Temperature,altitude and average lapse rate in the troposphere Which of the following is correct regarding lapse rates in the troposphere? A)The term "normal (average)lapse rate" refers to the actual lapse rate in effect at any particular time. B)The environmental lapse rate refers to the actual lapse rate,which varies in space and time. C)The normal lapse rate is always the same as the dry adiabatic rate (DA R). D)Temperatures generally increase with altitude in the troposphere. E)The average lapse rate is 5°C/km (2.7°F /1000 ft. ;1.5°C/1,000 ft. ).

Question

Quizplus · Accepted Answer

The environmental lapse rate refers to the actual lapse rate, which varies in space and time. The normal lapse rate refers to the average lapse rate over a particular region and time period. The dry adiabatic rate (DAR) is the rate at which unsaturated air cools adiabatically as it rises or warms adiabatically as it sinks; it is not the same as the normal lapse rate. Temperatures generally decrease with altitude in the troposphere, so D is incorrect. The given statement about the average lapse rate is true, but it is not a statement about the relationship between normal and environmental lapse rates.

Temperature,altitude and Average Lapse Rate in the Troposphere