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wind rose

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  1. [meteorology] A diagram showing, for a given place and time, how much of the time the wind blows from each direction. Wind roses have many variations, but in the typical pattern, a number of wedges (usually 8, 12, or 16) radiate from the center of a circle. The width and orientation of a wedge represent the direction from which the wind blows; the length of a wedge represents the percentage of time the wind blows from that direction. More complex wind roses use color schemes and other graphic devices to represent wind speed and related information. Media/wind-rose.gif

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