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. stationary, lens/almond-shaped clouds, which indicate the crests of standing mountain waves.
Which would decrease 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.
Which would increase the stability of an hermas?
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. stationary, lens/almond-shaped clouds, which indicate the crests of standing mountain waves.
Which of the following is a trait of a stable atmosphere?
Explanation: The following are characteristics of stable air: stratiform clouds, continuous precipitation, smooth air, poor visibility .
What measurement can be used to determine stability of atmosphere?
The degree of stability or instability of an atmospheric layer is determined by comparing its temperature lapse rate , as shown by a sounding, with the appropriate adiabatic rate. A temperature lapse rate less than the dry adiabatic rate of 5.5°F.
How do I know if my air parcel is stable or unstable?
To determine the stability of an air parcel, one compares its temperature to the temperature of the surrounding air mass . If the air parcel’s temperature is less than the temperature of the surrounding air mass, it is denser than the surrounding air and therefore has a tendency to sink.
How do you know if a 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 are the 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.
What will happen if a stable air mass is forced aloft?
What will happen if a stable air mass is forced aloft? It will sink back toward Earth’s surface . Under what condition is air said to be conditionally unstable? The environmental lapse rate is between the dry adiabatic rate and the saturated adiabatic rate.
What would decrease the stability of an air mass quizlet?
Clouds with considerable vertical development and associated turbulence. What would decrease the stability of an air mass? Warming from below .
What are the characteristics of an unstable atmosphere?
Poor visibility, intermittent precipitation, and cumulus-type clouds. C) Poor visibility, steady precipitation, and stratus type clouds. What are some characteristics of unstable air? A) Turbulence and poor surface visibility .
Which is an indicator of stable air?
Because stable air masses are, by nature, calm and free of violent disturbances, they are often marked by the appearance of stratiform clouds or fog . Stratiform clouds can be identified by their smooth, sheetlike nature and do not build vertically like clouds found in unstable air masses with convective activity.
What are the characteristics of stable air in terms of visibility & precipitation?
Explanation: characteristics of stable air: stratiform clouds, continuous precipitation, smooth air, poor visibility . A and B are incorrect because of the following characteristics of unstable air: cumulus clouds, showery precipitation, turbulence, good visibility. standing lenticular clouds.
What are the three types of atmospheric stability?
Three Types of Stability
An unstable atmosphere will enhance or encourage the vertical movement of air. A stable atmosphere will suppress or resist vertical motion. A neutral atmosphere will neither suppress nor enhance vertical motion.
What two conditions working together make the atmosphere the most unstable?
The difference between the cold parcel air and the warmer surroudings gets larger and larger with increasing altitude. Sunlight warms the ground and the air next to it during the day. This steepens the environmental lapse rate and makes the atmosphere more unstable. Cooling air above the ground has the same effect.
Which factor is most significant in the formation of clouds in the atmosphere?
Condensation is the process by which water vapor in the air is changed into liquid water. Condensation is crucial to the water cycle because it is responsible for the formation of clouds.
