1. NEED TO LEARN

3. Proportion of gases in todays atmosphere

5. Story of the atmosphere

8. Carbon Sinks Carbon has been locked up in the Earth:
Limestone / chalk (calcium carbonate)
Oceans
Rainforests
Fossil Fuels
Living things

13. The natural greenhouse effect and the enhanced greenhouse effect
Short wave radiation (light) from the sun.
Longwave radiation (infrared – heat) is trapped by greenhouse gases.
The more greenhouse gas there is, there more heat is trapped.

16. BURNING FOSSIL FUELS  CARBON DIOXIDE
RICE FIELDS  METHANE
BURNING FOSSIL FUELS  CARBON DIOXIDE

18. Evidence for global warming
The Earth’s temperature has always followed a natural cycle of heating and cooling
Since the industrial revolution, the overall temperature has continued to rise – why?

19. Evidence for global warming - CO2 levels and temperature
There is a direct correlation between CO2 and temperature – the more CO2 the higher the temperature.

22. Potential effects of climate change
Rising sea levels – as a results of melting ice caps and expansion of the warmer oceans. For example, the Arctic ice cap appears to be shrinking at a rate equivalent to the Netherlands melting away each year. The may cause the flooding of low lying land and increased coastal erosion. Some islands could even disappear
Increasingly common extreme weather events – such as more frequent and severe storms

23. Potential effects of climate change
Changes in temperature and the amount, timing and distribution of rainfall – this could have impacts on the food producing capacity of different regions. People have speculated that dry areas will get even drier and that monsoons in Asia will get heavier.
Changes to the distribution of wildlife species – Rapid changes in the global climate will put ecosystems around the world under great stress. Some species of wildlife may even become extinct.

26. Carbon footprint definition
The total amount of carbon dioxide and other greenhouse gases emitted over the full life cycle of a product, service or event

27. Ways to reduce carbon footprint
Carbon capture and storage – capture the carbon dioxide from power stations before it is released into the atmosphere
Less demand for beef – would reduce methane production from cows
Taxing fossil fuelled cars
Support research into alternative forms of energy

28. Problems with reducing carbon footprint
Increase in price for manufacturing and transport industries.

32. Sulfur dioxide – acid rain

33. Carbon dioxide – global warming

34. Incomplete combustion – carbon monoxide and particulates (global dimming)

35. Oxides of nitrogen – acid rain