PBS
Pbs Learning Media: Water Vapor Circulation on Earth
This simulation from the National Center for Atmospheric Research portrays annual patterns in water vapor and precipitation across the globe, illustrating general circulation patterns as well as seasonal and regional variation. [4:52]
National Weather Service
National Weather Service: Jet Stream: The Jet Stream
The concept of jet streams is explained on this site. Read about why jet stream winds blow from west to east, what the polar jet and subtropical jet are, the role that the rotation of the Earth plays, etc.
PBS
Pbs Learning Media: Global Weather Machine
In this illustrated essay from NOVA Online, explore the cyclical process of weather creation and the effects of El Nino on the global weather system.