Hansen et al. (2001)
Also: Hansen et al. 2001
A closer look at United States and global surface temperature change
Hansen, J., Ruedy, R., Sato, M., Imhoff, M., Lawrence, W., Easterling, D., ... & Karl, T. (2001). A closer look at United States and global surface temperature change. Journal of Geophysical Research: Atmospheres, 106(D20), 23947-23963. Link to PDF
DOI: 10.1029/2001JD000354
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.