Chapter08c

# Chapter08c - Air Pressure and Winds III Coriolis...

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Air Pressure and Winds III

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Coriolis Force (Effect) It is an  apparent  force; Due to the  rotation  of the coordinate system (Earth); It makes a moving object  deflect  from a straight line even in the  absence of any forces acting on it.
Coriolis Force Demonstration Rotating table A B Da s he d line  - the  traje c to ry o f the  c ha lk with re s pe c t to  a  no n-ro ta ting  tab le . S o lid line  - the  tra je c to ry o f the  c halk with re s pe c t to  a ro tating  tab le .

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The Magnitude of the Coriolis Force The  rotation  of the Earth The faster the planet rotates the  bigger the force The  speed  of the object Bigger V -> bigger effect The  latitude : Min. at the equator Max. at the poles  φ sin 2 V m F co =
φ sin 2 V m F co = The  speed  of the object The  latitude : Min. at the equator Max. at the poles  Coriolis force as a function of:

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The Direction of the Coriolis Force In the  Northern hemisphere  the deflection is to the  right  of the  direction of motion. In the  Southern hemisphere  the deflection is to the  left  of the direction  of motion. The winds in the Northern hemisphere will be deflected to the right  and in the Southern hemisphere they will be deflected to the left. Hurricanes spin differently in the Northern and Southern  hemisphere
The Coriolis Force and the Earth The Coriolis effect is important when moving over LARGE distances  (air plane travel), with large velocities, away from the equator.

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## This note was uploaded on 01/26/2012 for the course MET 1010 taught by Professor Matchev during the Spring '08 term at University of Florida.

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Chapter08c - Air Pressure and Winds III Coriolis...

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