Bray & von Storch (2007)
Also: Bray & von Storch 2007
The perspectives of climate scientists on global climate change.
Bray, D., & von Storch, H. (2007). The perspectives of climate scientists on global climate change. Link to PDF
References
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.