Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar
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-coincidenta...
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Online Access: | https://doi.org/10.3390/rs11222602 https://research.chalmers.se/en/publication/514109 |
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ftchalmersuniv:oai:research.chalmers.se:514109 2023-05-15T15:40:33+02:00 Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif 2019 text https://doi.org/10.3390/rs11222602 https://research.chalmers.se/en/publication/514109 unknown http://dx.doi.org/10.3390/rs11222602 https://research.chalmers.se/en/publication/514109 Physical Geography Climate Research Geosciences Multidisciplinary Sea ice SAR Altimetry 2019 ftchalmersuniv https://doi.org/10.3390/rs11222602 2022-12-11T07:11:10Z 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. Other/Unknown Material Beaufort Sea Sea ice Chalmers University of Technology: Chalmers research Remote Sensing 11 22 2602 |
institution |
Open Polar |
collection |
Chalmers University of Technology: Chalmers research |
op_collection_id |
ftchalmersuniv |
language |
unknown |
topic |
Physical Geography Climate Research Geosciences Multidisciplinary Sea ice SAR Altimetry |
spellingShingle |
Physical Geography Climate Research Geosciences Multidisciplinary Sea ice SAR Altimetry Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar |
topic_facet |
Physical Geography Climate Research Geosciences Multidisciplinary Sea ice SAR Altimetry |
description |
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. |
author |
Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif |
author_facet |
Aldenhoff, Wiebke Heuzé, Céline Eriksson, Leif |
author_sort |
Aldenhoff, Wiebke |
title |
Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar |
title_short |
Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar |
title_full |
Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar |
title_fullStr |
Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar |
title_full_unstemmed |
Sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar |
title_sort |
sensitivity of radar altimeterwaveform to changes in sea ice type at resolution of synthetic aperture radar |
publishDate |
2019 |
url |
https://doi.org/10.3390/rs11222602 https://research.chalmers.se/en/publication/514109 |
genre |
Beaufort Sea Sea ice |
genre_facet |
Beaufort Sea Sea ice |
op_relation |
http://dx.doi.org/10.3390/rs11222602 https://research.chalmers.se/en/publication/514109 |
op_doi |
https://doi.org/10.3390/rs11222602 |
container_title |
Remote Sensing |
container_volume |
11 |
container_issue |
22 |
container_start_page |
2602 |
_version_ |
1766373001676193792 |