This course focuses on air masses and fronts—key atmospheric phenomena that significantly impact aviation. An air mass is a large body of air in which temperature and humidity remain relatively uniform at a given altitude.

As air masses move across the Earth's surface, they can transport distinct thermal and moisture characteristics over long distances. When one air mass replaces another, it often results in noticeable and sometimes dramatic changes in weather. The boundaries between air masses are known as fronts. The course provides detailed explanations of air masses, with a particular focus on cold and warm fronts.