Discussion
Match each uplift mechanism with the precipitation it produces.
List I
A. Convective
B. Orographic
C. Frontal
D. Convergent
List II
1. widespread moderate rain along a boundary
2. showers and thunderstorms, often intense and local
3. the persistent rainfall of the ITCZ
4. heavy rain on the windward slope of a range
Answer: B
Correct answer: A-2, B-4, C-1, D-3
Each mechanism lifts air in a different way and the rainfall reflects it. Convection lifts a narrow column rapidly, giving intense local showers and thunderstorms. Orographic lifting is forced by terrain and concentrates heavy rain on the windward slope. A front lifts a deep layer gently over a long boundary, giving widespread moderate rain. And large-scale convergence sustains the persistent rainfall of the intertropical convergence zone.
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