Oklahoma Mesonet
Oklahoma Climatological Survey: Air Masses
This Oklahoma Climatological Survey explores how air masses form, as well as the weather formations, which tend to appear on the edges of these masses in what is known as a front.
Other
Pete's Potpourri: Numerical Weather Prediction in Faq
This site discusses weather forecast computer modeling, or numerical weather prediction (NWP). It also discusses the development of the concept of front and air masses, as well as which computer forecast models are currently being used...
Other
Physical geography.net: Introduction to the Atmosphere
A very detailed description of air masses, how they move and interact, and what weather takes place when this happens.
Oklahoma Mesonet
University of Oklahoma: Overview of Meteorology
The University of Oklahoma explores numerous types of weather and atmospheric changes, as well as the reasons behind them. Content details the four seasons, common meteorological variables, the vertical structure of the atmosphere, how...
Idaho State University
Global Wind Systems [Pdf]
A great description of the global scale circulation and heat energy. Discusses a single-cell model, a three-cell model, jet streams and more.