Average calculation model (Heat Overlay)

The wind speed and direction, measured at a weather station, are used to determine the window for averaging values around a cell. In calculations with a low wind speed, an cell-centered averaging window is used. In calculations with a high wind speed, an oblong rectangle is used for averaging, with the cell in question offset towards the far side along the line of the wind direction.

Wind speed:

• < 1.5 meter per second, the window is square and cell centered
• >= 1.5 meter per second, the window is oblong.

Window	Model	Low wind speeds	High wind speeds
Large window	Vegetation fraction, based on the fraction green/vegetation present in Buildings and Terrains Sky view factor, calculated by the sky view factor calculation model	700x700 meters, cell-centered	1100x500 meters, centered at 1000x250x100x250
Large window	Wind speed, based on the wind direction configured as wind speed parameter for the Overlay's calculation.	175x175 meters, cell-centered	280x140 meters, centered at 210x70x70x70

See also

• Vegetation fraction average result type
• Sky view factor average result type

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