Approximately 4.5 million measurements of surface water partial pressure of CO2 collected over the global oceans between 1968 and 2008. The data, assembled by the Lamont-Doherty Earth Observatory (LDEO), includes open ocean and coastal measurements from equilibrator-CO2 analyzer systems and has undergone quality control. It is available as a numeric data package from the Carbon Dioxide Information Analysis Center (CDIAC).
Use Cases
- Modeling global ocean carbon uptake based on partial pressure of CO2 (pCO2) measurements.
- Analyzing long-term trends in sea surface CO2 levels based on the 40-year time series.
- Studying correlations between pCO2 and sea surface temperature (SST) or salinity (SSS) data.
- Calibrating and validating satellite-derived ocean carbon data products using in-situ measurements.
Strengths
- Contains approximately 4.5 million individual measurements.
- Covers a 40-year time period from 1968 to 2008.
- Includes quality control based on system performance, calibration reliability, and internal consistency.
- Reports an estimated average uncertainty of ± 2.5 µatm for pCO2 values.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Last update date is unknown; freshness unverified.
Provenance
- Source
- Lamont-Doherty Earth Observatory (LDEO) database, distributed via the Carbon Dioxide Information Analysis Center (CDIAC).
- Collection Method
- Measurements performed by equilibrator-CO2 analyzer systems on research cruises.
- Time Range
- 1968 to 2008
- Freshness
- The database was intended for annual updates, but the last known version is from 2008.
- Geography
- Global oceans, including open ocean and coastal waters.