In meteorology, wind speed, or wind flow speed, is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes...

hurricane wind scale is based on the highest wind speed averaged over a one-minute interval 10 m above the surface. Although the scale shows wind speeds in continuous...

Calculation of wind power density includes the effect of wind velocity and air density. Wind turbines are classified by the wind speed they are designed...

In common usage, wind gradient, more specifically wind speed gradient or wind velocity gradient, or alternatively shear wind, is the vertical component...

boundary layer. The faster the wind speed, the more readily the surface cools.[citation needed] Contrary to popular belief, wind chill does not refer to how...

windsock (a wind cone or wind sleeve) is a conical textile tube that resembles a giant sock. It can be used as a basic indicator of wind speed and direction...

Wind shear /ʃɪr/ (or windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance...

aspects such as velocity (wind speed), the density of the gases involved, and energy content or wind energy. In meteorology, winds are often referred to according...

length, along with the wind speed (wind strength), and duration, determines the size (sea state) of waves produced. If the wind direction is constant,...

Tropical cyclone wind speed climatology is the study of wind distribution among tropical cyclones, a significant threat to land and people. Since records...

The tip-speed ratio, λ, or TSR for wind turbines is the ratio between the tangential speed of the tip of a blade and the actual speed of the wind, v. The...

three-second wind speed measurements, it is assumed to be an average of 88.8% of the three-second measurement. For two-second wind speed measurements...

empirical measure that relates wind speed to observed conditions at sea or on land. Its full name is the Beaufort wind force scale. The scale that carries...

direction of the wind along with its speed, for example a "northerly wind at 15 km/h" is a wind blowing from the north at a speed of 15 km/h. If wind gusts are...

the true wind minus the velocity of the object.[citation needed] In sailing, apparent wind is the speed and direction of wind indicated by a wind instrument...

Superimposed with the solar-wind plasma is the interplanetary magnetic field. The solar wind varies in density, temperature and speed over time and over solar...

the wind speed, turbines have must survive much higher wind loads (such as gusts of wind) than those loads from which they generate power. A wind turbine...

Av^{3}} . Wind power is thus proportional to the third power of the wind speed; the available power increases eightfold when the wind speed doubles. Change...

(from Ancient Greek άνεμος (ánemos) 'wind' and μέτρον (métron) 'measure') is a device that measures wind speed and direction. It is a common instrument...

A wind gust or just gust is a brief, sudden increase in the wind speed. It usually lasts for less than 20 seconds, briefer than a squall, which lasts minutes...

by wind speed, duration, fetch, and water depth. When directly generated and affected by local wind, a wind wave system is called a wind sea. Wind waves...

a wind gradient; the fact that sound is carried along by the wind is not important. For sound propagation, the exponential variation of wind speed with...

(26 inHg) and maximum sustained wind speeds of 165 kn (85 m/s; 305 km/h; 190 mph). The highest maximum sustained wind speed ever recorded was 185 kn (95 m/s;...

cyclone scales are organized around sustained wind speeds. However, variations in the averaging period of winds in different basins make inter-comparison...

direction of wind with the highest speed over a particular point on the Earth's surface at any given time. A region's prevailing and dominant winds are the...

A wind rose is a graphic tool used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular...

plot, is a graph that shows a sailboat's potential speed over a range of wind speeds and relative wind angles. It normally consists of the right side of...

true wind speed. As a sailboat sails further from the wind, the apparent wind becomes smaller and the lateral component becomes less; boat speed is highest...

sail contributes to the "apparent wind"—the wind speed and direction as measured on the moving craft. The apparent wind on the sail creates a total aerodynamic...

at speeds that are often faster than the wind on both upwind and downwind points of sail. Faster-than-the-wind sailing means that the apparent wind angle...