Kearney et al. (2010)
Also: Kearney et al. 2010
Early emergence in a butterfly causally linked to anthropogenic warming
Kearney, M.R., Briscoe, N.J., Karoly, D.J., Porter, W.P., Norgate, M. & Sunnucks, P. (2010). Early emergence in a butterfly causally linked to anthropogenic warming. Biology Letters. 6(5),674-677. PDF
https://doi.org/10.1098/rsbl.2010.0053
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.