Lecture 14 - Atmospheric Pressure and Wind (10.24.24)

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10 Terms

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Atmospheric Circulation

The large-scale movement of air that redistributes heat and energy in the atmosphere.

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Pressure Gradient Force (PGF)

A force that causes air to move from areas of higher pressure to areas of lower pressure.

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Coriolis Force

The effect of the Earth's rotation that causes moving air to be deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.

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Friction (in context of wind)

A force that acts to slow down wind speed but does not directly change its direction.

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Resultant Winds

Winds that result from the balance between pressure gradient force, Coriolis force, and friction.

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Upper-Level Winds (winds aloft)

Winds that occur high above the surface, influenced mainly by pressure gradient and Coriolis forces, and generally faster due to reduced friction.

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Beaufort Wind Scale

A scale that relates wind speed to observed effects, used to describe wind conditions without instruments.

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Wind Vane

An instrument used to measure wind direction.

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Anemometer

An instrument used to measure wind speed.

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Pressure Gradient

The rate at which pressure changes in a given direction, influencing wind strength and direction.