MARN 1002 Lecture Notes - Lecture 14: Speed, Intertropical Convergence Zone, Jet Stream
22 Oct 2018
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Document Summary
If the earth didn"t rotate, we would have 4 temperature-driven convection cells (along one meridian) A given point at earth"s equator moves faster than a point closer to either pole. Image: tangential speed of earth"s surface due to rotational motion. As wind or water moves from a latitude close to the equator to a latitude further from the equator, it moves to a latitude with a smaller circumference and lower speed. If you shot an object from the equator towards one of the poles, it had a higher initial eastward velocity than the point it"s moving towards, so you will miss your target if you try to shoot it. Convection cells are like belts around the earth. Wind directional names show the direction they come from. Current directional names show the direction they are going to. A high altitude wind system that is forced by high and low-pressure areas on the surface of the earth.
