1. U.S. Air Masses

2. Air Masses
Large body of air (1,000 miles wide, 4-5 miles high) that have same temp/moisture
High/Low pressure systems and jet stream move air masses
c  continental (land) m  maritime (water)
P  Polar, A Artic), T  Tropical

3. Continental Polar and Artic (cP, cA)
Comes from Canada, Alaska, Artic
Bitter cold/ dry in winter (cA)
Cool/ dry in summer (cP)
clear skies
Lake-effect snow

4. Continental Tropical (cT)
Comes from Southwest and Mexico
Hot and dry

5. Maritime Tropical (mT)
Comes from Gulf of Mexico, Caribbean, Southern Pacific
Warm, a lot of moisture, unstable (storms/hurricanes)

6. Comes from North Pacific, North Atlantic
Maritime Polar (mP)
Comes from North Pacific, North Atlantic
Cool and Moist
Low clouds/showers/snow in mountains

7. Pg. 84 in NB, Draw and label the 5 different air masses on map