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Figure 6.2: Left: Where the temperature gradient is largest, the wind speeds are also greatest. At around 60 degrees latitude, this temperature gradient produces the polar jet stream, which consists of powerful westerly winds. Just as in the lab, the boundary of the dense air in the polar cell forms a sloped boundary with the less dense warm air from the Ferrel cell. Right: Wind speed as a function of pressure and latitude, showing how both powerful and contained the jet stream is.
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7 Polar Oceanic Front