Exam 6: Stability and Cloud Development

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​Subsidence has no effect on atmospheric stability.

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An inversion represents an extremely stable atmosphere because air that rises into the inversion will eventually become ____ and ____ dense than the surrounding air.​

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​The combination of warming the surface and warming the air aloft creates the greatest atmospheric stability.

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In a conditionally unstable atmosphere, the environmental lapse rate will be ____ the moist adiabatic rate and ____ the dry adiabatic rate.​

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Subsidence inversions are just as common on Earth's surface as they are aloft.​

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A hot "bubble" of air is called a(n) ____________________.​

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When air is stable and close to saturation stratocumulus clouds can be produced by a process called ____________________.​

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At Earth's surface, a rising saturated air parcel cools at the​

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​Convective instability is associated with the development of

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​Which of the following sets of conditions would produce a cumulus cloud with the lowest base?

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Explain why the surface air on the leeward side of a mountain can be drier than the surface air on the windward side. What is this effect called? Can you think of a location in the United States where this might actually occur?​

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The safest place to build an airport in a mountainous region is along a deep valley.​

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Billow clouds form along the top of a cloud layer when changes in wind speed and direction reach a critical value, and an inversion caps the cloud-forming layers.

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The rate at which the actual air temperature changes with increasing height above the surface is referred to as the ____ rate.​

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Which condition would be described as the most stable?​

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​Absolute instability results when the environmental lapse rate is ____ the ____ adiabatic rate.

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​Forced lifting along a topographic barrier is called ____.

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What is a stable atmosphere and how can it form?​

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​Convective instability associated with severe thunderstorms and tornadoes can be brought on by lifting a stable air layer whose surface is humid and whose top is dry.

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​Inversions that form as air slowly sinks over a large area are called ____________________ inversions.

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