Ocean Carbon and Chemistry Profiles from the Philippine Sea, October 1998

From 1998-10-07 to 1998-10-15, discrete water samples and profiles were collected aboard the SHUMPU MARU in the Philippine Sea. The data includes over 20 chemical and physical variables such as dissolved inorganic carbon, pH, alkalinity, nutrients, and chlorofluorocarbons. It was collected by researchers from the Japan Meteorological Agency and the Meteorological Research Institute 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 cycling and primary productivity based on nitrate, phosphate, silicate, and chlorophyll a data.
• Tracing water mass age and circulation using chlorofluorocarbon (CFC-11, CFC-12) concentrations.
• Calibrating biogeochemical models with co-located measurements of alkalinity, dissolved oxygen, and hydrostatic pressure.

Strengths

• Includes a wide range of co-located chemical, biological, and physical parameters (over 20 variables).
• Data is part of the international PACIFICA synthesis project for Pacific Ocean interior carbon.
• Specific collection dates (1998-10-07 to 1998-10-15) and geographic area (Philippine Sea) are documented.

Limitations

• Row count and file size 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 in 1998, 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

1998-10-07 to 1998-10-15

Freshness

Last updated 2026-03-06 00:10:31.911049; freshness should be verified.

Geography

Philippine Sea