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.
12.
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 ).
13.
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 ).
14.
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.
15.
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.
16.
The air crossing over the lake by the evening of November 17 was at 850 hectopascals at the eastern end of the lake and even colder at its western end; this lapse rate was nearly double that of the dry adiabatic lapse rate and resulted in a very unstable atmosphere at the lower levels . before reverting to the same synoptic setup as before.
17.
Dry "'microbursts "', produced by high based thunderstorms that generate little to no surface rainfall, occur in environments characterized by a thermodynamic profile exhibiting an inverted-V at thermal and moisture profile, as viewed on a High Plains of the United States ) of a dry microburst environment that comprised three important variables : mid-level moisture, a deep and dry adiabatic lapse rate in the sub-cloud layer, and low surface relative humidity.
