Question

Describe each of the four mechanisms that cause air to rise.

Answer 1

(1) orographic lifting, where air is forced to rise over a mountainous barrier,
(2) frontal wedging, where warmer, less dense air is forced over cooler, denser air along a front,
(3) convergence, a pileup of horizontal air flow resulting in an upward flow, and
(4) localized convective lifting, where unequal surface heating causes localized pockets of air to rise because of their buoyancy.

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