The climate becomes colder at high elevations this characteristic is described by the dry adiabatic lapse rate is 10 �C per km ( 5.5 �F per 1000 ft ) of elevation or altitude.
12.
Once the CCL is determined, the surface temperature necessary to raise a mass of air to that height can be found by using the Dry Adiabatic Lapse Rate ( DALR ) to determine the potential temperature.
13.
The dry adiabatic lapse rate accounts for the effect of the expansion of dry air as it rises in the atmosphere and wet adiabatic lapse rates includes the effect of the condensation of water vapor on the lapse rate.
14.
In the Himalayas, the rate at which an air mass's temperature falls per kilometre ( 3, 281 ft ) of altitude gained ( the dry adiabatic lapse rate ) is 9.8 �C / km.
15.
Using the dry adiabatic lapse rate of around 10 �C ( 18 �F ) per kilometer, a theoretical temperature of an area below sea level would be about 40 �C ( 72 �F ) warmer than the temperature at sea level.
16.
The usual way of finding the LFC is to lift a parcel from a lower level along the dry adiabatic lapse rate until it crosses the mixing ratio line of the parcel : this is the lifted condensation level ( LCL ).
17.
When the air contains little water, this lapse rate is known as the dry adiabatic lapse rate : the rate of temperature decrease is ( per 1, 000 ft ) ( 3.0 �C / 1, 000 ft ).
18.
If the environmental lapse rate is larger than the dry adiabatic lapse rate, it has a superadiabatic lapse rate, the air is absolutely unstable a parcel of air will gain buoyancy as it rises both below and above the lifting condensation level or convective condensation level.
19.
This report contradicts the common idea that the Brookings Effect is a Chinook wind, as moisture does not appear to play a role in the moist adiabatic cooling of air on the windward side of a mountain range, followed by dry adiabatic warming on the lee side.
20.
If the environmental lapse rate is between the moist and dry adiabatic lapse rates, the air is conditionally unstable an unsaturated parcel of air does not have sufficient buoyancy to rise to the LCL or CCL, and it is stable to weak vertical displacements in either direction.
