North Pacific Ocean Carbon Chemistry Profiles from Soyo Maru, April 1998

PACIFICA_49SO19980414 includes discrete sample and profile data for dissolved inorganic carbon, alkalinity, and related oceanographic variables. The data were collected aboard the Soyo Maru in the North Pacific Ocean from April 14 to April 29, 1998, using CTD and bottle instruments. Katsuyuki Sasaki and Tsuneo Ono of the National Research Institute of Fisheries Science collected these measurements as part of the international PACIFICA project.

Use Cases

• Modeling ocean carbon sequestration based on dissolved inorganic carbon and alkalinity measurements.
• Analyzing ocean circulation and water mass age using chlorofluorocarbon (CFC-11, CFC-12) tracers.
• Studying nutrient cycles in the North Pacific based on nitrate+nitrite, phosphate, and silicate data.
• Calibrating and validating biogeochemical ocean models using in-situ CTD profile data.

Strengths

• Data covers a specific 15-day research cruise, providing a focused temporal snapshot.
• Includes multiple key carbon cycle and oceanographic parameters measured with standard instruments (CTD, Coulometer).
• Collected as part of the international PACIFICA project, suggesting a standardized data synthesis effort.

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 may reflect geographic and temporal bias inherent to a single cruise in April 1998.

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.

Time Range

1998-04-14 to 1998-04-29

Freshness

Last updated 2026-03-06 00:17:29.869179; freshness should be verified.

Geography

North Pacific Ocean