Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay
A number of geophysical phenomenons in the open ocean are still unresolved by conventional altimetry, but could be resolved through the potential improvements offered by Synthetic Aperture Radar (SAR), also called Delay-Doppler, altimetry. The SAR altimeter offers the following benefits with respect...
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Online Access: | https://orbit.dtu.dk/en/publications/5924abbf-99b6-4bcb-a80b-6a78eea015f9 https://doi.org/10.1016/j.asr.2012.02.029 |
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ftdtupubl:oai:pure.atira.dk:publications/5924abbf-99b6-4bcb-a80b-6a78eea015f9 2024-03-31T07:51:47+00:00 Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay Stenseng, Lars Andersen, Ole Baltazar 2012 https://orbit.dtu.dk/en/publications/5924abbf-99b6-4bcb-a80b-6a78eea015f9 https://doi.org/10.1016/j.asr.2012.02.029 eng eng https://orbit.dtu.dk/en/publications/5924abbf-99b6-4bcb-a80b-6a78eea015f9 info:eu-repo/semantics/closedAccess Stenseng , L & Andersen , O B 2012 , ' Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay ' , Advances in Space Research , vol. 50 , no. 8 , pp. 1158-1163 . https://doi.org/10.1016/j.asr.2012.02.029 CryoSat-2 Retracking Gravity field Ocean Sea-ice /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2012 ftdtupubl https://doi.org/10.1016/j.asr.2012.02.029 2024-03-06T00:54:30Z A number of geophysical phenomenons in the open ocean are still unresolved by conventional altimetry, but could be resolved through the potential improvements offered by Synthetic Aperture Radar (SAR), also called Delay-Doppler, altimetry. The SAR altimeter offers the following benefits with respect to conventional satellite altimetry: factor of 20 improvements in the along-track resolution, the along-track footprint length which does not vary with wave height (sea state), and improved precision in sea surface height measurements or sea surface slope measurements. In this paper these improvements are studied with respect to retrieval of short wavelength geophysical signal related to mainly bathymetric features. In an analysis of simulated data it was found that the combination of upward continuation from the sea bottom and smoothing of the altimeter observations meant that the best recovery of geophysical signal was achieved from measurements averaged to 5 Hz, rather than the simulated 20 Hz full resolution data. A first validation of these theoretical modelling results with respect to resolution and noise is presented using various CryoSat-2 data, and evaluated against conventional radar altimeter data from the older ERS-1 Geodetic Missions. Article in Journal/Newspaper Baffin Bay Baffin Bay Baffin Sea ice Technical University of Denmark: DTU Orbit Baffin Bay Advances in Space Research 50 8 1158 1163 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
CryoSat-2 Retracking Gravity field Ocean Sea-ice /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
CryoSat-2 Retracking Gravity field Ocean Sea-ice /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Stenseng, Lars Andersen, Ole Baltazar Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay |
topic_facet |
CryoSat-2 Retracking Gravity field Ocean Sea-ice /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
A number of geophysical phenomenons in the open ocean are still unresolved by conventional altimetry, but could be resolved through the potential improvements offered by Synthetic Aperture Radar (SAR), also called Delay-Doppler, altimetry. The SAR altimeter offers the following benefits with respect to conventional satellite altimetry: factor of 20 improvements in the along-track resolution, the along-track footprint length which does not vary with wave height (sea state), and improved precision in sea surface height measurements or sea surface slope measurements. In this paper these improvements are studied with respect to retrieval of short wavelength geophysical signal related to mainly bathymetric features. In an analysis of simulated data it was found that the combination of upward continuation from the sea bottom and smoothing of the altimeter observations meant that the best recovery of geophysical signal was achieved from measurements averaged to 5 Hz, rather than the simulated 20 Hz full resolution data. A first validation of these theoretical modelling results with respect to resolution and noise is presented using various CryoSat-2 data, and evaluated against conventional radar altimeter data from the older ERS-1 Geodetic Missions. |
format |
Article in Journal/Newspaper |
author |
Stenseng, Lars Andersen, Ole Baltazar |
author_facet |
Stenseng, Lars Andersen, Ole Baltazar |
author_sort |
Stenseng, Lars |
title |
Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay |
title_short |
Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay |
title_full |
Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay |
title_fullStr |
Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay |
title_full_unstemmed |
Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay |
title_sort |
preliminary gravity recovery from cryosat-2 data in the baffin bay |
publishDate |
2012 |
url |
https://orbit.dtu.dk/en/publications/5924abbf-99b6-4bcb-a80b-6a78eea015f9 https://doi.org/10.1016/j.asr.2012.02.029 |
geographic |
Baffin Bay |
geographic_facet |
Baffin Bay |
genre |
Baffin Bay Baffin Bay Baffin Sea ice |
genre_facet |
Baffin Bay Baffin Bay Baffin Sea ice |
op_source |
Stenseng , L & Andersen , O B 2012 , ' Preliminary gravity recovery from CryoSat-2 data in the Baffin Bay ' , Advances in Space Research , vol. 50 , no. 8 , pp. 1158-1163 . https://doi.org/10.1016/j.asr.2012.02.029 |
op_relation |
https://orbit.dtu.dk/en/publications/5924abbf-99b6-4bcb-a80b-6a78eea015f9 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.asr.2012.02.029 |
container_title |
Advances in Space Research |
container_volume |
50 |
container_issue |
8 |
container_start_page |
1158 |
op_container_end_page |
1163 |
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1795030573241073664 |