When warm, moist, stable air flows upslope, it?

What decreases the stability of an air mass?

Warming from below decreases the stability of an air mass. Unstable air forced upward will cause clouds with considerable vertical development and associated turbulence. Moist, stable air flowing upslope will produce stratus type clouds.

What is a characteristic of stable air?

Stable air masses are also characterized by smooth, undisturbed air. This quality can be seen mainly by pilots or air travelers. People flying through stable air masses will not experience violent turbulence or disturbances as they would in unstable air masses.

What type of clouds will be formed if very stable moist air is forced upslope?

C) A stable layer of air. What type of clouds will be formed if very stable moist air is forced upslope? A) Stratified clouds with little vertical development.

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Which of the following are characteristics of a moist unstable air mass?

It is defined by the types of clouds, Correspondingly, which of the following are characteristics of a moist unstable air mass? Smooth air, poor visibility, fog, haze, or low clouds.

How do you know if air is stable or unstable?

If the air comes back to where it started, the atmosphere is stable. If the air continues to rise the atmosphere is unstable. In the figure above the air in the parcel has ended up colder and denser than the surrounding air. In this case the parcel would sink back to the ground.

What causes stable air?

Normally in the atmosphere, if an air parcel rises, it will be colder than its environment (due to expansion), and it will then sink back down again. This is called a stable airmass. This condensation releases heat, which warms the air parcel, which can cause the parcel to rise higher still.

What are four characteristics of stable air?

What are the characteristics of stable air? A—Good visibility; steady precipitation; stratus clouds. B—Poor visibility; steady precipitation; stratus clouds. C—Poor visibility; intermittent precipitation; cumulus clouds.

Which would increase the stability of an air mass?

Terms in this set (33) Indicates stability: stability of the atmosphere is determined by vertical movements of air. Warm air rises when the air above is cooler. Cooling from below: surrounding air is warmer, which would increase the stability of an air mass.

How do you determine the stability of the atmosphere?

In order to determine the stability of the atmosphere, meteorologists compare the temperature of a rising air parcel with the temperature of the air around it at the same level. To describe the temperature of the atmosphere surrounding air parcels, meteorologists use the environmental lapse rate.

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Which clouds have the greatest turbulence?

Although towering cumulus clouds are indications of great turbulence, the greatest turbulence is created by cumulonimbus clouds. Thunderstorms are produced from the development of cumulonimbus clouds through stages. The first stage is the cumulus stage, characterized by continuous updrafts.

What is moisture in the air called?

The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity. This amount of space in air that can hold water changes depending on the temperature and pressure.

What situation is most conducive to the formation of radiation fog?

Advection fog and upslope fog. What situation is most conducive to the formation of radiation fog? Warm, moist air over low, flatland areas on clear, calm nights.

What is an unstable atmosphere?

Air is considered unstable, in the lowest layers of an air mass when the air is warmer and or more humid than the surrounding air. When this occurs the air will rise, as that air parcel is warmer than the air surrounding it. In an unstable environment, the weather can change suddenly and can be violent.

What causes variations in altimeter settings?

What causes variations in altimeter settings between weather reporting points? friction between the wind and surface.

When there is a temperature inversion?

A temperature inversion occurs when a layer of warm air develops on top of a layer of cooler air. This warm layer, the inversion, acts like a cap that seals the cooler atmosphere beneath it.

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