1. Solar Radiation and the Atmosphere

2. Basics of Solar Radiation
The sun gives of energy (aka radiation) in all wavelengths of the electromagnetic spectrum.
Some types are filtered by Earth’s atmosphere, like UV is by the ozone layer.

3. Where Does the Solar Energy Go?

4. Air Mass Movement
Air moves around within the atmosphere and gains or loses energy.
Gaining or losing energy occurs via three processes:
Conduction
Convection
Radiation

5. Process 1: Conduction
Conduction occurs when an air mass comes in contact with a heat source.
Conduction transfers energy through mediums (substances).
Cold Air
Hot Air
Hot Ground

6. Process 2: Convection
Convection occurs when air masses of two different temperatures meet and mix (requires 2 mediums).
Cold Air
Hot Air
Warm Air

7. Process 3: Radiation
Radiation transfers energy by waves moving through space but there is no movement of the any particles (needs no mediums).
This involves weak energy waves traveling in all directions from the original energy source.

8. Solar Radiation and Seasons
The angle at which solar radiation reaches the Earth determines the seasons.
Play the video and take notes.

11. Basics of Solar Radiation