what are prevailing winds ? How are they formed ?
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PREVAILING WINDS :
winds are winds that blow consistently in a given direction over a particular region on Earth. Due to factors such as uneven heating from the Sun and the Earth's rotation, these winds vary at different latitudes on Earth. Prevailing winds are important for determining locations of wind farms in order to generate electricity.
Prevailing winds also determine the amount of rainfall that different regions get. In Southeastern Asia, these winds result in the formation of monsoons and deserts. The West coast of South and North America receives abundant rain during the winter due to these winds as well.
HOW THEY ARE FORMED :
The sun heats up the area around the equator because it shines so directly down on the Earth there. this expands the air, making it less dense which leads to rising air. As this air rises, it cools, this makes the air lose its water vapour as rain. This air then circulates around to roughly 30 degrees north and south. However the wind doesn't flow directly up, because the Earth rotates. This rotation causes the wind to have a higher speed in the Eastern direction relative to the ground at high latitudes, which results in a variety of prevailing winds.
Prevailing winds and their corresponding cells. Refer to text below for more information.
The trade winds are created by hot air flowing upwards and downwards from the equator, where it gradually cools until it gets to latitudes of about 30 degrees. It then sinks down towards the surface and flows back towards the low-pressure zone at the equator. These flows are known as Hadley cells, named after George Hadley who first described them in 1753. They are responsible for the dry weather patterns at the 30 degree latitudes, where the majority of the Earth's deserts lie.
Not all of the air moves back towards the equator however, and some continues towards the poles, until it reaches the 60 degree latitude where it meets cold air from the poles. These winds are known as the westerlies. At this point, the warm air rises and most flows back towards the 30 degree latitude. This creates the Ferrel cells.
The final regions are at the poles, from the 60 degree latitude to the 90 degree latitudes. This wind cools towards the poles and sinks to the surface, and recirculates. This creates what are known as the polar Hadley cell or polar cell.
The video below illustrates each of the described winds, along with a visualization of each.
#BeBrainly
winds are winds that blow consistently in a given direction over a particular region on Earth. Due to factors such as uneven heating from the Sun and the Earth's rotation, these winds vary at different latitudes on Earth. Prevailing winds are important for determining locations of wind farms in order to generate electricity.
Prevailing winds also determine the amount of rainfall that different regions get. In Southeastern Asia, these winds result in the formation of monsoons and deserts. The West coast of South and North America receives abundant rain during the winter due to these winds as well.
HOW THEY ARE FORMED :
The sun heats up the area around the equator because it shines so directly down on the Earth there. this expands the air, making it less dense which leads to rising air. As this air rises, it cools, this makes the air lose its water vapour as rain. This air then circulates around to roughly 30 degrees north and south. However the wind doesn't flow directly up, because the Earth rotates. This rotation causes the wind to have a higher speed in the Eastern direction relative to the ground at high latitudes, which results in a variety of prevailing winds.
Prevailing winds and their corresponding cells. Refer to text below for more information.
The trade winds are created by hot air flowing upwards and downwards from the equator, where it gradually cools until it gets to latitudes of about 30 degrees. It then sinks down towards the surface and flows back towards the low-pressure zone at the equator. These flows are known as Hadley cells, named after George Hadley who first described them in 1753. They are responsible for the dry weather patterns at the 30 degree latitudes, where the majority of the Earth's deserts lie.
Not all of the air moves back towards the equator however, and some continues towards the poles, until it reaches the 60 degree latitude where it meets cold air from the poles. These winds are known as the westerlies. At this point, the warm air rises and most flows back towards the 30 degree latitude. This creates the Ferrel cells.
The final regions are at the poles, from the 60 degree latitude to the 90 degree latitudes. This wind cools towards the poles and sinks to the surface, and recirculates. This creates what are known as the polar Hadley cell or polar cell.
The video below illustrates each of the described winds, along with a visualization of each.
#BeBrainly
Answered by
16
Here it is
The trade winds are the prevailing patterns of easterly surface winds found in tropics near the earth's equator equator ward of the sub tropical ridge these winds blow from the northeast in Northern hemisphere and south
east in the southern hemisphere ...
hope it helps if it helps mark it as brainlist
The trade winds are the prevailing patterns of easterly surface winds found in tropics near the earth's equator equator ward of the sub tropical ridge these winds blow from the northeast in Northern hemisphere and south
east in the southern hemisphere ...
hope it helps if it helps mark it as brainlist
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