Pacific Ocean Carbon and Chemistry Profiles from the Ryofu Maru II, July 2005

July 2005 data from the Ryofu Maru II research vessel in the North Pacific Ocean, Philippine Sea, and South Pacific Ocean. The dataset includes discrete sample and profile measurements for dissolved inorganic carbon, pH, alkalinity, nutrients, chlorophyll, and other oceanographic variables. It was collected by researchers from the Japan Meteorological Agency and Meteorological Research Institute as part of the PACIFICA project.

Use Cases

• Modeling ocean acidification trends based on pH and alkalinity measurements.
• Analyzing carbon sequestration potential based on dissolved inorganic and organic carbon data.
• Studying marine nutrient cycles based on nitrate, phosphate, and silicate concentrations.
• Investigating phytoplankton biomass distribution based on chlorophyll a and phaeophytin data.
• Calibrating ocean carbon models using hydrographic data like salinity, temperature, and pressure.

Strengths

• Includes over 20 distinct chemical, biological, and physical parameters for a holistic oceanographic view.
• Data collected during a dedicated research cruise (PACIFICA_49RY20050708) over a 21-day period in July 2005.
• Part of the international PACIFICA synthesis project for Pacific Ocean interior carbon data.

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 is from a single cruise in 2005; temporal and spatial coverage is limited.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Discrete sample and profile observations using CTD, Coulometer, and bottle instruments.

Time Range

2005-07 08 to 2005-07-28

Freshness

Last updated 2026-03-05 22:46:12.372109; freshness should be verified.

Geography

North Pacific Ocean, Philippine Sea, South Pacific Ocean