Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean
CryoSat-2 offers at least four important improvements compared with conventional altimetry which should benefit marine gravity in general but particularly at high latitude. Firstly the ESA CryoSat-2 signal to noise ratio should be a factor of two better than conventional altimetry. Secondly the 369...
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ftdtupubl:oai:pure.atira.dk:publications/3a3384eb-8c65-4497-82a5-934f099f7e7b 2024-03-31T07:49:45+00:00 Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean Andersen, Ole Baltazar Stenseng, Lars Knudsen, Per Jain, Maulik 2012 application/pdf https://orbit.dtu.dk/en/publications/3a3384eb-8c65-4497-82a5-934f099f7e7b https://backend.orbit.dtu.dk/ws/files/87943666/FM12-C51A-0761.pdf http://abstractsearch.agu.org/meetings/2012/FM/sections/C/sessions/C51A/abstracts/C51A-0761.html eng eng https://orbit.dtu.dk/en/publications/3a3384eb-8c65-4497-82a5-934f099f7e7b info:eu-repo/semantics/openAccess Andersen , O B , Stenseng , L , Knudsen , P & Jain , M 2012 , ' Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean ' , 2012 AGU Fall Meeting , San Francisco , United States , 03/12/2012 - 07/12/2012 . < http://abstractsearch.agu.org/meetings/2012/FM/sections/C/sessions/C51A/abstracts/C51A-0761.html > /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water conferenceObject 2012 ftdtupubl 2024-03-06T00:57:37Z CryoSat-2 offers at least four important improvements compared with conventional altimetry which should benefit marine gravity in general but particularly at high latitude. Firstly the ESA CryoSat-2 signal to noise ratio should be a factor of two better than conventional altimetry. Secondly the 369 days repeat offered by CryoSat-2 provides denser coverage than older geodetic mission data set like ERS-1. Thirdly, the 92 degree inclination of CryoSat-2 is designed to map more of the Arctic Ocean than previous altimetric satellites. Finally, CryoSat-2 is able to operate in two new modes (SAR and SAR-in) designed to improve the sea surface /ice height mapping in the Polar Regions. We have investigated the use of two years of CryoSat-2 LRM data as well as CryoSat SAR and SAR-in data for deriving a global gravity field as well as a regional marine gravity field in the Arctic. Both conventional ESA Level 2 GDR data, NOAA LRM data, but also Level1b (LRM, SAR and SAR-in waveforms) data have been analyzed. A suite of eight different empirical retrackers have been developed and investigated for their ability to predict marine gravity in the Arctic Ocean. The impact of the various improvement offered by CryoSat-2 in comparison with conventional satellite altimetry have been studied and quantified both globally but particularly for the Arctic Ocean using a large number of marine and airborne surveys providing “ground truth” marine gravity. Conference Object Arctic Arctic Arctic Ocean Technical University of Denmark: DTU Orbit Arctic Arctic Ocean |
institution |
Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Andersen, Ole Baltazar Stenseng, Lars Knudsen, Per Jain, Maulik Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
CryoSat-2 offers at least four important improvements compared with conventional altimetry which should benefit marine gravity in general but particularly at high latitude. Firstly the ESA CryoSat-2 signal to noise ratio should be a factor of two better than conventional altimetry. Secondly the 369 days repeat offered by CryoSat-2 provides denser coverage than older geodetic mission data set like ERS-1. Thirdly, the 92 degree inclination of CryoSat-2 is designed to map more of the Arctic Ocean than previous altimetric satellites. Finally, CryoSat-2 is able to operate in two new modes (SAR and SAR-in) designed to improve the sea surface /ice height mapping in the Polar Regions. We have investigated the use of two years of CryoSat-2 LRM data as well as CryoSat SAR and SAR-in data for deriving a global gravity field as well as a regional marine gravity field in the Arctic. Both conventional ESA Level 2 GDR data, NOAA LRM data, but also Level1b (LRM, SAR and SAR-in waveforms) data have been analyzed. A suite of eight different empirical retrackers have been developed and investigated for their ability to predict marine gravity in the Arctic Ocean. The impact of the various improvement offered by CryoSat-2 in comparison with conventional satellite altimetry have been studied and quantified both globally but particularly for the Arctic Ocean using a large number of marine and airborne surveys providing “ground truth” marine gravity. |
format |
Conference Object |
author |
Andersen, Ole Baltazar Stenseng, Lars Knudsen, Per Jain, Maulik |
author_facet |
Andersen, Ole Baltazar Stenseng, Lars Knudsen, Per Jain, Maulik |
author_sort |
Andersen, Ole Baltazar |
title |
Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean |
title_short |
Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean |
title_full |
Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean |
title_fullStr |
Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean |
title_full_unstemmed |
Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean |
title_sort |
impact of cryosat-2 for marine gravity field - globally and in the arctic ocean |
publishDate |
2012 |
url |
https://orbit.dtu.dk/en/publications/3a3384eb-8c65-4497-82a5-934f099f7e7b https://backend.orbit.dtu.dk/ws/files/87943666/FM12-C51A-0761.pdf http://abstractsearch.agu.org/meetings/2012/FM/sections/C/sessions/C51A/abstracts/C51A-0761.html |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_source |
Andersen , O B , Stenseng , L , Knudsen , P & Jain , M 2012 , ' Impact of CryoSat-2 for marine gravity field - globally and in the Arctic Ocean ' , 2012 AGU Fall Meeting , San Francisco , United States , 03/12/2012 - 07/12/2012 . < http://abstractsearch.agu.org/meetings/2012/FM/sections/C/sessions/C51A/abstracts/C51A-0761.html > |
op_relation |
https://orbit.dtu.dk/en/publications/3a3384eb-8c65-4497-82a5-934f099f7e7b |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1795027844437377024 |