Weakening of the Senegalo-Mauritanian Upwelling System under climate change
Upwelling processes bring nutrient-rich waters from the deep ocean to the surface. Areas of upwelling are often associated with high productivity, offering great economic value in terms of fisheries. The sensitivity of spring/summer-time coastal upwelling systems to climate change has recently recei...
Published in: | Climate Dynamics |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2019
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Subjects: | |
Online Access: | https://hal.sorbonne-universite.fr/hal-02344499 https://hal.sorbonne-universite.fr/hal-02344499/document https://hal.sorbonne-universite.fr/hal-02344499/file/Sylla%20et%20al.%20-%202019%20-%20Weakening%20of%20the%20Senegalo%E2%80%93Mauritanian%20upwelling%20sy.pdf https://doi.org/10.1007/s00382-019-04797-y |
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ftccsdartic:oai:HAL:hal-02344499v1 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Climate models Northeastern tropical Atlantic Upwelling Climate change [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Climate models Northeastern tropical Atlantic Upwelling Climate change [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Sylla, Adama Mignot, Juliette Capet, Xavier Gaye, Amadou Thierno Weakening of the Senegalo-Mauritanian Upwelling System under climate change |
topic_facet |
Climate models Northeastern tropical Atlantic Upwelling Climate change [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
Upwelling processes bring nutrient-rich waters from the deep ocean to the surface. Areas of upwelling are often associated with high productivity, offering great economic value in terms of fisheries. The sensitivity of spring/summer-time coastal upwelling systems to climate change has recently received a lot of attention. Several studies have suggested that their intensity may increase in the future while other authors have shown decreasing intensity in their equatorward portions. Yet, recent observations do not show robust evidence of this intensification. The Senegalo-Mauritanian upwelling system (SMUS) located at the southern edge of the north Atlantic system (12°N–20°N) and most active in winter/spring has been largely excluded from these studies. Here, the seasonal cycle of the SMUS and its response to climate change is investigated in the database of the Coupled Models Inter comparison Project Phase 5 (CMIP5). Upwelling magnitude and surface signature are characterized by several sea surface temperature and wind stress indices. We highlight the ability of the climate models to reproduce the system, as well as their biases. The simulations suggest that the intensity of the SMUS winter/spring upwelling will moderately decrease in the future, primarily because of a reduction of the wind forcing linked to a northward shift of Azores anticyclone and a more regional modulation of the low pressures found over Northwest Africa. The implications of such an upwelling reduction on the ecosystems and local communities exploiting them remains very uncertain. |
author2 |
Laboratoire de Physique de l'Atmosphère et de l'Océan Siméon Fongang (LPAO-SF) École Supérieure Polytechnique de Dakar (ESP) Université Cheikh Anta Diop Dakar, Sénégal (UCAD)-Université Cheikh Anta Diop Dakar, Sénégal (UCAD) Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire Mixte International ECLAIRS2 |
format |
Article in Journal/Newspaper |
author |
Sylla, Adama Mignot, Juliette Capet, Xavier Gaye, Amadou Thierno |
author_facet |
Sylla, Adama Mignot, Juliette Capet, Xavier Gaye, Amadou Thierno |
author_sort |
Sylla, Adama |
title |
Weakening of the Senegalo-Mauritanian Upwelling System under climate change |
title_short |
Weakening of the Senegalo-Mauritanian Upwelling System under climate change |
title_full |
Weakening of the Senegalo-Mauritanian Upwelling System under climate change |
title_fullStr |
Weakening of the Senegalo-Mauritanian Upwelling System under climate change |
title_full_unstemmed |
Weakening of the Senegalo-Mauritanian Upwelling System under climate change |
title_sort |
