Sea of Japan Ocean Chemistry Profiles from R/V Keifu Maru II Cruise, 2018

From 2018-09-27 to 2018-10-21, discrete profile measurements of dissolved inorganic carbon, total alkalinity, pH, temperature, salinity, oxygen, and nutrients were collected in the Sea of Japan during the R/V Keifu Maru II cruise ks201808. The dataset is provided by the National Oceanic and Atmospheric Administration and was last updated in March 2026.

Use Cases

• Modeling ocean acidification dynamics based on dissolved inorganic carbon and pH measurements.
• Analyzing carbon cycling and water mass properties based on total alkalinity and salinity profiles.
• Studying marine ecosystem health based on nutrient and dissolved oxygen concentrations.
• Calibrating satellite-derived oceanographic data based on in-situ temperature and salinity profiles.

Strengths

• Includes multiple key ocean chemistry variables (DIC, alkalinity, pH, nutrients, oxygen) for a holistic view.
• Data covers a specific time range (2018-09 27 to 2018-10-21) and geographic area (Sea of Japan).
• Last updated on 2026-03-05, suggesting ongoing metadata management.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Data may reflect geographic and temporal bias inherent to a single research cruise.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Discrete samples and profile observations collected during the R/V Keifu Maru II cruise ks201808.

Time Range

2018-09-27 to 2018-10-21

Freshness

Last updated 2026-03-05 23:26:24.198552; freshness should be verified.

Geography

Sea of Japan