Discrete sample and profile observations of dissolved inorganic carbon, pH, alkalinity, and related chemical and physical variables collected from the Ryofu Maru II research vessel. The data were collected in the North Pacific Ocean and Philippine Sea during a cruise from January 21 to February 9, 1997, as part of the PACIFICA project. Data collection was performed by researchers from the Japan Meteorological Agency and Meteorological Research Institute using instruments including CTD and a Coulometer.
Use Cases
- Modeling ocean carbon uptake and acidification based on dissolved inorganic carbon and pH measurements.
- Studying marine nutrient cycles based on nitrate, phosphate, and silicate concentration data.
- Analyzing water mass properties and circulation using temperature, salinity, and potential temperature (theta) profiles.
- Investigating chlorofluorocarbon (CFC) distributions as tracers of ocean ventilation and circulation.
- Assessing phytoplankton biomass and productivity using chlorophyll a and phaeopigment measurements.
Strengths
- Includes over 20 measured variables relevant to ocean carbon and biogeochemistry, such as dissolved inorganic carbon, alkalinity, and nutrients.
- Data were collected as part of the international PACIFICA synthesis project, suggesting standardized protocols.
- Provides a specific temporal snapshot from a 20-day research cruise in January-February 1997.
Limitations
- Last updated 1997-02-09 00:00:00; 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 (NODC Accession 0112277), sourced from nasa_earthdata.
- Collection Method
- Data collected from discrete sample and profile observations using CTD, Coulometer for DIC measurement, and bottle samples.
- Time Range
- 1997-01-21 to 1997-02-09
- Freshness
- 1997-02-09 00:00:00
- Geography
- North Pacific Ocean and Philippine Sea