Forster & Gregory (2006)
Also: Forster & Gregory 2006
The Climate Sensitivity and Its Components Diagnosed from Earth Radiation Budget Data
Forster, P.Mde, Gregory, J.M. (2006). The Climate Sensitivity and Its Components Diagnosed from Earth Radiation Budget Data. Journal of Climate. 19(1),39-52. PDF
https://doi.org/10.1175/jcli3611.1
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.