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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 in temperature. Wind speed is now commonly measured with an anemometer . Wind speed affects weather forecasting, aviation and maritime operations, construction projects, growth and ...
Wind direction is usually reported in cardinal (or compass) direction, or in degrees. Consequently, a wind blowing from the north has a wind direction referred to as 0° (360°); a wind blowing from the east has a wind direction referred to as 90°, etc. Weather forecasts typically give the direction of the wind along with its speed, for ...
Wind. Cherry tree moving with the wind blowing about 22 m/sec (about 79 km/h or 49 mph) Wind is the natural movement of air or other gases relative to a planet's surface. Winds occur on a range of scales, from thunderstorm flows lasting tens of minutes, to local breezes generated by heating of land surfaces and lasting a few hours, to global ...
Beaufort scale. A ship in a force 12 (" hurricane -force") storm at sea, the highest rated on the Beaufort scale. The Beaufort scale / ˈboʊfərt / is an empirical measure that relates wind speed to observed conditions at sea or on land. Its full name is the Beaufort wind force scale .
Wind power in New Zealand. The Windflow 500 is New Zealand's only locally designed and manufactured wind turbine. Wind power constitutes a small but growing proportion of New Zealand 's electricity. As of December 2020, wind power accounts for 690 MW of installed capacity and over 5 percent of electricity generated in the country.
Prevailing winds. Winds are part of Earth's atmospheric circulation. Global surface wind vector flow lines colored by wind speed from June 1, 2011 to October 31, 2011. In meteorology, prevailing wind in a region of the Earth 's surface is a surface wind that blows predominantly from a particular direction. The dominant winds are the trends in ...
Wind rose. 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 location. Historically, wind roses were predecessors of the compass rose (found on charts ), as there was no differentiation between a cardinal direction and the wind which blew from ...
In atmospheric science, geostrophic flow ( / ˌdʒiːəˈstrɒfɪk, ˌdʒiːoʊ -, - ˈstroʊ -/ [1] [2] [3]) is the theoretical wind that would result from an exact balance between the Coriolis force and the pressure gradient force. This condition is called geostrophic equilibrium or geostrophic balance (also known as geostrophy ).