Unit 2421: Atmospheric Dynamics

1. Introduction to Atmospheric Dynamics

• Overview of atmospheric dynamics
• Key atmospheric properties:
  • Air pressure
  • Temperature
  • Humidity
• Factors driving atmospheric circulation:
  • Solar radiation
  • Earth's rotation
  • Surface characteristics

2. Atmospheric Circulation Patterns

• Global circulation cells:
  • Hadley Cell
  • Ferrel Cell
  • Polar Cell
• Coriolis effect:
  • Definition and cause
  • Impact on wind direction
• Jet streams:
  • Location and characteristics
  • Influence on weather systems

3. Air Masses and Fronts

• Types of air masses:
  • Continental and maritime
  • Polar, tropical, arctic origins
• Characteristics of air masses:
  • Temperature
  • Humidity
• Front types and formation:
  • Cold front
  • Warm front
  • Stationary front
  • Occluded front
• Weather phenomena associated with fronts:
  • Storms
  • Precipitation patterns

4. Convection and Advection

• Convection:
  • Definition and process
  • Role in vertical heat transfer
  • Examples in weather phenomena
• Advection:
  • Definition and process
  • Horizontal heat transfer
  • Influence on local and regional weather

5. The Role of High and Low-Pressure Systems

• Formation of pressure systems:
  • Causes of high pressure
  • Causes of low pressure
• Behavior and movement of pressure systems
• Weather changes driven by pressure systems:
  • Clear skies and fair weather (high pressure)
  • Cloud formation and precipitation (low pressure)
• Impact on regional and global climate

6. Tropical Cyclones and Extratropical Cyclones

• Tropical cyclones:
  • Formation conditions
  • Structure (eye, eyewall, rainbands)
  • Terminology: hurricanes, typhoons
• Extratropical cyclones:
  • Formation mechanisms
  • Differences from tropical cyclones
• Dynamics and impacts:
  • Wind patterns
  • Precipitation
  • Damage potential

7. Monsoons and Seasonal Wind Patterns

• Causes of monsoons:
  • Differential heating between land and ocean
  • Atmospheric pressure variations
• Characteristics of major monsoons:
  • Indian Ocean monsoon
  • East Asian monsoon
• Seasonal wind patterns:
  • Shifts in prevailing winds
  • Impact on rainfall and agriculture

8. Climate Change and Atmospheric Dynamics

• Role of atmospheric dynamics in climate change
• Impact of greenhouse gas emissions on atmospheric circulation
• Changing weather patterns:
  • Altered jet streams
  • Increased frequency of extreme weather
• Feedback mechanisms:
  • Ice-albedo feedback
  • Water vapor feedback
• Implications for global and regional climates