The Cryosphere Discussions www.the-cryosphere-discuss.net 1994-0432 1994-0440 6 1 2012 10.5194/tcd-6-159-2012 http://www.the-cryosphere-discuss.net/6/159/2012/ http://www.the-cryosphere-discuss.net/6/159/2012/tcd-6-159-2012.html http://www.the-cryosphere-discuss.net/6/159/2012/tcd-6-159-2012.pdf 159 170 2012-01-17 Brief Communication "Importance of slope-induced error correction in elevation change estimates from radar altimetry" R. T. W. L. Hurkmans ruud.hurkmans@bristol.ac.uk J. L. Bamber J. A. Griggs Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, UK In deriving elevation change rates (<i>dH/dt</i>) 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. 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