Near-Japan pCO2 Cruises: Sea Surface Carbon and Physical Data

Surface underway data from the R/V Soyo-Maru covers the Sea of Japan, East China Sea, Sea of Okhotsk, and North Pacific Ocean from December 2015 to July 2017. Measurements include the partial pressure of carbon dioxide in both the atmosphere and seawater, alongside sea surface salinity, temperature, and barometric pressure. The data were collected using a CO2 gas analyzer and equilibrator for the Fisheries Research Agency's near-Japan pCO2 cruises project.

Use Cases

• Calculating air-sea CO2 flux based on simultaneous atmospheric and seawater pCO2 measurements.
• Analyzing ocean acidification trends using seawater pCO2 and sea surface temperature data.
• Studying regional hydrography by correlating sea surface salinity and temperature across the surveyed basins.
• Validating satellite-derived sea surface salinity and temperature products with in-situ shipboard data.

Strengths

• Provides simultaneous measurements of atmospheric and seawater pCO2, enabling direct flux calculations.
• Covers a multi-year time range from 2015-12-03 to 2017-07-23 across four distinct ocean regions.
• Data collection methodology is specified, involving a CO2 gas analyzer and shower head chamber equilibrator.

Limitations

• Key metadata is missing or conflicting: row count, specific column names, and license information are unknown across all sources.
• One source lists a last update date of 2017-07-23, while others list 2026-03-05, creating uncertainty about data currency.

Provenance

Source

Tsuneo Ono of the National Research Institute for Fisheries Science / Fisheries Research Agency.

Collection Method

Surface underway measurements collected from the R/V Soyo-Maru using a CO2 gas analyzer and equilibrator.

Time Range

2015-12-03 to 2017-07-23

Freshness

2026-03-05 23:29:25.817981

Geography

Sea of Japan, East China Sea, Sea of Okhotsk, North Pacific Ocean