During which of the following afternoon weather conditions do the greatest temperature differences occur between surface air and the air several metres above surface?

Question

Quizplus · Accepted Answer

The greatest temperature differences between the surface air and the air several meters above occur during clear, calm conditions. This is because the absence of clouds allows the ground to cool rapidly by radiation, and without wind, the cool air near the surface doesn't mix with the warmer air above, creating a strong temperature gradient.

During Which of the Following Afternoon Weather Conditions Do the Greatest