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