For a surface low to develop into a major storm system, the upper-level divergence of air must be ____ surface convergence of air.
A) greater than
B) less than
C) equal to
D) the same as

Question

Quizplus · Accepted Answer

For a low pressure system to develop and intensify, there needs to be more air moving away from the storm at upper levels (divergence) than air moving towards the storm at the surface (convergence). This creates a vertical circulation pattern that enhances the strength of the low pressure system. Therefore, the upper-level divergence of air must be greater than surface convergence of air.

For a Surface Low to Develop into a Major Storm