Discussion
Which effect does increasing latitude have on the geostrophic wind for a fixed pressure gradient?
Answer: A
Since the geostrophic wind is the pressure gradient force divided by \( f \), and \( f \) grows with latitude, the same isobar spacing corresponds to a weaker wind nearer the pole. The stronger Coriolis force balances the same pressure gradient at a lower speed. Nothing reverses at any latitude in the same hemisphere, and the effect is substantial: the same spacing gives roughly forty per cent more wind at thirty degrees than at sixty.
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