EESB03H3 Chapter 8: Chapter 8 Air Pressure and Winds
9 Feb 2017
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They transport heat from for regions to cold regions. Moisture and pollution are also carried with wind. Air has mass, and winds redistribute it to equalize pressure. Advection is the horizontal movement of air properties by wind. In atmosphere, the winds blow in an attempt to equalize imbalances in air pressure. Air pressure results from the weight of the air above a given level. Air pressure is the force of gravity acting on a mass over air above any level divided by the area of the column of air. At(cid:373)osphere is (cid:272)ro(cid:449)ded (cid:272)lose to the earth"s surface, which causes air pressure to decrease with height, rapidly at first, and then more slowly with higher altitudes. Adding air to the column would result in increasing air pressure, and if we removed air from the column, the air pressure would decrease. When the molecules move slowly, they crowd closer and become denser.
