1. Try to produce a flow chart from the text I read to you 2. Look at pages 208 to 209 of David Waugh and answer the following; a) Describe how the solar energy cascade works. b) What is insolation? How and why can it vary? c) What is albedo? How does it vary for different surfaces? What impact does this have globally? d) The heat budget – describe the heat budget then explain it.

Incoming radiation 100 units Small amount absorbed in Stratosphere (1%) Clouds absorb small amounts (3%) and reflect more (20%) Earth – 45% of incoming radiation reaches the Earth’s surface 24% absorbed by atmosphere Small amounts (4%) are reflected back to space by the Earth’s surface 24% reaches the Earth’s surface Scattering – 21% reaches the earth as diffuse radiation, the rest is scattered back to space

 Why is the Heat budget important?  Explain the flow chart below as a class;