The Greenhouse effect Amelia Oatman
Storyboard Text
- Ocean ice has a high albedo on earth's surface, when solar radiation meets it, it is reflected in a random direction.
- Albedo is the measure of the amount of solar radiation reflected by a surface.
- Clouds have a high albedo in earth's atmosphere, when solar radiation meets it, it is reflected in a random direction.
- The open ocean has a low albedo on earth's surface, and when it is hit by incoming solar radiation, it absorbs it.
- The Ozone layer in the atmosphere absorbs most of the harmful UV radiation from the sun.
- The radiation emitted by earth has a much lower frequency and higher wavelength than the solar radiation that reaches earth's surface.
- Solar radiation that reaches earth's surface is made up of mostly visible light.
- Radiation emitted by earth's surface is infrared radiation.
- Some Infrared radiation emitted from earth's surface is released into space.
- Carbon dioxide and methane gas are two types of greenhouse gasses.
- when infrared radiation meets a greenhouse gas, it is absorbed and re emitted in a random direction. When the radiation is re emitted towards earth's surface, this causes a rise in earth's average temperature.
- Nitrous Oxide concentration in the atmosphere has increased due to the human activity of burning fossil fuels.
- Methane concentration in the atmosphere has increased due to the human activity of the way we let waste decompose in landfills.
- Carbon dioxide concentration in the atmosphere has increased due to the human activity deforestation.
- It takes about 100,000 years for carbon dioxide levels to peak.In the past 800,00 years, with the exception of the last 70, the carbon dioxide level has never exceeded 300 parts per million.I can conclude that the rise in carbon dioxide is due to recent human activity such as the normalization of things like air travel and car ownership.This rise in carbon dioxide levels makes it more likely that infrared radiation will be absorbed and re emitted by carbon dioxide before it leaves earth's atmosphere, this results in an increased likelihood of this radiation being trapped in earth's atmosphere and the rise in global temperatures.
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