Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades
(IF 3.11; Q2) International audience Knowledge of wave climate is essential for efficient management of the world’s coastal areas. Senegal is a relevant case, given its high coastal vulnerability to energetic wave conditions. This study investigates wave climates along the coastal zone of Senegal ba...
Published in: | Atmosphere |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2023
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Subjects: | |
Online Access: | https://hal.science/hal-04219953 https://hal.science/hal-04219953/document https://hal.science/hal-04219953/file/atmosphere-14-01142.pdf https://doi.org/10.3390/atmos14071142 |
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Archives ouvertes de Paris-Saclay |
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English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Samou, Marcellin Seujip Bertin, Xavier Sakho, Issa Lazar, Alban Sadio, Mamadou Diouf, Mouhamadou Bachir Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
(IF 3.11; Q2) International audience Knowledge of wave climate is essential for efficient management of the world’s coastal areas. Senegal is a relevant case, given its high coastal vulnerability to energetic wave conditions. This study investigates wave climates along the coastal zone of Senegal based on a new high-resolution hindcast covering the period 1980–2021. This study evaluates the average, seasonal, and extreme values for the significant wave heights (Hs), periods (Tm02/Tp), and mean directions (DIR). In boreal winter, the wave climate is dominated by swells coming from the North-Atlantic lows. In contrast, in boreal summer, the Southern Coast (from Dakar to Casamance) is exposed to swells generated in the South Atlantic Ocean. Throughout their refraction around the Dakar Peninsula, NW swells rotate by ~100° from NW to SW, while their Hs is roughly halved when reaching the Southern Coast of Senegal. Over the studied period, trends in Hs are weak (~0.6 cm.decade−1) on the Northern Coast and double on the Southern Coast (~1.2 cm.decade−1), mostly due to an increase during boreal summer (2 cm.decade−1). The wave periods show weak trends (~0.05 s.decade−1), and DIRs show weak counterclockwise rotation (−1°.decade−1). These trends are explained by the main climate modes of the Atlantic Ocean (NAO/EA during winter, SAM during summer) and are important for future research and long-term monitoring of the Senegalese Coast. |
author2 |
Université Cheikh Anta Diop de Dakar Sénégal (UCAD) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université Amadou Mahtar Mbow (UAM) 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) Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
format |
Article in Journal/Newspaper |
author |
Samou, Marcellin Seujip Bertin, Xavier Sakho, Issa Lazar, Alban Sadio, Mamadou Diouf, Mouhamadou Bachir |
author_facet |
Samou, Marcellin Seujip Bertin, Xavier Sakho, Issa Lazar, Alban Sadio, Mamadou Diouf, Mouhamadou Bachir |
author_sort |
Samou, Marcellin Seujip |
title |
Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades |
title_short |
Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades |
title_full |
Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades |
title_fullStr |
Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades |
title_full_unstemmed |
Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades |
title_sort |
wave climate variability along the coastlines of senegal over the last four decades |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-04219953 https://hal.science/hal-04219953/document https://hal.science/hal-04219953/file/atmosphere-14-01142.pdf https://doi.org/10.3390/atmos14071142 |
genre |
North Atlantic South Atlantic Ocean |
genre_facet |
North Atlantic South Atlantic Ocean |
op_source |
ISSN: 2073-4433 EISSN: 2073-4433 Atmosphere https://hal.science/hal-04219953 Atmosphere, 2023, 14 (7), pp.1142. ⟨10.3390/atmos14071142⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/atmos14071142 hal-04219953 https://hal.science/hal-04219953 https://hal.science/hal-04219953/document https://hal.science/hal-04219953/file/atmosphere-14-01142.pdf doi:10.3390/atmos14071142 WOS: 001037987500001 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/atmos14071142 |
container_title |
Atmosphere |
container_volume |
14 |
container_issue |
7 |
container_start_page |
1142 |
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1810463989549760512 |
spelling |
ftuniparissaclay:oai:HAL:hal-04219953v1 2024-09-15T18:23:44+00:00 Wave Climate Variability along the Coastlines of Senegal over the Last Four Decades Samou, Marcellin Seujip Bertin, Xavier Sakho, Issa Lazar, Alban Sadio, Mamadou Diouf, Mouhamadou Bachir Université Cheikh Anta Diop de Dakar Sénégal (UCAD) LIttoral ENvironnement et Sociétés (LIENSs) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) Université Amadou Mahtar Mbow (UAM) 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) Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-École polytechnique (X) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) 2023-07 https://hal.science/hal-04219953 https://hal.science/hal-04219953/document https://hal.science/hal-04219953/file/atmosphere-14-01142.pdf https://doi.org/10.3390/atmos14071142 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/atmos14071142 hal-04219953 https://hal.science/hal-04219953 https://hal.science/hal-04219953/document https://hal.science/hal-04219953/file/atmosphere-14-01142.pdf doi:10.3390/atmos14071142 WOS: 001037987500001 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2073-4433 EISSN: 2073-4433 Atmosphere https://hal.science/hal-04219953 Atmosphere, 2023, 14 (7), pp.1142. ⟨10.3390/atmos14071142⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2023 ftuniparissaclay https://doi.org/10.3390/atmos14071142 2024-08-30T01:48:49Z (IF 3.11; Q2) International audience Knowledge of wave climate is essential for efficient management of the world’s coastal areas. Senegal is a relevant case, given its high coastal vulnerability to energetic wave conditions. This study investigates wave climates along the coastal zone of Senegal based on a new high-resolution hindcast covering the period 1980–2021. This study evaluates the average, seasonal, and extreme values for the significant wave heights (Hs), periods (Tm02/Tp), and mean directions (DIR). In boreal winter, the wave climate is dominated by swells coming from the North-Atlantic lows. In contrast, in boreal summer, the Southern Coast (from Dakar to Casamance) is exposed to swells generated in the South Atlantic Ocean. Throughout their refraction around the Dakar Peninsula, NW swells rotate by ~100° from NW to SW, while their Hs is roughly halved when reaching the Southern Coast of Senegal. Over the studied period, trends in Hs are weak (~0.6 cm.decade−1) on the Northern Coast and double on the Southern Coast (~1.2 cm.decade−1), mostly due to an increase during boreal summer (2 cm.decade−1). The wave periods show weak trends (~0.05 s.decade−1), and DIRs show weak counterclockwise rotation (−1°.decade−1). These trends are explained by the main climate modes of the Atlantic Ocean (NAO/EA during winter, SAM during summer) and are important for future research and long-term monitoring of the Senegalese Coast. Article in Journal/Newspaper North Atlantic South Atlantic Ocean Archives ouvertes de Paris-Saclay Atmosphere 14 7 1142 |