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The polar easterlies (also Polar Hadley cells) are the dry, cold prevailing winds
Prevailing winds

The prevailing winds are the trends in direction of wind with the highest frequency over a particular point on the earth's surface. The dominant winds are the trends in direction of wind with the highest speed over a particular point on the earth's surface....
 that blow from the high-pressure areas of the polar high
Polar high

The polar highs are areas of high atmospheric pressure around the north pole and south poles, south polar high being the stronger one because land gains and losses heat more effectively than sea....
s at the north
North Pole

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole is, subject to the caveats explained below, defined as the point in the northern hemisphere where the Earth's axis of rotation meets the Earth's surface....
 and south pole
South Pole

The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's rotation intersects the surface....
s towards the low-pressure areas of the polar front
Polar front

In meteorology, the polar front is the boundary between the polar cell and the Ferrel cell in each hemisphere. At this boundary a sharp gradient in temperature occurs between these two air masses, each at very different temperatures....
s between 60 and 90 degrees north and south. Cold
Cold

Cold describes the condition of coldness.Cold may also refer to:*Common cold, a type of Upper respiratory tract infection*Chinese_food_therapy#Cantonese_classification_of_food...
 air subsides
Subsidence

In geology, engineering, and surveying, subsidence is the motion of a surface as it shifts downward relative to a datum such as sea-level. The opposite of subsidence is Tectonic uplift, which results in an increase in elevation....
 at the pole creating the high pressure, forcing a southerly (northward in the southern hemisphere) outflow of air towards the equator
Equator

The equator is the intersection of the Earth's surface with the Plane perpendicular to the Earth's rotation and containing the Earth's center of mass....
; that outflow is then deflected eastward by the Coriolis effect
Coriolis effect

In physics, the Coriolis effect is an apparent deflection of moving objects when they are viewed from a rotating reference frame.Newton's laws of motion govern the motion of an object in an inertial frame of reference....
.






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The polar easterlies (also Polar Hadley cells) are the dry, cold prevailing winds
Prevailing winds

The prevailing winds are the trends in direction of wind with the highest frequency over a particular point on the earth's surface. The dominant winds are the trends in direction of wind with the highest speed over a particular point on the earth's surface....
 that blow from the high-pressure areas of the polar high
Polar high

The polar highs are areas of high atmospheric pressure around the north pole and south poles, south polar high being the stronger one because land gains and losses heat more effectively than sea....
s at the north
North Pole

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole is, subject to the caveats explained below, defined as the point in the northern hemisphere where the Earth's axis of rotation meets the Earth's surface....
 and south pole
South Pole

The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is one of the two points where the Earth's rotation intersects the surface....
s towards the low-pressure areas of the polar front
Polar front

In meteorology, the polar front is the boundary between the polar cell and the Ferrel cell in each hemisphere. At this boundary a sharp gradient in temperature occurs between these two air masses, each at very different temperatures....
s between 60 and 90 degrees north and south. Cold
Cold

Cold describes the condition of coldness.Cold may also refer to:*Common cold, a type of Upper respiratory tract infection*Chinese_food_therapy#Cantonese_classification_of_food...
 air subsides
Subsidence

In geology, engineering, and surveying, subsidence is the motion of a surface as it shifts downward relative to a datum such as sea-level. The opposite of subsidence is Tectonic uplift, which results in an increase in elevation....
 at the pole creating the high pressure, forcing a southerly (northward in the southern hemisphere) outflow of air towards the equator
Equator

The equator is the intersection of the Earth's surface with the Plane perpendicular to the Earth's rotation and containing the Earth's center of mass....
; that outflow is then deflected eastward by the Coriolis effect
Coriolis effect

In physics, the Coriolis effect is an apparent deflection of moving objects when they are viewed from a rotating reference frame.Newton's laws of motion govern the motion of an object in an inertial frame of reference....
. Unlike the westerlies
Westerlies

The Westerlies or the Prevailing Westerlies are the Prevailing winds in the middle latitudes between 30 and 60 degrees latitude, blowing from the high pressure area in the horse latitudes towards the Geographical poles....
 in the middle latitudes
Middle latitudes

The middle latitudes are between 23?26'22" North and 66?33'39" North, and between 23?26'22" South and 66?33'39" South latitude, or, the earth's temperate zones between the tropics and the Arctic and Antarctic....
, the polar easterlies are often weak and irregular. These prevailing winds blow from the east
East

East is a Direction in geography. It is one of the four cardinal directions or compass points, opposite of west and at right angles to north and south....
 to the west
West

West is most commonly a noun, adjective, or adverb indicating Direction or geography.West is one of the four cardinal directions or compass points....
.

The Hadley cells are also called trade winds and run easterly, named after George Hadley
George Hadley

George Hadley was an England lawyer and amateur meteorologist who proposed the atmospheric mechanism by which the Trade Winds are sustained. As a key factor in ensuring that European sailing vessels reached North American shores, understanding the Trade Winds was as important in Hadley's day as the understanding of the solar wind and other e...
 who first described them in 1753.

See also

  • Westerlies
    Westerlies

    The Westerlies or the Prevailing Westerlies are the Prevailing winds in the middle latitudes between 30 and 60 degrees latitude, blowing from the high pressure area in the horse latitudes towards the Geographical poles....
  • East wind
    East Wind

    East Wind Community is an intentional community located in the Missouri Ozarks. Founded in 1973, it is a secular and democratic community in which members hold all communities assets in common....