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Adiabatic lapse rate

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The Adiabatic lapse rate is the rate of temperature change that occurs in an atmosphere as a function of elevation, assuming that air behaves adiabatically. This term is most commonly used to refer to Earth's atmosphere.

 


adiabatic lapse rate"In most contexts, same as dry-adiabatic lapse rate. See also saturation-adiabatic lapse rate.

Adiabatic lapse rate - how quickly the temperature of a moving parcel of air changes, even though no heat enters or leaves it.

Adiabatic Lapse Rate
The rate of decrease of temperature experienced by a parcel of air when it is lifted in the atmosphere under the restriction that it cannot exchange heat with its environment.

dry adiabatic lapse rate: the rate at which an unsaturated parcel of air will decrease in temperature as it moves through the atmosphere. The rate is a decrease of about 9.767°C per kilometer upwards.

Dry adiabatic lapse rate Rising unsaturated (clear) air parcels cool at the rate of about 10 Celsius degrees per 1000 m of uplift (or 5.5 Fahrenheit degrees per 1000 ft).

Dry Adiabatic Lapse Rate
The rate at which the temperature of a parcel of dry air decreases as the parcel is lifted in the atmosphere. The dry adiabatic lapse rate (abbreviated DALR) is 5.5?Ǭ?F per 1000 ft or 9.8?Ǭ?C per km.
Dry Crack ...

dry adiabatic lapse rate—The rate of decrease of temperature with height when unsaturated air is lifted adiabatically (due to expansion as it is lifted to lower pressure). See adiabatic process.

Moist Adiabatic Lapse Rate
(abbrev. MALR)- The rate at which the temperature of a parcel of saturated air decreases as the parcel is lifted in the atmosphere.

Dry Adiabatic Lapse Rate
NOAA National Weather Service - Cite This Source - This Definition ...

Dry Adiabatic Lapse Rate
The rate at which the temperature of unsaturated air changes as it ascends or descends through the atmosphere. Approximates to some 10 degrees Celsius per kilometre.
Dust Devil ...

Conditionally Unstable AirAn atmospheric condition that exists when the environmental lapse rate is less than the dry adiabatic lapse rate but greater than the moist adiabatic lapse rate.

Stability: Absolute Instability: Adiabatic lapse rate greater than 5 degs. F.,3.0 degs. C. per 1,000 feet. Stability: Absolute Stability Isothermal: Temperature remaing the same from surface to some point aloft.

The dry adiabatic lapse rate is about 5.5 degrees F per 1000 feet, and the wet adiabatic lapse rate varies between 2 and 5 degrees F per 1000 feet.

ABNDTAbundantAbsolutely Stable AirAn atmospheric condition that exists when the environmental lapse rate is less than the moist adiabatic lapse rate.

As air rises up the western side of the Great Dividing Range it cools at the dry adiabatic lapse rate (DALR).

The adiabatic lapse rate (or dry adiabatic lapse rate) is the normal rate of change (9.8 degrees C/km) for a dry parcel of air that is moved up or down and cools or warms as the pressure changes. The wet (moist) adiabatic lapse rate (4.

if the air is unsaturated (air temperature > dew point temperature), the cooling/warming will be at a rate of 3 degC per 1000 ft (or 10 degC per 1 km): This is known as the Dry Adiabatic Lapse Rate/DALR; ...

When the lapse rate of a column of air is greater than the dry adiabatic lapse rate. The term absolute is used because this applies whether or not the air is dry or saturated.
Related term: instability
ABSOLUTE TEMPERATURE SCALE ...

ABSOLUTE INSTABILITY
When the lapse rate of a column of air is greater than the dry adiabatic lapse rate. The term absolute is used because this applies whether or not the air is dry or saturated.
Related term: instability ...

Convective temperature - The temperature to which air must be heated to generate convection solely by heating. The air will have a dry adiabatic lapse rate from the surface to the LFC.

See also: Temperature, Lapse Rate, Water, Adiabatic, Air