Graphic by: Yiqi Shao

The purpose of this module is to introduce air masses, where they originate from and how they are modified. Clashing air masses in the middle latitudes spark interesting weather events and the boundaries separating these air masses are known as fronts. This module examines fronts, with detailed explanations about cold fronts and warm fronts. Finally, different types of advection are introduced; temperature, moisture and voriticity advection. The Air Masses and Fronts module has been organized into the following sections: