North Pacific Ocean Carbon Chemistry Profiles from 1998

Discrete sample and profile data collected from the Hokusei Maru research vessel in the North Pacific Ocean from 1998-06-22 to 1998-07-06. The data include dissolved inorganic carbon, pH, alkalinity, temperature, salinity, dissolved oxygen, and nutrients. These data were collected by Shuichi Watanabe of JAMSTEC as part of the PACIFICA international synthesis project.

Use Cases

• Modeling ocean carbon uptake and acidification based on dissolved inorganic carbon and pH measurements.
• Analyzing nutrient dynamics and primary productivity based on nitrate, phosphate, and silicate concentrations.
• Studying water mass properties and ocean circulation using concurrent CTD measurements of temperature, salinity, and pressure.
• Calibrating and validating satellite-derived ocean color products with in-situ nutrient and oxygen profiles.

Strengths

• Data includes multiple co-located chemical and physical parameters (e.g., DIC, pH, nutrients, temperature, salinity) for integrated analysis.
• Data is part of the PACIFICA international synthesis project for Pacific Ocean interior carbon, suggesting a standardized collection protocol.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Data is from a single, short cruise in 1998, limiting temporal and spatial generalizability.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Data collected using CTD, Coulometer for DIC measurement, and bottle samples during cruise HO98-2/PACIFICA_49HO19980622.

Time Range

1998-06-22 to 1998-07-06

Freshness

Last updated 2026-03-05 22:26:31.413638; freshness should be verified.

Geography

North Pacific Ocean