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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.
Observed sea level rise since 1970 from tide gauge data (red) and satellite measurements (blue) compared to model projections for 1990-2010 from the IPCC Third Assessment Report (grey band). Sea level rises mainly as a result of melting land ice and thermal expansion of ocean water as temperatures rise. Observed sea level is tracking at the upper range of the IPCC projections. (Source: The Copenhagen Diagnosis, 2009)
Note: A version of this graphic without the added text can be found here.