PACIFICA: North Pacific Ocean Carbon and Chemistry Profiles from June 1999

North Pacific Ocean chemical and physical data collected from the Hokusei Maru vessel between 1999-06-01 and 1999-06-15. The dataset includes measurements of dissolved inorganic carbon, alkalinity, pH, nutrients, dissolved oxygen, temperature, and salinity from discrete samples and CTD profiles. These data were collected by Shuichi Watanabe of JAMSTEC as part of the international PACIFICA project for synthesizing Pacific Ocean interior carbon data.

Use Cases

• Modeling ocean acidification dynamics based on pH and dissolved inorganic carbon measurements.
• Analyzing nutrient cycling relationships based on nitrate, phosphate, and silicate data.
• Calibrating biogeochemical models using concurrent temperature, salinity, and oxygen profiles.
• Studying carbon system variability in the North Pacific based on alkalinity and DIC observations.

Strengths

• Includes 12 key oceanographic parameters, such as DIC, alkalinity, pH, and multiple nutrients.
• Data collected during a defined 15-day cruise (HO99-1) in June 1999.
• Part of the international PACIFICA project for standardized Pacific Ocean carbon synthesis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data is from a single, brief temporal snapshot (June 1999).

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 sampling.

Time Range

1999-06-01 to 1999-06-15

Freshness

Last updated 2026-03 05 22:44:59.316253; freshness should be verified.

Geography

North Pacific Ocean