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Chapter 6 Atmospheric and Oceanic Circulations

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Presentation on theme: "Chapter 6 Atmospheric and Oceanic Circulations"— Presentation transcript:

1 Chapter 6 Atmospheric and Oceanic Circulations
Geosystems 6e An Introduction to Physical Geography Robert W. Christopherson Charles E. Thomsen

2

3 Atmospheric and Oceanic Circulations
Wind Essentials   Driving Forces Within the Atmosphere   Atmospheric Patterns of Motion   Oceanic Currents  

4 Wind Essentials Air Pressure and Its Measurement
Mercury barometer Aneroid barometer Wind: Description and Measurement   Wind Anemometer Wind vane Global Winds  

5 Barometers Figure 6.2

6 Air Pressure Readings Figure 6.3

7 Wind Vane and Anemometer
Figure 6.4

8 Wind Portrait of the Pacific Ocean
Figure 6.6

9 Driving Forces Within the Atmosphere
Gravity Pressure Gradient Force   Coriolis Force   Friction Force  

10 Pressure Gradient Figure 6.7

11 Pressure + Coriolis + Friction
Figure 6.8

12 Coriolis Force Figure 6.9

13 500 mb Pressure Map Figure 6.10

14 Atmospheric Patterns of Motion
Primary High-Pressure and Low-Pressure Areas   Upper Atmospheric Circulation   Local Winds   Monsoonal Winds  

15 Global Barometric Pressure
Figure 6.11

16 Global Barometric Pressure
Figure 6.11

17 Primary High-Pressure and Low-Pressure Areas
Equatorial low-pressure trough Polar high-pressure cells Subtropical high-pressure cells Subpolar low-pressure cells

18 Equatorial Low-pressure Trough
Intertropical convergence zone (ITCZ) Trade winds

19 Polar High-pressure Cells
Polar easterlies Antarctic high

20 Subtropical High-pressure Cells
Westerlies Bermuda high Azores high Pacific high Figure 6.14

21 Subpolar Low-pressure Cells
Aleutian low Icelandic low Polar front

22 General Atmospheric Circulation
Figure 6.13

23 General Atmospheric Circulation
Figure 6.13

24 Constant Isobaric Surface
Figure 6.16

25 Upper Atmospheric Circulation
Rossby waves Jet stream

26 Rossby Waves Figure 6.17

27 Jet Streams Figure 6.18

28 Local Winds Land-sea breezes Mountain-valley breezes Katabatic winds

29 Land-Sea Breezes Figure 6.19

30 Mountain-Valley breeze
Figure 6.20

31 Monsoonal Winds Figure 6.21

32 Oceanic Currents Surface Currents   Deep Currents  

33 Major Ocean Currents Figure 6.22

34 Deep Currents Figure 6.23

35 Geosystems 5e An Introduction to Physical Geography
End of Chapter 6 Geosystems 5e An Introduction to Physical Geography Robert W. Christopherson Charlie Thomsen


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