The North Pacific Ocean and Philippine Sea are the geographic scope for this dataset. It contains chemical, meteorological, and physical surface underway observations collected from the RYOFU MARU vessel between October 1997 and July 1999. Hisayuki Y. Inoue of Hokkaido University and Masao Ishii of the Meteorological Research Institute collected the data, which includes dissolved inorganic carbon, alkalinity, salinity, and sea surface temperature.
Use Cases
- Modeling ocean carbon uptake based on dissolved inorganic carbon (DIC) and total alkalinity (TA) measurements.
- Analyzing sea-air gas exchange relationships based on sea surface temperature and wind speed/direction data.
- Studying regional variability in marine chemistry based on salinity and DIC data across the North Pacific Ocean and Philippine Sea.
- Calibrating autonomous sensor data for DIC against other surface underway observations.
Strengths
- Data spans a multi-year period from 1997-10-20 to 1999-07-12.
- Includes multiple variable types: chemical (DIC, TA), physical (salinity, SST), and meteorological (air temperature, barometric pressure, wind).
- Associated with three specific cruise IDs: RF9709, RF9901, and RF9906.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Last updated 1999-07-12 00:00:00; freshness should be verified.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- NOAA_NCEI
- Collection Method
- Surface underway observations using autonomous DIC sensor and other instruments on the RYOFU MARU vessel.
- Time Range
- 1997-10-20 to 1999-07-12
- Geography
- North Pacific Ocean and Philippine Sea