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Wind

  • What is the wind? Reasons of wind, types of wind:
  • The wind is a natural, mostly horizontal movement of air in the atmosphere close to Earth’s surface.
  • The basic driver of the air movements is that the atmospheric pressure has different values ​​between regions. The wind is a flow of air displaced between the low pressure and the high pressure zone, always moving from the high pressure area to the low pressure area. The greater the pressure difference between the two zones, the greater the air flow rate. According to the speed that the wind has, names like breeze, storm.

 

  • The direction of the wind is measured by wind, and the speed is measured by anemometer. Anemometer is a simple measuring instrument that shows the wind speed by taking advantage of the wind’s speed of turning a propeller. The winds in the heights are measured with the help of balloons. As the balloons, known as the speed of ascension, reach a certain height, they start to travel with the wind speed. The movement of the balloon is observed. With the trigonometric calculations, the path of the balloon unit time is calculated and the speed of the wind is found there. For more accurate measurements, the balloon is either followed by a radar or a radio transmitter is mounted on the ball.

 

  • It causes the formation of currents and waves in the oceans and is effective in shaping the shores. The formation of coastal arrows, tombolo, lagoon, falez, etc. in the coasts is related to the waves. It is especially effective in the deserts in the black. The rivers, glaciers and ripples in the deserts are the only shaping force winds because they are not effective. Forms such as sand dune, tafoni, yardang, desert pavement are associated with the wind. It is very important for the continuation of the plant neslination that the winds carry the plant spores and fertilize the flowers. The wind, which is benefited from the power of windmills and sailboats, causes the fire to grow by making a negative impact on forest fires.

 

  • The Reasons of the Wind
  • When flowing from the high pressure area to the low pressure area:
  • The return of the world
  • Surface rubs
  • Local heat spread
  • Other atmospheric events
  • Topographic structure of the earth
  • The direction of the wind and the presence or absence of turbulence.

 

  • Wind, low (cyclone) and high (anticyclone) areas carry different characteristics.
  • It acts in the following way within the cyclone;
  • The pressure is radially inward,
  • The centrifugal forces are directed outwards,
  • The Coriolis force is outward.

 

 

 

 

 

  • In anticyclone;
  • The pressure change is radially outward,
  • The centrifugal force is outward,
  • The Coriolis force acts inward.

 

  • As a result of all these effects, the wind continues to run perpendicular to the lines of the wind. By drawing these lines, meteorological maps are obtained. The surface rubs and Coriolis force can deviate perpendicular to the coaxial lines of the wind. On the seas, this divergence angle can be between 20 ° and 30 ° and 45 °.

 

  • Turbulence occurs due to the heat and mechanical properties of the earth in the winds of the lower strata of the atmosphere. The winds that circulate through the pressure fields without turbulence are called the leaning winds. If you descend from the land to the sea, a slightly inclined logarithmically descends a spiral line. The force that causes the spiral to be drawn instead of a straight line is Coriolis force. In the northern hemisphere, the spiral turns in the clockwise direction and in the southern hemisphere, the clockwise direction. The wind speed on the upper layers of the atmosphere can be up to 400 km / h.

 

  • Wind Types
  • It takes names according to the reasons of arrival to the region and the square.
  • Constant winds, which occur due to the general air circulation in the atmosphere;
  • Polar winds: From the poles to the low pressure areas at the 60th latitude.
  • Western winds: strong motions between dynamic high pressure field at latitudes of 30 ° and dynamic low pressure at latitudes of 60 °.
  • Trade winds: Continuous and dry ascent wind in northeast direction in the north hemisphere, southeast in the southern hemisphere. Trade winds move from the dynamic high pressure field at latitudes 30 ° to the tropical low pressure fields at the equator.
  • Monsoon winds are called winds because of the fact that the summer and winter atmospheric pressure changes in the opposite direction and that there is a big difference between the pressure fields in the region. It goes from summer to land and winter to sea. Winter monsoon is cold and dry, summer monsoon is quite nemlid.

 

  • The winds carry features according to the region they are in:
  • Breeze; Between land and sea. At noon time, the land warms up and brings it from the sea to the land, bringing it to the low pressure field. At night this will be much slower. These air currents also occur between the mountains and the valleys.
  • Cold local winds are occasionally due to pressure coming from the water. Works on the Adriatic Sea and the Mediterranean coasts of France. Bora gets the name.
  • Hot local winds are the dry hot winds that affect the northern slopes of the Swiss Alps. Fen wind (Fohn) is formed by the adiabatic heating of the escaping wind from the mountain.
  • In the picture below there is a windsock. Windsocks is a practical, visual method of gaining insight into the direction and severity of the wind.
Wind
Author: wik Date: 8:31 pm
Geography


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