Lecture 2-28 grg sec2

Lecture 2-28 grg sec2 - Lecture 2-28 Introduction to Wind...

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Lecture 2-28 Introduction to Wind Newton’s 1 st Law of Motion An object at rest will remain at rest and an object in motion will remain in motion (and will travel at a constant velocity along a straight line) as long as no force is exerted on the object Newton’s 2 nd Law of Motion The force exerted on an object equals it’s mass times the acceleration produced (F=ma) Newton’s 3 rd Law of Motion For every action, there is an opposite and equal reatioin Atmospheric Forces that Cause Winds to Blow Pressure gradient force (High pressure vs. Low Pressure) H L Coriolis Force (Deflection caused by rotating object) CF only affects wind direction not Speed Amount of Deflection depends upon… -Rotation of Earth -The Latitude strong at Poles(felt more greatly at H & L latitudes),negligent to absent at equator -The Object’s speed Increase Wind speed = Increase CF (ex. Hurricane) In Northern Hemisphere: CF causes a RIGHTWARD deflection of moving air particles & vice versa for S. Hem.
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Lecture 2-28 grg sec2 - Lecture 2-28 Introduction to Wind...

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