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प्रश्न
What are the geostrophic winds?
उत्तर
The velocity and direction of the wind are the net results of the wind generating forces. The winds in the upper atmosphere, 2-3 km above the surface, are free from the frictional effect of the surface and are controlled mainly by the pressure gradient and the Coriolis force. When isobars are straight and when there is no friction, the pressure gradient force is balanced by the Coriolis force and the resultant wind blows parallel to the isobar. This wind is known as the geostrophic wind.
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संबंधित प्रश्न
The direction of wind around a low pressure in the northern hemisphere is ____________.
While the pressure gradient force is from north to south, i.e. from the subtropical high pressure to the equator in the northern hemisphere, why are the winds north easterlies in the tropics?
Discuss the factors affecting the speed and direction of the wind.
