Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France
(IF 1.99 [2018]; Q2) International audience In this study, the multi-time-scale variability of the South English Channel (case of the Seine Bay, North France) sea level and its exceptional events have been investigated in relation with the global climate patterns by the use of wavelet multi-resoluti...
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ftnormandieuniv:oai:HAL:hal-02070404v1 2024-04-14T08:16:08+00:00 Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France Turki, Imen Massei, Nicolas Laignel, Benoît, B. Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) ANR-16-CE03-0008,RICOCHET,Évaluation multirisques de territoires côtiers en contexte de changement global(2016) 2019 https://normandie-univ.hal.science/hal-02070404 https://normandie-univ.hal.science/hal-02070404/document https://normandie-univ.hal.science/hal-02070404/file/1-s2.0-S007832341930003X-main.pdf https://doi.org/10.1016/j.oceano.2019.01.003 en eng HAL CCSD Polish Academy of Sciences info:eu-repo/semantics/altIdentifier/doi/10.1016/j.oceano.2019.01.003 hal-02070404 https://normandie-univ.hal.science/hal-02070404 https://normandie-univ.hal.science/hal-02070404/document https://normandie-univ.hal.science/hal-02070404/file/1-s2.0-S007832341930003X-main.pdf doi:10.1016/j.oceano.2019.01.003 info:eu-repo/semantics/OpenAccess ISSN: 0078-3234 Oceanologia https://normandie-univ.hal.science/hal-02070404 Oceanologia, 2019, 61 (3), pp.321-333. ⟨10.1016/j.oceano.2019.01.003⟩ Sea level dynamic Climate patterns Storm events Demodulated surges Envelope approach [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2019 ftnormandieuniv https://doi.org/10.1016/j.oceano.2019.01.003 2024-03-21T16:54:33Z (IF 1.99 [2018]; Q2) International audience In this study, the multi-time-scale variability of the South English Channel (case of the Seine Bay, North France) sea level and its exceptional events have been investigated in relation with the global climate patterns by the use of wavelet multi-resolution decomposition techniques. The analysis has been focused on surges demodulating by an envelope approach. The low-frequency components of the interannual (2.1-yr, 4-yr, 7.8-yr) and the interdecadal (15.6-yr and 21.2-yr) time-scales, extracted from 46-years demodulated surges, have been correlated to 36 exceptional stormy events according to their intensity. Results have revealed five categories of storms function on their correlation with the interannual and the interdecadal demodulated surges: events with high energy are manifested at the full scales while moderate events are only observed at the interannual scales. The succession of storms is mainly carried by the last positive oscillations of the interannual and the interdecadal scales. A statistical downscaling approach integrating the discrete wavelet multi-resolution analysis for each time-scale has been used to investigate the connection between the local dynamic of surges and the global atmospheric circulation from SLP composites. This relation illustrates dipolar patterns of high-low pressures suggesting positive anomalies at the interdecadal scales of 15.6-y and 21.3-yr and the interannual scales of 4-yr while negative anomalies at 7.8-yr should be related to a series of physical mechanisms linked to the North-Atlantic and ocean/atmospheric circulation oscillating at the same time-scales. The increasing storm frequency is probably related to the Gulf Stream variation and its weakening trend in the last years. Article in Journal/Newspaper North Atlantic Normandie Université: HAL Oceanologia 61 3 321 330 |
institution |
Open Polar |
collection |
Normandie Université: HAL |
op_collection_id |
ftnormandieuniv |
language |
English |
topic |
Sea level dynamic Climate patterns Storm events Demodulated surges Envelope approach [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Sea level dynamic Climate patterns Storm events Demodulated surges Envelope approach [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Turki, Imen Massei, Nicolas Laignel, Benoît, B. Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France |
topic_facet |
Sea level dynamic Climate patterns Storm events Demodulated surges Envelope approach [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
(IF 1.99 [2018]; Q2) International audience In this study, the multi-time-scale variability of the South English Channel (case of the Seine Bay, North France) sea level and its exceptional events have been investigated in relation with the global climate patterns by the use of wavelet multi-resolution decomposition techniques. The analysis has been focused on surges demodulating by an envelope approach. The low-frequency components of the interannual (2.1-yr, 4-yr, 7.8-yr) and the interdecadal (15.6-yr and 21.2-yr) time-scales, extracted from 46-years demodulated surges, have been correlated to 36 exceptional stormy events according to their intensity. Results have revealed five categories of storms function on their correlation with the interannual and the interdecadal demodulated surges: events with high energy are manifested at the full scales while moderate events are only observed at the interannual scales. The succession of storms is mainly carried by the last positive oscillations of the interannual and the interdecadal scales. A statistical downscaling approach integrating the discrete wavelet multi-resolution analysis for each time-scale has been used to investigate the connection between the local dynamic of surges and the global atmospheric circulation from SLP composites. This relation illustrates dipolar patterns of high-low pressures suggesting positive anomalies at the interdecadal scales of 15.6-y and 21.3-yr and the interannual scales of 4-yr while negative anomalies at 7.8-yr should be related to a series of physical mechanisms linked to the North-Atlantic and ocean/atmospheric circulation oscillating at the same time-scales. The increasing storm frequency is probably related to the Gulf Stream variation and its weakening trend in the last years. |
author2 |
Morphodynamique Continentale et Côtière (M2C) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rouen Normandie (UNIROUEN) Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS) ANR-16-CE03-0008,RICOCHET,Évaluation multirisques de territoires côtiers en contexte de changement global(2016) |
format |
Article in Journal/Newspaper |
author |
Turki, Imen Massei, Nicolas Laignel, Benoît, B. |
author_facet |
Turki, Imen Massei, Nicolas Laignel, Benoît, B. |
author_sort |
Turki, Imen |
title |
Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France |
title_short |
Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France |
title_full |
Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France |
title_fullStr |
Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France |
title_full_unstemmed |
Linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: A case of the Seine Bay, France |
title_sort |
linking sea level dynamic and exceptional events to large-scale atmospheric circulation variability: a case of the seine bay, france |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://normandie-univ.hal.science/hal-02070404 https://normandie-univ.hal.science/hal-02070404/document https://normandie-univ.hal.science/hal-02070404/file/1-s2.0-S007832341930003X-main.pdf https://doi.org/10.1016/j.oceano.2019.01.003 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0078-3234 Oceanologia https://normandie-univ.hal.science/hal-02070404 Oceanologia, 2019, 61 (3), pp.321-333. ⟨10.1016/j.oceano.2019.01.003⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.oceano.2019.01.003 hal-02070404 https://normandie-univ.hal.science/hal-02070404 https://normandie-univ.hal.science/hal-02070404/document https://normandie-univ.hal.science/hal-02070404/file/1-s2.0-S007832341930003X-main.pdf doi:10.1016/j.oceano.2019.01.003 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.oceano.2019.01.003 |
container_title |
Oceanologia |
container_volume |
61 |
container_issue |
3 |
container_start_page |
321 |
op_container_end_page |
330 |
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1796314718276681728 |