wind direction

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An example of a wind vane.
Wind direction is the direction from which the wind is blowing. It is usually reported in cardinal directions or in azimuth degrees.

There are a variety of instruments used to measure wind direction, such as the windsock and wind vane. Both of these instruments work by moving to minimize air resistance. The way they are pointed by prevailing winds indicates the direction from which the wind is blowing.

Modern instruments, called electronic anemometers measure wind direction in a similar fashion but contain electronics to translate directional data from the vane into formats which computers can interpret. Many of these instruments measure wind speed as well.

See also

Direction is the information contained in the relative position of one point with respect to another point without the distance information. Directions may be either relative to some indicated reference (the violins in a full orchestra are typically seated to the left of the
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WIND (SOLARWIND) was a NASA spacecraft launched on November 1, 1994. It was deployed to study radio and plasma that occur in solar wind, in the Earth's magnetosphere. The spacecraft's original mission was to orbit the Sun at the L1
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cardinal directions, they are north, east, south and west. Though the names may seem arbitrary, there are simple specific means to establish each direction, which should work anywhere on Earth where there is a view of the sky.
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windsock or wind cone is a conical textile tube designed to indicate wind direction and relative wind speed. Windsocks typically are used at airports and in chemical plants in which there is risk of gaseous leakage.
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weather vane, also called a wind vane, is a movable device attached to an elevated object such as a roof for showing the direction of the wind. Very often these are in the shape of cockerels and are called weather cocks.
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anemometer is a device for measuring wind speed, and is one instrument used in a weather station. The term is derived from the Greek word, anemos, meaning wind.
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Wind speed is a term applied when talking about the movement of air from one place to the next.

Please note, "Wind speed" should not be confused with the Speed of Wind. Analogous to the Speed of Sound or the Speed of Light, the Speed of Wind, at 3.
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The Yamartino method is an algorithm for calculating an approximation to the standard deviation σθ of wind direction θ during a single pass through the incoming data.
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Apparent wind is the wind experienced by a moving object.

Apparent wind in sailing

In sailing, the apparent wind is the actual flow of air acting upon a sail, or the wind as it appears to the sailor.
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