UNI101Y1 Chapter Notes - Chapter 4: Ocean Current, Humboldt Current, Atmospheric Circulation

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Thus, as it moves north, it gets far ahead to the east relative to the earth"s surface creating westerly winds. The trade winds fall behind the rotation of the earth as it moves south, veering west. Thus, temperate weather tends to move w to e. A more powerful one forms where the ferrel and polar cells meet. Have tremendous, but unpredictable effect on the weather. Iinntteerrttrrooppiiccaall ccoonnvveerrggeennccee is the region where surface currents of air from the northern and southern subtropics meet near the equator and begin to rise under the warming influence of the sun. The tropics are more humid not because there is more water there, but because water cycles more rapidly in the atm there (due to the heating effect of the sun) When air is cooled as it rises and expands, it causes precipitation because colder air has a lower ewvp.

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