Historical Upper Ocean Temperature Profiles from the LAMSON Expedition

Mechanical bathythermograph (MBT) data collected by the LAMSON vessel in the North and South Pacific Ocean, including the Solomon Sea, during World War II. The dataset contains temperature-depth profile pairs recorded at uniform 5-meter intervals, processed by the National Oceanographic Data Center (NODC) into its standard C128 format. It captures the thermal structure of the ocean's upper layers from October 1941 to November 1944.

Use Cases

• Analyzing temperature variation with depth (temperature-depth pairs) in the upper 285 meters of the Pacific Ocean.
• Studying spatial patterns of sea surface temperature and subsurface thermal layers using reported position data (latitude/longitude).
• Investigating temporal changes in ocean heat content during the early 1940s using the date and time for each observation.
• Correlating cruise information and observation timing with historical naval or research activities.
• Calibrating or validating models of historical ocean conditions for the Pacific region.

Strengths

• Data is processed to a consistent standard format (NODC C128), ensuring structured temperature-depth pairs.
• Provides a multi-year time series from 1941 to 1944, offering a snapshot of ocean conditions during a specific historical period.
• Records observations at a high vertical resolution, with temperature data at uniform 5-meter depth intervals.
• Cross-platform presence on U.S. government data portals signals its curated status and archival importance.

Limitations

• Instrument limitation: MBT data is only useful for studying the upper ocean, with a maximum observation depth of approximately 285 meters.
• Key metadata conflicts: Row count, column names, file size, and license information are not provided or are listed as unknown across all sources.
• Data freshness is unclear; one platform lists a 2026 update date while another lists the end date of the data collection (1944).

Provenance

Source

NOAA National Centers for Environmental Information (NCEI), originating from the LAMSON vessel.

Collection Method

Collected using mechanical bathythermograph (MBT) instruments and processed by NODC to its C128 standard format.

Time Range

1941-10-15 to 1944-11-28

Freshness

2026-04-01 14:58:37.947226

Geography

North Pacific Ocean, Solomon Sea, South Pacific Ocean