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Published byJulian Williamson Modified over 9 years ago
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Vegetation zones Biomes OBSERVATION: Tropical forests, grasslands, deserts, tundra, etc.
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Variations in solar energy input drive global patterns of precipitation.
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Uneven input of energy:
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Warm air rises, cold air falls:
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Water-holding capacity of air:
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Warm air rises, zone of low pressure, rain:
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Rising air or low pressure at the equator. Falling air or high pressure at 30 latitude. Descending air warms, carries more water and dries the environment.
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It will rain: 1.Areas of permanent low pressure (equatorial doldrums, and 30 latitude). 2.When a cold and warm front collide. 3.When air crosses a mountain range.
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You find deserts:
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Deserts
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Variations in solar energy input drive global patterns of winds.
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Wind = movement of air on the earth’s surface:
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Wind deviation b/c of earth’s rotation and ball-shape:
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Housekeeping items: 1.Bring your computer this afternoon if you have EXCEL loaded. I do not have Excel 2013! 2.Read on VAULT: Tropical rainforest, Sloth, Strangler Figs, Ant Bird.
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Patterns of atmospheric circulation:
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Velocity at different latitudes.
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Deviation of winds by the West-to-East rotation of the Earth:
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Atmospheric circulations Winds
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Application 1: Sierra Nevada Mountains.
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Application 2: Coastal and Cascade Range in Oregon and Washington.
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Oregon and Washington
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A wet (monsoon) and dry season of South East Asia: 1.Large seasonal shift of the “equatorial” hotspot: Intertropical Covergence Zone (ITCZ). 2.Seasonal reversal of low and high pressure zone over the Himalayan mountains.
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Intertropical Convergence Zone
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ITCZ: Intertropical Convergence Zone (where NE and SE trade winds converge (doldrums)
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Summer (July). Winter (January)
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UNEVEN COOLING/HEATING OF LAND AND WATER. Summer warm cold Winter coldwarm Sea Land Sea Land
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Changing Trade winds over India.
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Global patterns of ocean surface currents (gyrals)
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Surface temperatures oceans
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