PACIFICA project data collected by Naoshi Kubo of the Japan Meteorological Agency aboard the RYOFU MARU. The dataset contains discrete sample and profile observations of dissolved inorganic carbon, pH, alkalinity, nutrients, and hydrographic variables. Measurements were taken in the North Pacific Ocean from May 30 to June 22, 1997.
Use Cases
- Model ocean acidification by analyzing pH and total alkalinity (TA) against dissolved inorganic carbon (DIC) measurements.
- Study nutrient cycles by correlating nitrate, nitrite, phosphate, and silicate concentrations with chlorophyll a and phaeopigment data.
- Analyze water mass ventilation using chlorofluorocarbon (CFC-11, CFC-12) tracers alongside potential temperature and salinity profiles.
- Investigate carbon system dynamics by calculating pCO2 from DIC and TA paired with in-situ water temperature and dissolved oxygen.
- Calibrate biogeochemical models with profile data for sigma-theta, hydrostatic pressure, and ammonium (NH4) across sampling stations.
Strengths
- Includes over 20 key chemical, biological, and physical variables for comprehensive ocean carbon system analysis.
- Data collected during a focused 24-day cruise providing coherent spatial and temporal context for the North Pacific region.
Limitations
- Temporal coverage is limited to a single cruise in 1997, offering only a snapshot in time.
- Sample size and spatial resolution are unknown, potentially limiting statistical robustness for broad regional inferences.
Provenance
- Source
- Japan Meteorological Agency, collected by Naoshi Kubo as part of the PACIFICA project, archived by NOAA NCEI.
- Collection Method
- Discrete sample and profile observations using CTD and bottle instruments.
- Time Range
- 1997-05-30 to 1997-06-22
- Freshness
- null
- Geography
- North Pacific Ocean, from the RYOFU MARU research vessel.