adiabatic lapse rate


Also found in: Dictionary, Acronyms.

adiabatic lapse rate

[¦ad·ē·ə¦bad·ik ′laps ‚rāt]
(meteorology)
dry-adiabatic lapse rate

adiabatic lapse rate

adiabatic lapse rate
Dry adiabatic lapse rate.
The rate at which the temperature changes as the air rises or falls without the heat being taken away from or given to the air mass. The standard adiabatic lapse rate is 3°C/1000 ft, 5.4°F/1000 ft, or 9.8°C/km when air is dry (dry adiabatic lapse rate) and 1.6°C/1000 ft, 2.7°F/1000 ft, or 5.8°C/km when air is saturated (saturated adiabatic lapse rate). See also dry adiabatic lapse rate and saturated adiabatic lapse rate.
References in periodicals archive ?
It is also typically unstable in the dry air below the cloud deck as well, with lapse rates normally approaching the dry adiabatic lapse rate.
The lapse rate above and below these altitudes suggest the potential for turbulence due to a nearly dry adiabatic lapse rate (3 degrees per 1,000 feet).

Full browser ?