Surface Ocean Carbon Dioxide Measurements from the Ryofu Maru, 2000-2009

Surface underway measurements of carbon dioxide partial pressure, salinity, and temperature collected from the Ryofu Maru research vessel across multiple Pacific Ocean regions from 2000-01-22 to 2009-07-06. The data were collected by Akira Nakadate and Shu Saito of the Japan Meteorological Agency using carbon dioxide gas analyzers and thermosalinographs. This dataset is part of the VOS_Ryofu_Maru_2000_2009 collection and includes atmospheric and aquatic carbon dioxide measurements alongside barometric pressure, sea surface temperature, and salinity.

Use Cases

• Modeling air-sea carbon dioxide flux based on partial pressure measurements in the atmosphere and water.
• Analyzing temporal trends in ocean carbon uptake based on the decade-long time series.
• Studying regional variability in marine chemistry based on data from the East China Sea, North Pacific, and other specified regions.
• Calibrating or validating satellite-derived sea surface temperature and salinity products based on in-situ measurements.
• Investigating correlations between barometric pressure, sea surface temperature, and carbon dioxide concentrations.

Strengths

• Data collection spans over nine years, from 2000-01-22 to 2009-07-06.
• Covers multiple ocean regions including the East China Sea, North Pacific Ocean, Philippine Sea, Sea of Japan, and South Pacific Ocean.
• Includes directly measured variables for carbon dioxide in both the atmosphere and water, alongside salinity and temperature.

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 may reflect geographic and temporal bias inherent to the specific vessel's cruise track.

Provenance

Source

Japan Meteorological Agency (JMA), collected by Akira Nakadate and Shu Saito; hosted by NOAA.

Collection Method

Surface underway observations using Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator, and thermosalinographs.

Time Range

2000-01 22 to 2009-07-06

Freshness

Last updated 2026-03-05 23:22:50.368544; freshness should be verified.

Geography

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