%0 Journal Article
%T Brief Communication "Importance of slope-induced error correction in elevation change estimates from radar altimetry"
%A R. T. W. L. Hurkmans
%A J. L. Bamber
%A J. A. Griggs
%J The Cryosphere Discussions
%D 2012
%I Copernicus Publications
%R 10.5194/tcd-6-159-2012
%X In deriving elevation change rates (dH/dt) from radar altimetry, the slope-induced error is usually assumed to cancel out in repeat measurements. These measurements, however, represent a location that can be significantly further upslope than assumed, causing an underestimate of the basin-integrated volume change. In a case-study for the fast-flowing part of Jakobshavn Isbr , we show that a relatively straightforward correction for slope-induced error increases elevation change rates by several metres and increases the volume change by 32% for the region of interest.
%U http://www.the-cryosphere-discuss.net/6/159/2012/tcd-6-159-2012.pdf