Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit
The absolute sea level trend from May 1995 to May 2019 in the Baltic Sea is analyzed by means of a regional monthly gridded dataset based on a dedicated processing of satellite altimetry data. In addition, we evaluate the role of the North Atlantic Oscillation and the wind patterns in shaping differ...
Published in: | Frontiers in Marine Science |
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Main Authors: | , , , , , , , , , , , , , , , , , |
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2021
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Online Access: | https://orbit.dtu.dk/en/publications/32f56271-d388-4540-ab94-9f897e3db842 https://doi.org/10.3389/fmars.2021.647607 https://backend.orbit.dtu.dk/ws/files/247756854/fmars_08_647607.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/32f56271-d388-4540-ab94-9f897e3db842 2024-06-23T07:55:01+00:00 Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit Passaro, Marcello Müller, Felix L. Oelsmann, Julius Rautiainen, Laura Dettmering, Denise Hart-Davis, Michael G. Abulaitijiang, Adili Andersen, Ole B. Høyer, Jacob L. Madsen, Kristine S. Ringgaard, Ida Margrethe Särkkä, Jani Scarrott, Rory Schwatke, Christian Seitz, Florian Tuomi, Laura Restano, Marco Benveniste, Jérôme 2021 application/pdf https://orbit.dtu.dk/en/publications/32f56271-d388-4540-ab94-9f897e3db842 https://doi.org/10.3389/fmars.2021.647607 https://backend.orbit.dtu.dk/ws/files/247756854/fmars_08_647607.pdf eng eng https://orbit.dtu.dk/en/publications/32f56271-d388-4540-ab94-9f897e3db842 info:eu-repo/semantics/openAccess Passaro , M , Müller , F L , Oelsmann , J , Rautiainen , L , Dettmering , D , Hart-Davis , M G , Abulaitijiang , A , Andersen , O B , Høyer , J L , Madsen , K S , Ringgaard , I M , Särkkä , J , Scarrott , R , Schwatke , C , Seitz , F , Tuomi , L , Restano , M & Benveniste , J 2021 , ' Absolute Baltic Sea Level Trends in the Satellite Altimetry Era : A Revisit ' , Frontiers in Marine Science , vol. 8 , 647607 . https://doi.org/10.3389/fmars.2021.647607 Baltic Sea coastal altimetry North Atlantic Oscillation (NAO index) satellite altimetry sea level article 2021 ftdtupubl https://doi.org/10.3389/fmars.2021.647607 2024-06-11T15:02:08Z The absolute sea level trend from May 1995 to May 2019 in the Baltic Sea is analyzed by means of a regional monthly gridded dataset based on a dedicated processing of satellite altimetry data. In addition, we evaluate the role of the North Atlantic Oscillation and the wind patterns in shaping differences in sea level trend and variability at a sub-basin scale. To compile the altimetry dataset, we use information collected in coastal areas and from leads within sea-ice. The dataset is validated by comparison with tide gauges and the available global gridded altimetry products. The agreement between trends computed from satellite altimetry and tide gauges improves by 9%. The rise in sea level is statistically significant in the entire region of study and higher in winter than in summer. A gradient of over 3 mm/yr in sea level rise is observed, with the north and east of the basin rising more than the south-west. Part of this gradient (about 1 mm/yr) is directly explained by a regression analysis of the wind contribution on the sea level time series. A sub-basin analysis comparing the northernmost part (Bay of Bothnia) with the south-west reveals that the differences in winter sea level anomalies are related to different phases of the North-Atlantic Oscillation (0.71 correlation coefficient). Sea level anomalies are higher in the Bay of Bothnia when winter wind forcing pushes waters through Ekman transport from the south-west toward east and north. The study also demonstrates the maturity of enhanced satellite altimetry products to support local sea level studies in areas characterized by complex coastlines or sea-ice coverage. The processing chain used in this study can be exported to other regions, in particular to test the applicability in regions affected by larger ocean tides. The absolute sea level trend from May 1995 to May 2019 in the Baltic Sea is analyzed by means of a regional monthly gridded dataset based on a dedicated processing of satellite altimetry data. In addition, we evaluate the role of the ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Sea ice Technical University of Denmark: DTU Orbit Frontiers in Marine Science 8 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Baltic Sea coastal altimetry North Atlantic Oscillation (NAO index) satellite altimetry sea level |
spellingShingle |
