Composition of the Atmosphere

The Variable Gasses

Gas Symbol % by vol Importance
Water Vapor H2O 0-4

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Carbon Dioxide - it's on the increase in atm. CO2 0.038

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Methane - it's also on the increase in atm. CH4 0.00017

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Nitrous Oxide N2O 0.00003

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Ozone O3 0.000004

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Particles (dust, soot, etc)

also called aerosols

  0.000001

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