1. Chapter 7: Atmospheric Circulations Scales of atmospheric motion Eddies of different sizes  Microscale- chimney smoke, leaves in a corner of a building  Mesoscale- city smoke, a sea breeze/land breeze  Synoptic scale- weather fronts, winter storm

4. Local Wind Systems Thermal Circulations  Sea breeze  Land breeze Seasonal winds  Santa Ana winds Warm dry, fall season winds  The monsoon Seasonal reversal in winds Wet summer/Dry winter Most pronounced in Asia Does occur in Southwest U.S.

5. Mountain/Valley Breezes Valley Breezes  Mountain slopes heat up  Air rises along the mountain slopes  Upslope valley breezes  Clouds may form along mountains  At night, slopes begin to cool  Air along slopes sinks into the valleys  Colder air settles into valleys

6. Desert winds Hot desert air  Haboobs  Dust devils  Dust storms These wind storms are quite common in the deserts….

7. Focus on “Readings” Eddies and “Air Pockets” Snow Eaters and Rapid Temperature Changes

8. Global Winds Intertropical Convergence Zone (ITCZ)  Equatorial low pressure, rising air  Doldrums Sub tropical high pressure zones 30°  Horse Latitudes  Sinking air Westerlies  Jet stream winds Polar easterlies  Sinking air

9. Polar Jet Stream North Pacific High Pressure Equatorial Low Pressure

11. Polar Jet Stream Pacific High

13. End of Chapter 7 Key Terms Questions for Review: 1, 4, 5a-b, 6, 7, 8, 9a-b, 10, 11, 12, 13, 14, 15, 16, 17, 18a- c, 19, 20, 22. Questions for Thought/Exploration 7, 9, 10,