The Cryosphere
The Cryosphere
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Articles | Volume 19, issue 5
Articles | Volume 19, issue 5
https://doi.org/10.5194/tc-19-1937-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-19-1937-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 5
Research article
 | 
19 May 2025
Research article |  | 19 May 2025

A facet-based numerical model to retrieve ice sheet topography from Sentinel-3 altimetry

Jérémie Aublanc, François Boy, Franck Borde, and Pierre Féménias

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Short summary
In this study we developed a novel processing chain to derive the ice sheet topography from Sentinel-3 altimetry measurements (named "AMPLI"). The major innovation lies in the use of numerical simulations to geolocate the radar impact point on the ground. The performance improvement is substantial compared to ground segment processing. Furthermore, with AMPLI we show that Sentinel-3 estimates the surface elevation change of the Antarctic ice sheet with a high level of agreement with ICESat-2.
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