Average calculation model (Heat Stress Overlay)
The wind speed and direction are used to determine the window for averaging values around a cell. Commonly, the values at a reference weather station are used. In calculations with a low wind speed, an cell-centered averaging window is used. For high wind speeds, an oblong averaging window is used, offsetting the cell along the wind direction.
Wind speed:
- < 1.5 meter per second, the window is square and cell centered
- >= 1.5 meters per second, the window is oblong and offset toward the wind direction to account for wind effects.
The averaging windows are described below:
| Window | Model | Low wind speeds | High wind speeds |
|---|---|---|---|
| Large window |
|
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| Small window |
|
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