Next Article in Journal
Bi-Directional Reflectance Factor Determination of the Railroad Valley Playa
Next Article in Special Issue
Editorial for the Special Issue “Combining Different Data Sources for Environmental and Operational Satellite Monitoring of Sea Ice Conditions”
Previous Article in Journal
Automatic Extraction of High-Voltage Power Transmission Objects from UAV Lidar Point Clouds
Previous Article in Special Issue
SAR Pancake Ice Thickness Retrieval in the Terra Nova Bay (Antarctica) during the PIPERS Expedition in Winter 2017
Open AccessArticle

Sensitivity of Radar Altimeter Waveform to Changes in Sea Ice Type at Resolution of Synthetic Aperture Radar

Department of Space, Earth and Environment, Chalmers University of Technology, 412 96 Göteborg, Sweden
Department of Earth Sciences, University of Gothenburg, 405 30 Göteborg, Sweden
Author to whom correspondence should be addressed.
Remote Sens. 2019, 11(22), 2602;
Received: 30 September 2019 / Revised: 31 October 2019 / Accepted: 1 November 2019 / Published: 6 November 2019
Radar altimetry in the context of sea ice has mostly been exploited to retrieve basin-scale information about sea ice thickness. In this paper, we investigate the sensitivity of altimetric waveforms to small-scale changes (a few hundred meters to about 10 km) of the sea ice surface. Near-coincidental synthetic aperture radar (SAR) imagery and CryoSat-2 altimetric data in the Beaufort Sea are used to identify and study the spatial evolution of altimeter waveforms over these features. Open water and thin ice features are easily identified because of their high peak power waveforms. Thicker ice features such as ridges and multiyear ice floes of a few hundred meters cause a response in the waveform. However, these changes are not reflected in freeboard estimates. Retrieval of robust freeboard estimates requires homogeneous floes in the order of 10 km along-track and a few kilometers to both sides across-track. We conclude that the combination of SAR imagery and altimeter data could improve the local sea ice picture by extending spatially scarce freeboard estimates to regions of similar SAR signature. View Full-Text
Keywords: sea ice; SAR; altimetry sea ice; SAR; altimetry
Show Figures

Graphical abstract

MDPI and ACS Style

Aldenhoff, W.; Heuzé, C.; Eriksson, L.E.B. Sensitivity of Radar Altimeter Waveform to Changes in Sea Ice Type at Resolution of Synthetic Aperture Radar. Remote Sens. 2019, 11, 2602.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Search more from Scilit
Back to TopTop