What conditions make atmosphere stable?
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.
What two conditions working together make the atmosphere the most unstable?
These two conditions, working together, will make the atmosphere the most unstable. heating or cooling of the ground. heat released if water vapor condenses. expanded to a larger volume.
In which situation are you most likely to find an absolutely stable atmosphere?
The atmosphere is always absolutely stable when the environmental lapse rate is less than the moist adiabatic rate.
What conditions would tend to make the atmosphere more or less stable?
When air stops rising because it is colder, the atmosphere is stable. When air continues to rise because it is warmer, the atmosphere is unstable. When the ELR is small, the atmosphere is stable, but when the ELR is large, the atmosphere is unstable. Heat surface: creates a bigger ELR and increases instability.
Which of the following would best create a stable atmosphere?
Which of the following would best create a stable atmosphere? air moving from a large body of land to a large body of water.
What is meant by stability of atmosphere?
Atmospheric stability is a measure of atmospheric status which determines whether or not air will rise, sink, or be neutral. In general stability refers to air tendency to rise or to resist vertical motion (Salby 1996; Houghton 2002; Hewitt and Jackson 2003; Lutgens and Tarbuck 2009; Hantel 2013).
What is atmospheric stability quizlet?
stability. -refers to the tendency of an air parcel, with its water vapor, either to remain in place or to change vertical position by ascending (rising) or descending (falling)
Which factor is affected the stability of atmosphere?
The value of the environmental lapse rate is one of the main factors that determines whether the atmosphere will be stable or unstable. Warming the air above the ground and/or cooling the air next to the ground will make the atmosphere more stable.
What is conditional stability?
Conditional stability occurs when the environmental lapse rate is between the moist and dry adiabatic rates. The atmosphere is normally in a conditionally unstable state. Many factors lead to instability.
What are the types of atmospheric stability?
There are two primary forms of atmospheric instability:
- Convective instability.
- Dynamic instability (fluid mechanics)
What weather is associated with stable air?
Stable air means that the weather is likely to be calm. It may rain or snow slowly and steadily, it may be sunny, but the weather will not change quickly. Unstable air means that the weather might change quickly with very little warning. Unstable air leads to sudden thunderstorms.
How can the stability of the atmosphere be determined quizlet?
In general, we determine the stability of air by comparing a rising parcel's temperature to that parcel's surroundings. An air parcel will rise in the atmosphere when its density is less than the density of its surroundings.
How is the stability of air determined quizlet?
Stability is determined by comparing the density of air parcel to the environmental air surrounding the parcel. Air parcels displaced upward that become more dense than their environment will return to their original position indicating a stable environment.
What is a characteristic of stable air?
Explanation: The following are characteristics of stable air: stratiform clouds continuous precipitation smooth air poor visibility.
What is associated with stable air?
Stable air means that the weather is likely to be calm. It may rain or snow slowly and steadily it may be sunny but the weather will not change quickly. Unstable air means that the weather might change quickly with very little warning. Unstable air leads to sudden thunderstorms.
How do you know if atmosphere is stable?
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.
How is the stability of air determined?
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.
What conditions cause a stable air mass quizlet?
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.
Which is a characteristic of a stable air?
Stable air means that the weather is likely to be calm. It may rain or snow slowly and steadily, it may be sunny, but the weather will not change quickly. Unstable air means that the weather might change quickly with very little warning. Unstable air leads to sudden thunderstorms.
What increases the stability of an air mass?
Cool air moving over a warm surface is heated from below, generating instability and increasing the possibility of showers. Warm air moving over a cool surface is cooled from below, increasing stability. If air is cooled to its dew point, stratus and/or fog forms.
What is a characteristic of a stable air?
Explanation: The following are characteristics of stable air: stratiform clouds continuous precipitation smooth air poor visibility.
What kind of weather is associated with stable air?
Stable air means that the weather is likely to be calm. It may rain or snow slowly and steadily it may be sunny but the weather will not change quickly. Unstable air means that the weather might change quickly with very little warning. Unstable air leads to sudden thunderstorms.