Air Pressure

1
Chapter 5

• Air Pressure
• Decreases with increasing elevation
• Equatorial low and polar highs thermal driving
• Subtropical highs and subpolar lows mechanic
  driving
• Wind
• Horizontal movement in response to pressure
  difference
• Pressure gradient
• Wind direction
• Controlled by Coriolis effect and surface friction

2

• Coriolis effect
• Deflects to the right in the Northern Hemisphere
• Geostrophic wind and surface wind
• Northern Hemisphere
• Cyclone (low pressure cell) counterclockwise
• Anticyclone (high) clockwise
• Divergent and convergent wind circulation
• Windward and leeward