Hokuto Maru: Surface Ocean Carbon and Meteorological Measurements

NCEI Accession 0080983 contains surface underway data collected from the research vessel Hokuto Maru across multiple Pacific Ocean regions and marine sanctuaries between July 1992 and August 1996. The dataset includes measurements of air and water partial pressure of carbon dioxide, salinity, sea surface temperature, air temperature, barometric pressure, wind speed, and wind direction. Data were collected by researchers from Hokkaido University and the Meteorological Research Institute using carbon dioxide gas analyzers and equilibrators.

Use Cases

• Analyzing spatial patterns of ocean carbon uptake based on partial pressure of CO2 measurements.
• Studying air-sea gas exchange dynamics using concurrent meteorological and chemical data.
• Calibrating or validating ocean carbon cycle models with in-situ surface underway observations.
• Investigating regional variability in sea surface temperature and salinity across Pacific basins.

Strengths

• Covers a multi-year time range from 1992-07-04 to 1996-08-27.
• Includes data from multiple specific cruise IDs (9207, 9407, 9601, 9607).
• Geographic coverage spans numerous distinct ocean regions and marine sanctuaries.

Limitations

• Key metadata such as row count, file size, and column names are unknown across all sources.
• License information is not provided.
• The dataset's age means it may not reflect current ocean conditions.

Provenance

Source

Hisayuki Y. Inoue (Hokkaido University) and Masao Ishii (Meteorological Research Institute)

Collection Method

Surface underway observations using Carbon dioxide (CO2) gas analyzer and Shower head chamber equilibrator.

Time Range

1992-07-04 to 1996-08-27

Freshness

2026-03-05 23:35:36.160238

Geography

Bismarck Sea, Columbia River estuary, Coral Sea, Cordell Bank NMS, East China Sea, Greater Farallones NMS, Hawaiian Islands Humpback Whale NMS, Indian Ocean, North Pacific Ocean, Papahānaumokuākea Marine National Monument, Philippine Sea, Solomon Sea, South Pacific Ocean