What makes an atmosphere unstable?

What makes an atmosphere unstable?

To be “unstable”, the lowest layers of an air mass must be so warm and/or humid that, if some of the air rises, then that air parcel is warmer than its environment, and so it continues to rise. This is called moist convection.

What determines whether air is stable or unstable?

lapse rate
What makes air stable or unstable? It is the vertical profile of temperature, or lapse rate of the atmosphere, which determines whether an air mass is stable or not. The temperature can be measured using an electronic thermometer attached to a helium-filled weather balloon released from the ground.

What is stable atmosphere and how can it form?

The atmosphere is said to be absolutely stable if the environmental lapse rate is less than the moist adiabatic lapse rate. This means that a rising air parcel will always cool at a faster rate than the environment, even after it reaches saturation.

How can the atmosphere be made more stable more unstable?

Warming the air above the ground and/or cooling the air next to the ground will make the atmosphere more stable. The ground and the air above it cool during the night. This steepens the environmental lapse rate and makes the atmosphere more unstable. Cooling air above the ground has the same effect.

Which of the following would be associated with stable atmospheric conditions?

Chapters 12 & 13 & 14

Question Answer
Which of the following would NOT be associated with stable atmospheric conditions? afternoon thunder showers
A parcel of air has a temperature of 0˚C as it crosses a mountain range at 3000 meters. If it descends, what will its temperature be when it reaches sea level? 30˚C

What are the conditions that determine atmospheric stability?

Three characteristics of the sounding then determine the stability of the atmospheric layer in which the parcel of air is embedded. These are: (1) The temperature lapse rate through the layer; (2) temperature of the parcel at its initial level; and (3) initial dew point of the parcel.

Which is not a necessary condition for condensation?

Which one of the following is NOT a necessary condition of condensation? High altitude, dew-point temperature reached, surfaces, saturation, water vapor. Which one of the following processes involves the greatest quantity of heat energy? Melting, sublimation, freezing, evaporation, condensation.

Which of the following is not a type of precipitation?

Answer: Which is not a form of precipitation? Heavy or light rain, sleet, snow, drizzle, and hail are all types of precipitation. However, fog and dew are not considered precipitation because these two processes are actually water condensing.

What are the three different criteria of atmospheric stability?

The variables are: pressure (P), temperature (T), mixing ratio (r), saturated mixing ratio (rs), potential temperature (θ), and wet-bulb potential temperature (θw).

What are some characteristics of unstable air?

What are characteristics of unstable air? Turbulence and good surface visibility.

What atmospheric conditions are necessary for condensation?

Two things must be present for condensation to occur: warm moist air, and cool surface temperatures below the dew point. The proper control of these two factors can minimize condensation.

What type of clouds form with unstable atmospheric conditions?

Clouds forming in such unstable environments are of the cumulus variety, which as you may recall, means “heap cloud.” Cumulus clouds are “heap clouds,” and have a bubbly, or billowy appearance.

What is a stable atmosphere?

A stable atmosphere is a condition of the atmosphere in which the temperature decrease with increasing altitude is less than the dry adiabatic lapse rate. Expert answered|jerry06|Points 85303|.

What is unstable atmosphere?

Atmospheric instability is a condition where the Earth’s atmosphere is generally considered to be unstable and as a result the weather is subjected to a high degree of variability through distance and time.

Is the atmosphere stable?

The atmosphere can also be stable or unstable. If it’s unstable, then clouds can form. The more unstable the atmosphere is, the more severe the weather could be. Clouds and storms form when pockets of air rise and cool. The air pockets won’t rise unless something starts them moving.

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