Weber & Matthews (2008)
Also: Weber & Matthews 2008
Food-Miles and the Relative Climate Impacts of Food Choices in the United States
Weber, C.L., Matthews, H. Scott (2008). Food-Miles and the Relative Climate Impacts of Food Choices in the United States. Environmental Science & Technology. 42(10),3508-3513. PDF
https://doi.org/10.1021/es702969f
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.