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[Image: pressure home page logo (85K)]
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 play a
significant role in shaping our daily weather.
The purpose of this module is to introduce
pressure, how it
changes with height and how it is represented on
weather maps. In addition, this module will
introduce high and
low pressure systems and their associated features.
The navigation menu (left) for this module is called "Pressure Module"
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. More details about the navigation system or the WW2010 web server
in general are available
About This Server.
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Definition
Defines pressure and introduces its various units of measurement.
Pressure with Height
Describes the vertical distribution of particles in the atmosphere and
how pressure decreases with height.
Isobars
Lines of constant pressure used to depict the pressure field on weather
maps.
High Pressure Centers
Introduces high pressure centers, associated winds and weather
conditions.
Low Pressure Centers
Introduces low pressure centers, associated winds and weather
conditions.
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![[Image: pressure home page logo (85K)]](/guides/mtr/prs/gifs/home.gif){kind=link}