Short wave radiation from the sun passes through the Earth's atmosphere.
The Earth absorbs some of the radiation, warming it. However, some short wave radiation is reflected back into the atmosphere.
Some long wave radiation passes back into space. Other long wave radiation is reflected off greenhouse gases in the atmosphere back towards Earth, trapping the gas and heating the globe even more.
Humans have contributed by:
- Burning fossil fuels (Co2)
- Deforestation (Co2)
- Cattle farming (Methane)
- Gas pipeline leaks (Methane)
- Fertilisers (Nitrous oxide)
- Cars/lorries etc (Nitrous oxide)
Nitrous oxide is 250 X more powerful than Co2
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