The Sun and Earth’s Climate
The Intergovernmental Panel on Climate Change (IPCC) claim that our planet is undergoing a change in climate. Part of their reasoning is based on the fact that the average global surface temperature has increased by approximately 0.3–0.6°C over the last century. This is the largest increase in surface temperature in the last 1,000 years and scientists are predicting an even greater increase during this century. Such increases are thought to be responsible for changes in sea levels, precipitation and weather patterns. Many scientists think that the Sun is the main cause of climate change while others think it is due to human activities. This chapter will focus on the effect the Sun and human activities have on our climate as well as other natural influences.