Gridded sea level anomaly (GSLA), sea level (GSL), and surface geostrophic velocity (UCUR, VCUR) data for the Australasian region. The data is produced by the Australian Ocean Data Network using optimal interpolation of altimeter and tide gauge estimates, combined with model outputs from Ocean Forecasting Australia Model version 3 (OFAM3). It is available in both delayed mode and near real time, with the last metadata update recorded on 2026-07-10.
Use Cases
- Monitor near real-time sea level changes based on the gridded sea level anomaly (GSLA) data.
- Analyze ocean circulation patterns based on the derived surface geostrophic velocity (UCUR, VCUR) fields.
- Study long-term sea level trends by combining GSLA with the model-derived mean sea level estimate (GSL).
Strengths
- Data integrates multiple sources: satellite altimeter and tide gauge estimates.
- Includes both delayed mode and near real-time (NRT) products, with NRT data using an asymmetrical window (-21 to +4 days).
- Derived geostrophic velocities combine GSLA with mean surface velocity from the OFAM3 model.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count and file size are unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to the Australasian region coverage.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Optimal interpolation of detided, de-meaned, inverse-barometer-adjusted altimeter and tide gauge estimates.
- Freshness
- Last updated 2026-07-10 00:27:55.123152; freshness should be verified.
- Geography
- Australasian region