NORPAX Cruises: Carbonate Chemistry of the North Pacific

Data from 1979-04-01 to 1982-06-30 includes dissolved inorganic carbon, total alkalinity, pH, temperature, and salinity collected during NOAA Ship Miller Freeman cruises. Measurements were taken using CTD, Niskin bottles, carbon dioxide gas analyzers, and pH meters. The dataset is part of the Carbonate Chemistry of the North Pacific (NDP-029) collection led by Oregon State University.

Use Cases

• [Analyzing long-term ocean acidification trends] based on [dissolved inorganic carbon and pH measurements]
• [Modeling carbon flux in the North Pacific] based on [total alkalinity and temperature profiles]
• [Calibrating modern ocean carbon sensors] based on [historical discrete sample data from CTD and Niskin bottles]

Strengths

• [Multi-year temporal coverage] from [April 1979 to June 1982]
• [Specific instrumentation documented] including [CTD, Niskin bottles, carbon dioxide gas analyzers, and pH meters]
• [Cross-platform presence] on [Data.gov and NASA Earthdata] indicates established importance

Limitations

• [Column names and row counts are unknown] across all source platforms
• [Metadata completeness is low] with [license, author, and exact size unspecified]
• [Conflicting freshness information] between [a 2026 update date on Data.gov and a 1982 date on NASA Earthdata]

Provenance

Source

Chen-Tung A. Chen of Oregon State University; College of Oceanic and Atmospheric Sciences

Collection Method

Discrete sample and profile observations from shipboard instruments

Time Range

1979-04-01 to 1982-06-30

Freshness

2026-03-01 17:53:48.144730

Geography

Pacific Ocean