Climate change
- Created by: lavithedemon
- Created on: 03-04-16 12:37
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- Climate change
- carbon dioxide and water vapour are the most significant greenhouse gases
- carbon dioxide is released by cell respiration, combustion
- removed by photsynthesis and by dissolving in the oceans
- water vapour is formed by evaporation and transpiration
- removed by rainfall and snow
- carbon dioxide is released by cell respiration, combustion
- other gases including methane and nitrogen oxides have less impact
- the impact of a gas depends on its ability to absorb long - wave radiation as well as on its concentration in the atmosphere
- the concentration of a gas depends on the rate at which it is released into the atmosphere and how long on average it remains there
- the warmed Earth emits longer - wave radiation
- absorption of short - wave energy, released then as longer wavelenghts
- longer - wave radiation is reabsorbed by greenhouse gases which retains the heat in the atmosphere
- 25-30% of short waves is absorbed before reaches the Earth
- between 70 and 85% is reabsorbed, and then re-emitted
- global warming
- between 5 and 70 nm
- Correlations between global temperatures and carbon dioxide concentrations on Earth
- the change of concentration in one greenhouse gas can bring to a change in the global temperatures
- global temperatures and climate patterns are influenced by concentrations of greenhouse gases
- there is a correlation between rising atmospheric concentrations of carbon dioxide since the start of the industrial revolution 200 years ago and average global temperatures
- recent increases in atmospheric carbon dioxide are largely due to increases in the combustion of fossilised organic matter
- carbon dioxide and water vapour are the most significant greenhouse gases
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