North Pacific Ocean Carbon and Water Chemistry Profiles from Ryofu Maru II, June-July 2001

PACIFICA_49RY20010619 data includes 22 variables such as dissolved inorganic carbon, pH, alkalinity, and nutrients collected from the Ryofu Maru II research vessel in the North Pacific Ocean from 2001-06-19 to 2001-07-21. The data were gathered using CTD, Coulometer, and bottle instruments during cruise RF00-06. Sukeyoshi Takatani of the Japan Meteorological Agency and Masao Ishii of the Meteorological Research Institute collected these measurements as part of the PACIFICA international ocean carbon synthesis project.

Use Cases

• Modeling ocean acidification based on pH and dissolved inorganic carbon measurements.
• Studying marine nutrient cycles based on nitrate, phosphate, and silicate concentrations.
• Analyzing water mass properties based on salinity, temperature, and sigma-theta profiles.
• Investigating anthropogenic tracer distribution based on Chlorofluorocarbon (CFC-11, CFC 12) data.
• Assessing biological productivity based on Chlorophyll a and Phaeophytin measurements.

Strengths

• Includes 22 distinct chemical, biological, and physical variables per observation.
• Data collected during a dedicated month-long research cruise (2001-06-19 to 2001-07-21).
• Part of the international PACIFICA project for Pacific Ocean interior carbon synthesis.

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.

Provenance

Source

Japan Meteorological Agency; Pollutants Chemical Analysis Center; Meteorological Research Institute

Collection Method

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

Time Range

2001-06 19 to 2001-07-21

Freshness

Last updated 2026-03-05 23:13:57.462784; freshness should be verified.

Geography

North Pacific Ocean