NCEI Accession 0143398 contains discrete sample and profile data collected from the KNORR research vessel during the GEOSECS Atlantic cruise from July 1972 to April 1973. The data includes measurements of dissolved inorganic carbon, alkalinity, temperature, salinity, dissolved oxygen, nutrients, and radioactive tracers across the North Atlantic Ocean, North Greenland Sea, Norwegian Sea, South Atlantic Ocean, and Southern Oceans. These data were collected by researchers from Columbia University's Lamont-Doherty Earth Observatory and Princeton University.
Use Cases
- Calibrating ocean carbon cycle models based on dissolved inorganic carbon and alkalinity measurements
- Analyzing historical ocean ventilation and mixing using helium-3 and tritium isotope data
- Studying nutrient distributions and biogeochemical processes based on nitrate, phosphate, and silicate concentrations
- Investigating deep ocean hydrography and water mass properties using potential temperature and salinity profiles
Strengths
- Data covers a major oceanographic research program (GEOSECS Atlantic) with a defined cruise period
- Includes a wide range of geochemical variables, including carbon system parameters, nutrients, and radioactive tracers
- Spatial coverage spans multiple ocean basins from the North Atlantic to the Southern Ocean
Limitations
- Last updated 1973-04-01; freshness should be verified
- Column-level documentation is absent; field semantics must be inferred after download
- Row count is unknown, which may limit suitability assessment
Provenance
- Source
- NOAA NCEI, collected by Taro Takahashi (Columbia University; Lamont-Doherty Earth Observatory) and Robert M. Key (Princeton University)
- Collection Method
- Discrete sample and profile observations using CTD and bottle instruments
- Time Range
- 1972-07-18 to 1973-04-01
- Geography
- North Atlantic Ocean, North Greenland Sea, Norwegian Sea, South Atlantic Ocean, Southern Oceans (> 60 degrees South)