Helm et al. (2014)
Also: Helm et al. 2014
Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2
Helm, V., Humbert, A., & Miller, H. (2014). Elevation and elevation change of Greenland and Antarctica derived from CryoSat-2. The Cryosphere, 8(4), 1539-1559. Link to PDF
doi:10.5194/tc-8-1-2014
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.