Brief communication 'Importance of slope-induced error correction in volume change estimates from radar altimetry'

R. T. W. L. Hurkmans*, J. L. Bamber, J. A. Griggs

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

21 Citations (Scopus)

Abstract

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 up to several metres per year and significantly reduces the volume change error with respect to laser altimetry for the area of interest.

Translated title of the contributionImportance of slope-induced error correction in volume change estimates from radar altimetry
Original languageEnglish
Pages (from-to)447-451
Number of pages5
JournalCryosphere
Volume6
Issue number2
DOIs
Publication statusPublished - 2012

Keywords

  • GREENLAND ICE-SHEET
  • CONTINENTAL ICE
  • ELEVATION CHANGES
  • LASER ALTIMETRY
  • ACCURACY

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