Since we know the difference in height between these two locations, using the atmospheric lapse rate equation provided above, predict the temperature difference between the two locations. (pay attention to units! . round to 2 decimal places)

a) Difference between the two mean temperatures = 16°C

b) The temperature difference between the two locations, according to the lapse rate equation is 23.45°C

c) The true temperature difference is lower than that predicted by the temperature lapse rate formula.

Explanation: a) Difference between the two mean temperatures = 25 - 9 = 16°C

b) The environmental lapse rate (ELR), is the rate of decrease of temperature with altitude in the stationary atmosphere at a given time and location.

The atmospheric temperature lapse rate as defined by the International Civil Aviation Organization (ICAO) for an International Standard Atmosphere is = 6.5°C/km

For this question, distance between the two points is 3613 m = 3.613 km

Temperature difference = 6.5°C/km × 3.613km = 23.45°C.

c) The true difference, 16°C, is less than the predicted difference, 23.45°C.

QED!