Giles et al. (2008)
Also: Giles et al. 2008
Antarctic sea ice elevation from satellite radar altimetry.
Giles, K. A., Laxon, S. W., & Worby, A. P. (2008). Antarctic sea ice elevation from satellite radar altimetry. Geophysical Research Letters, 35(3). Link to PDF
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.