From Geoscience Australia
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GA GNSS-derived Tropospheric Data Products

Created 16/10/2025

Updated 16/10/2025

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Geoscience Australia (GA) provides tropospheric Zenith Total Delay (ZTD) products in near-real-time (hourly) as well as on a daily basis. These delays are derived from Global Navigation Satellite System (GNSS) signals measured at Continuously Operated Reference Sites (CORS) across multiple networks including the Australian Regional GNSS Network (ARGN), the Asia-Pacific Reference Frame (APREF), the South Pacific Regional GNSS Network (SPRGN), and the International GNSS Service (IGS). Data from these continuous stations are accessed from the Australian National Positioning Infrastructure Data Collection.

GA operates as an analysis center of the European Meteorological Services Network (EUMETNET) Economic Interest Group (EIG) GNSS water vapour programme (E-GVAP, https://egvap.dmi.dk/). GA GNSS derived troposphere data products are provided to E-GVAP, Australian Bureau of Meteorology (BoM) and the United Kingdom's Meteorological Office (UK Met Office).

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Additional Info

Field Value
Title GA GNSS-derived Tropospheric Data Products
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/a7eaaf20-5b9d-4539-bb99-400865081005
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        45.0,
        -90.0
      ],
      [
        168.0,
        -90.0
      ],
      [
        168.0,
        -9.0
      ],
      [
        45.0,
        -9.0
      ],
      [
        45.0,
        -90.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "GA GNSS-derived Tropospheric Data Products". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/ga-gnss-derived-tropospheric-data-products