June 9 to July 2, 1998 data from the RYOFU MARU research vessel in the North Pacific Ocean. It contains discrete sample and profile measurements for 22 variables including dissolved inorganic carbon, alkalinity, pH, nutrients, chlorophyll, and hydrographic properties. The data were collected by researchers from the Japan Meteorological Agency and Meteorological Research Institute as part of the PACIFICA international synthesis project.
Use Cases
- Calculate ocean acidification metrics by correlating pH, dissolved inorganic carbon, and alkalinity measurements with temperature and salinity.
- Model nutrient limitation patterns using nitrate, phosphate, silicate, and ammonium concentrations alongside chlorophyll a data.
- Analyze water mass age and circulation using chlorofluorocarbon (CFC-11, CFC-12) tracer data in conjunction with potential temperature and sigma-theta.
- Study the marine carbon cycle by examining relationships between dissolved inorganic carbon, dissolved organic carbon, and delta carbon-13 isotopes.
Strengths
- Contains 22 measured chemical, biological, and physical variables per sampling event.
- Data collected over a focused 24-day cruise in the North Pacific Ocean, providing temporal consistency.
Limitations
- Sample size and spatial coverage are limited to a single cruise in 1998.
- Data is over 25 years old, limiting analysis of recent ocean change trends.
Provenance
- Source
- NOAA National Centers for Environmental Information (NCEI), originating from Japan Meteorological Agency and Meteorological Research Institute.
- Collection Method
- Discrete sample and profile observations collected using CTD and bottle instruments.
- Time Range
- 1998-06-09 to 1998-07-02
- Freshness
- null
- Geography
- North Pacific Ocean, from cruise RYOFU MARU PACIFICA_49RY19980609.