Dissolved inorganic carbon, total alkalinity, water temperature, salinity, dissolved oxygen concentration, delta carbon-13, helium isotopes, silicate, nitrate, phosphate, radium isotopes, and tritium were collected from discrete sample and profile observations during R/V Knorr TTO-NAS cruises in the North Atlantic Ocean from 1981-04-01 to 1981-10-19. The instruments used to collect these data include CTD and Niskin bottles. These data were collected by Taro Takahashi of Lamont-Doherty Earth Observatory, Robert T. Williams of Scripps Institution of Oceanography, and Peter G. Brewer of Woods Hole Oceanographic Institution.
Use Cases
- Model ocean carbon uptake and acidification based on dissolved inorganic carbon and alkalinity measurements.
- Analyze water column biogeochemical gradients based on profile observations of nutrients like nitrate and phosphate.
- Study ocean ventilation and mixing using tracer variables like helium isotopes and tritium.
- Calibrate and validate regional ocean models based on CTD-derived temperature and salinity profiles.
Strengths
- Data covers a specific 6-month period in 1981, providing a snapshot of North Atlantic conditions.
- Includes multiple key ocean chemistry variables such as DIC, alkalinity, nutrients, and isotopic tracers.
- Collection involved recognized institutions: Lamont-Doherty Earth Observatory, Scripps Institution of Oceanography, and Woods Hole Oceanographic Institution.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect temporal bias inherent to a single cruise series in 1981.
Provenance
- Source
- National Oceanic and Atmospheric Administration, Department of Commerce
- Collection Method
- Discrete sample and profile observations using CTD and Niskin bottles.
- Time Range
- 1981-04-01 to 1981-10-19
- Freshness
- Last updated 2026-03-05 23:40:49.237848; freshness should be verified.
- Geography
- North Atlantic Ocean