weakening of the senegalo-mauritanian upwelling system under climate change |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.sorbonne-universite.fr/hal-02344499 https://hal.sorbonne-universite.fr/hal-02344499/document https://hal.sorbonne-universite.fr/hal-02344499/file/Sylla%20et%20al.%20-%202019%20-%20Weakening%20of%20the%20Senegalo%E2%80%93Mauritanian%20upwelling%20sy.pdf https://doi.org/10.1007/s00382-019-04797-y |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.sorbonne-universite.fr/hal-02344499 Climate Dynamics, Springer Verlag, 2019, 53 (7-8), pp.4447-4473. ⟨10.1007/s00382-019-04797-y⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-019-04797-y hal-02344499 https://hal.sorbonne-universite.fr/hal-02344499 https://hal.sorbonne-universite.fr/hal-02344499/document https://hal.sorbonne-universite.fr/hal-02344499/file/Sylla%20et%20al.%20-%202019%20-%20Weakening%20of%20the%20Senegalo%E2%80%93Mauritanian%20upwelling%20sy.pdf doi:10.1007/s00382-019-04797-y WOS: 000489753900039 IRD: fdi:010077136 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1007/s00382-019-04797-y |
container_title |
Climate Dynamics |
container_volume |
53 |
container_issue |
7-8 |
container_start_page |
4447 |
op_container_end_page |
4473 |
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1766133827566043136 |
spelling |
ftccsdartic:oai:HAL:hal-02344499v1 2023-05-15T17:34:51+02:00 Weakening of the Senegalo-Mauritanian Upwelling System under climate change Sylla, Adama Mignot, Juliette Capet, Xavier Gaye, Amadou Thierno Laboratoire de Physique de l'Atmosphère et de l'Océan Siméon Fongang (LPAO-SF) École Supérieure Polytechnique de Dakar (ESP) Université Cheikh Anta Diop Dakar, Sénégal (UCAD)-Université Cheikh Anta Diop Dakar, Sénégal (UCAD) Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire Mixte International ECLAIRS2 2019 https://hal.sorbonne-universite.fr/hal-02344499 https://hal.sorbonne-universite.fr/hal-02344499/document https://hal.sorbonne-universite.fr/hal-02344499/file/Sylla%20et%20al.%20-%202019%20-%20Weakening%20of%20the%20Senegalo%E2%80%93Mauritanian%20upwelling%20sy.pdf https://doi.org/10.1007/s00382-019-04797-y en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-019-04797-y hal-02344499 https://hal.sorbonne-universite.fr/hal-02344499 https://hal.sorbonne-universite.fr/hal-02344499/document https://hal.sorbonne-universite.fr/hal-02344499/file/Sylla%20et%20al.%20-%202019%20-%20Weakening%20of%20the%20Senegalo%E2%80%93Mauritanian%20upwelling%20sy.pdf doi:10.1007/s00382-019-04797-y WOS: 000489753900039 IRD: fdi:010077136 info:eu-repo/semantics/OpenAccess ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.sorbonne-universite.fr/hal-02344499 Climate Dynamics, Springer Verlag, 2019, 53 (7-8), pp.4447-4473. ⟨10.1007/s00382-019-04797-y⟩ Climate models Northeastern tropical Atlantic Upwelling Climate change [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 ftccsdartic https://doi.org/10.1007/s00382-019-04797-y 2021-12-19T01:43:03Z Upwelling processes bring nutrient-rich waters from the deep ocean to the surface. Areas of upwelling are often associated with high productivity, offering great economic value in terms of fisheries. The sensitivity of spring/summer-time coastal upwelling systems to climate change has recently received a lot of attention. Several studies have suggested that their intensity may increase in the future while other authors have shown decreasing intensity in their equatorward portions. Yet, recent observations do not show robust evidence of this intensification. The Senegalo-Mauritanian upwelling system (SMUS) located at the southern edge of the north Atlantic system (12°N–20°N) and most active in winter/spring has been largely excluded from these studies. Here, the seasonal cycle of the SMUS and its response to climate change is investigated in the database of the Coupled Models Inter comparison Project Phase 5 (CMIP5). Upwelling magnitude and surface signature are characterized by several sea surface temperature and wind stress indices. We highlight the ability of the climate models to reproduce the system, as well as their biases. The simulations suggest that the intensity of the SMUS winter/spring upwelling will moderately decrease in the future, primarily because of a reduction of the wind forcing linked to a northward shift of Azores anticyclone and a more regional modulation of the low pressures found over Northwest Africa. The implications of such an upwelling reduction on the ecosystems and local communities exploiting them remains very uncertain. Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Climate Dynamics 53 7-8 4447 4473 |