Enter a term in the search box to find its definition.
Settings
Use the controls in the far right panel to increase or decrease the number of terms automatically displayed (or to completely turn that feature off).
Term Lookup
Settings
All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.
"We do know that in the last century, CO2 has risen to levels well above anything experienced in the last 800,000 years and we know why CO2 causes warming. It's basic physics that's been known for more than a century. It's pretty straightforward. If you put more CO2 and other greenhouse gases into the atmosphere, it will get warmer - there is no way around that one."