Download Wind

Wind
Global Wind
• Wind that travel long distances in steady
patterns over several weeks.
• Horse Lattitude- High pressure zones located 30
degrees north and 30 degrees south of the
equator.
• Doldrums- Low pressure zone near the equator.
• Trade Wind- blows from the east moving from
the horse latitudes towards the equator.
• Easterlies- Blow from the east moving from the
polar regions towards the Mid-Lattitude
• Westerlies- Blow from the west moving from the
Horse lattiudes towards the poles.
Global Winds
Local Winds
• Local Winds- Winds that change daily in a
regular pattern.
Brickfielder Very hot north-east summer wind that blows dust and sand across
Australia.
Chincook Warm, dry wind of the Rocky Mountains, USA. Welcomed by cattlemen
because it can remove snow cover very quickly. Named after a local Indian tribe.
Land Breezes
• Land Breeze- Occurs near shore lines at night.
Cool air blows out from land to the sea, where
warm rises and is sent back to the land.
Sea Breezes
• Sea Breezes- Warmer air rises over land during
the day and is sent towards the water. Then
the air cools and sinks down and sent towards
the land.
Jet Stream
• Flows in a wavy pattern in the upper
troposphere at high rates. Jet streams loop
north to south.
High/Low Pressure Systems
• High Pressure System- formed when air moves
around a high pressure center. Air moves
down the center and out.
– Large and change slowly
– Clear skies
• Low Pressure System- Formed when air moves
around a low pressure center. Air moves from
outside too the center and then up.
– Occurs around a warm and cold air boundaries
– Storms/Precipitation
Coriolis Effect
• Coriolis Effect- The wind patterns that are
caused by the spinning of the Earth.
– In the North they curve to the right
– In the South they curve to the left