Average calculation model (Heat Overlay): Difference between revisions
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* < 1.5 meter per second, the window is cell centered: 700x700; | * < 1.5 meter per second, the window is cell centered: 700x700; | ||
* >= 1.5 meter per second, the window is 1100 x 500, centered at 1000 x 250 x 100 x 250, where the long edge 1000 is opposite of the wind direction. | * >= 1.5 meter per second, the window is 1100 x 500, centered at 1000 x 250 x 100 x 250, where the long edge 1000 is opposite of the wind direction. | ||
[[File:Average_window_wind_(Heat_Overlay).png | [[File:Average_window_wind_(Heat_Overlay).png|350px]][[File:Average_window_nowind_(Heat_Overlay).png|thumb|350px]] | ||
The following parameters are averaged by this window: | The following parameters are averaged by this window: | ||
* Vegetation fraction, originating as the fraction green/vegetation present in Buildings and Terrains; | * Vegetation fraction, originating as the fraction green/vegetation present in Buildings and Terrains; | ||
* Sky view factor, calculated by the Sky view factor calculation model; | * Sky view factor, calculated by the Sky view factor calculation model; | ||
Revision as of 16:30, 23 September 2019
The wind speed and direction, measured at a weather station, are used to determine the window for averaging. If the wind speed is:
- < 1.5 meter per second, the window is cell centered: 700x700;
- >= 1.5 meter per second, the window is 1100 x 500, centered at 1000 x 250 x 100 x 250, where the long edge 1000 is opposite of the wind direction.
.png)
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The following parameters are averaged by this window:
- Vegetation fraction, originating as the fraction green/vegetation present in Buildings and Terrains;
- Sky view factor, calculated by the Sky view factor calculation model;