Layers Of Atmosphere

• contains 75% of the atmosphere mass.
• contains almost all of its water, vapor and aerosol
• this is where friction with the Earth's surface influences air flow
• Day to day weather occurs here
• air in the troposphere is heated from ground
• up to 30 miles from ground

• the stratosphere is layered in temperature because it is heated from above absorption
• It is layered by temperature with warmer layers higher up and cooler layers farther down
• 99% of air is located in the troposphere and stratosphere
• 6 mile - 30 miles from ground
  

• Greek for middle
• Millions of meteors burn up daily
• Noctilorent clouds located here
• Atmospheric tides occur in this region
• average temp -9degC, 30 mile to 54 miles

• It is the first layer exposed to sun
• Temperature can reach up to 1500degC or higher
• Scientists can't measure the temp because air is so thin up there
• Meteorites usually disintegrate in this layer.
• UV light causes ionization (electrons leave the atom causing ion to form, ions are charged atom/particles) to occur
• Auroras - ionized particles interacting with the water particles in the atmosphere.
• up to 300 miles from ground

• ionized by solar radiation
• Northern lights (Auroras - ionized particles interacting with the water particles in the atmosphere.) happen in this layer
• It bounces and transmits radio signals back to earth.
• Form the inner edge of the magnetosphere - area of space outside the earth that is influenced by the magnetic field of the earth.