Jetstream Movement MET
A relatively straightforward question once you remember a simple rule. The higher the tropopause, the higher the jetstream and the stronger the wind. The tropopause is highest closest to the Equator. Put it together, and the closer to the Equator, the higher and the stronger the jetstream.
Now think about which jetstream you are talking about and which way it will move given the season. If it moves closer to the Equator, it moves up and strengthens. If it moves away from the Equator, it moves down and weakens.
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In the northern hemisphere, which direction do the jetstreams move in that hemisphere’s winter and what happens to their speed?