The weight of the air above an object exerts a force per unit
area upon that object and this force is called pressure. Variations
in pressure lead to the development of winds, which in turn
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.
Local wind systems such as land breezes and sea breezes will
also be introduced. The Forces and Winds module has been organized
into the following sections:
Introduces pressure, associated characteristics, and high and
low pressure centers. Pressure Gradient Force
A net force that is directed from high to low pressure.
The apparent deflection of objects due to the earth's rotation.
Winds that result from a balance of Coriolis and pressure gradient
Winds that blow parallel to isobars, but are not geostrophic.
How friction near the surface affects geostrophic and gradient
Boundary Layer Wind
More on how friction affects low level winds.
Atmospheric conditions that lead to the development of sea breezes.
Atmospheric conditions that lead to the development of land
Those who contributed to the development of this module