Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula
This paper assesses the evolution of storminess along the northern coast of the Iberian Peninsula through the calculation of extreme (1%) Total Water Levels (eTWL) on both observed (tide gauge and buoy data) and hindcasted (SIMAR-44) data. Those events were first identified and then characterized in...
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ftcopernicus:oai:publications.copernicus.org:nhess8008 2023-05-15T17:34:01+02:00 Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula Rasilla Álvarez, D. F. García Codron, J. C. 2018-09-27 application/pdf https://doi.org/10.5194/nhess-11-613-2011 https://nhess.copernicus.org/articles/11/613/2011/ eng eng doi:10.5194/nhess-11-613-2011 https://nhess.copernicus.org/articles/11/613/2011/ eISSN: 1684-9981 Text 2018 ftcopernicus https://doi.org/10.5194/nhess-11-613-2011 2020-07-20T16:26:12Z This paper assesses the evolution of storminess along the northern coast of the Iberian Peninsula through the calculation of extreme (1%) Total Water Levels (eTWL) on both observed (tide gauge and buoy data) and hindcasted (SIMAR-44) data. Those events were first identified and then characterized in terms of oceanographic parameters and atmospheric circulation features. Additionally, an analysis of the long-term trends in both types of data was performed. Most of the events correspond to a rough wave climate and moderate storm surges, linked to extratropical disturbances following a northern track. While local atmospheric conditions seem to be evolving towards lesser storminess, their impact has been balanced by the favorable exposure of the northern coast of the Iberian Peninsula to the increasing frequency and strength of distant disturbances crossing the North Atlantic. This evolution is also correctly reproduced by the simulated long-term evolution of the forcing component (meteorological sea level residuals and wave run up) of the Total Water Level values calculated from the SIMAR 44 database, since sea level residuals have been experiencing a reduction while waves are arriving with longer periods. Finally, the addition of the rate of relative sea level trend to the temporal evolution of the atmospheric forcing component of the Total Water Level values is enough to simulate more frequent and persistent eTWL. Text North Atlantic Copernicus Publications: E-Journals Natural Hazards and Earth System Sciences 11 2 613 625 |
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Open Polar |
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Copernicus Publications: E-Journals |
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English |
description |
This paper assesses the evolution of storminess along the northern coast of the Iberian Peninsula through the calculation of extreme (1%) Total Water Levels (eTWL) on both observed (tide gauge and buoy data) and hindcasted (SIMAR-44) data. Those events were first identified and then characterized in terms of oceanographic parameters and atmospheric circulation features. Additionally, an analysis of the long-term trends in both types of data was performed. Most of the events correspond to a rough wave climate and moderate storm surges, linked to extratropical disturbances following a northern track. While local atmospheric conditions seem to be evolving towards lesser storminess, their impact has been balanced by the favorable exposure of the northern coast of the Iberian Peninsula to the increasing frequency and strength of distant disturbances crossing the North Atlantic. This evolution is also correctly reproduced by the simulated long-term evolution of the forcing component (meteorological sea level residuals and wave run up) of the Total Water Level values calculated from the SIMAR 44 database, since sea level residuals have been experiencing a reduction while waves are arriving with longer periods. Finally, the addition of the rate of relative sea level trend to the temporal evolution of the atmospheric forcing component of the Total Water Level values is enough to simulate more frequent and persistent eTWL. |
format |
Text |
author |
Rasilla Álvarez, D. F. García Codron, J. C. |
spellingShingle |
Rasilla Álvarez, D. F. García Codron, J. C. Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula |
author_facet |
Rasilla Álvarez, D. F. García Codron, J. C. |
author_sort |
Rasilla Álvarez, D. F. |
title |
Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula |
title_short |
Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula |
title_full |
Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula |
title_fullStr |
Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula |
title_full_unstemmed |
Evolution of extreme Total Water Levels along the northern coast of the Iberian Peninsula |
title_sort |
evolution of extreme total water levels along the northern coast of the iberian peninsula |
publishDate |
2018 |
url |
https://doi.org/10.5194/nhess-11-613-2011 https://nhess.copernicus.org/articles/11/613/2011/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
eISSN: 1684-9981 |
op_relation |
doi:10.5194/nhess-11-613-2011 https://nhess.copernicus.org/articles/11/613/2011/ |
op_doi |
https://doi.org/10.5194/nhess-11-613-2011 |
container_title |
Natural Hazards and Earth System Sciences |
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11 |
container_issue |
2 |
container_start_page |
613 |
op_container_end_page |
625 |
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1766132703647760384 |