An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record
For ocean and climate research, it is essential to get long-term altimetric sea level data that is as accurate as possible. However, the accuracy of the altimetric data is frequently degraded in the interior of the Arctic Ocean due to the presence of seasonal or permanent sea ice. We have reprocesse...
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Online Access: | https://orbit.dtu.dk/en/publications/39d265e0-d32f-4fba-8eb5-3d40c8756014 https://doi.org/10.1080/01490419.2014.954087 |
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ftdtupubl:oai:pure.atira.dk:publications/39d265e0-d32f-4fba-8eb5-3d40c8756014 2024-03-31T07:49:43+00:00 An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record Cheng, Yongcun Andersen, Ole Baltazar Knudsen, Per 2015 https://orbit.dtu.dk/en/publications/39d265e0-d32f-4fba-8eb5-3d40c8756014 https://doi.org/10.1080/01490419.2014.954087 eng eng https://orbit.dtu.dk/en/publications/39d265e0-d32f-4fba-8eb5-3d40c8756014 info:eu-repo/semantics/closedAccess Cheng , Y , Andersen , O B & Knudsen , P 2015 , ' An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record ' , Marine Geodesy , vol. 38 , no. 2 , pp. 146-162 . https://doi.org/10.1080/01490419.2014.954087 GEOCHEMISTRY OCEANOGRAPHY REMOTE TOPEX/POSEIDON WIND Arctic Ocean sea level anomaly sea level trend /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action article 2015 ftdtupubl https://doi.org/10.1080/01490419.2014.954087 2024-03-06T00:57:37Z For ocean and climate research, it is essential to get long-term altimetric sea level data that is as accurate as possible. However, the accuracy of the altimetric data is frequently degraded in the interior of the Arctic Ocean due to the presence of seasonal or permanent sea ice. We have reprocessed ERS-1/2/Envisat satellite altimetry to develop an improved 20-year sea level dataset for the Arctic Ocean. We have developed both an along-track dataset and three-day gridded sea level anomaly (SLA) maps from September 1992 to April 2012. A major improvement in data coverage was gained by tailoring the standard altimetric editing criteria to Arctic conditions. The new reprocessed data has significant increased data coverage with between 4 and 10times the amount of data in regions such as the Beaufort Gyre region compared with AVISO and RADS datasets. This allows for a more accurate estimation of sea level changes from satellite altimetry in the Arctic Ocean. The reprocessed dataset exhibit a mean sea level trend of 2.1 +/- 1.3mm/year (without Glacial Isostatic Adjustment correction) covering the Arctic Ocean between 66 degrees N and 82 degrees N with significant higher spatial coherency in the ice-covered regions than the RADS and DUACS datasets. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Sea ice Technical University of Denmark: DTU Orbit Arctic Arctic Ocean Marine Geodesy 38 2 146 162 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
GEOCHEMISTRY OCEANOGRAPHY REMOTE TOPEX/POSEIDON WIND Arctic Ocean sea level anomaly sea level trend /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
spellingShingle |
GEOCHEMISTRY OCEANOGRAPHY REMOTE TOPEX/POSEIDON WIND Arctic Ocean sea level anomaly sea level trend /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action Cheng, Yongcun Andersen, Ole Baltazar Knudsen, Per An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record |
topic_facet |
GEOCHEMISTRY OCEANOGRAPHY REMOTE TOPEX/POSEIDON WIND Arctic Ocean sea level anomaly sea level trend /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
description |
For ocean and climate research, it is essential to get long-term altimetric sea level data that is as accurate as possible. However, the accuracy of the altimetric data is frequently degraded in the interior of the Arctic Ocean due to the presence of seasonal or permanent sea ice. We have reprocessed ERS-1/2/Envisat satellite altimetry to develop an improved 20-year sea level dataset for the Arctic Ocean. We have developed both an along-track dataset and three-day gridded sea level anomaly (SLA) maps from September 1992 to April 2012. A major improvement in data coverage was gained by tailoring the standard altimetric editing criteria to Arctic conditions. The new reprocessed data has significant increased data coverage with between 4 and 10times the amount of data in regions such as the Beaufort Gyre region compared with AVISO and RADS datasets. This allows for a more accurate estimation of sea level changes from satellite altimetry in the Arctic Ocean. The reprocessed dataset exhibit a mean sea level trend of 2.1 +/- 1.3mm/year (without Glacial Isostatic Adjustment correction) covering the Arctic Ocean between 66 degrees N and 82 degrees N with significant higher spatial coherency in the ice-covered regions than the RADS and DUACS datasets. |
format |
Article in Journal/Newspaper |
author |
Cheng, Yongcun Andersen, Ole Baltazar Knudsen, Per |
author_facet |
Cheng, Yongcun Andersen, Ole Baltazar Knudsen, Per |
author_sort |
Cheng, Yongcun |
title |
An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record |
title_short |
An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record |
title_full |
An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record |
title_fullStr |
An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record |
title_full_unstemmed |
An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record |
title_sort |
improved 20-year arctic ocean altimetric sea level data record |
publishDate |
2015 |
url |
https://orbit.dtu.dk/en/publications/39d265e0-d32f-4fba-8eb5-3d40c8756014 https://doi.org/10.1080/01490419.2014.954087 |
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 |
Cheng , Y , Andersen , O B & Knudsen , P 2015 , ' An Improved 20-Year Arctic Ocean Altimetric Sea Level Data Record ' , Marine Geodesy , vol. 38 , no. 2 , pp. 146-162 . https://doi.org/10.1080/01490419.2014.954087 |
op_relation |
https://orbit.dtu.dk/en/publications/39d265e0-d32f-4fba-8eb5-3d40c8756014 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1080/01490419.2014.954087 |
container_title |
Marine Geodesy |
container_volume |
38 |
container_issue |
2 |
container_start_page |
146 |
op_container_end_page |
162 |
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1795027825765384192 |