REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry
In recent years, there has been a large focus of the Arctic due the rapid changes of the region. The sea level of the Arctic Ocean is an important climate indicator. The Arctic sea ice is decreasing and has since 1997 experienced a steepening in the decrease. The Arctic sea level determination is ch...
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ftdtupubl:oai:pure.atira.dk:publications/951a38df-15b2-4696-b1e6-ebdbd6c4a63a 2024-03-31T07:49:44+00:00 REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry Rose, S. Andersen, O. Passaro, M. Benveniste, J. 2018 application/pdf https://orbit.dtu.dk/en/publications/951a38df-15b2-4696-b1e6-ebdbd6c4a63a https://backend.orbit.dtu.dk/ws/files/163303109/25YPRA_Abstract_Book.pdf eng eng https://orbit.dtu.dk/en/publications/951a38df-15b2-4696-b1e6-ebdbd6c4a63a info:eu-repo/semantics/openAccess Rose , S , Andersen , O , Passaro , M & Benveniste , J 2018 , ' REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry ' , 25 years of progress in radar altimetry symposium , Portugal , 24/09/2018 - 29/09/2018 pp. 123 . /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action conferenceObject 2018 ftdtupubl 2024-03-06T01:07:58Z In recent years, there has been a large focus of the Arctic due the rapid changes of the region. The sea level of the Arctic Ocean is an important climate indicator. The Arctic sea ice is decreasing and has since 1997 experienced a steepening in the decrease. The Arctic sea level determination is challenging due to the seasonal to permanent sea ice cover, the lack of regional coverage of satellites, the satellite instruments ability to measure ice, insufficient geophysical models, residual orbit errors, challenging retracking of satellite altimeter data. We present the DTU/TUM 25-year sea level record based on satellite altimetry data in the Arctic Ocean from the ERS1 (1991) to CryoSat-2 (present) satellites. The sea level record is compared with several tide gauges and other available partial sea level records contributing to the ESA CCI Sea level initiative. We use updated geophysical corrections and a combination of altimeter data: REAPER (ERS1), ALES+ retracker (ERS2, Envisat), combined Rads and DTUs in-house retracker LARS (CryoSat-2). The ALES+ is an upgraded version of the Adaptive Leading Edge Subwaveform Retracker that has been developed to improve data quality and quantity in the coastal ocean, without degrading the results in the open ocean. ALES+ aims at retracking peaky waveforms typical of lead reflections without modifying the fitting model used in the open ocean. Finally, we discuss the seasonal and regional variations over the past 25 years in the Arctic sea level. Conference Object Arctic Arctic Arctic Ocean Sea ice Technical University of Denmark: DTU Orbit Arctic Arctic Ocean |
institution |
Open Polar |
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Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action Rose, S. Andersen, O. Passaro, M. Benveniste, J. REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
description |
In recent years, there has been a large focus of the Arctic due the rapid changes of the region. The sea level of the Arctic Ocean is an important climate indicator. The Arctic sea ice is decreasing and has since 1997 experienced a steepening in the decrease. The Arctic sea level determination is challenging due to the seasonal to permanent sea ice cover, the lack of regional coverage of satellites, the satellite instruments ability to measure ice, insufficient geophysical models, residual orbit errors, challenging retracking of satellite altimeter data. We present the DTU/TUM 25-year sea level record based on satellite altimetry data in the Arctic Ocean from the ERS1 (1991) to CryoSat-2 (present) satellites. The sea level record is compared with several tide gauges and other available partial sea level records contributing to the ESA CCI Sea level initiative. We use updated geophysical corrections and a combination of altimeter data: REAPER (ERS1), ALES+ retracker (ERS2, Envisat), combined Rads and DTUs in-house retracker LARS (CryoSat-2). The ALES+ is an upgraded version of the Adaptive Leading Edge Subwaveform Retracker that has been developed to improve data quality and quantity in the coastal ocean, without degrading the results in the open ocean. ALES+ aims at retracking peaky waveforms typical of lead reflections without modifying the fitting model used in the open ocean. Finally, we discuss the seasonal and regional variations over the past 25 years in the Arctic sea level. |
format |
Conference Object |
author |
Rose, S. Andersen, O. Passaro, M. Benveniste, J. |
author_facet |
Rose, S. Andersen, O. Passaro, M. Benveniste, J. |
author_sort |
Rose, S. |
title |
REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry |
title_short |
REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry |
title_full |
REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry |
title_fullStr |
REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry |
title_full_unstemmed |
REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry |
title_sort |
review: 25 years of sea level records from the arctic ocean using radar altimetry |
publishDate |
2018 |
url |
https://orbit.dtu.dk/en/publications/951a38df-15b2-4696-b1e6-ebdbd6c4a63a https://backend.orbit.dtu.dk/ws/files/163303109/25YPRA_Abstract_Book.pdf |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Sea ice |
op_source |
Rose , S , Andersen , O , Passaro , M & Benveniste , J 2018 , ' REVIEW: 25 years of Sea Level Records from the Arctic Ocean Using Radar Altimetry ' , 25 years of progress in radar altimetry symposium , Portugal , 24/09/2018 - 29/09/2018 pp. 123 . |
op_relation |
https://orbit.dtu.dk/en/publications/951a38df-15b2-4696-b1e6-ebdbd6c4a63a |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1795027833426280448 |