Physical Geography 101
Cyclones and Anticyclones
Low Pressure Centers
High Pressure Centers
Air Moves outward
Replaced by descending air
What happens to this air as it descends?
Air moves inward
Converging, rising air
What happens to this air as it rises?
Wave Cyclone – forms along Polar Front in mid- and high-latitudes.
Fronts: Sharp boundaries between air masses
Cold air mass moving into a zone occupied by a warm air mass
Warm air mass moving into a zone occupied by a cold air mass
Cold Front overtakes a Warm Front
Formation of a Wave Cyclone
Two large anticyclones from along Polar Front
Low pressure trough develops where winds converge.
Stationary Front forms
Low Pressure center develops.
Rotation causes Cold Front to move around low pressure.
Cold Front overtakes Warm Front.
Occluded Front forms.
Occluded Front breaks down.
Global Storm Tracks
Typical Tracks in N. America