WW2010
University of Illinois

WW2010
 
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> online guides
 
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Online Guides
 
  introduction
 
> meteorology
 
  remote sensing
 
  reading maps
 
  projects, activities

Meteorology
 
  introduction
 
  light, optics
 
  clouds, precipitation
 
> forces, winds
 
  air masses, fronts
 
  weather forecasting
 
  severe storms
 
  hurricanes
 
  el nino

Pressure, Winds
 
  introduction
 
  pressure
 
> coriolis force

User Interface
 
  graphics
> text

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Coriolis Force
an artifact of the earth's rotation

Once air has been set in motion by the Pressure Gradient Force, it undergoes an apparent deflection from its path, as seen by an observer on the earth. This apparent deflection is called the Coriolis Force and is a result of the earth's rotation.

As air moves from high to low pressure in the northern hemisphere, it is deflected to the right by the coriolis force.

This is process further demonstrated by the animated examples below.

QuickTime (2.0M)
MPEG (0.9M)
Moving Air Parcel:
The balancing of the pressure gradient and coriolis forces leads to the circulation observed around cyclones.

QuickTime (2.0M)
MPEG (2.1M)
Real Life Example:
This movie of a ball rolling across the surface of a rotating merry-go-round is a real life demonstration of the coriolis force.


Terms for using data resources. CD-ROM available.
Credits and Acknowledgments for WW2010.
Department of Atmospheric Sciences (DAS) at
the University of Illinois at Urbana-Champaign.