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Vegetation zones Biomes OBSERVATION: Tropical forests, grasslands, deserts, tundra, etc.

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Presentation on theme: "Vegetation zones Biomes OBSERVATION: Tropical forests, grasslands, deserts, tundra, etc."— Presentation transcript:

1 Vegetation zones Biomes OBSERVATION: Tropical forests, grasslands, deserts, tundra, etc.

2 Variations in solar energy input drive global patterns of precipitation.

3 Uneven input of energy:

4 Warm air rises, cold air falls:

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7 Water-holding capacity of air:

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10 Warm air rises, zone of low pressure, rain:

11 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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13 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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16 You find deserts:

17 Deserts

18 Variations in solar energy input drive global patterns of winds.

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20 Wind = movement of air on the earth’s surface:

21 Wind deviation b/c of earth’s rotation and ball-shape:

22 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.

23 Patterns of atmospheric circulation:

24 Velocity at different latitudes.

25 Deviation of winds by the West-to-East rotation of the Earth:

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28 Atmospheric circulations Winds

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32 Application 1: Sierra Nevada Mountains.

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34 Application 2: Coastal and Cascade Range in Oregon and Washington.

35 Oregon and Washington

36 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.

37 Intertropical Convergence Zone

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39 ITCZ: Intertropical Convergence Zone (where NE and SE trade winds converge (doldrums)

40 Summer (July). Winter (January)

41 UNEVEN COOLING/HEATING OF LAND AND WATER. Summer warm cold Winter coldwarm Sea Land Sea Land

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43 Changing Trade winds over India.

44 Global patterns of ocean surface currents (gyrals)

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48 Surface temperatures oceans

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