Atmospheric Circulation and Weather Systems

Question

Why is a stable airmass dry ?

Answer

When a warm tropical airmass moves over a cold surface, the lower layers are cooled. A surface inversion of temperature develops. The lower layers become stable under the compression of upper layers. There is no upward rising of air. Consequently, there is no process of condensation of clouds or rainfall. Hence a stable airmass is dry.

Sponsor Area