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Australian National Wind Multiplier Data Collection

Created 16/10/2025

Updated 16/10/2025

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Wind multipliers are factors that transform wind speeds over open, flat terrain (regional wind speeds) to local wind speeds that consider the effects of direction, terrain (surface roughness), shielding (buildings and structures) and topography (hills and ridges). During the assessment of local wind hazards (spatial significance in the order 10's of metres), wind multipliers allow for regional wind speeds (order 10 to 100's of kilometres) to be factored to provide local wind speeds. Value: The wind multiplier data is used in modelling the impacts (i.e. physical damage) of wind-related events such as tropical cyclones (an input for Tropical Cyclone Risk assessment), thunderstorms and other windstorms. Scope: Includes terrain, shielding and topographic multipliers for national coverage. Each multiplier further contains 8 directions.

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Additional Info

Field Value
Title Australian National Wind Multiplier Data Collection
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/f63cfe72-861f-4d66-a5e9-f08dd022f342
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 07/01/2021
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        113.0,
        -44.0
      ],
      [
        154.0,
        -44.0
      ],
      [
        154.0,
        -10.0
      ],
      [
        113.0,
        -10.0
      ],
      [
        113.0,
        -44.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Australian National Wind Multiplier Data Collection". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/australian-national-wind-multiplier-data-collection