Surface underway measurements of carbon dioxide partial pressure and related variables collected by the Hakuho Maru research vessel across multiple seas and oceans from 1968-11-16 to 1988-03-23. The data include AIR TEMPERATURE, BAROMETRIC PRESSURE, Partial pressure (or fugacity) of carbon dioxide - atmosphere, Partial pressure (or fugacity) of carbon dioxide - water, SALINITY, SEA SURFACE TEMPERATURE, WIND DIRECTION and WIND SPEED. Data were collected by researchers from Hokkaido University and the Meteorological Research Institute as part of the MRI Hakuho Maru I data set.
Use Cases
- Modeling historical ocean carbon sink variability based on partial pressure of carbon dioxide measurements.
- Analyzing air-sea gas exchange rates based on simultaneous atmospheric and water partial pressure of carbon dioxide data.
- Studying long-term trends in surface ocean chemistry based on salinity and sea surface temperature data collected over two decades.
- Correlating oceanic carbon dioxide levels with meteorological conditions based on wind speed, wind direction, and barometric pressure data.
Strengths
- Data collection spans a 20-year period from 1968 to 1988, providing a long-term observational record.
- Covers a wide geographic area including the Bali Sea, Bismarck Sea, Indian Ocean, North Pacific Ocean, and Southern Oceans.
- Includes multiple related variables (carbon dioxide partial pressure, salinity, temperature, wind) for concurrent analysis.
Limitations
- Last updated 1988-03-23; freshness should be verified.
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- NOAA_NCEI
- Collection Method
- Surface underway observations using Carbon dioxide (CO2) gas analyzer and Shower head chamber equilibrator.
- Time Range
- 1968-11-16 to 1988-03-23
- Freshness
- 1988-03-23
- Geography
- Bali Sea, Bismarck Sea, Celebes Sea, Coral Sea, Indian Ocean, Java Sea, Makassar Strait, North Pacific Ocean, Papahānaumokuākea Marine National Monument, Philippine Sea, Solomon Sea, South Pacific Ocean, Southern Oceans (> 60 degrees South), Sulu Sea, Tasman Sea