Graphic by: Yiqi Shao

The weight of the air above an object exerts a force upon that object and this force is called pressure. Variations in pressure lead to the development of winds that influence our daily weather. The purpose of this module is to introduce pressure, how it changes with height and the importance of high and low pressure systems. In addition, this module introduces the pressure gradient and coriolis forces and their role in generating wind.

The navigation menu (left) for this module is called "Pressure, Winds" and the menu items are arranged in a recommended sequence, beginning with this introduction. Click on the menu item of interest to go to that particular section. In addition, this entire web server is available in both a "graphics" and "text"-based mode and these options are accessible from the blue User Interface menu (left beneath the black navigation menus). More details about the navigation system, the user interface options or the WW2010 web server in general are available from About This Server.

Last Update: 5/18/97
Defines pressure and introduces its various units of measurement.

Coriolis Force
Describes the vertical distribution of particles in the atmosphere and how pressure decreases with height.

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.