Historical Ocean Temperature Profiles from the Brown Bear Vessel

Mechanical bathythermograph data from the NOAA vessel BROWN BEAR, capturing temperature-depth profiles in northern Pacific and Arctic waters. The dataset contains observations processed to the NODC C128 standard format, spanning a 20-year period from 1947 to 1967. It provides a record of the thermal structure of the ocean's upper layers.

Use Cases

• Analyzing historical temperature gradients in the upper 285 meters of the ocean using paired temperature-depth values.
• Studying seasonal or interannual thermal variability in the Bering Sea, Chukchi Sea, and Gulf of Alaska.
• Validating regional ocean model outputs for the mid-20th century using in-situ profile data.
• Investigating cruise-based spatial patterns of near-surface ocean temperature from reported position and time data.

Strengths

• Data spans a 20-year time range from 1947-07-26 to 1967-02-07, providing a multi-decadal record.
• Temperature data is recorded at uniform 5-meter depth intervals, enabling consistent profile analysis.
• Processed to a documented standard format (NODC C128) by a recognized authority (NODC/NOAA).
• Provides specific geographic coverage across multiple northern seas (Bering Sea, Chukchi Sea, Gulf of Alaska, North Pacific).

Limitations

• Maximum observation depth is approximately 285 meters, limiting analysis to the upper ocean only.
• Core metadata such as row count, column names, and exact file size are unavailable across all platforms.
• The last updated date conflicts between sources (2026-03-06 on Data.gov vs. 1967-02-07 on NASA Earthdata).

Provenance

Source

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

Collection Method

Mechanical bathythermograph (MBT) instrument measurements processed to the NODC standard C128 format.

Time Range

1947-07-26 to 1967-02-07

Freshness

2026-03 06 00:15:42.571667

Geography

Bering Sea, Chukchi Sea, Coastal Waters of Southeast Alaska and British Columbia, Gulf of Alaska, North Pacific Ocean