WW2010
University of Illinois

WW2010
 
  welcome
 
> online guides
 
  archives
 
  educational cd-rom
 
  current weather
 
  about ww2010
 
  index

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

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

Clouds, Precipitation
 
  introduction
 
> mechanisms
 
  precip processes
 
  high level clouds
 
  mid level clouds
 
  low level clouds
 
  vertically developed
 
  other cloud types

Mechanisms
 
  convection
 
  convergence
 
> orographic
 
  fronts

User Interface
 
  graphics
> text

NOTE: We've guessed that you're not using a client that supports colored tables and have tried to compensate. Low graphics mode looks much better on clients that do... we recommend switching to Netscape 3.0 or Microsoft Internet Explorer.
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Orographic Lifting
forced by the earth's topography

When air is confronted by mountains, it cannot simply go through them, As the air ascends the mountain, the air cools as it rises and if it cools to its saturation point, the water vapor condenses and a cloud forms.


These clouds are called orographic clouds, which develop in response to the lifting forced by the topography the earth.

[Image: lee mountain wave clouds (78K)]


The exact type of cloud that develops depends upon the air's moisture content and stability.


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.