chapter 6 cont'd - Chapter 6 Atmospheric and Oceanic...

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Chapter 6 Atmospheric and Oceanic Circulations
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Topics Primary High-Pressure and Low-Pressure Areas Upper Atmospheric Circulation Ocean Circulation Patterns
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Four Primary Atmospheric Pressure Areas Equatorial low-pressure trough (intertropical convergence zone) Subtropical high-pressure cells Subpolar low-pressure cells Polar high-pressure cells
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Global Barometric Pressure Figure 6.11 1. Equatorial low-pressure trough (Intertropical convergence zone ) 3. Subpolar low pressure cells 2. Subtropical high pressure cells 4. Polar high pressure cells (not shown)
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Barometric Pressure Along a Meridian L L L H H H H Subtropical high-pressure cell Intertropical convergence zone Subpolar low-pressure cell Polar high-pressure cell 90 ° N 30 ° S 0 ° 60 ° S 90 ° S 60 ° N 30 ° N
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General Troposphere Circulation Figure 6.13
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Troposphere Circulation (1) Figure 6.13 1. Equatorial low-pressure trough Warm, converging, ascending air Lots of moisture—clouds
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Troposphere Circulation (2) 2. Subtropical high-pressure cells
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  • Spring '08
  • F
  • Ocean current, major ocean currents, Equatorial low-pressure trough, Troposphere Circulation, Subpolar low-pressure cells

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