Kaufman et al. (2009)
Also: Kaufman et al. 2009
Recent Warming Reverses Long-Term Arctic Cooling.
Kaufman, D. S., Schneider, D. P., McKay, N. P., Ammann, C. M., Bradley, R. S., Briffa, K. R.,
Vinther, B. M. (2009). Recent Warming Reverses Long-Term Arctic Cooling.Science, 325(5945), 12361239.
doi:http://doi.org/10.1126/science.1173983
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.