Christidis et al. (2007)
Also: Christidis et al. 2007
Human Contribution to the Lengthening of the Growing Season during 1950
Christidis, N., Stott, P.A., Brown, S., Karoly, D.J. & Caesar, J. (2007). Human Contribution to the Lengthening of the Growing Season during 1950–99. Journal of Climate. 20(21),5441-5454. Article
https://doi.org/10.1175/2007jcli1568.1
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.