1. Air Masses
Green/environment/Earth Day

2. Movement High to low pressure 3 convections cells
Polar Cold/Dry Tropical Warm/Moist

3. Types of Masses Maritime (m) Continental (c) Polar (P) Tropical (T)
Form over water
Continental (c)
Form over land
Polar (P)
Cold air mass
Tropical (T)
Warm air mass

4. North American Masses Polar Masses cP Canadian mP Pacific mP Atlantic
SE winds, Cold, and Dry
mP Pacific
Moist, cool, and fog
mP Atlantic
Cold, cloudy, and wet

5. North American Masses Tropical Masses mT Atlantic mT Gulf cT Mexico
Moist and cloudy
mT Gulf
Moist, hurricanes, and thunderstorms
cT Mexico
Clear, hot, and dry
mT Pacific
Heavy precipitation in winter