Climate Change - Increasing Concentrations of CO2 and other Green House Gases

  • CO2 -
    • natural and anthropogenic sources 
    • recent increase due to fossil-fuel combustion and deforestation
  • CH4 -
    • natural and anthropogenic sources
    • about 1/2 of current emissions are anthropogenic (land fills, natural gas, agriculture)
  • N2O-
    • natural and anthropogenic sources
    • nitrogen-based fertilizers
  • Other important Greenhouse Gases:
    • CFCs
    • Ozone
    • and of course, water vapor!

image from 4th IPCC Working Group I