All the wind roses presented here use 16 cardinal directions, such as north (N), NNE, NE, etc. Each spoke is divided into discrete frequency categories, indicating the percentage of time the winds blow from a specific direction within certain speed ranges. These wind roses convey additional details. Each concentric circle represents a different frequency, ranging from zero at the center to increasing frequencies at the outer circles.īelow is an example of a wind rose for Chennai, India, based on three months of hourly wind data across all hours of the day. The length of each "spoke" around the circle corresponds to the frequency of wind blowing from a particular direction. It is presented in a circular format, illustrating the frequency of winds originating from different directions.
A wind rose provides a concise yet information-rich representation of wind speed and direction distribution at a specific location.
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