Baltic Sea coastal altimetry North Atlantic Oscillation (NAO index) satellite altimetry sea level Passaro, Marcello Müller, Felix L. Oelsmann, Julius Rautiainen, Laura Dettmering, Denise Hart-Davis, Michael G. Abulaitijiang, Adili Andersen, Ole B. Høyer, Jacob L. Madsen, Kristine S. Ringgaard, Ida Margrethe Särkkä, Jani Scarrott, Rory Schwatke, Christian Seitz, Florian Tuomi, Laura Restano, Marco Benveniste, Jérôme Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit |
topic_facet |
Baltic Sea coastal altimetry North Atlantic Oscillation (NAO index) satellite altimetry sea level |
description |
The absolute sea level trend from May 1995 to May 2019 in the Baltic Sea is analyzed by means of a regional monthly gridded dataset based on a dedicated processing of satellite altimetry data. In addition, we evaluate the role of the North Atlantic Oscillation and the wind patterns in shaping differences in sea level trend and variability at a sub-basin scale. To compile the altimetry dataset, we use information collected in coastal areas and from leads within sea-ice. The dataset is validated by comparison with tide gauges and the available global gridded altimetry products. The agreement between trends computed from satellite altimetry and tide gauges improves by 9%. The rise in sea level is statistically significant in the entire region of study and higher in winter than in summer. A gradient of over 3 mm/yr in sea level rise is observed, with the north and east of the basin rising more than the south-west. Part of this gradient (about 1 mm/yr) is directly explained by a regression analysis of the wind contribution on the sea level time series. A sub-basin analysis comparing the northernmost part (Bay of Bothnia) with the south-west reveals that the differences in winter sea level anomalies are related to different phases of the North-Atlantic Oscillation (0.71 correlation coefficient). Sea level anomalies are higher in the Bay of Bothnia when winter wind forcing pushes waters through Ekman transport from the south-west toward east and north. The study also demonstrates the maturity of enhanced satellite altimetry products to support local sea level studies in areas characterized by complex coastlines or sea-ice coverage. The processing chain used in this study can be exported to other regions, in particular to test the applicability in regions affected by larger ocean tides. The absolute sea level trend from May 1995 to May 2019 in the Baltic Sea is analyzed by means of a regional monthly gridded dataset based on a dedicated processing of satellite altimetry data. In addition, we evaluate the role of the ... |
format |
Article in Journal/Newspaper |
author |
Passaro, Marcello Müller, Felix L. Oelsmann, Julius Rautiainen, Laura Dettmering, Denise Hart-Davis, Michael G. Abulaitijiang, Adili Andersen, Ole B. Høyer, Jacob L. Madsen, Kristine S. Ringgaard, Ida Margrethe Särkkä, Jani Scarrott, Rory Schwatke, Christian Seitz, Florian Tuomi, Laura Restano, Marco Benveniste, Jérôme |
author_facet |
Passaro, Marcello Müller, Felix L. Oelsmann, Julius Rautiainen, Laura Dettmering, Denise Hart-Davis, Michael G. Abulaitijiang, Adili Andersen, Ole B. Høyer, Jacob L. Madsen, Kristine S. Ringgaard, Ida Margrethe Särkkä, Jani Scarrott, Rory Schwatke, Christian Seitz, Florian Tuomi, Laura Restano, Marco Benveniste, Jérôme |
author_sort |
Passaro, Marcello |
title |
Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit |
title_short |
Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit |
title_full |
Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit |
title_fullStr |
Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit |
title_full_unstemmed |
Absolute Baltic Sea Level Trends in the Satellite Altimetry Era:A Revisit |
title_sort |
absolute baltic sea level trends in the satellite altimetry era:a revisit |
publishDate |
2021 |
url |
https://orbit.dtu.dk/en/publications/32f56271-d388-4540-ab94-9f897e3db842 https://doi.org/10.3389/fmars.2021.647607 https://backend.orbit.dtu.dk/ws/files/247756854/fmars_08_647607.pdf |
genre |
North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
North Atlantic North Atlantic oscillation Sea ice |
op_source |
Passaro , M , Müller , F L , Oelsmann , J , Rautiainen , L , Dettmering , D , Hart-Davis , M G , Abulaitijiang , A , Andersen , O B , Høyer , J L , Madsen , K S , Ringgaard , I M , Särkkä , J , Scarrott , R , Schwatke , C , Seitz , F , Tuomi , L , Restano , M & Benveniste , J 2021 , ' Absolute Baltic Sea Level Trends in the Satellite Altimetry Era : A Revisit ' , Frontiers in Marine Science , vol. 8 , 647607 . https://doi.org/10.3389/fmars.2021.647607 |
op_relation |
https://orbit.dtu.dk/en/publications/32f56271-d388-4540-ab94-9f897e3db842 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmars.2021.647607 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
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1802647401559752704 |