NCEI 0157056: Ocean Surface Carbon Dioxide and Meteorological Measurements

NCEI Accession 0157056 contains surface underway measurements of carbon dioxide partial pressure and related variables from the RYOFU MARU research vessel. Data were collected in the Bismarck Sea, East China Sea, Japan Sea, and North and South Pacific Ocean between November 1989 and March 1992. The dataset includes barometric pressure, sea surface temperature, and the partial pressure of carbon dioxide in both the atmosphere and surface water.

Use Cases

• Analyzing spatial and temporal trends in surface ocean pCO2 based on cruise track data.
• Calculating air-sea CO2 flux using concurrent atmospheric and water pCO2 measurements.
• Correlating sea surface temperature with carbon dioxide solubility across different ocean basins.
• Validating regional ocean carbon cycle models with in-situ underway observations.

Strengths

• Data covers a multi-year time series from 1989-11-17 to 1992-03-09 across ten distinct research cruises.
• Includes direct, concurrent measurements of atmospheric and aquatic carbon dioxide partial pressure, a key variable for flux calculations.
• Geographic coverage spans multiple major basins of the western Pacific Ocean.

Limitations

• Key metadata such as row count, file size, and specific column names are not provided by any source.
• Conflicting 'last updated' dates (1992-03-09 vs. 2026-03-06) suggest potential metadata freshness issues.
• The dataset's license and detailed instrument calibration information are not specified.

Provenance

Source

Takashi Midorikawa of the Japan Meteorological Agency; Pollutants Chemical Analysis Center; Marine/Climate and Marine Department.

Collection Method

Surface underway observations collected using a Carbon dioxide (CO2) gas analyzer and Shower head chamber equilibrator aboard the RYOFU MARU.

Time Range

1989-11-17 to 1992-03-09

Freshness

2026-03-06 00:03:59.853087

Geography

Bismarck Sea, East China Sea (Tung Hai), Japan Sea, North Pacific Ocean, Philippine Sea, South Pacific Ocean