ESS228
Prof. Jin-Yi Yu
Structures of the Normal Modes
qThe structures of the normal modes can be obtained by solving this equation (from previous slide):
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qOr, we can use the concept of the one-layer shallow water model, where the phase speed (c) of the gravity wave is related to the depth of the shallow water (H):
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q Using this concept, we can assume each of the normal mode behaves like the one-layer shallow water with a “equivalent depth” of He:
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Solution 1
(brotropic mode)
Solution 2
(baroclinic mode)