Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> "At night, the winds generally die out." This is because

• A. Convection during daytime causes mixing of air and therefore, spreads up the wind near the surface.
• B. Temperature inversion prevents any exchange of air from the upper layer to the lower layer
• C. The coriolis deflection is greater during daytime
• D. The conditions are quiet during night time.

Answer 1

The correct option is B Temperature inversion prevents any exchange of air from the upper layer to the lower layer

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Temperature inversion is an increase in temperature with height. During the temperature inversion the normal vertical temperature gradient is inverted such that the air is colder near the surface of the earth. The cold air which is near the surface will be stable and prevents any upward and lateral movement. It suppresses the convection by acting as a cap.