North Pacific Ocean Carbon Chemistry Profiles from Cruise KH03-2, 2003

Chemical and physical profile data were collected from the Hakuho Maru in the North Pacific Ocean from 2003-09 30 to 2003-10-17 during cruise KH03-2. The data include dissolved inorganic carbon, alkalinity, pH, nutrients, and temperature, collected using CTD, Coulometer, and bottle instruments. These data were collected by researchers from AIST and the University of Tokyo as part of the PACIFICA international carbon synthesis project.

Use Cases

• Modeling ocean acidification trends based on dissolved inorganic carbon and pH measurements
• Analyzing nutrient cycling relationships based on nitrate, phosphate, and silicate data
• Studying water mass properties and mixing based on concurrent temperature, salinity, and pressure profiles
• Calibrating regional carbon models based on discrete alkalinity and DIC samples

Strengths

• Data includes multiple co-located chemical and physical parameters (e.g., DIC, alkalinity, nutrients, temperature, salinity)
• Collected during a defined research cruise (KH03-2) with specified instruments (CTD, Coulometer)
• Part of an international collaborative synthesis project (PACIFICA) supported by PICES

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Data is from a single cruise in 2003; 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 for DIC measurement, and bottle instruments

Time Range

2003-09-30 to 2003-10-17

Freshness

Last updated 2026-03-05 23:26:38.927163; freshness should be verified

Geography

North Pacific Ocean