Feb11_09_AtmosCirculation1

Feb11_09_AtmosCirculation1 - Atmospheric Circulation...

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Atmospheric Circulation
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Uniqueness of Earth’s friendly atmosphere vital to the survival of living organisms!
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Coriolis Effect Why? We need to describe circulations in the ocean and atmosphere relative to the coordinate fixed to the rotating Earth. Newton's first law of motion: An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Inertial reference frame, inertial reference coordinates Rotating reference frame, rotating reference coordinates
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Intended and apparent paths of an object thrown from North Pole
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Intended and apparent paths of an object thrown from South Pole
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Coriolis Effect
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To an observer standing on a rotating Earth, the Coriolis force pulls an object to the right in the northern hemisphere , and to the left in the southern hemisphere . This effect arises due to the fact that we describe motions in the atmosphere and ocean relative to a coordinate system fixed to the surface of the earth
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Feb11_09_AtmosCirculation1 - Atmospheric Circulation...

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