Meteorology
Climate is what you expect,
weather is what you get.”
Distinguish between
Weather
Seasons
Climate
Chemical Composition of the Atmosphere
Nitrogen 78%
Oxygen 21%
Argon 0.9%
Carbon Dioxide 0.03%
Trace substances
Water Vapor
5 variables influence the atmosphere:
Temperature
Pressure
Humidity
Cloudiness
Winds
Variables influencing the atmosphere… temperature
Measure of heat
Average kinetic energy of molecules
Weather reports give air temperature at ground level
Variables influencing the atmosphere… pressure
High Pressure
Region where air has piled up
Warmer and dryer than surrounding air
Low Pressure
Region where air has stretched out
Tends to rise and cool, vapor condenses into clouds