The windrose defines the wind probabilities used in determining the dispersion calculations. The Windrose can be accessed by clicking on the Windrose button
A four, eight, twelve or sixteen spoke windrose may be specified.
The windrose percentages must add up to one hundred.
Winds come from the directions presented. For example, a northerly wind comes from the north.
The north direction relative to the plot plan can be defined by rotating the windrose by moving the slider bar to the desired angle. Note the plot plan can be shown to help defining the north direction.
