2. Module 1 Power Point
Introduction, Surface Pressure, Pressure Systems

3. Weather and Climate
• Weather is the state of the atmosphere at some
place and time
– Described with quantitative variables
• Temperature, humidity, cloudiness, precipitation, wind speed,
wind direction
• Climate is weather conditions at some locality
averaged over a specified time period
– Climate is an average of the weather, figured over the
last 30-years and updated every decade
– A locale’s climate also includes weather extremes
© AMS 3

4. Why Study Weather?