PACIFICA: North Pacific Ocean Carbon Chemistry Profiles from 2001

Discrete chemical and physical oceanographic data were collected from the Hokusei Maru in the North Pacific Ocean from July 10 to July 21, 2001. The dataset includes measurements for dissolved inorganic carbon, pH, alkalinity, nutrients, dissolved oxygen, temperature, and salinity. These data were collected by Masahide Wakita of Hokkaido University as part of the international PACIFICA project for synthesizing Pacific Ocean interior carbon data.

Use Cases

• Modeling ocean acidification trends based on dissolved inorganic carbon and pH measurements.
• Analyzing nutrient cycling relationships based on nitrate, phosphate, and silicate data.
• Calibrating biogeochemical models using co-located CTD profile data for temperature, salinity, and pressure.
• Studying carbon system parameters like alkalinity for ocean carbon inventory assessments.

Strengths

• Data includes multiple co-located parameters (carbon, nutrients, physical) for integrated analysis.
• Specific collection period (2001-07-10 to 2001-07-21) and vessel (Hokusei Maru) are documented.
• Project affiliation with the international PACIFICA synthesis effort provides context.

Limitations

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

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Discrete sample and profile observations using CTD, Coulometer for DIC measurement, and bottle samples.

Time Range

2001-07-10 to 2001-07-21

Freshness

Last updated 2026-03-05 22:26:03.698675; freshness should be verified.

Geography

North Pacific Ocean