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.

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.