Air Masses and Fronts
Air mass basic imformation
Air masses are big pockets of air that are physically bonded together. The temperature is the same throughout the whole air mass, which is usually 1000 to 1500 miles wide! There are many different types of air masses, such as maritime tropical(warm and wet), continental tropical(warm and dry), maritime polar(wet and cold), continental polar(dry and cold), and a new kind of air mass called continental arctic.
Picture is from /www.meted.ucar.edu
Fronts are either cold or warm air that replaces the other. The warm air is always further up than the cold air. In a cold front the cold air forces the warm air up and away, but in a warm front the warm air comes in a sort of wave and crashes down on the cold air, forcing it away.