The standard altitude at which air temperature is measured is usually about ___ above the ground surface.
A) 120 m
B) 12.4 m
C) 4 m
D) 1.2 m
E) 0.12 m

Question

Quizplus · Accepted Answer

The standard altitude at which air temperature is measured is usually about 1.2 meters (4 feet) above the ground surface. This is because the height of the sensor is important in minimizing the effects of ground heating and cooling on the measurement. At a height of 1.2 meters, the sensor is high enough to be above any immediate influence of the ground surface, but low enough to be representative of the air temperature at human height.

The Standard Altitude at Which Air Temperature Is Measured Is