Cohen et al. (2014)
Also: Cohen et al. 2014
Recent Arctic amplification and extreme mid-latitude weather
Cohen, J., Screen, J. A., Furtado, J. C., Barlow, M., Whittleston, D., Coumou, D., ... & Jones, J. (2014). Recent Arctic amplification and extreme mid-latitude weather. Nature geoscience, 7(9), 627-637. Link to PDF
doi:10.1038/ngeo2234
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.