Air Masses Jet Stream Pressure Systems Air Masses

-Air Masses - Jet Stream - Pressure Systems

Air Masses Continental – air mass forms over land or ice (dry) Maritime – air mass forms over water (moist) Legend c. A - Continental Arctic c. P – Continental Polar c. T –Continental Tropical m. P - Maritime Polar m. T - Maritime Tropical Air Temperature Very Cold Cool Hot Warm

• Types of Air Masses (4) http: //video. about. com/weather/Types-of-Air. Masses. htm • Summer and Winter Movement of Air Masses http: //www. canadiangeographic. ca/atlas/themes. aspx? id=weather&sub=w eather_basics_begins&lang=En

c. A c. P m. P c. T m. T

Pressure Systems & Jet Stream • Air moves from West to East across Canada. • It does shift North or South as can be seen by the baby blue line. (Jet stream) Cooler Warmer • Above the line there is cooler air and below there is warmer air. • High Pressure systems have few clouds (air is moving down) • Low Pressure systems have more cloud (air is moving upwards)

• High and Low Pressure (simple diagram) • http: //www. geogonline. org. uk/images/high andlow. gif

Comparison Forms over land or water? Moisture Content - Moist - Moderate - Dry Temperature - Cold - Cool - Warm - Hot Strongest - Spring - Summer - Fall - Winter or all Continental Arctic land Dry Cold Winter Continental Polar land - moderate Cool Winter Continental Tropical land - dry Hot Summer Maritime Polar Water - moist Warm & Cool All Seasons Maritime Tropical Water - moist Warm All Seasons

Interactive Climate Diagrams http: //educypedia. karadimov. info/education /climateanimations. htm