Loehler & Scafetta (2011)
Also: Loehler & Scafetta 2011
Climate Change Attribution Using Empirical Decomposition of Climatic Data
Loehle, C., & Scafetta, N. (2011). Climate Change Attribution Using Empirical Decomposition of Climatic Data. Open Atmospheric Science Journal, 5, 74-86. Link to PDF - Dana wrote an article about this in 2011 Loehle and Scafetta Play Spencer's Curve Fitting Game
DOI: 10.2174/1874282301105010074
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.