Coastal sea level from inland CryoSat-2 interferometric SAR altimetry
The European Space Agency's CryoSat-2 satellite can operate in a novel synthetic aperture radar interferometric (SARIn) mode where its nominal footprint (swath) is observed by two antennas and the phase difference between the signals is used to determination the exact location of the scatterer...
Published in: | Geophysical Research Letters |
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Language: | English |
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2015
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Online Access: | https://vbn.aau.dk/da/publications/5551cbd9-624b-48a4-af51-dc5af46049c0 https://doi.org/10.1002/2015GL063131 http://www.scopus.com/inward/record.url?scp=84927797961&partnerID=8YFLogxK |
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ftalborgunivpubl:oai:pure.atira.dk:publications/5551cbd9-624b-48a4-af51-dc5af46049c0 2024-09-30T14:35:56+00:00 Coastal sea level from inland CryoSat-2 interferometric SAR altimetry Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars 2015-03-28 https://vbn.aau.dk/da/publications/5551cbd9-624b-48a4-af51-dc5af46049c0 https://doi.org/10.1002/2015GL063131 http://www.scopus.com/inward/record.url?scp=84927797961&partnerID=8YFLogxK eng eng https://vbn.aau.dk/da/publications/5551cbd9-624b-48a4-af51-dc5af46049c0 info:eu-repo/semantics/openAccess Abulaitijiang , A , Andersen , O B & Stenseng , L 2015 , ' Coastal sea level from inland CryoSat-2 interferometric SAR altimetry ' , Geophysical Research Letters , vol. 42 , no. 6 , pp. 1841-1847 . https://doi.org/10.1002/2015GL063131 altimetry SAR interferometry sea level article 2015 ftalborgunivpubl https://doi.org/10.1002/2015GL063131 2024-09-19T00:52:41Z The European Space Agency's CryoSat-2 satellite can operate in a novel synthetic aperture radar interferometric (SARIn) mode where its nominal footprint (swath) is observed by two antennas and the phase difference between the signals is used to determination the exact location of the scatterer through an off-nadir correction. The potential of SARIn for sea level determination is investigated over the fjords of Eastern Greenland. In principle the satellite should only track sea level within its nominal footprint of 7km across track, but we observe that scattering targets (fjords) within twice its nominal footprint are frequently observed but mislocated in CryoSat-2 due to phase wrapping. We devised a way to relocate the observations and correct the range accordingly. When CryoSat-2 is flying inland we consequently observed that the satellite occasionally provide valid sea level in fjords up to 13km away in the across-track direction. Key Points Sea level retrieved from CryoSat-2 SARIn when satellite flies 13km inland Phase unwrapping reveals hidden data in SARIn CryoSat-2 SARIn observe sea level in regions not previously covered by altimetry Article in Journal/Newspaper Greenland Aalborg University's Research Portal Greenland Geophysical Research Letters 42 6 1841 1847 |
institution |
Open Polar |
collection |
Aalborg University's Research Portal |
op_collection_id |
ftalborgunivpubl |
language |
English |
topic |
altimetry SAR interferometry sea level |
spellingShingle |
altimetry SAR interferometry sea level Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
topic_facet |
altimetry SAR interferometry sea level |
description |
The European Space Agency's CryoSat-2 satellite can operate in a novel synthetic aperture radar interferometric (SARIn) mode where its nominal footprint (swath) is observed by two antennas and the phase difference between the signals is used to determination the exact location of the scatterer through an off-nadir correction. The potential of SARIn for sea level determination is investigated over the fjords of Eastern Greenland. In principle the satellite should only track sea level within its nominal footprint of 7km across track, but we observe that scattering targets (fjords) within twice its nominal footprint are frequently observed but mislocated in CryoSat-2 due to phase wrapping. We devised a way to relocate the observations and correct the range accordingly. When CryoSat-2 is flying inland we consequently observed that the satellite occasionally provide valid sea level in fjords up to 13km away in the across-track direction. Key Points Sea level retrieved from CryoSat-2 SARIn when satellite flies 13km inland Phase unwrapping reveals hidden data in SARIn CryoSat-2 SARIn observe sea level in regions not previously covered by altimetry |
format |
Article in Journal/Newspaper |
author |
Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars |
author_facet |
Abulaitijiang, Adili Andersen, Ole Baltazar Stenseng, Lars |
author_sort |
Abulaitijiang, Adili |
title |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_short |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_full |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_fullStr |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_full_unstemmed |
Coastal sea level from inland CryoSat-2 interferometric SAR altimetry |
title_sort |
coastal sea level from inland cryosat-2 interferometric sar altimetry |
publishDate |
2015 |
url |
https://vbn.aau.dk/da/publications/5551cbd9-624b-48a4-af51-dc5af46049c0 https://doi.org/10.1002/2015GL063131 http://www.scopus.com/inward/record.url?scp=84927797961&partnerID=8YFLogxK |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Abulaitijiang , A , Andersen , O B & Stenseng , L 2015 , ' Coastal sea level from inland CryoSat-2 interferometric SAR altimetry ' , Geophysical Research Letters , vol. 42 , no. 6 , pp. 1841-1847 . https://doi.org/10.1002/2015GL063131 |
op_relation |
https://vbn.aau.dk/da/publications/5551cbd9-624b-48a4-af51-dc5af46049c0 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2015GL063131 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
6 |
container_start_page |
1841 |
op_container_end_page |
1847 |
_version_ |
1811639139012968448 |