Articles | Volume 18, issue 12
https://doi.org/10.5194/tc-18-5673-2024
https://doi.org/10.5194/tc-18-5673-2024
Research article
 | 
06 Dec 2024
Research article |  | 06 Dec 2024

Impacts of differing melt regimes on satellite radar waveforms and elevation retrievals

Alexander C. Ronan, Robert L. Hawley, and Jonathan W. Chipman

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Cited articles

Amarouche, L., Thibaut P., Zanife, O. Z., Dumont, J.-P., Vincent, P., and Steunou, N.: Improving the Jason-1 Ground Retracking to Better Account for Attitude Effects, Mar. Geod., 27, 171–197, 2004. 
Ashcraft, I. S. and Long, D. G.: Observation and Characterization of Radar Backscatter over Greenland, IEEE T. Geosci. Remote, 43, 225–237, https://doi.org/10.1109/TGRS.2004.841484, 2005. 
Benson, C. S.: Stratigraphic Studies in the Snow and Firn of the Greenland Ice Sheet, Snow Ice and Permafrost Research Establishment, Corps of Engineers, U. S. Army, Wilmette, Illinois, https://apps.dtic.mil/sti/citations/ADA337542 (last access: April 2023), 1996. 
Brown, G. S.: The Average Impulse Response of a Rough Surface and Its Applications, IEEE J. Oceanic Eng., 2, 67–74, https://doi.org/10.1109/JOE.1977.1145328, 1977. 
Cuffey, K. M. and Marshall, S. J.: Substantial contribution to sea-level rise during the last interglacial from the Greenland ice sheet, Nature, 404, 591–594, https://doi.org/10.1038/35007053, 2000. 
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Short summary
We generate a 2010–2021 time series of CryoSat-2 waveform shape metrics on the Greenland Ice Sheet, and we compare it to CryoSat-2 elevation data to investigate the reliability of two algorithms used to derive elevations from the SIRAL radar altimeter. Retracked elevations are found to depend on a waveform's leading-edge width in the dry-snow zone. The study indicates that retracking algorithms must consider significant climate events and snow conditions when assessing elevation change.
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