of approximately 285 meters limits analysis to the ocean's upper layers only.
• Platforms disagree on the 'last updated' date (2026 vs. 1946), creating uncertainty about metadata maintenance.

Provenance

Source

NOAA_NCEI

Collection Method

Collected via mechanical bathythermograph (MBT) instruments from various small vessels and processed by NODC.

Time Range

1944-12-01 to 1946-03-13

Freshness

2026-03-05 23:27:46.271573

Geography

North Pacific Ocean