The Roach and Bindoff Global Temperature, Salinity and Oxygen Atlas V1.0 uses the Data Interpolating Variational Analysis (DIVA) method to map full water column profiles onto a 1/2° x 1/2° grid at 108 depth levels. It covers the period from 1955 to 2018 in one-year intervals, derived from the World Ocean Atlas 2018. The atlas is hosted by the Australian Ocean Data Network and was last updated in June 2026.
Use Cases
- Analyzing regional and temporal variations in ocean oxygen levels based on the global mapping.
- Assessing changes in the oxygen minimum zone, such as its expansion in the eastern Pacific Ocean.
- Quantifying full ocean oxygen inventory changes, like the 0.84% decrease observed between 1970 and 2010.
- Evaluating the contribution of temperature-driven solubility changes to oxygen decline at different depth ranges.
Strengths
- Covers a 63-year time period (1955-2018) with annual resolution.
- Uses the DIVA mapping method, which explicitly includes advection and boundary constraints for improved accuracy in regions of strong flow.
- Provides data on 108 depth levels from the surface to 6800 meters, covering more than 99% of ocean volume.
- Includes a specific finding on global oxygen decline (0.84% ± 0.42% between 1970 and 2010).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment for large-scale statistical modeling.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Profiles sourced from the World Ocean Atlas 2018, interpolated using the Data Interpolating Variational Analysis (DIVA) method.
- Time Range
- 1955 to 2018
- Freshness
- Last updated 2026-06-04 19:40:52.850842; freshness should be verified.
- Geography
- Global oceans