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In the study of Earth's atmosphere, polar easterlies are the dry, cold prevailing winds that blow around the high-pressure areas of the polar highs at the North and South Poles. [1] Cold air subsides at the poles creating high pressure zones, forcing an equatorward outflow of air; that outflow is then deflected westward by the Coriolis effect .
The easterly Trade Winds and the polar easterlies have nothing over which to prevail, as their parent circulation cells are strong enough and face few obstacles either in the form of massive terrain features or high pressure zones. The weaker Westerlies of the Ferrel cell, however, can be disrupted.
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. Presented in a polar coordinate grid, the wind rose shows the frequency of winds blowing from particular directions. The length of each spoke around the circle is related to the ...
The polar easterlies, also known as Polar Hadley cells, are dry, cold prevailing winds that blow from the high-pressure areas of the polar highs at the north and South Poles towards the low-pressure areas within the Westerlies at high latitudes.
polar circle; polar climate; polar easterlies; polar high; polar ice cap (polar light: see) aurora (astronomy) polar low (polar mesospheric cloud) noctilucent cloud; polar mesospheric summer echoes (PMSE) polar night; polar region (polar reversal) magnetic polarity reversal; polar stratospheric cloud (PSC) (nacreous cloud) polar vortex
Alternating belts of high pressure and low pressure develop along the equator, the two tropics, the Arctic Circle and Antarctic Circle, and the two polar regions, giving rise to the trade winds, the westerlies, and the polar easterlies.
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A polar cell is a system of winds that influence the climate of the Cordillera. It is made up of the Westerlies, which are winds that blow warm air east to west from 30 to 60 degrees latitude up to the poles, and the Polar Easterlies, which blow cold air back south where it will repeat the process. [33] It was not always as cold as it is today.