840 scientific cruises collected this dataset of full-depth ocean chemistry measurements between 1972 and 2017. It includes quality-controlled data for salinity, oxygen, nutrients, dissolved inorganic carbon, total alkalinity, pH, and chlorofluorocarbons. The National Oceanic and Atmospheric Administration produced this synthesis by appending data from 116 new cruises to the prior GLODAPv2 product.
Use Cases
- Modeling ocean carbon uptake and storage based on dissolved inorganic carbon and total alkalinity measurements.
- Analyzing long-term trends in ocean deoxygenation based on oxygen concentration data.
- Studying the penetration and aging of anthropogenic tracers based on chlorofluorocarbon (CFC) data.
- Investigating nutrient distributions and limitations in global oceans based on nitrate, silicate, and phosphate measurements.
- Calibrating and validating satellite-derived ocean salinity and biogeochemical products.
Strengths
- Data spans 45 years (1972-2017) from 840 cruises, providing long-term temporal coverage.
- Primary and secondary quality control was applied to core variables, with severe biases corrected and outliers removed.
- Accuracy estimates are provided for key variables, such as 0.005 in salinity and 4 µmol kg-1 in dissolved inorganic carbon.
Limitations
- Differences in data related to known or likely time trends or variations have not been corrected for.
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment for specific modeling tasks.
Provenance
- Source
- National Oceanic and Atmospheric Administration, Department of Commerce
- Collection Method
- Synthesis of discrete bottle measurements from scientific cruises, appended to the prior GLODAPv2 product.
- Time Range
- 1972 to 2017
- Freshness
- Last updated 2026-03-05 23:38:35.468703; freshness should be verified.
- Geography
- Global Ocean