Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry
The ocean mean dynamic topography (MDT) is the surface representation of the ocean circulation. The MDT may be determined by the ocean approach, which involves temporal averaging of numerical ocean circulation model information, or by the geodetic approach, wherein the MDT is derived using the ellip...
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2018
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Online Access: | https://hdl.handle.net/1983/957d8df8-a252-4841-8428-6941a846b912 https://research-information.bris.ac.uk/en/publications/957d8df8-a252-4841-8428-6941a846b912 https://doi.org/10.1080/01490419.2018.1530320 https://research-information.bris.ac.uk/ws/files/181743552/Andersen_et_al_2018_postprint.pdf http://www.scopus.com/inward/record.url?scp=85057315473&partnerID=8YFLogxK |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/957d8df8-a252-4841-8428-6941a846b912 2024-05-12T08:08:44+00:00 Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry Andersen, Ole Baltazar Nielsen, Karina Knudsen, Per Hughes, C. W. Bingham, Rory Fenoglio-Marc, Luciana Gravelle, Médéric Kern, Michael Polo, Sara Padilla 2018-12-01 application/pdf https://hdl.handle.net/1983/957d8df8-a252-4841-8428-6941a846b912 https://research-information.bris.ac.uk/en/publications/957d8df8-a252-4841-8428-6941a846b912 https://doi.org/10.1080/01490419.2018.1530320 https://research-information.bris.ac.uk/ws/files/181743552/Andersen_et_al_2018_postprint.pdf http://www.scopus.com/inward/record.url?scp=85057315473&partnerID=8YFLogxK eng eng https://research-information.bris.ac.uk/en/publications/957d8df8-a252-4841-8428-6941a846b912 info:eu-repo/semantics/openAccess Andersen , O B , Nielsen , K , Knudsen , P , Hughes , C W , Bingham , R , Fenoglio-Marc , L , Gravelle , M , Kern , M & Polo , S P 2018 , ' Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry ' , Marine Geodesy , vol. 41 , no. 6 , pp. 517-545 . https://doi.org/10.1080/01490419.2018.1530320 Mean dynamic topography satellite altimetry tide gauge article 2018 ftubristolcris https://doi.org/10.1080/01490419.2018.1530320 2024-04-17T14:30:56Z The ocean mean dynamic topography (MDT) is the surface representation of the ocean circulation. The MDT may be determined by the ocean approach, which involves temporal averaging of numerical ocean circulation model information, or by the geodetic approach, wherein the MDT is derived using the ellipsoidal height of the mean sea surface (MSS), or mean sea level (MSL) minus the geoid as the geoid. The ellipsoidal height of the MSS might be estimated either by satellite or coastal tide gauges by connecting the tide gauge datum to the Earth-centred reference frame. In this article we present a novel approach to improve the coastal MDT, where the solution is based on both satellite altimetry and tide gauge data using new set of 302 tide gauges with ellipsoidal heights through the SONEL network. The approach was evaluated for the Northeast Atlantic coast where a dense network of GNSS-surveyed tide gauges is available. The typical misfit between tide gauge and satellite or oceanographic MDT was found to be around 9 cm. This misfit was found to be mainly due to small scale geoid errors. Similarly, we found, that a single tide gauge places only weak constraints on the coastal dynamic topography. Article in Journal/Newspaper Northeast Atlantic University of Bristol: Bristol Research Marine Geodesy 41 6 517 545 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Mean dynamic topography satellite altimetry tide gauge |
spellingShingle |
Mean dynamic topography satellite altimetry tide gauge Andersen, Ole Baltazar Nielsen, Karina Knudsen, Per Hughes, C. W. Bingham, Rory Fenoglio-Marc, Luciana Gravelle, Médéric Kern, Michael Polo, Sara Padilla Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry |
topic_facet |
Mean dynamic topography satellite altimetry tide gauge |
description |
The ocean mean dynamic topography (MDT) is the surface representation of the ocean circulation. The MDT may be determined by the ocean approach, which involves temporal averaging of numerical ocean circulation model information, or by the geodetic approach, wherein the MDT is derived using the ellipsoidal height of the mean sea surface (MSS), or mean sea level (MSL) minus the geoid as the geoid. The ellipsoidal height of the MSS might be estimated either by satellite or coastal tide gauges by connecting the tide gauge datum to the Earth-centred reference frame. In this article we present a novel approach to improve the coastal MDT, where the solution is based on both satellite altimetry and tide gauge data using new set of 302 tide gauges with ellipsoidal heights through the SONEL network. The approach was evaluated for the Northeast Atlantic coast where a dense network of GNSS-surveyed tide gauges is available. The typical misfit between tide gauge and satellite or oceanographic MDT was found to be around 9 cm. This misfit was found to be mainly due to small scale geoid errors. Similarly, we found, that a single tide gauge places only weak constraints on the coastal dynamic topography. |
format |
Article in Journal/Newspaper |
author |
Andersen, Ole Baltazar Nielsen, Karina Knudsen, Per Hughes, C. W. Bingham, Rory Fenoglio-Marc, Luciana Gravelle, Médéric Kern, Michael Polo, Sara Padilla |
author_facet |
Andersen, Ole Baltazar Nielsen, Karina Knudsen, Per Hughes, C. W. Bingham, Rory Fenoglio-Marc, Luciana Gravelle, Médéric Kern, Michael Polo, Sara Padilla |
author_sort |
Andersen, Ole Baltazar |
title |
Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry |
title_short |
Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry |
title_full |
Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry |
title_fullStr |
Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry |
title_full_unstemmed |
Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry |
title_sort |
improving the coastal mean dynamic topography by geodetic combination of tide gauge and satellite altimetry |
publishDate |
2018 |
url |
https://hdl.handle.net/1983/957d8df8-a252-4841-8428-6941a846b912 https://research-information.bris.ac.uk/en/publications/957d8df8-a252-4841-8428-6941a846b912 https://doi.org/10.1080/01490419.2018.1530320 https://research-information.bris.ac.uk/ws/files/181743552/Andersen_et_al_2018_postprint.pdf http://www.scopus.com/inward/record.url?scp=85057315473&partnerID=8YFLogxK |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Andersen , O B , Nielsen , K , Knudsen , P , Hughes , C W , Bingham , R , Fenoglio-Marc , L , Gravelle , M , Kern , M & Polo , S P 2018 , ' Improving the Coastal Mean Dynamic Topography by Geodetic Combination of Tide Gauge and Satellite Altimetry ' , Marine Geodesy , vol. 41 , no. 6 , pp. 517-545 . https://doi.org/10.1080/01490419.2018.1530320 |
op_relation |
https://research-information.bris.ac.uk/en/publications/957d8df8-a252-4841-8428-6941a846b912 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/01490419.2018.1530320 |
container_title |
Marine Geodesy |
container_volume |
41 |
container_issue |
6 |
container_start_page |
517 |
op_container_end_page |
545 |
_version_ |
1798851840871235584 |