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 ?
Use of buried temperature cells or a different surrogate site and adiabatic lapse rate might reveal that temperature does influence hydration across the range of elevations considered in this study.
According to rule number three, if a saturated parcel is lifted, it is assumed to remain saturated and will cool off at the moist adiabatic lapse rate. This lapse rate isn't constant like its dry counterpart, so the remainder of the parcel lapse rate (magenta line) will follow a curved, moist-adiabatic lapse rate.
As unsaturated air ascends, it expands and cools at the dry adiabatic lapse rate (DALR), which is three degrees C for every 1000 feet gain in altitude.

Full browser ?