North Pacific Ocean Carbon and Chemistry Profiles from 1992

PACIFICA_49HO19970602 includes chemical and physical profile data collected from the Hokusei Maru research vessel in the North Pacific Ocean from June 20 to July 5, 1992. The data contain measurements for dissolved inorganic carbon, alkalinity, pH, nutrients, and other variables, gathered using CTD, Coulometer, and bottle instruments. Shuichi Watanabe of JAMSTEC; Mutsu Institute for Oceanography collected this data as part of the PACIFICA international ocean carbon synthesis project.

Use Cases

• Modeling ocean acidification impacts based on pH and dissolved inorganic carbon measurements.
• Analyzing nutrient cycles based on nitrate, phosphate, silicate, and ammonium data.
• Studying water mass properties based on concurrent temperature, salinity, and hydrostatic pressure profiles.
• Calibrating biogeochemical models based on a suite of co-located chemical and physical parameters.

Strengths

• Data includes a coordinated suite of 12 key oceanographic variables for carbon cycle studies.
• Measurements were collected during a defined research cruise (HO97-1) over a 16-day period in 1992.
• Project was part of the international PACIFICA synthesis effort 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 1992; 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

1992-06 20 to 1992-07-05

Freshness

Last updated 2026-03-05 23:18:22.903752; freshness should be verified.

Geography

North Pacific Ocean