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Apr 19, 2022 · The wind that blows at night towards the bottom of the valley from the mountain is called mountain wind. The wind that blows up the mountain during the daytime from the valley due to temperature differences is called valley wind.
Revision notes on 2.1.1 Global Desert Systems for the AQA A Level Geography syllabus, written by the Geography experts at Save My Exams.
Wind is the movement of air caused by the uneven heating of the Earth by the sun. It does not have much substance—you cannot see it or hold it—but you can feel its force. It can dry your clothes in summer and chill you to the bone in winter. It is strong enough to carry sailing ships across the ocean and rip huge trees from the ground.
- Trade Winds. Trade winds are the dominating patterns of easterly surface winds present at the tropics in the direction of the Earth’s equator. The trade winds primarily blow from the southeast in the Southern Hemisphere and from the northeast in the Northern Hemisphere.
- Monsoon Winds. Monsoons are the seasonal wind in southern Asia blowing from the southwest (bringing rain) in summer and from the northeast in winter. These winds last for many months within the tropical regions.
- Polar Easterlies. The polar easterlies are also referred to as polar Hadley cells. They are the prevailing cold and dry winds that propel from the high-temperature regions of the polar heights at the south and north poles moving towards the low-pressure regions within the westerlies at high latitudes.
- The Westerlies. The Westerlies are the winds in the middle latitudes in the ranges of 35 to 65 degrees. These winds blow from the west to the east and determine the traveling directions of extratropical cyclones in a similar direction.
Find out where wind comes from and how to measure wind direction with this BBC Bitesize Scotland article for First and Second Level CfE.
Global atmospheric circulation creates winds across the planet as air moves from high-pressure to low-pressure areas. : From the northeast in the Northern Hemisphere and the southeast in the Southern Hemisphere. : Steady winds that helped historical sailing ships on transoceanic journeys.
People also ask
What type of wind blows at night?
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How does a geostrophic wind develop?
A geostrophic wind flows parallel to the isobars on surface pressure chart. It develops when there is no surface friction. As the wind flows from high to low pressure, this exerts a pressure gradient force which is balanced by the Coriolis force.
