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, hosted by the Australian Ocean Data Network, demonstrates improvements in representing ocean properties in regions of strong flow and near coastal boundaries.
Use Cases
- Analyzing regional and temporal variations of ocean oxygen levels based on the global mapping.
- Assessing changes in ocean oxygen inventory over time, such as the reported 0.84% decrease between 1970 and 2010.
- Investigating the expansion and intensification of oxygen minimum zones, like the one in the eastern Pacific Ocean.
- Evaluating the contribution of temperature-driven solubility changes to oxygen decline across different depth ranges.
Strengths
- Covers more than 99% of ocean volume with data interpolated onto 108 depth levels between the surface and 6800 m.
- Provides a 1/2° x 1/2° global grid with annual data from 1955 to 2018.
- Uses the DIVA method which explicitly includes advection and boundary constraints, improving representation in dynamic regions.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Description metadata is limited; actual data quality requires manual inspection after download.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Data Interpolating Variational Analysis (DIVA) applied to full water column profiles from the World Ocean Atlas 2018.
- Time Range
- 1955 to 2018
- Freshness
- Last updated 2026-06-16 18:42:06.036473; freshness should be verified.
- Geography
- Global oceans