Historical Pacific Ocean Chemical Data from Japan Oceanographic Data Center

9000197 records helium, particulate organic carbon, and other chemical measurements from the NW Pacific, Philippine Sea, and East China Sea. The data was collected by the Japan Oceanographic Data Center and submitted by Dr. Osamu Yamada. Measurements span nearly five decades, from 1939 to 1988.

Use Cases

• Analyzing long-term trends in particulate organic carbon concentrations across the NW Pacific.
• Studying historical helium distributions in the Philippine Sea and East China Sea.
• Calibrating modern oceanographic models with baseline chemical data from 1939-1988.
• Researching the chemical properties of ocean stations referenced by numbers L01202-L01219.

Strengths

• Covers a significant 49-year time range from 1939 to 1988.
• Includes data from multiple platforms (HEIYO, KAIYO) and major ocean regions.
• Originates from an authoritative national data center (Japan Oceanographic Data Center).

Limitations

• Specific column names, row counts, and file sizes are not provided by any source.
• Data format and structure are described only as originating from a magnetic tape.
• Sources conflict on the 'last updated' date (1988 vs. 2026), indicating potential metadata inconsistency.

Provenance

Source

Japan Oceanographic Data Center, submitted by Dr. Osamu Yamada to the U.S. National Oceanographic Data Center (NODC).

Collection Method

Annual exchange of chemical data collected from ocean stations, originally stored on magnetic tape W16915.

Time Range

1939 - 1988

Freshness

2026-03-05 22:38:15.910109

Geography

NW Pacific (limit-180), Philippine Sea, East China Sea (Tung Hai).