From Australian Oceans Data Network
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IMOS - OceanCurrent - Gridded sea level anomaly - Near real time

Created 23/06/2025

Updated 28/09/2025

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Gridded (adjusted) sea level anomaly (GSLA), gridded sea level (GSL) and surface geostrophic velocity (UCUR,VCUR) for the Australasian region. GSLA is mapped using optimal interpolation of detided, de-meaned, inverse-barometer-adjusted altimeter and tidegauge estimates of sea level. GSL is GSLA plus an estimate of the departure of mean sea level from the geoid – mean sea level (over 18 years of model time) of Ocean Forecasting Australia Model version 3 (OFAM3). The geostrophic velocities are derived from GSLA and the mean surface velocity from OFAM3. The altimeter data window for input to the Delayed Mode (DM) maps is symmetrical about the map date. The width of the window is dependent on the number of altimeters flying at the time and ranges from 30 days to 14 days. The altimeter data window for Near Real Time (NRT) maps is asymmetrical about the analysis date (-21 to 4 days). For both NRT and DM, altimeter data is weighted by the difference between the analysis date of the map and the time of each altimeter observation. References: http://imos.aodn.org.au/oceancurrent

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Additional Info

Field Value
Title IMOS - OceanCurrent - Gridded sea level anomaly - Near real time
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/b613151b-fb75-4cd8-90b5-81192d51c5e7
Contact Point
Australian Ocean Data Network
Gabriela.Semolinipilo@csiro.au
Reference Period 28/08/2025
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        57.00000000000001,
        -59.99999999999999
      ],
      [
        185.0,
        -59.99999999999999
      ],
      [
        185.0,
        10.0
      ],
      [
        57.00000000000001,
        10.0
      ],
      [
        57.00000000000001,
        -59.99999999999999
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "IMOS - OceanCurrent - Gridded sea level anomaly - Near real time". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/imos-oceancurrent-gridded-sea-level-anomaly-near-real-time