Energy Systems in the Atmosphere

1. Thermal Energy
   
   

   - Tropical areas are hotter than higher latitudes because they receive more direct sunlight for longer periods of time.
   - Temperature is higher at lower altitudes because there is more atmosphere which contains dust and H₂O.
   - Areas that receive more direct sunlight also warm up more than those in the shade (Aspect. i.e. North vs. South Slopes.)
   

2. Kinetic Energy
   
   

   Wind: Energy moves from hot to cold (entropy.) This is what causes wind.
   
   - When air heats up, it expands so there is more space between the particles. This creates a low pressure area.
   - When the air is cool it contracts, reducing the space between the particles. This creates a high pressure area.