Discussion
Statement I: The Coriolis force is greatest at the poles.
Statement II: The Coriolis force is greatest at the equator.
In the light of the above statements, choose the correct answer.
Answer: A
Since the Coriolis parameter is proportional to the sine of the latitude, its horizontal effect grows from zero at the equator to a maximum at the poles. The second statement inverts this. The consequence is that tropical dynamics is governed by balances quite different from those of mid-latitudes, and that tropical cyclones require a minimum distance from the equator before rotation can organise them into a coherent vortex at all.
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