NODC Accession 0112306 includes biological, chemical, and physical profile data collected from the SHUMPU MARU in the Philippine Sea from 1999-01-21 to 1999-01-28. The data were collected by researchers from the Japan Meteorological Agency and Meteorological Research Institute as part of the PACIFICA project. It contains measurements for over 20 variables including dissolved inorganic carbon, pH, alkalinity, nutrients, and chlorofluorocarbons.
Use Cases
- Calibrating ocean carbon cycle models based on dissolved inorganic carbon and alkalinity measurements.
- Analyzing historical nutrient distributions (nitrate, phosphate, silicate) in the Philippine Sea.
- Studying ocean acidification trends using pH and carbonate system parameters.
- Investigating water mass age and circulation using chlorofluorocarbon (CFC-11, CFC-12) tracers.
Strengths
- Data covers over 20 distinct chemical, biological, and physical oceanographic variables.
- Measurements were taken during a dedicated research cruise in the Philippine Sea over an 8-day period in January 1999.
- Data is part of the international PACIFICA synthesis project for Pacific Ocean interior carbon.
Limitations
- Last updated 1999-01-28 00:00:00; freshness should be verified.
- Row count and column-level documentation are absent; field semantics must be inferred after download.
- Data may reflect geographic and temporal bias inherent to a single cruise in a specific region and season.
Provenance
- Source
- NOAA_NCEI (NODC Accession 0112306), collected by Koji Hayashi and Masao Ishii.
- Collection Method
- Discrete sample and profile observations using CTD, Coulometer for DIC measurement, and bottle.
- Time Range
- 1999-01-21 to 1999-01-28
- Freshness
- 1999-01-28
- Geography
- Philippine Sea