North Pacific Ocean Carbon Chemistry Profiles from Cruise HO00-2, June-July 2000

PACIFICA project data from the Hokusei Maru cruise in June-July 2000 measures dissolved inorganic carbon, pH, and nutrients in the North Pacific Ocean. The dataset includes 12 chemical and physical parameters, such as alkalinity, ammonium, nitrate, phosphate, silicate, dissolved oxygen, salinity, and temperature. These profile and discrete sample observations were collected by JAMSTEC and the Mutsu Institute for Oceanography using CTD and Coulometer instruments.

Use Cases

• Modeling ocean acidification impacts based on dissolved inorganic carbon and pH measurements
• Analyzing nutrient cycling and primary productivity based on nitrate, phosphate, and silicate concentrations
• Studying water mass properties and ocean circulation based on concurrent salinity and temperature profiles
• Calibrating biogeochemical models using the co-located alkalinity and dissolved oxygen data

Strengths

• Includes 12 key ocean carbon and nutrient parameters measured concurrently
• Data collected during a dedicated research cruise (HO00-2) with documented instruments (CTD, Coulometer)
• Part of the international PACIFICA synthesis project for Pacific Ocean interior carbon data

Limitations

• Column-level documentation and sample data are unavailable, requiring field semantics to be inferred after download
• Row count and dataset scale are unknown, which may limit suitability assessment for large-scale modeling
• Data is from a single cruise in 2000; temporal coverage is limited to a two-week period

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

2000-06-21 to 2000-07 05

Freshness

Last updated 2026-03-05 22:44:51.633815; freshness should be verified

Geography

North Pacific Ocean